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DbProviderFactory — провайдер-незалежний код","/csharp/ado-net/provider-factory","01.csharp/09.ado-net/07.provider-factory",{"title":438,"path":439,"stem":440},"9.8. Асинхронний доступ до даних","/csharp/ado-net/async-data-access","01.csharp/09.ado-net/08.async-data-access",{"title":442,"path":443,"stem":444},"9.9. Від'єднаний режим: DataSet, DataTable, DataRow","/csharp/ado-net/disconnected-mode-dataset","01.csharp/09.ado-net/09.disconnected-mode-dataset",{"title":446,"path":447,"stem":448},"9.10. DataAdapter — міст між DataSet та базою даних","/csharp/ado-net/data-adapter","01.csharp/09.ado-net/10.data-adapter",{"title":450,"path":451,"stem":452},"9.11. Data Mapper та Repository: Архітектура доступу до даних","/csharp/ado-net/data-mapper-repository","01.csharp/09.ado-net/11.data-mapper-repository",{"title":454,"path":455,"stem":456},"9.12. Identity Map, Unit of Work та Specification Pattern","/csharp/ado-net/advanced-patterns","01.csharp/09.ado-net/12.advanced-patterns",{"title":458,"icon":255,"path":459,"stem":460,"children":461,"page":59},"Ef Core","/csharp/ef-core","01.csharp/10.ef-core",[462,466,470,474,478,482,486,490,494,498,502,506,510,514,518,522,526,532,538,542,546,550,554,558,562,566,570,574,578,582,586,590,594,598,602,606,610,614,618,622,626,630,634,638,642,646],{"title":463,"path":464,"stem":465},"Що таке ORM? Від SQL до об'єктів","/csharp/ef-core/what-is-orm","01.csharp/10.ef-core/01.what-is-orm",{"title":467,"path":468,"stem":469},"Перший проєкт — від нуля до CRUD","/csharp/ef-core/first-project","01.csharp/10.ef-core/02.first-project",{"title":471,"path":472,"stem":473},"DbContext — Серце EF Core","/csharp/ef-core/dbcontext-deep-dive","01.csharp/10.ef-core/03.dbcontext-deep-dive",{"title":475,"path":476,"stem":477},"Провайдери баз даних — Архітектура та Вибір СУБД","/csharp/ef-core/database-providers","01.csharp/10.ef-core/04.database-providers",{"title":479,"path":480,"stem":481},"Конвенції EF Core — Магія без конфігурації","/csharp/ef-core/conventions","01.csharp/10.ef-core/05.conventions",{"title":483,"path":484,"stem":485},"Fluent API та Data Annotations — Явна конфігурація моделі","/csharp/ef-core/fluent-api-vs-annotations","01.csharp/10.ef-core/06.fluent-api-vs-annotations",{"title":487,"path":488,"stem":489},"Зв'язки — One-to-One та One-to-Many","/csharp/ef-core/relationships-basics","01.csharp/10.ef-core/07.relationships-basics",{"title":491,"path":492,"stem":493},"Зв'язки Advanced — Many-to-Many та Складні Сценарії","/csharp/ef-core/relationships-advanced","01.csharp/10.ef-core/08.relationships-advanced",{"title":495,"path":496,"stem":497},"Властивості — Типи, Конвертери, Компаратори (Частина 1)","/csharp/ef-core/property-configuration-part1","01.csharp/10.ef-core/09.property-configuration-part1",{"title":499,"path":500,"stem":501},"Властивості — Value Comparers, Generators, Shadow Properties (Частина 2)","/csharp/ef-core/property-configuration-part2","01.csharp/10.ef-core/09.property-configuration-part2",{"title":503,"path":504,"stem":505},"Складні типи — Owned Types та Complex Types (Частина 1)","/csharp/ef-core/complex-types-owned-part1","01.csharp/10.ef-core/10.complex-types-owned-part1",{"title":507,"path":508,"stem":509},"Складні типи — Complex Types, Keyless Entities, Порівняння (Частина 2)","/csharp/ef-core/complex-types-owned-part2","01.csharp/10.ef-core/10.complex-types-owned-part2",{"title":511,"path":512,"stem":513},"JSON Columns — Складні дані у JSON (Частина 1)","/csharp/ef-core/json-columns-part1","01.csharp/10.ef-core/11.json-columns-part1",{"title":515,"path":516,"stem":517},"JSON Columns — Value Comparers, Індекси, Провайдери (Частина 2)","/csharp/ef-core/json-columns-part2","01.csharp/10.ef-core/11.json-columns-part2",{"title":519,"path":520,"stem":521},"Успадкування — Абстрактні класи та TPH (Частина 1)","/csharp/ef-core/inheritance-part1","01.csharp/10.ef-core/12.inheritance-part1",{"title":523,"path":524,"stem":525},"Успадкування — TPT, TPC та Порівняння Стратегій (Частина 2)","/csharp/ef-core/inheritance-part2","01.csharp/10.ef-core/12.inheritance-part2",{"title":527,"path":528,"stem":529,"children":530},"Індекси, Обмеження та Схема (Частина 1)","/csharp/ef-core/indexes-constraints-part1","01.csharp/10.ef-core/13.indexes-constraints-part1",[531],{"title":527,"path":528,"stem":529},{"title":533,"path":534,"stem":535,"children":536},"Індекси, Обмеження та Схема (Частина 2)","/csharp/ef-core/indexes-constraints-part2","01.csharp/10.ef-core/13.indexes-constraints-part2",[537],{"title":533,"path":534,"stem":535},{"title":539,"path":540,"stem":541},"Seed Data — Початкові Дані (Частина 1)","/csharp/ef-core/seeding-part1","01.csharp/10.ef-core/14.seeding-part1",{"title":543,"path":544,"stem":545},"Seed Data — SQL-скрипти, Bogus та Стратегії (Частина 2)","/csharp/ef-core/seeding-part2","01.csharp/10.ef-core/14.seeding-part2",{"title":547,"path":548,"stem":549},"Global Query Filters — Глобальні Фільтри (Частина 1)","/csharp/ef-core/global-query-filters-part1","01.csharp/10.ef-core/15.global-query-filters-part1",{"title":551,"path":552,"stem":553},"Global Query Filters — Підводні камені та Інтеграція (Частина 2)","/csharp/ef-core/global-query-filters-part2","01.csharp/10.ef-core/15.global-query-filters-part2",{"title":555,"path":556,"stem":557},"LINQ-запити в EF Core (Частина 1)","/csharp/ef-core/linq-queries-part1","01.csharp/10.ef-core/16.linq-queries-part1",{"title":559,"path":560,"stem":561},"LINQ-запити в EF Core (Частина 2)","/csharp/ef-core/linq-queries-part2","01.csharp/10.ef-core/16.linq-queries-part2",{"title":563,"path":564,"stem":565},"Завантаження Пов'язаних Даних (Частина 1)","/csharp/ef-core/loading-related-data-part1","01.csharp/10.ef-core/17.loading-related-data-part1",{"title":567,"path":568,"stem":569},"Завантаження Пов'язаних Даних (Частина 2)","/csharp/ef-core/loading-related-data-part2","01.csharp/10.ef-core/17.loading-related-data-part2",{"title":571,"path":572,"stem":573},"Raw SQL, Views та Stored Procedures (Частина 1)","/csharp/ef-core/raw-sql-part1","01.csharp/10.ef-core/18.raw-sql-part1",{"title":575,"path":576,"stem":577},"Raw SQL — Stored Procedures, DbFunction та Bulk Operations (Частина 2)","/csharp/ef-core/raw-sql-part2","01.csharp/10.ef-core/18.raw-sql-part2",{"title":579,"path":580,"stem":581},"Продвинуті Запити — Compiled Queries, Bulk та Оптимізація (Частина 1)","/csharp/ef-core/advanced-queries-part1","01.csharp/10.ef-core/19.advanced-queries-part1",{"title":583,"path":584,"stem":585},"Продвинуті Запити — Query Tags, Bulk та Interceptors (Частина 2)","/csharp/ef-core/advanced-queries-part2","01.csharp/10.ef-core/19.advanced-queries-part2",{"title":587,"path":588,"stem":589},"Change Tracker — Відстеження Змін (Частина 1)","/csharp/ef-core/change-tracking-part1","01.csharp/10.ef-core/20.change-tracking-part1",{"title":591,"path":592,"stem":593},"Change Tracker — Графи Об'єктів та Disconnected (Частина 2)","/csharp/ef-core/change-tracking-part2","01.csharp/10.ef-core/20.change-tracking-part2",{"title":595,"path":596,"stem":597},"Збереження Даних та Транзакції (Частина 1)","/csharp/ef-core/saving-data-part1","01.csharp/10.ef-core/21.saving-data-part1",{"title":599,"path":600,"stem":601},"Збереження Даних — Concurrency та Outbox (Частина 2)","/csharp/ef-core/saving-data-part2","01.csharp/10.ef-core/21.saving-data-part2",{"title":603,"path":604,"stem":605},"Конкурентність та Блокування (Частина 1)","/csharp/ef-core/concurrency-part1","01.csharp/10.ef-core/22.concurrency-part1",{"title":607,"path":608,"stem":609},"Конкурентність — Дедлоки та Queue Processing (Частина 2)","/csharp/ef-core/concurrency-part2","01.csharp/10.ef-core/22.concurrency-part2",{"title":611,"path":612,"stem":613},"Міграції в EF Core — Основи (Частина 1)","/csharp/ef-core/migrations-basics-part1","01.csharp/10.ef-core/23.migrations-basics-part1",{"title":615,"path":616,"stem":617},"Міграції в EF Core — Основи (Частина 2)","/csharp/ef-core/migrations-basics-part2","01.csharp/10.ef-core/23.migrations-basics-part2",{"title":619,"path":620,"stem":621},"Міграції — Просунуті Сценарії (Частина 1)","/csharp/ef-core/migrations-advanced-part1","01.csharp/10.ef-core/24.migrations-advanced-part1",{"title":623,"path":624,"stem":625},"Міграції — Просунуті Сценарії (Частина 2)","/csharp/ef-core/migrations-advanced-part2","01.csharp/10.ef-core/24.migrations-advanced-part2",{"title":627,"path":628,"stem":629},"Управління Схемою та Database-First (Частина 1)","/csharp/ef-core/schema-management-part1","01.csharp/10.ef-core/25.schema-management-part1",{"title":631,"path":632,"stem":633},"Управління Схемою та Database-First (Частина 2)","/csharp/ef-core/schema-management-part2","01.csharp/10.ef-core/25.schema-management-part2",{"title":635,"path":636,"stem":637},"Продуктивність EF Core — Основи (Частина 1)","/csharp/ef-core/performance-fundamentals-part1","01.csharp/10.ef-core/26.performance-fundamentals-part1",{"title":639,"path":640,"stem":641},"Interceptors в EF Core (Частина 1)","/csharp/ef-core/interceptors-part1","01.csharp/10.ef-core/29.interceptors-part1",{"title":643,"path":644,"stem":645},"Interceptors в EF Core — Connection, Transaction та Materialization (Частина 2)","/csharp/ef-core/interceptors-part2","01.csharp/10.ef-core/29.interceptors-part2",{"title":647,"path":648,"stem":649},"План вивчення Entity Framework Core — Повний курс","/csharp/ef-core/implementation_plan","01.csharp/10.ef-core/implementation_plan",{"title":651,"icon":652,"path":653,"stem":654,"children":655,"page":59},"ASP.NET","i-devicon-dotnetcore","/csharp/aspnet","01.csharp/11.aspnet",[656,730,791,869,927,941,967,1057,1111,1182,1212,1289],{"title":657,"icon":658,"path":659,"stem":660,"children":661,"page":59},"Minimal API","i-lucide-network","/csharp/aspnet/minimal-api","01.csharp/11.aspnet/01.minimal-api",[662,666,670,674,678,682,686,690,694,698,702,706,710,714,718,722,726],{"title":663,"path":664,"stem":665},"Вступ до ASP.NET та еволюція фреймворку","/csharp/aspnet/minimal-api/introduction","01.csharp/11.aspnet/01.minimal-api/01.introduction",{"title":667,"path":668,"stem":669},"Перший додаток на ASP.NET Core","/csharp/aspnet/minimal-api/first-application","01.csharp/11.aspnet/01.minimal-api/02.first-application",{"title":671,"path":672,"stem":673},"WebApplication, Builder та Dependency Injection","/csharp/aspnet/minimal-api/webapplication-builder","01.csharp/11.aspnet/01.minimal-api/03.webapplication-builder",{"title":675,"path":676,"stem":677},"Конвеєр запитів та Middleware","/csharp/aspnet/minimal-api/request-pipeline-middleware","01.csharp/11.aspnet/01.minimal-api/04.request-pipeline-middleware",{"title":679,"path":680,"stem":681},"Маршрутизація в ASP.NET Core: Основи","/csharp/aspnet/minimal-api/routing-basics","01.csharp/11.aspnet/01.minimal-api/05.routing-basics",{"title":683,"path":684,"stem":685},"Маршрутизація в ASP.NET Core: Розширені можливості","/csharp/aspnet/minimal-api/routing-advanced","01.csharp/11.aspnet/01.minimal-api/06.routing-advanced",{"title":687,"path":688,"stem":689},"Статичні файли в ASP.NET Core","/csharp/aspnet/minimal-api/static-files","01.csharp/11.aspnet/01.minimal-api/07.static-files",{"title":691,"path":692,"stem":693},"Статичні Активи: MapStaticAssets (ASP.NET Core 9.0)","/csharp/aspnet/minimal-api/static-assets","01.csharp/11.aspnet/01.minimal-api/08.static-assets",{"title":695,"path":696,"stem":697},"Конфігурація в ASP.NET Core: Основи","/csharp/aspnet/minimal-api/configuration-fundamentals","01.csharp/11.aspnet/01.minimal-api/09.configuration-fundamentals",{"title":699,"path":700,"stem":701},"Конфігурація: Паттерн Options","/csharp/aspnet/minimal-api/configuration-options","01.csharp/11.aspnet/01.minimal-api/10.configuration-options",{"title":703,"path":704,"stem":705},"Логування в ASP.NET Core: Основи","/csharp/aspnet/minimal-api/logging-basics","01.csharp/11.aspnet/01.minimal-api/11.logging-basics",{"title":707,"path":708,"stem":709},"Логування: Serilog та Middleware","/csharp/aspnet/minimal-api/logging-advanced","01.csharp/11.aspnet/01.minimal-api/12.logging-advanced",{"title":711,"path":712,"stem":713},"Управління станом: HttpContext.Items та Cookies","/csharp/aspnet/minimal-api/state-management","01.csharp/11.aspnet/01.minimal-api/13.state-management",{"title":715,"path":716,"stem":717},"Стан сесії: Sessions","/csharp/aspnet/minimal-api/session-state","01.csharp/11.aspnet/01.minimal-api/14.session-state",{"title":719,"path":720,"stem":721},"Структура проєкту: від хаосу до архітектури","/csharp/aspnet/minimal-api/project-structure","01.csharp/11.aspnet/01.minimal-api/15.project-structure",{"title":723,"path":724,"stem":725},"Scalar у Minimal API: повний проєкт і Fluent OpenAPI","/csharp/aspnet/minimal-api/scalar-openapi-fluent","01.csharp/11.aspnet/01.minimal-api/16.scalar-openapi-fluent",{"title":727,"path":728,"stem":729},"Swagger / Swashbuckle у Minimal API: окремий класичний шлях","/csharp/aspnet/minimal-api/swagger-swashbuckle","01.csharp/11.aspnet/01.minimal-api/17.swagger-swashbuckle",{"title":731,"icon":658,"path":732,"stem":733,"children":734,"page":59},"API","/csharp/aspnet/api","01.csharp/11.aspnet/02.api",[735,739,743,747,751,755,759,763,767,771,775,779,783,787],{"title":736,"path":737,"stem":738},"Що таке API. Клієнт-серверна архітектура","/csharp/aspnet/api/what-is-api","01.csharp/11.aspnet/02.api/01.what-is-api",{"title":740,"path":741,"stem":742},"Формати даних: JSON, XML, TOML та бінарні формати","/csharp/aspnet/api/data-formats","01.csharp/11.aspnet/02.api/02.data-formats",{"title":744,"path":745,"stem":746},"Парадигми API та концепція REST","/csharp/aspnet/api/api-paradigms-rest","01.csharp/11.aspnet/02.api/03.api-paradigms-rest",{"title":748,"path":749,"stem":750},"HTTP-методи, статус-коди та заголовки","/csharp/aspnet/api/http-methods-status-codes","01.csharp/11.aspnet/02.api/04.http-methods-status-codes",{"title":752,"path":753,"stem":754},"Організація HTTP API за принципами REST","/csharp/aspnet/api/rest-organizing","01.csharp/11.aspnet/02.api/05.rest-organizing",{"title":756,"path":757,"stem":758},"Номенклатура URL та CRUD-операції","/csharp/aspnet/api/url-nomenclature-crud","01.csharp/11.aspnet/02.api/06.url-nomenclature-crud",{"title":760,"path":761,"stem":762},"Правила дизайну: іменування та стандарти","/csharp/aspnet/api/api-design-naming","01.csharp/11.aspnet/02.api/07.api-design-naming",{"title":764,"path":765,"stem":766},"Валідація, ліміти та обробка помилок","/csharp/aspnet/api/api-design-validation","01.csharp/11.aspnet/02.api/08.api-design-validation",{"title":768,"path":769,"stem":770},"Обробка помилок у Minimal API","/csharp/aspnet/api/error-handling-http","01.csharp/11.aspnet/02.api/09.error-handling-http",{"title":772,"path":773,"stem":774},"Ідемпотентність та синхронізація стану","/csharp/aspnet/api/idempotency-sync","01.csharp/11.aspnet/02.api/10.idempotency-sync",{"title":776,"path":777,"stem":778},"Пагінація та організація списків","/csharp/aspnet/api/pagination-lists","01.csharp/11.aspnet/02.api/11.pagination-lists",{"title":780,"path":781,"stem":782},"Безпека API, кешування та інтернаціоналізація","/csharp/aspnet/api/security-auth","01.csharp/11.aspnet/02.api/12.security-auth",{"title":784,"path":785,"stem":786},"Процес проєктування API та документування","/csharp/aspnet/api/api-design-process","01.csharp/11.aspnet/02.api/13.api-design-process",{"title":788,"path":789,"stem":790},"OpenAPI: контракт, специфікація та документація API","/csharp/aspnet/api/openapi","01.csharp/11.aspnet/02.api/14.openapi",{"title":792,"icon":793,"path":794,"stem":795,"children":796,"page":59},"Auth","i-lucide-shield-check","/csharp/aspnet/auth","01.csharp/11.aspnet/03.auth",[797,801,805,809,813,817,821,825,829,833,837,841,845,849,853,857,861,865],{"title":798,"path":799,"stem":800},"Основи аутентифікації та авторизації","/csharp/aspnet/auth/auth-fundamentals","01.csharp/11.aspnet/03.auth/01.auth-fundamentals",{"title":802,"path":803,"stem":804},"JWT-аутентифікація","/csharp/aspnet/auth/jwt-authentication","01.csharp/11.aspnet/03.auth/02.jwt-authentication",{"title":806,"path":807,"stem":808},"Авторизація: ролі, політики та resource-based доступ","/csharp/aspnet/auth/authorization-policies","01.csharp/11.aspnet/03.auth/03.authorization-policies",{"title":810,"path":811,"stem":812},"Cookie-аутентифікація та ASP.NET Core Identity","/csharp/aspnet/auth/cookie-auth-identity","01.csharp/11.aspnet/03.auth/04.cookie-auth-identity",{"title":814,"path":815,"stem":816},"JWT + Refresh Tokens (HttpOnly Cookie)","/csharp/aspnet/auth/04b.identity-auth-jwt","01.csharp/11.aspnet/03.auth/04b.identity-auth-jwt",{"title":818,"path":819,"stem":820},"Identity: Підтвердження Email та Скидання Пароля","/csharp/aspnet/auth/identity-email-confirmation","01.csharp/11.aspnet/03.auth/05.identity-email-confirmation",{"title":822,"path":823,"stem":824},"Identity: Двофакторна Аутентифікація (2FA)","/csharp/aspnet/auth/identity-two-factor","01.csharp/11.aspnet/03.auth/06.identity-two-factor",{"title":826,"path":827,"stem":828},"Identity: Внутрішня Архітектура та Кастомізація","/csharp/aspnet/auth/identity-internals","01.csharp/11.aspnet/03.auth/07.identity-internals",{"title":830,"path":831,"stem":832},"OAuth 2.0 та зовнішні провайдери","/csharp/aspnet/auth/oauth-external-providers","01.csharp/11.aspnet/03.auth/08.oauth-external-providers",{"title":834,"path":835,"stem":836},"Безпека на практиці: CORS, HTTPS та захист від атак","/csharp/aspnet/auth/security-hardening","01.csharp/11.aspnet/03.auth/09.security-hardening",{"title":838,"path":839,"stem":840},"Теорія OAuth 2.0: Поняття, Аналогії та Флоу","/csharp/aspnet/auth/oauth-theory","01.csharp/11.aspnet/03.auth/10.oauth-theory",{"title":842,"path":843,"stem":844},"OIDC, OAuth 2.0 та Keycloak в ASP.NET Core","/csharp/aspnet/auth/oidc-keycloak","01.csharp/11.aspnet/03.auth/10.oidc-keycloak",{"title":846,"path":847,"stem":848},"API Keys аутентифікація в ASP.NET Core","/csharp/aspnet/auth/api-keys","01.csharp/11.aspnet/03.auth/11.api-keys",{"title":850,"path":851,"stem":852},"Rate Limiting та Throttling в ASP.NET Core","/csharp/aspnet/auth/rate-limiting","01.csharp/11.aspnet/03.auth/12.rate-limiting",{"title":854,"path":855,"stem":856},"Refresh Token Rotation в ASP.NET Core","/csharp/aspnet/auth/refresh-token-rotation","01.csharp/11.aspnet/03.auth/13.refresh-token-rotation",{"title":858,"path":859,"stem":860},"Certificate Authentication та mTLS в ASP.NET Core","/csharp/aspnet/auth/certificate-auth","01.csharp/11.aspnet/03.auth/14.certificate-auth",{"title":862,"path":863,"stem":864},"RBAC, ABAC та ReBAC в ASP.NET Core","/csharp/aspnet/auth/rbac-abac-rebac","01.csharp/11.aspnet/03.auth/15.rbac-abac-rebac",{"title":866,"path":867,"stem":868},"Multi-tenancy та ізоляція даних в ASP.NET Core","/csharp/aspnet/auth/multi-tenancy","01.csharp/11.aspnet/03.auth/16.multi-tenancy",{"title":870,"icon":871,"path":872,"stem":873,"children":874,"page":59},"Нотифікації","i-lucide-bell","/csharp/aspnet/notifications","01.csharp/11.aspnet/04.notifications",[875,879,883,887,891,895,899,903,907,911,915,919,923],{"title":876,"path":877,"stem":878},"In-App нотифікації через базу даних","/csharp/aspnet/notifications/in-app-database-notifications","01.csharp/11.aspnet/04.notifications/01.in-app-database-notifications",{"title":880,"path":881,"stem":882},"Polling: Регулярний запит оновлень","/csharp/aspnet/notifications/polling","01.csharp/11.aspnet/04.notifications/02.polling",{"title":884,"path":885,"stem":886},"Server-Sent Events: Однострімовий push від сервера","/csharp/aspnet/notifications/server-sent-events","01.csharp/11.aspnet/04.notifications/03.server-sent-events",{"title":888,"path":889,"stem":890},"WebSockets: Двостороннє з'єднання в реальному часі","/csharp/aspnet/notifications/websockets","01.csharp/11.aspnet/04.notifications/04.websockets",{"title":892,"path":893,"stem":894},"SignalR: Абстракція над транспортами реального часу","/csharp/aspnet/notifications/signalr","01.csharp/11.aspnet/04.notifications/05.signalr",{"title":896,"path":897,"stem":898},"Background Services: Фонові задачі в ASP.NET Core","/csharp/aspnet/notifications/background-services","01.csharp/11.aspnet/04.notifications/06.background-services",{"title":900,"path":901,"stem":902},"Web Push нотифікації","/csharp/aspnet/notifications/web-push","01.csharp/11.aspnet/04.notifications/07.web-push",{"title":904,"path":905,"stem":906},"Email нотифікації","/csharp/aspnet/notifications/email-notifications","01.csharp/11.aspnet/04.notifications/08.email-notifications",{"title":908,"path":909,"stem":910},"Порівняння підходів: Як вибрати правильну технологію нотифікацій","/csharp/aspnet/notifications/choosing-the-right-approach","01.csharp/11.aspnet/04.notifications/09.choosing-the-right-approach",{"title":912,"path":913,"stem":914},"Hangfire: Надійне планування фонових задач","/csharp/aspnet/notifications/hangfire","01.csharp/11.aspnet/04.notifications/10.hangfire",{"title":916,"path":917,"stem":918},"Практика: Конвертація зображень у WebP через Hangfire","/csharp/aspnet/notifications/hangfire-image-webp","01.csharp/11.aspnet/04.notifications/11.hangfire-image-webp",{"title":920,"path":921,"stem":922},"Практика: Підготовка відео до HLS-стрімінгу через Hangfire","/csharp/aspnet/notifications/hangfire-video-hls","01.csharp/11.aspnet/04.notifications/12.hangfire-video-hls",{"title":924,"path":925,"stem":926},"Telegram-нотифікації: від одного повідомлення до масових розсилок і мульти-канального підходу","/csharp/aspnet/notifications/telegram-notifications","01.csharp/11.aspnet/04.notifications/13.telegram-notifications",{"title":928,"icon":929,"path":930,"stem":931,"children":932,"page":59},"Інтернаціоналізація","i-lucide-languages","/csharp/aspnet/i18n","01.csharp/11.aspnet/05.i18n",[933,937],{"title":934,"path":935,"stem":936},"Інтернаціоналізація (i18n) у Minimal API: від A до Я","/csharp/aspnet/i18n/internationalization","01.csharp/11.aspnet/05.i18n/01.internationalization",{"title":938,"path":939,"stem":940},"Humanizer: людиномовні рядки у .NET","/csharp/aspnet/i18n/humanizer","01.csharp/11.aspnet/05.i18n/02.humanizer",{"title":942,"icon":943,"path":944,"stem":945,"children":946,"page":59},"Кешування","i-lucide-layers","/csharp/aspnet/caching","01.csharp/11.aspnet/06.caching",[947,951,955,959,963],{"title":948,"path":949,"stem":950},"Огляд кешування: чотири рівні і коли що обирати","/csharp/aspnet/caching/caching","01.csharp/11.aspnet/06.caching/01.caching",{"title":952,"path":953,"stem":954},"IMemoryCache: кеш в оперативній пам'яті","/csharp/aspnet/caching/memory-cache","01.csharp/11.aspnet/06.caching/02.memory-cache",{"title":956,"path":957,"stem":958},"IDistributedCache і Redis: розподілений кеш","/csharp/aspnet/caching/distributed-cache","01.csharp/11.aspnet/06.caching/03.distributed-cache",{"title":960,"path":961,"stem":962},"Response Cache: HTTP-кешування через Cache-Control","/csharp/aspnet/caching/response-cache","01.csharp/11.aspnet/06.caching/04.response-cache",{"title":964,"path":965,"stem":966},"Output Cache: серверний кеш HTTP-відповідей (.NET 7+)","/csharp/aspnet/caching/output-cache","01.csharp/11.aspnet/06.caching/05.output-cache",{"title":968,"icon":969,"path":970,"stem":971,"children":972,"page":59},"Тестування","i-lucide-test-tube","/csharp/aspnet/testing","01.csharp/11.aspnet/07.testing",[973,977,981,985,989,993,997,1001,1005,1009,1013,1017,1021,1025,1029,1033,1037,1041,1045,1049,1053],{"title":974,"path":975,"stem":976},"Що таке тестування? Від інтуїції до науки","/csharp/aspnet/testing/what-is-testing","01.csharp/11.aspnet/07.testing/01.what-is-testing",{"title":978,"path":979,"stem":980},"Піраміда тестування — Стратегія, а не Догма","/csharp/aspnet/testing/testing-pyramid","01.csharp/11.aspnet/07.testing/02.testing-pyramid",{"title":982,"path":983,"stem":984},"Дві Школи Тестування — Лондон проти Детройту","/csharp/aspnet/testing/testing-schools","01.csharp/11.aspnet/07.testing/03.testing-schools",{"title":986,"path":987,"stem":988},"TDD та BDD — Тести як Дизайн-інструмент","/csharp/aspnet/testing/tdd-and-bdd","01.csharp/11.aspnet/07.testing/04.tdd-and-bdd",{"title":990,"path":991,"stem":992},"Що саме тестувати — Техніки аналізу та Циклomatична складність","/csharp/aspnet/testing/what-to-test","01.csharp/11.aspnet/07.testing/05.what-to-test",{"title":994,"path":995,"stem":996},"Тестові Фреймворки — Навіщо вони і що всередині","/csharp/aspnet/testing/test-frameworks","01.csharp/11.aspnet/07.testing/06.test-frameworks",{"title":998,"path":999,"stem":1000},"xUnit — Факти, Теорії та Lifecycle тестів","/csharp/aspnet/testing/xunit-basics","01.csharp/11.aspnet/07.testing/07.xunit-basics",{"title":1002,"path":1003,"stem":1004},"xUnit Advanced — Fixtures, Кастомізація та Розширення","/csharp/aspnet/testing/xunit-advanced","01.csharp/11.aspnet/07.testing/08.xunit-advanced",{"title":1006,"path":1007,"stem":1008},"Moq — Глибоке занурення в мокування","/csharp/aspnet/testing/mocking-with-moq","01.csharp/11.aspnet/07.testing/09.mocking-with-moq",{"title":1010,"path":1011,"stem":1012},"Тестування Баз Даних — EF Core, SQLite та Testcontainers","/csharp/aspnet/testing/database-testing","01.csharp/11.aspnet/07.testing/10.database-testing",{"title":1014,"path":1015,"stem":1016},"Integration Testing — Частина 1 [Теорія та WebApplicationFactory]","/csharp/aspnet/testing/integration-testing","01.csharp/11.aspnet/07.testing/11.integration-testing",{"title":1018,"path":1019,"stem":1020},"Інтеграційне тестування — Практика","/csharp/aspnet/testing/11a.integration-testing-practice","01.csharp/11.aspnet/07.testing/11a.integration-testing-practice",{"title":1022,"path":1023,"stem":1024},"Integration Testing — Частина 2 [Просунуті Сценарії та Testcontainers]","/csharp/aspnet/testing/integration-testing-advanced","01.csharp/11.aspnet/07.testing/12.integration-testing-advanced",{"title":1026,"path":1027,"stem":1028},"Професійний Postman: Колекції, Змінні та GitHub Інтеграція","/csharp/aspnet/testing/postman-professional","01.csharp/11.aspnet/07.testing/13.postman-professional",{"title":1030,"path":1031,"stem":1032},"HttpClient у Тестах Частина 1: Архітектура та MockHttpMessageHandler","/csharp/aspnet/testing/httpclient-testing","01.csharp/11.aspnet/07.testing/14.httpclient-testing",{"title":1034,"path":1035,"stem":1036},"HttpClient у Тестах Частина 2: WireMock.Net та Resilience","/csharp/aspnet/testing/wiremock-net","01.csharp/11.aspnet/07.testing/15.wiremock-net",{"title":1038,"path":1039,"stem":1040},"Патерни та Анти-патерни Тестування: Test Smells","/csharp/aspnet/testing/testing-patterns","01.csharp/11.aspnet/07.testing/16.testing-patterns",{"title":1042,"path":1043,"stem":1044},"Просунуті інструменти: Time, Snapshots та Властивості","/csharp/aspnet/testing/advanced-testing-tools","01.csharp/11.aspnet/07.testing/17.advanced-testing-tools",{"title":1046,"path":1047,"stem":1048},"Тестування Архітектури з NetArchTest","/csharp/aspnet/testing/architecture-testing","01.csharp/11.aspnet/07.testing/18.architecture-testing",{"title":1050,"path":1051,"stem":1052},"Тестування Продуктивності: BenchmarkDotNet, NBomber та k6","/csharp/aspnet/testing/performance-testing","01.csharp/11.aspnet/07.testing/19.performance-testing",{"title":1054,"path":1055,"stem":1056},"Залишок плану для курсу \"Тестування ASP.NET Minimal API\"","/csharp/aspnet/testing/remaining_plan","01.csharp/11.aspnet/07.testing/remaining_plan",{"title":1058,"icon":1059,"path":1060,"stem":1061,"children":1062,"page":59},"Платежі","i-lucide-credit-card","/csharp/aspnet/payments","01.csharp/11.aspnet/08.payments",[1063,1067,1071,1075,1079,1083,1087,1091,1095,1099,1103,1107],{"title":1064,"path":1065,"stem":1066},"Основи платіжної інфраструктури","/csharp/aspnet/payments/payment-fundamentals","01.csharp/11.aspnet/08.payments/01.payment-fundamentals",{"title":1068,"path":1069,"stem":1070},"Методи оплати в Україні","/csharp/aspnet/payments/payment-methods-ukraine","01.csharp/11.aspnet/08.payments/02.payment-methods-ukraine",{"title":1072,"path":1073,"stem":1074},"PCI DSS та безпека платежів","/csharp/aspnet/payments/pci-dss-security","01.csharp/11.aspnet/08.payments/03.pci-dss-security",{"title":1076,"path":1077,"stem":1078},"Архітектура платіжної підсистеми","/csharp/aspnet/payments/payment-architecture","01.csharp/11.aspnet/08.payments/04.payment-architecture",{"title":1080,"path":1081,"stem":1082},"Інтеграція LiqPay (ПриватБанк)","/csharp/aspnet/payments/liqpay-integration","01.csharp/11.aspnet/08.payments/05.liqpay-integration",{"title":1084,"path":1085,"stem":1086},"Інтеграція Monobank Acquiring API","/csharp/aspnet/payments/monobank-acquiring","01.csharp/11.aspnet/08.payments/06.monobank-acquiring",{"title":1088,"path":1089,"stem":1090},"Інтеграція Stripe","/csharp/aspnet/payments/stripe-integration","01.csharp/11.aspnet/08.payments/07.stripe-integration",{"title":1092,"path":1093,"stem":1094},"Webhooks — глибоке занурення","/csharp/aspnet/payments/webhooks-deep-dive","01.csharp/11.aspnet/08.payments/08.webhooks-deep-dive",{"title":1096,"path":1097,"stem":1098},"Підписки та рекурентні платежі","/csharp/aspnet/payments/subscriptions-recurring","01.csharp/11.aspnet/08.payments/09.subscriptions-recurring",{"title":1100,"path":1101,"stem":1102},"Повернення коштів та диспути","/csharp/aspnet/payments/refunds-disputes","01.csharp/11.aspnet/08.payments/10.refunds-disputes",{"title":1104,"path":1105,"stem":1106},"Тестування платіжних інтеграцій","/csharp/aspnet/payments/testing-payments","01.csharp/11.aspnet/08.payments/11.testing-payments",{"title":1108,"path":1109,"stem":1110},"Чекліст виходу в Production","/csharp/aspnet/payments/production-checklist","01.csharp/11.aspnet/08.payments/12.production-checklist",{"title":1112,"icon":1113,"items":1114,"path":1127,"stem":1128,"children":1129,"page":59},"Популярні бібліотеки","lucide:box",[1115,1116,1117,1118,1119,1120,1121,1122,1123,1124,1125,1126],"01.fluent-validation","02.mapster","03.erroror-result-pattern","04.serilog","05.mediatr","06.polly","07.health-checks","08.feature-management","09.fluent-email","10.quest-pdf","11.bogus","12.humanizer-guard","/csharp/aspnet/libraries","01.csharp/11.aspnet/09.libraries",[1130,1134,1138,1142,1146,1150,1154,1158,1162,1166,1170,1174,1178],{"title":1131,"path":1132,"stem":1133},"Валідація з FluentValidation в ASP.NET Core","/csharp/aspnet/libraries/fluent-validation","01.csharp/11.aspnet/09.libraries/01.fluent-validation",{"title":1135,"path":1136,"stem":1137},"Маппінг об","/csharp/aspnet/libraries/mapster","01.csharp/11.aspnet/09.libraries/02.mapster",{"title":1139,"path":1140,"stem":1141},"Обробка помилок з ErrorOr та Result Pattern в ASP.NET Core","/csharp/aspnet/libraries/erroror-result-pattern","01.csharp/11.aspnet/09.libraries/03.erroror-result-pattern",{"title":1143,"path":1144,"stem":1145},"Структуроване логування з Serilog в ASP.NET Core","/csharp/aspnet/libraries/serilog","01.csharp/11.aspnet/09.libraries/04.serilog",{"title":1147,"path":1148,"stem":1149},"CQRS та Mediator з MediatR в ASP.NET Core","/csharp/aspnet/libraries/mediatr","01.csharp/11.aspnet/09.libraries/05.mediatr",{"title":1151,"path":1152,"stem":1153},"Відмовостійкість з Polly в ASP.NET Core","/csharp/aspnet/libraries/polly","01.csharp/11.aspnet/09.libraries/06.polly",{"title":1155,"path":1156,"stem":1157},"Health Checks в ASP.NET Core","/csharp/aspnet/libraries/health-checks","01.csharp/11.aspnet/09.libraries/07.health-checks",{"title":1159,"path":1160,"stem":1161},"Feature Management та Feature Flags в ASP.NET Core","/csharp/aspnet/libraries/feature-management","01.csharp/11.aspnet/09.libraries/08.feature-management",{"title":1163,"path":1164,"stem":1165},"Відправка Email з FluentEmail в ASP.NET Core","/csharp/aspnet/libraries/fluent-email","01.csharp/11.aspnet/09.libraries/09.fluent-email",{"title":1167,"path":1168,"stem":1169},"Генерація PDF з QuestPDF в ASP.NET Core","/csharp/aspnet/libraries/quest-pdf","01.csharp/11.aspnet/09.libraries/10.quest-pdf",{"title":1171,"path":1172,"stem":1173},"Генерація тестових даних з Bogus в ASP.NET Core","/csharp/aspnet/libraries/bogus","01.csharp/11.aspnet/09.libraries/11.bogus",{"title":1175,"path":1176,"stem":1177},"Humanizer та Guard Clauses в ASP.NET Core","/csharp/aspnet/libraries/humanizer-guard","01.csharp/11.aspnet/09.libraries/12.humanizer-guard",{"title":1179,"path":1180,"stem":1181},"План модуля 10.libraries — Популярні бібліотеки ASP.NET","/csharp/aspnet/libraries/plan","01.csharp/11.aspnet/09.libraries/plan",{"title":1183,"icon":1184,"path":1185,"stem":1186,"children":1187,"page":59},"Razor Pages","i-lucide-layout-template","/csharp/aspnet/razor-pages","01.csharp/11.aspnet/10.razor-pages",[1188,1192,1196,1200,1204,1208],{"title":1189,"path":1190,"stem":1191},"Від Minimal API до Razor Pages: концептуальний перехід","/csharp/aspnet/razor-pages/from-minimal-api","01.csharp/11.aspnet/10.razor-pages/01.from-minimal-api",{"title":1193,"path":1194,"stem":1195},"PageModel: логіка сторінки Razor Pages","/csharp/aspnet/razor-pages/page-model","01.csharp/11.aspnet/10.razor-pages/02.page-model",{"title":1197,"path":1198,"stem":1199},"Razor синтаксис: шаблонізатор у .cshtml","/csharp/aspnet/razor-pages/razor-syntax","01.csharp/11.aspnet/10.razor-pages/03.razor-syntax",{"title":1201,"path":1202,"stem":1203},"Tag Helpers: типізований HTML","/csharp/aspnet/razor-pages/tag-helpers","01.csharp/11.aspnet/10.razor-pages/04.tag-helpers",{"title":1205,"path":1206,"stem":1207},"Форми і валідація: повний цикл обробки даних","/csharp/aspnet/razor-pages/forms-validation","01.csharp/11.aspnet/10.razor-pages/05.forms-validation",{"title":1209,"path":1210,"stem":1211},"Практичний проєкт: TaskManager на Razor Pages","/csharp/aspnet/razor-pages/project-task-manager","01.csharp/11.aspnet/10.razor-pages/06.project-task-manager",{"title":1213,"path":1214,"stem":1215,"children":1216,"page":59},"ASP.NET Core MVC","/csharp/aspnet/mvc","01.csharp/11.aspnet/11.mvc",[1217,1221,1225,1229,1233,1237,1241,1245,1249,1253,1257,1261,1265,1269,1273,1277,1281,1285],{"title":1218,"path":1219,"stem":1220},"Патерн MVC: архітектура, що змінила веб","/csharp/aspnet/mvc/mvc-pattern","01.csharp/11.aspnet/11.mvc/01.mvc-pattern",{"title":1222,"path":1223,"stem":1224},"Від Razor Pages до MVC: концептуальний перехід","/csharp/aspnet/mvc/from-razor-pages","01.csharp/11.aspnet/11.mvc/02.from-razor-pages",{"title":1226,"path":1227,"stem":1228},"Controllers та Actions: серце MVC","/csharp/aspnet/mvc/controllers-actions","01.csharp/11.aspnet/11.mvc/03.controllers-actions",{"title":1230,"path":1231,"stem":1232},"Маршрутизація в MVC: Convention vs Attribute Routing","/csharp/aspnet/mvc/routing-mvc","01.csharp/11.aspnet/11.mvc/04.routing-mvc",{"title":1234,"path":1235,"stem":1236},"Model Binding: від HTTP до C#","/csharp/aspnet/mvc/model-binding","01.csharp/11.aspnet/11.mvc/05.model-binding",{"title":1238,"path":1239,"stem":1240},"Views, ViewData, ViewBag, TempData і ViewModel","/csharp/aspnet/mvc/views-viewdata-tempdata","01.csharp/11.aspnet/11.mvc/06.views-viewdata-tempdata",{"title":1242,"path":1243,"stem":1244},"Filters: аспектно-орієнтоване програмування в MVC","/csharp/aspnet/mvc/filters","01.csharp/11.aspnet/11.mvc/07.filters",{"title":1246,"path":1247,"stem":1248},"Areas: структурування великих застосунків","/csharp/aspnet/mvc/areas","01.csharp/11.aspnet/11.mvc/08.areas",{"title":1250,"path":1251,"stem":1252},"View Components: повторювані незалежні блоки UI","/csharp/aspnet/mvc/view-components","01.csharp/11.aspnet/11.mvc/09.view-components",{"title":1254,"path":1255,"stem":1256},"Display та Editor Templates","/csharp/aspnet/mvc/display-editor-templates","01.csharp/11.aspnet/11.mvc/10.display-editor-templates",{"title":1258,"path":1259,"stem":1260},"Валідація: IValidatableObject та FluentValidation","/csharp/aspnet/mvc/validation-advanced","01.csharp/11.aspnet/11.mvc/11.validation-advanced",{"title":1262,"path":1263,"stem":1264},"HTMX: інтерактивність через HTML-атрибути","/csharp/aspnet/mvc/htmx","01.csharp/11.aspnet/11.mvc/12.htmx",{"title":1266,"path":1267,"stem":1268},"HTMX у ASP.NET Core MVC: серверна інтеграція","/csharp/aspnet/mvc/ajax-htmx-mvc","01.csharp/11.aspnet/11.mvc/13.ajax-htmx-mvc",{"title":1270,"path":1271,"stem":1272},"Практичний проєкт: Каталог товарів з HTMX","/csharp/aspnet/mvc/htmx-project","01.csharp/11.aspnet/11.mvc/14.htmx-project",{"title":1274,"path":1275,"stem":1276},"Завантаження та обробка файлів","/csharp/aspnet/mvc/file-upload","01.csharp/11.aspnet/11.mvc/15.file-upload",{"title":1278,"path":1279,"stem":1280},"Глобалізація та Локалізація MVC","/csharp/aspnet/mvc/globalization-localization","01.csharp/11.aspnet/11.mvc/16.globalization-localization",{"title":1282,"path":1283,"stem":1284},"Підсумковий проєкт: Блог-платформа","/csharp/aspnet/mvc/mvc-project","01.csharp/11.aspnet/11.mvc/17.mvc-project",{"title":1286,"path":1287,"stem":1288},"План курсу: ASP.NET Core MVC","/csharp/aspnet/mvc/plan","01.csharp/11.aspnet/11.mvc/plan",{"title":1290,"path":1291,"stem":1292,"children":1293,"page":59},"Web Api","/csharp/aspnet/web-api","01.csharp/11.aspnet/12.web-api",[1294,1298,1302,1306,1310,1314,1318,1322,1326,1330,1334,1338,1342],{"title":1295,"path":1296,"stem":1297},"Від Minimal API до Controller-based API","/csharp/aspnet/web-api/from-minimal-api-to-controllers","01.csharp/11.aspnet/12.web-api/01.from-minimal-api-to-controllers",{"title":1299,"path":1300,"stem":1301},"ControllerBase, ActionResult\u003CT> та Response Types","/csharp/aspnet/web-api/controller-base-actionresult","01.csharp/11.aspnet/12.web-api/02.controller-base-actionresult",{"title":1303,"path":1304,"stem":1305},"Content Negotiation - JSON, XML та власні форматери","/csharp/aspnet/web-api/content-negotiation","01.csharp/11.aspnet/12.web-api/03.content-negotiation",{"title":1307,"path":1308,"stem":1309},"Версіонування API","/csharp/aspnet/web-api/api-versioning","01.csharp/11.aspnet/12.web-api/04.api-versioning",{"title":1311,"path":1312,"stem":1313},"ProblemDetails та структурована обробка помилок","/csharp/aspnet/web-api/problemdetails-error-handling","01.csharp/11.aspnet/12.web-api/05.problemdetails-error-handling",{"title":1315,"path":1316,"stem":1317},"Фільтри у Web API контексті","/csharp/aspnet/web-api/filters-for-api","01.csharp/11.aspnet/12.web-api/06.filters-for-api",{"title":1319,"path":1320,"stem":1321},"Пагінація, фільтрація та сортування","/csharp/aspnet/web-api/pagination-filtering-sorting","01.csharp/11.aspnet/12.web-api/07.pagination-filtering-sorting",{"title":1323,"path":1324,"stem":1325},"HATEOAS та Resource Expansion","/csharp/aspnet/web-api/hateoas-resource-expansion","01.csharp/11.aspnet/12.web-api/08.hateoas-resource-expansion",{"title":1327,"path":1328,"stem":1329},"Гібридна архітектура - Minimal API + Controllers","/csharp/aspnet/web-api/minimal-api-vs-controllers-hybrid","01.csharp/11.aspnet/12.web-api/09.minimal-api-vs-controllers-hybrid",{"title":1331,"path":1332,"stem":1333},"Документація API - Swashbuckle, NSwag та генерація клієнтів","/csharp/aspnet/web-api/api-documentation-generation","01.csharp/11.aspnet/12.web-api/10.api-documentation-generation",{"title":1335,"path":1336,"stem":1337},"Health Checks та моніторинг API","/csharp/aspnet/web-api/health-checks-monitoring","01.csharp/11.aspnet/12.web-api/11.health-checks-monitoring",{"title":1339,"path":1340,"stem":1341},"Підсумковий проєкт - Production-Ready REST API","/csharp/aspnet/web-api/web-api-project","01.csharp/11.aspnet/12.web-api/12.web-api-project",{"title":1343,"path":1344,"stem":1345},"План курсу: ASP.NET Core Web API (Controllers)","/csharp/aspnet/web-api/plan","01.csharp/11.aspnet/12.web-api/plan",{"title":1347,"icon":1348,"path":1349,"stem":1350,"children":1351,"page":59},"Desktop UI","i-lucide-app-window","/csharp/desktop-ui","01.csharp/12.desktop-ui",[1352,1356,1360,1364,1368,1372,1376,1380,1384,1388,1392,1396,1400,1404,1408,1412,1416,1420,1424,1428,1432,1436,1440,1444,1448,1452,1456,1460,1464,1468,1472,1476,1480,1484,1488,1492,1496,1500,1504,1508,1512,1516,1520,1524,1528,1532,1536,1540,1544,1548,1552,1556,1560,1564,1568,1572,1576,1580,1584,1588,1592,1596,1600,1604,1608,1612,1616,1620,1624,1628,1632],{"title":1353,"path":1354,"stem":1355},"Що таке десктопна розробка?","/csharp/desktop-ui/what-is-desktop-dev","01.csharp/12.desktop-ui/01.what-is-desktop-dev",{"title":1357,"path":1358,"stem":1359},"Архітектура WPF — як влаштований графічний інтерфейс","/csharp/desktop-ui/wpf-architecture","01.csharp/12.desktop-ui/02.wpf-architecture",{"title":1361,"path":1362,"stem":1363},"Перший WPF-проєкт — від нуля до вікна","/csharp/desktop-ui/first-wpf-app","01.csharp/12.desktop-ui/03.first-wpf-app",{"title":1365,"path":1366,"stem":1367},"Перший Avalonia-проєкт: WPF для всіх платформ","/csharp/desktop-ui/03a.first-avalonia-app","01.csharp/12.desktop-ui/03a.first-avalonia-app",{"title":1369,"path":1370,"stem":1371},"XAML: декларативний інтерфейс","/csharp/desktop-ui/xaml-basics","01.csharp/12.desktop-ui/04.xaml-basics",{"title":1373,"path":1374,"stem":1375},"Fluent UI у WPF — сучасний дизайн Windows 11","/csharp/desktop-ui/04a.wpf-fluent-ui","01.csharp/12.desktop-ui/04a.wpf-fluent-ui",{"title":1377,"path":1378,"stem":1379},"WPF UI — сучасна бібліотека Fluent контролів","/csharp/desktop-ui/04b.wpf-ui-library","01.csharp/12.desktop-ui/04b.wpf-ui-library",{"title":1381,"path":1382,"stem":1383},"HandyControl — велика бібліотека UI контролів для WPF","/csharp/desktop-ui/04c.handycontrol-library","01.csharp/12.desktop-ui/04c.handycontrol-library",{"title":1385,"path":1386,"stem":1387},"Простори імен та ресурси XAML","/csharp/desktop-ui/xaml-namespaces-resources","01.csharp/12.desktop-ui/05.xaml-namespaces-resources",{"title":1389,"path":1390,"stem":1391},"XAML в Avalonia: ключові відмінності від WPF","/csharp/desktop-ui/05a.avalonia-xaml-differences","01.csharp/12.desktop-ui/05a.avalonia-xaml-differences",{"title":1393,"path":1394,"stem":1395},"Розширення розмітки XAML (Markup Extensions)","/csharp/desktop-ui/xaml-markup-extensions","01.csharp/12.desktop-ui/06.xaml-markup-extensions",{"title":1397,"path":1398,"stem":1399},"Панелі Layout: StackPanel, WrapPanel, DockPanel","/csharp/desktop-ui/layout-panels-part1","01.csharp/12.desktop-ui/07.layout-panels-part1",{"title":1401,"path":1402,"stem":1403},"Grid, Canvas, UniformGrid","/csharp/desktop-ui/layout-panels-part2","01.csharp/12.desktop-ui/07.layout-panels-part2",{"title":1405,"path":1406,"stem":1407},"Просунуті техніки Layout","/csharp/desktop-ui/layout-advanced","01.csharp/12.desktop-ui/08.layout-advanced",{"title":1409,"path":1410,"stem":1411},"Адаптивний Layout та найкращі практики","/csharp/desktop-ui/layout-responsive","01.csharp/12.desktop-ui/09.layout-responsive",{"title":1413,"path":1414,"stem":1415},"Layout в Avalonia: відмінності та нові можливості","/csharp/desktop-ui/09a.layout-avalonia","01.csharp/12.desktop-ui/09a.layout-avalonia",{"title":1417,"path":1418,"stem":1419},"Button, Image, ProgressBar та інші базові контроли","/csharp/desktop-ui/basic-controls","01.csharp/12.desktop-ui/10.basic-controls",{"title":1421,"path":1422,"stem":1423},"Контроли в Avalonia: відмінності від WPF","/csharp/desktop-ui/10a.controls-avalonia","01.csharp/12.desktop-ui/10a.controls-avalonia",{"title":1425,"path":1426,"stem":1427},"Текстові контроли — TextBlock, TextBox, RichTextBox","/csharp/desktop-ui/text-controls","01.csharp/12.desktop-ui/11.text-controls",{"title":1429,"path":1430,"stem":1431},"Контроли вибору — CheckBox, RadioButton, ComboBox, ListBox, DatePicker","/csharp/desktop-ui/selection-controls","01.csharp/12.desktop-ui/12.selection-controls",{"title":1433,"path":1434,"stem":1435},"Content Model — GroupBox, Expander, TabControl, StatusBar","/csharp/desktop-ui/content-controls","01.csharp/12.desktop-ui/13.content-controls",{"title":1437,"path":1438,"stem":1439},"UI/UX принципи десктопних застосунків","/csharp/desktop-ui/13a.ui-ux-principles","01.csharp/12.desktop-ui/13a.ui-ux-principles",{"title":1441,"path":1442,"stem":1443},"Dependency Properties — Концепція та Value Resolution","/csharp/desktop-ui/dependency-properties-part1","01.csharp/12.desktop-ui/14.dependency-properties-part1",{"title":1445,"path":1446,"stem":1447},"Avalonia Property System — StyledProperty та DirectProperty","/csharp/desktop-ui/14a.avalonia-property-system","01.csharp/12.desktop-ui/14a.avalonia-property-system",{"title":1449,"path":1450,"stem":1451},"Attached Properties — Властивості без меж","/csharp/desktop-ui/attached-properties","01.csharp/12.desktop-ui/15.attached-properties",{"title":1453,"path":1454,"stem":1455},"Routed Events — Маршрутизація подій у WPF","/csharp/desktop-ui/routed-events","01.csharp/12.desktop-ui/16.routed-events",{"title":1457,"path":1458,"stem":1459},"Data Binding — Від Code-Behind до Декларативності","/csharp/desktop-ui/data-binding-basics-part1","01.csharp/12.desktop-ui/17.data-binding-basics-part1",{"title":1461,"path":1462,"stem":1463},"INotifyPropertyChanged — Живе оновлення UI","/csharp/desktop-ui/data-binding-basics-part2","01.csharp/12.desktop-ui/17.data-binding-basics-part2",{"title":1465,"path":1466,"stem":1467},"Compiled Bindings в Avalonia — Безпека на етапі компіляції","/csharp/desktop-ui/17a.avalonia-compiled-bindings","01.csharp/12.desktop-ui/17a.avalonia-compiled-bindings",{"title":1469,"path":1470,"stem":1471},"Просунутий Data Binding — ElementName, RelativeSource, MultiBinding","/csharp/desktop-ui/data-binding-advanced","01.csharp/12.desktop-ui/18.data-binding-advanced",{"title":1473,"path":1474,"stem":1475},"Value Converters — Перетворення типів даних у Data Binding","/csharp/desktop-ui/value-converters","01.csharp/12.desktop-ui/19.value-converters",{"title":1477,"path":1478,"stem":1479},"Data Templates — Візуалізація об'єктів у WPF","/csharp/desktop-ui/data-templates","01.csharp/12.desktop-ui/20.data-templates",{"title":1481,"path":1482,"stem":1483},"Collections Binding Part 1 — ObservableCollection та ItemsControl","/csharp/desktop-ui/collections-binding-part1","01.csharp/12.desktop-ui/21.collections-binding-part1",{"title":1485,"path":1486,"stem":1487},"Collections Binding Part 2 — ICollectionView, Filtering, Sorting та Virtualization","/csharp/desktop-ui/collections-binding-part2","01.csharp/12.desktop-ui/21.collections-binding-part2",{"title":1489,"path":1490,"stem":1491},"MVVM Pattern — Від Spaghetti Code до архітектури","/csharp/desktop-ui/mvvm-pattern","01.csharp/12.desktop-ui/22.mvvm-pattern",{"title":1493,"path":1494,"stem":1495},"ViewModel Implementation — Від BaseViewModel до валідації","/csharp/desktop-ui/viewmodel-implementation","01.csharp/12.desktop-ui/23.viewmodel-implementation",{"title":1497,"path":1498,"stem":1499},"Commands — Від event handlers до декларативних команд","/csharp/desktop-ui/commands","01.csharp/12.desktop-ui/24.commands",{"title":1501,"path":1502,"stem":1503},"MVVM Toolkit — MVVM без boilerplate через Source Generators","/csharp/desktop-ui/mvvm-toolkit","01.csharp/12.desktop-ui/25.mvvm-toolkit",{"title":1505,"path":1506,"stem":1507},"Messenger Pattern — Комунікація між ViewModel без прямих посилань","/csharp/desktop-ui/messenger-pattern","01.csharp/12.desktop-ui/26.messenger-pattern",{"title":1509,"path":1510,"stem":1511},"Стилі WPF — CSS для десктопу","/csharp/desktop-ui/styles-basics","01.csharp/12.desktop-ui/27.styles-basics",{"title":1513,"path":1514,"stem":1515},"CSS-like стилі Avalonia","/csharp/desktop-ui/27a.avalonia-css-styling","01.csharp/12.desktop-ui/27a.avalonia-css-styling",{"title":1517,"path":1518,"stem":1519},"Control Templates — Частина 1. Концепція та TemplateBinding","/csharp/desktop-ui/control-templates-part1","01.csharp/12.desktop-ui/28.control-templates-part1",{"title":1521,"path":1522,"stem":1523},"Control Templates — Частина 2. Named Parts та ContentPresenter","/csharp/desktop-ui/control-templates-part2","01.csharp/12.desktop-ui/28.control-templates-part2",{"title":1525,"path":1526,"stem":1527},"Control Themes в Avalonia — нова ера стилізації","/csharp/desktop-ui/28a.avalonia-control-themes","01.csharp/12.desktop-ui/28a.avalonia-control-themes",{"title":1529,"path":1530,"stem":1531},"Triggers та Visual State Manager у WPF","/csharp/desktop-ui/triggers-visual-states","01.csharp/12.desktop-ui/29.triggers-visual-states",{"title":1533,"path":1534,"stem":1535},"Pseudo-classes в Avalonia — замість WPF Triggers","/csharp/desktop-ui/29a.avalonia-pseudo-classes","01.csharp/12.desktop-ui/29a.avalonia-pseudo-classes",{"title":1537,"path":1538,"stem":1539},"Теми та ресурсні словники у WPF","/csharp/desktop-ui/resources-themes","01.csharp/12.desktop-ui/30.resources-themes",{"title":1541,"path":1542,"stem":1543},"Avalonia Themes — Fluent Design та система тематизації","/csharp/desktop-ui/30a.avalonia-themes-fluent","01.csharp/12.desktop-ui/30a.avalonia-themes-fluent",{"title":1545,"path":1546,"stem":1547},"Контроли колекцій — глибоке занурення","/csharp/desktop-ui/collection-controls","01.csharp/12.desktop-ui/31.collection-controls",{"title":1549,"path":1550,"stem":1551},"DataGrid — колонки та базове відображення","/csharp/desktop-ui/datagrid-part1","01.csharp/12.desktop-ui/32.datagrid-part1",{"title":1553,"path":1554,"stem":1555},"DataGrid — сортування, фільтрація, редагування","/csharp/desktop-ui/datagrid-part2","01.csharp/12.desktop-ui/32.datagrid-part2",{"title":1557,"path":1558,"stem":1559},"TreeView та GridView","/csharp/desktop-ui/treeview-listview","01.csharp/12.desktop-ui/33.treeview-listview",{"title":1561,"path":1562,"stem":1563},"Меню, Toolbar, ContextMenu, StatusBar","/csharp/desktop-ui/menus-toolbars","01.csharp/12.desktop-ui/34.menus-toolbars",{"title":1565,"path":1566,"stem":1567},"Навігація та керування вікнами. Частина 1: вікна та сторінки","/csharp/desktop-ui/navigation-windows-part1","01.csharp/12.desktop-ui/35.navigation-windows-part1",{"title":1569,"path":1570,"stem":1571},"Навігація та керування вікнами. Частина 2: MVVM-навігація","/csharp/desktop-ui/navigation-windows-part2","01.csharp/12.desktop-ui/35.navigation-windows-part2",{"title":1573,"path":1574,"stem":1575},"Avalonia — Навігація та діалоги","/csharp/desktop-ui/35a.avalonia-navigation-dialogs","01.csharp/12.desktop-ui/35a.avalonia-navigation-dialogs",{"title":1577,"path":1578,"stem":1579},"Діалоги та File Pickers у WPF","/csharp/desktop-ui/dialogs-file-pickers","01.csharp/12.desktop-ui/36.dialogs-file-pickers",{"title":1581,"path":1582,"stem":1583},"UserControl: компонентний підхід у WPF","/csharp/desktop-ui/user-controls","01.csharp/12.desktop-ui/37.user-controls",{"title":1585,"path":1586,"stem":1587},"Custom Controls: Lookless Controls у WPF","/csharp/desktop-ui/custom-controls","01.csharp/12.desktop-ui/38.custom-controls",{"title":1589,"path":1590,"stem":1591},"Avalonia TemplatedControl — Lookless Controls","/csharp/desktop-ui/38a.avalonia-templated-controls","01.csharp/12.desktop-ui/38a.avalonia-templated-controls",{"title":1593,"path":1594,"stem":1595},"Анімації у WPF: Storyboard та Easing Functions","/csharp/desktop-ui/animations-transitions","01.csharp/12.desktop-ui/39.animations-transitions",{"title":1597,"path":1598,"stem":1599},"Анімації в Avalonia","/csharp/desktop-ui/39a.avalonia-animations","01.csharp/12.desktop-ui/39a.avalonia-animations",{"title":1601,"path":1602,"stem":1603},"2D Графіка та Мультимедіа у WPF","/csharp/desktop-ui/media-graphics","01.csharp/12.desktop-ui/40.media-graphics",{"title":1605,"path":1606,"stem":1607},"Dependency Injection у WPF та Avalonia","/csharp/desktop-ui/di-integration","01.csharp/12.desktop-ui/41.di-integration",{"title":1609,"path":1610,"stem":1611},"SQLite та EF Core у десктопних додатках","/csharp/desktop-ui/data-persistence-part1","01.csharp/12.desktop-ui/42.data-persistence-part1",{"title":1613,"path":1614,"stem":1615},"Repository Pattern та Unit of Work","/csharp/desktop-ui/data-persistence-part2","01.csharp/12.desktop-ui/43.data-persistence-part2",{"title":1617,"path":1618,"stem":1619},"Тестування ViewModels","/csharp/desktop-ui/viewmodel-testing","01.csharp/12.desktop-ui/44.viewmodel-testing",{"title":1621,"path":1622,"stem":1623},"Avalonia Headless Testing — тестування UI без вікон","/csharp/desktop-ui/44a.avalonia-headless-testing","01.csharp/12.desktop-ui/44a.avalonia-headless-testing",{"title":1625,"path":1626,"stem":1627},"Кросплатформна розробка з Avalonia","/csharp/desktop-ui/avalonia-cross-platform","01.csharp/12.desktop-ui/45.avalonia-cross-platform",{"title":1629,"path":1630,"stem":1631},"Пакування та розгортання Avalonia додатків","/csharp/desktop-ui/avalonia-packaging-deployment","01.csharp/12.desktop-ui/46.avalonia-packaging-deployment",{"title":1633,"path":1634,"stem":1635},"Розгортання WPF застосунків","/csharp/desktop-ui/wpf-packaging-deployment","01.csharp/12.desktop-ui/47.wpf-packaging-deployment",{"title":1637,"path":1638,"stem":1639},"C# & .NET: The Ultimate Roadmap","/csharp/roadmap","01.csharp/roadmap",{"title":1641,"icon":1642,"path":1643,"stem":1644,"children":1645,"page":59},"C++","i-devicon-cplusplus","/cpp","02.cpp",[1646,1650,1654,1658,1662,1666,1670,1674,1678,1681,1685,1689,1693,1697,1701,1705,1709,1713,1717,1721,1725,1729,1733,1737,1741,1745,1749,1753,1757,1761],{"title":1647,"path":1648,"stem":1649},"Вступ у програмування та алгоритми","/cpp/intro-algorithms","02.cpp/01.intro-algorithms",{"title":1651,"path":1652,"stem":1653},"Code Style: угоди про оформлення коду","/cpp/code-style","02.cpp/02.code-style",{"title":1655,"path":1656,"stem":1657},"Середовище розробки та перший 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типу void","/cpp/void-pointers","02.cpp/20.void-pointers",{"title":1726,"path":1727,"stem":1728},"Вказівники на вказівники","/cpp/pointers-to-pointers","02.cpp/21.pointers-to-pointers",{"title":1730,"path":1731,"stem":1732},"Оператор доступу до членів через вказівник (->)","/cpp/member-access-operator","02.cpp/22.member-access-operator",{"title":1734,"path":1735,"stem":1736},"Цикл for-each (Range-based for)","/cpp/foreach-loop","02.cpp/23.foreach-loop",{"title":1738,"path":1739,"stem":1740},"Вказівники на функції","/cpp/function-pointers","02.cpp/24.function-pointers",{"title":1742,"path":1743,"stem":1744},"Лямбда-вирази","/cpp/lambdas","02.cpp/25.lambdas",{"title":1746,"path":1747,"stem":1748},"Лямбда-захоплення","/cpp/lambda-captures","02.cpp/26.lambda-captures",{"title":1750,"path":1751,"stem":1752},"Еліпсис","/cpp/ellipsis","02.cpp/27.ellipsis",{"title":1754,"path":1755,"stem":1756},"Аргументи командного рядка","/cpp/command-line-arguments","02.cpp/28.command-line-arguments",{"title":1758,"path":1759,"stem":1760},"Перерахування (enum)","/cpp/enum","02.cpp/29.enum",{"title":1762,"path":1763,"stem":1764},"План навчання: Курс C++ — Продовження (Статті 29–60+)","/cpp/curriculum-plan","02.cpp/curriculum-plan",{"title":1766,"icon":1767,"path":1768,"stem":1769,"children":1770,"page":59},"JavaScript","i-devicon-javascript","/javascript","03.javascript",[1771,1797,1851,1873,2177,2215],{"title":1772,"icon":1773,"path":1774,"stem":1775,"children":1776,"page":59},"Events","i-lucide-mouse-pointer-click","/javascript/events","03.javascript/01.events",[1777,1781,1785,1789,1793],{"title":1778,"path":1779,"stem":1780},"Вступ до подій браузера","/javascript/events/intro","03.javascript/01.events/01.intro",{"title":1782,"path":1783,"stem":1784},"Бульбашковий механізм (Bubbling) та занурення (Capturing)","/javascript/events/bubbling-capturing","03.javascript/01.events/02.bubbling-capturing",{"title":1786,"path":1787,"stem":1788},"Делегування подій (Event Delegation)","/javascript/events/delegate-events","03.javascript/01.events/03.delegate-events",{"title":1790,"path":1791,"stem":1792},"Типові дії браузера та preventDefault()","/javascript/events/prevent-default","03.javascript/01.events/04.prevent-default",{"title":1794,"path":1795,"stem":1796},"Запуск користувацьких подій (Custom Events)","/javascript/events/custom-events","03.javascript/01.events/05.custom-events",{"title":1798,"icon":1799,"path":1800,"stem":1801,"children":1802,"page":59},"Network","i-lucide-globe","/javascript/network","03.javascript/02.network",[1803,1807,1811,1815,1819,1823,1827,1831,1835,1839,1843,1847],{"title":1804,"path":1805,"stem":1806},"Fetch API - Сучасний підхід до HTTP-запитів","/javascript/network/01-fetch-api","03.javascript/02.network/01-fetch-api",{"title":1808,"path":1809,"stem":1810},"FormData - Робота з формами та файлами","/javascript/network/02-formdata","03.javascript/02.network/02-formdata",{"title":1812,"path":1813,"stem":1814},"Відстеження прогресу завантаження","/javascript/network/03-download-progress","03.javascript/02.network/03-download-progress",{"title":1816,"path":1817,"stem":1818},"Переривання fetch-запитів","/javascript/network/04-abort-requests","03.javascript/02.network/04-abort-requests",{"title":1820,"path":1821,"stem":1822},"CORS - Запити між різними джерелами","/javascript/network/05-cors","03.javascript/02.network/05-cors",{"title":1824,"path":1825,"stem":1826},"Fetch API - Повний довідник опцій","/javascript/network/06-fetch-options","03.javascript/02.network/06-fetch-options",{"title":1828,"path":1829,"stem":1830},"URL Objects - Робота з посиланнями","/javascript/network/07-url-objects","03.javascript/02.network/07-url-objects",{"title":1832,"path":1833,"stem":1834},"XMLHttpRequest - AJAX та низькорівневі запити","/javascript/network/08-xmlhttprequest","03.javascript/02.network/08-xmlhttprequest",{"title":1836,"path":1837,"stem":1838},"Відновлюване завантаження файлів","/javascript/network/09-resumable-upload","03.javascript/02.network/09-resumable-upload",{"title":1840,"path":1841,"stem":1842},"Cookies, document.cookie та світ після \"Cookiepocalypse\"","/javascript/network/10-cookies","03.javascript/02.network/10-cookies",{"title":1844,"path":1845,"stem":1846},"js-cookie: Керування Cookies без Болю","/javascript/network/11-js-cookie","03.javascript/02.network/11-js-cookie",{"title":1848,"path":1849,"stem":1850},"Axios: Потужний HTTP-клієнт для JavaScript","/javascript/network/12-axios","03.javascript/02.network/12-axios",{"title":1852,"icon":1853,"path":1854,"stem":1855,"children":1856,"page":59},"Bom","i-lucide-monitor","/javascript/bom","03.javascript/03.bom",[1857,1861,1865,1869],{"title":1858,"path":1859,"stem":1860},"LocalStorage, SessionStorage та patterns збереження даних","/javascript/bom/01-localstorage","03.javascript/03.bom/01-localstorage",{"title":1862,"path":1863,"stem":1864},"Location Object - Керування адресою сторінки","/javascript/bom/02-location-object","03.javascript/03.bom/02-location-object",{"title":1866,"path":1867,"stem":1868},"History API - Керування історією браузера","/javascript/bom/03-history-api","03.javascript/03.bom/03-history-api",{"title":1870,"path":1871,"stem":1872},"Navigator Object - Ідентифікація та Можливості Пристрою","/javascript/bom/04-navigator-object","03.javascript/03.bom/04-navigator-object",{"title":1874,"icon":1875,"path":1876,"stem":1877,"children":1878},"React","i-devicon-react","/javascript/react","03.javascript/04.react/index",[1879,1880,1884,1888,1892,1896,1959,1994,2146],{"title":1874,"path":1876,"stem":1877},{"title":1881,"path":1882,"stem":1883},"Робота з Формами в React","/javascript/react/react-forms","03.javascript/04.react/01.react-forms",{"title":1885,"path":1886,"stem":1887},"React Hook Form: Професійна Робота з Формами","/javascript/react/react-hook-form","03.javascript/04.react/02.react-hook-form",{"title":1889,"path":1890,"stem":1891},"React Hook Form: Глибоке Розуміння Архітектури та Оптимізації","/javascript/react/react-hook-form-new","03.javascript/04.react/02.react-hook-form-new",{"title":1893,"path":1894,"stem":1895},"Axios та React: Професійна Архітектура Запитів","/javascript/react/data-fetching-axios","03.javascript/04.react/03.data-fetching-axios",{"title":1897,"icon":132,"path":1898,"stem":1899,"children":1900},"Tanstack Query","/javascript/react/tanstack-query","03.javascript/04.react/04.tanstack-query/index",[1901,1903,1907,1911,1915,1919,1923,1927,1931,1935,1939,1943,1947,1951,1955],{"title":1902,"path":1898,"stem":1899},"TanStack Query: Майстерність Керування Станом Сервера",{"title":1904,"path":1905,"stem":1906},"Парадигма Server State: Чому useEffect недостатньо","/javascript/react/tanstack-query/server-state-paradigm","03.javascript/04.react/04.tanstack-query/01.server-state-paradigm",{"title":1908,"path":1909,"stem":1910},"Встановлення та Налаштування: Фундамент","/javascript/react/tanstack-query/installation-and-devtools","03.javascript/04.react/04.tanstack-query/02.installation-and-devtools",{"title":1912,"path":1913,"stem":1914},"Основи Запитів та Магія Ключів","/javascript/react/tanstack-query/query-basics-and-keys","03.javascript/04.react/04.tanstack-query/03.query-basics-and-keys",{"title":1916,"path":1917,"stem":1918},"Синхронізація Даних: Життєвий Цикл Запиту","/javascript/react/tanstack-query/data-synchronization","03.javascript/04.react/04.tanstack-query/04.data-synchronization",{"title":1920,"path":1921,"stem":1922},"Мутації та Інвалідація: Зміна Даних","/javascript/react/tanstack-query/mutations-and-invalidation","03.javascript/04.react/04.tanstack-query/05.mutations-and-invalidation",{"title":1924,"path":1925,"stem":1926},"Оптимістичні Оновлення: Швидше за Світло","/javascript/react/tanstack-query/optimistic-updates","03.javascript/04.react/04.tanstack-query/06.optimistic-updates",{"title":1928,"path":1929,"stem":1930},"Пагінація та Infinite Scroll","/javascript/react/tanstack-query/pagination-and-load-more","03.javascript/04.react/04.tanstack-query/07.pagination-and-load-more",{"title":1932,"path":1933,"stem":1934},"Просунуті Патерни та Оптимізація","/javascript/react/tanstack-query/advanced-patterns","03.javascript/04.react/04.tanstack-query/08.advanced-patterns",{"title":1936,"path":1937,"stem":1938},"Архітектура та Best Practices","/javascript/react/tanstack-query/architecture-and-best-practices","03.javascript/04.react/04.tanstack-query/09.architecture-and-best-practices",{"title":1940,"path":1941,"stem":1942},"Server-Side Rendering (SSR) та Гідратація","/javascript/react/tanstack-query/server-side-rendering","03.javascript/04.react/04.tanstack-query/10.server-side-rendering",{"title":1944,"path":1945,"stem":1946},"Стратегії Тестування","/javascript/react/tanstack-query/testing-strategies","03.javascript/04.react/04.tanstack-query/11.testing-strategies",{"title":1948,"path":1949,"stem":1950},"Аутентифікація та Обробка Помилок","/javascript/react/tanstack-query/authentication-and-errors","03.javascript/04.react/04.tanstack-query/12.authentication-and-errors",{"title":1952,"path":1953,"stem":1954},"React Suspense та Майбутнє","/javascript/react/tanstack-query/react-suspense","03.javascript/04.react/04.tanstack-query/13.react-suspense",{"title":1956,"path":1957,"stem":1958},"Глибоке Занурення в Продуктивність","/javascript/react/tanstack-query/performance-deep-dive","03.javascript/04.react/04.tanstack-query/14.performance-deep-dive",{"title":1960,"icon":1875,"path":1961,"stem":1962,"children":1963},"React Router","/javascript/react/react-router","03.javascript/04.react/05.react-router/index",[1964,1966,1970,1974,1978,1982,1986,1990],{"title":1965,"path":1961,"stem":1962},"React Router: Навігаційна система сучасного вебу",{"title":1967,"path":1968,"stem":1969},"Налаштування та Базовий Роутинг","/javascript/react/react-router/setup-and-basic-routing","03.javascript/04.react/05.react-router/01.setup-and-basic-routing",{"title":1971,"path":1972,"stem":1973},"Динамічна Навігація","/javascript/react/react-router/navigation-and-links","03.javascript/04.react/05.react-router/02.navigation-and-links",{"title":1975,"path":1976,"stem":1977},"Вкладені Маршрути та Макети","/javascript/react/react-router/nested-routes-and-layouts","03.javascript/04.react/05.react-router/03.nested-routes-and-layouts",{"title":1979,"path":1980,"stem":1981},"Динамічні Маршрути та Параметри","/javascript/react/react-router/dynamic-routing","03.javascript/04.react/05.react-router/04.dynamic-routing",{"title":1983,"path":1984,"stem":1985},"Data APIs: Loaders та Actions","/javascript/react/react-router/data-loading","03.javascript/04.react/05.react-router/05.data-loading",{"title":1987,"path":1988,"stem":1989},"Просунуті Патерни","/javascript/react/react-router/advanced-patterns","03.javascript/04.react/05.react-router/06.advanced-patterns",{"title":1991,"path":1992,"stem":1993},"Legacy Routing: Компонентний підхід","/javascript/react/react-router/legacy-routing","03.javascript/04.react/05.react-router/07.legacy-routing",{"title":1995,"icon":132,"path":1996,"stem":1997,"children":1998},"Redux","/javascript/react/redux","03.javascript/04.react/06.redux/index",[1999,2001,2017,2046,2055,2076,2092,2121],{"title":2000,"path":1996,"stem":1997},"Redux: Еволюція управління станом",{"title":14,"icon":15,"path":2002,"stem":2003,"children":2004,"page":59},"/javascript/react/redux/fundamentals","03.javascript/04.react/06.redux/01.fundamentals",[2005,2009,2013],{"title":2006,"path":2007,"stem":2008},"Вступ до State Management","/javascript/react/redux/fundamentals/intro-state-management","03.javascript/04.react/06.redux/01.fundamentals/01.intro-state-management",{"title":2010,"path":2011,"stem":2012},"Філософія Redux та Три Принципи","/javascript/react/redux/fundamentals/redux-philosophy","03.javascript/04.react/06.redux/01.fundamentals/02.redux-philosophy",{"title":2014,"path":2015,"stem":2016},"Чисті функції та Іммутабельність","/javascript/react/redux/fundamentals/pure-functions-immutability","03.javascript/04.react/06.redux/01.fundamentals/03.pure-functions-immutability",{"title":2018,"icon":132,"path":2019,"stem":2020,"children":2021,"page":59},"Classic Redux","/javascript/react/redux/classic-redux","03.javascript/04.react/06.redux/02.classic-redux",[2022,2026,2030,2034,2038,2042],{"title":2023,"path":2024,"stem":2025},"Створення Store (Classic Redux)","/javascript/react/redux/classic-redux/store-setup","03.javascript/04.react/06.redux/02.classic-redux/01.store-setup",{"title":2027,"path":2028,"stem":2029},"Actions, Constants та Action Creators","/javascript/react/redux/classic-redux/actions-constants","03.javascript/04.react/06.redux/02.classic-redux/02.actions-constants",{"title":2031,"path":2032,"stem":2033},"Логіка Reducers","/javascript/react/redux/classic-redux/reducers","03.javascript/04.react/06.redux/02.classic-redux/03.reducers",{"title":2035,"path":2036,"stem":2037},"Комбінування Reducers (Root Reducer)","/javascript/react/redux/classic-redux/data-flow","03.javascript/04.react/06.redux/02.classic-redux/04.data-flow",{"title":2039,"path":2040,"stem":2041},"Підключення до React (React-Redux)","/javascript/react/redux/classic-redux/react-redux-connection","03.javascript/04.react/06.redux/02.classic-redux/05.react-redux-connection",{"title":2043,"path":2044,"stem":2045},"Middleware та Асинхронність (Redux Thunk)","/javascript/react/redux/classic-redux/middleware-thunk","03.javascript/04.react/06.redux/02.classic-redux/06.middleware-thunk",{"title":2047,"icon":132,"path":2048,"stem":2049,"children":2050,"page":59},"Transition To Rtk","/javascript/react/redux/transition-to-rtk","03.javascript/04.react/06.redux/03.transition-to-rtk",[2051],{"title":2052,"path":2053,"stem":2054},"Проблеми класичного Redux","/javascript/react/redux/transition-to-rtk/problems-with-classic","03.javascript/04.react/06.redux/03.transition-to-rtk/01.problems-with-classic",{"title":2056,"icon":132,"path":2057,"stem":2058,"children":2059,"page":59},"Redux Toolkit","/javascript/react/redux/redux-toolkit","03.javascript/04.react/06.redux/04.redux-toolkit",[2060,2064,2068,2072],{"title":2061,"path":2062,"stem":2063},"Налаштування Store з 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дружити","/java/pr2/impedance-mismatch","04.java/pr2/09.impedance-mismatch",{"title":2285,"path":2286,"stem":2287},"JDBC: Перший контакт із базою даних","/java/pr2/jdbc-fundamentals","04.java/pr2/10.jdbc-fundamentals",{"title":2289,"path":2290,"stem":2291},"Якість коду: Spotless, SpotBugs та SonarQube","/java/pr2/10a.code-quality","04.java/pr2/10a.code-quality",{"title":2293,"path":2294,"stem":2295},"Connection Pool: Патерн Object Pool для JDBC-з'єднань","/java/pr2/connection-pool","04.java/pr2/11.connection-pool",{"title":2297,"path":2298,"stem":2299},"Row Data Gateway: Об'єкт як обгортка рядка таблиці","/java/pr2/row-data-gateway","04.java/pr2/12.row-data-gateway",{"title":2301,"path":2302,"stem":2303},"Table Data Gateway: Фасад таблиці як архітектурний відступ","/java/pr2/table-data-gateway","04.java/pr2/13.table-data-gateway",{"title":2305,"path":2306,"stem":2307},"Repository + Data Mapper: Правильна шарова архітектура з JDBC","/java/pr2/repository-data-mapper","04.java/pr2/14.repository-data-mapper",{"title":2309,"path":2310,"stem":2311},"Identity Map: Кешування сутностей у рамках сесії","/java/pr2/identity-map","04.java/pr2/15.identity-map",{"title":2313,"path":2314,"stem":2315},"Unit of Work: Відстеження змін і координація JDBC-транзакцій","/java/pr2/unit-of-work","04.java/pr2/16.unit-of-work",{"title":2317,"path":2318,"stem":2319},"Strategy: Замінювані SQL-стратегії для підтримки різних СУБД","/java/pr2/strategy-sql","04.java/pr2/17.strategy-sql",{"title":2321,"path":2322,"stem":2323},"Proxy: Lazy Loading для One-To-Many колекцій","/java/pr2/proxy-lazy-loading","04.java/pr2/18.proxy-lazy-loading",{"title":2325,"path":2326,"stem":2327},"Generic Repository через Java Reflection: анотації та динамічний SQL","/java/pr2/generic-repository-reflection","04.java/pr2/19.generic-repository-reflection",{"title":2329,"path":2330,"stem":2331},"Specification Pattern: Композиція бізнес-правил для складних 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БД","/databases/intro/logical-schema","06.databases/01.intro/04.logical-schema",{"title":2381,"path":2382,"stem":2383},"Класифікація таблиць","/databases/intro/table-classification","06.databases/01.intro/05.table-classification",{"title":2385,"path":2386,"stem":2387},"PlantUML для баз даних","/databases/intro/plantuml-diagrams","06.databases/01.intro/06.plantuml-diagrams",{"title":2389,"icon":2354,"path":2390,"stem":2391,"children":2392,"page":59},"MS SQL Server Start","/databases/ms-sql-server-start","06.databases/02.ms-sql-server-start",[2393,2397,2403,2407],{"title":2394,"path":2395,"stem":2396},"Типи даних у MS SQL Server","/databases/ms-sql-server-start/data-types","06.databases/02.ms-sql-server-start/01.data-types",{"title":2398,"path":2399,"stem":2400,"children":2401},"Індекси у MS SQL 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TABLE)","/databases/sql/ddl-create-table","06.databases/03.sql/01.ddl-create-table",{"title":2425,"path":2426,"stem":2427},"DDL - Зміна та видалення таблиць (ALTER, DROP)","/databases/sql/ddl-alter-drop-table","06.databases/03.sql/02.ddl-alter-drop-table",{"title":2429,"path":2430,"stem":2431},"SELECT запити - Основи","/databases/sql/select-queries-fundamentals","06.databases/03.sql/03.select-queries-fundamentals",{"title":2433,"path":2434,"stem":2435},"SELECT запити - Розширені можливості","/databases/sql/select-queries-advanced","06.databases/03.sql/04.select-queries-advanced",{"title":2437,"path":2438,"stem":2439},"INSERT запити - Додавання даних","/databases/sql/insert-queries","06.databases/03.sql/05.insert-queries",{"title":2441,"path":2442,"stem":2443},"UPDATE та DELETE запити","/databases/sql/update-delete-queries","06.databases/03.sql/06.update-delete-queries",{"title":2445,"path":2446,"stem":2447},"Транзакції в SQL","/databases/sql/transactions","06.databases/03.sql/07.transactions",{"title":2449,"icon":2354,"path":2450,"stem":2451,"children":2452,"page":59},"Multi Table Databases","/databases/multi-table-databases","06.databases/04.multi-table-databases",[2453,2457,2461,2465,2469,2473],{"title":2454,"path":2455,"stem":2456},"Зв'язки та нормалізація БД","/databases/multi-table-databases/relationships-and-normalization","06.databases/04.multi-table-databases/00.relationships-and-normalization",{"title":2458,"path":2459,"stem":2460},"INNER JOIN - З'єднання таблиць","/databases/multi-table-databases/inner-join","06.databases/04.multi-table-databases/01.inner-join",{"title":2462,"path":2463,"stem":2464},"OUTER JOINs - LEFT, RIGHT, FULL","/databases/multi-table-databases/outer-joins","06.databases/04.multi-table-databases/02.outer-joins",{"title":2466,"path":2467,"stem":2468},"CROSS та SELF JOINs","/databases/multi-table-databases/cross-self-joins","06.databases/04.multi-table-databases/03.cross-self-joins",{"title":2470,"path":2471,"stem":2472},"Підзапити (Subqueries)","/databases/multi-table-databases/subqueries","06.databases/04.multi-table-databases/04.subqueries",{"title":2474,"path":2475,"stem":2476},"Агрегації з JOIN","/databases/multi-table-databases/aggregations-with-joins","06.databases/04.multi-table-databases/05.aggregations-with-joins",{"title":2478,"icon":2479,"path":2480,"stem":2481,"children":2482,"page":59},"Aggregate Functions","i-lucide-calculator","/databases/aggregate-functions","06.databases/05.aggregate-functions",[2483,2487,2491],{"title":2484,"path":2485,"stem":2486},"Функції агрегування в MS SQL Server","/databases/aggregate-functions/introduction-aggregate-functions","06.databases/05.aggregate-functions/01.introduction-aggregate-functions",{"title":2488,"path":2489,"stem":2490},"Групування даних в MS SQL Server","/databases/aggregate-functions/grouping-data","06.databases/05.aggregate-functions/02.grouping-data",{"title":2492,"path":2493,"stem":2494},"Підзапити з агрегатними функціями","/databases/aggregate-functions/subqueries-aggregates","06.databases/05.aggregate-functions/03.subqueries-aggregates",{"title":2496,"icon":2497,"path":2498,"stem":2499,"children":2500,"page":59},"Тригери та зберігаємі процедури","i-lucide-database-zap","/databases/triggers-stored-procedures","06.databases/07.triggers-stored-procedures",[2501,2505,2509,2513,2517,2521,2525],{"title":2502,"path":2503,"stem":2504},"DML-тригери","/databases/triggers-stored-procedures/dml-triggers","06.databases/07.triggers-stored-procedures/01.dml-triggers",{"title":2506,"path":2507,"stem":2508},"DDL-тригери","/databases/triggers-stored-procedures/ddl-triggers","06.databases/07.triggers-stored-procedures/02.ddl-triggers",{"title":2510,"path":2511,"stem":2512},"Transact-SQL розширення","/databases/triggers-stored-procedures/transact-sql-extensions","06.databases/07.triggers-stored-procedures/03.transact-sql-extensions",{"title":2514,"path":2515,"stem":2516},"Транзакції","/databases/triggers-stored-procedures/transactions","06.databases/07.triggers-stored-procedures/04.transactions",{"title":2518,"path":2519,"stem":2520},"Зберігаємі процедури","/databases/triggers-stored-procedures/stored-procedures","06.databases/07.triggers-stored-procedures/05.stored-procedures",{"title":2522,"path":2523,"stem":2524},"Користувацькі функції","/databases/triggers-stored-procedures/user-defined-functions","06.databases/07.triggers-stored-procedures/06.user-defined-functions",{"title":2526,"path":2527,"stem":2528},"Безпека баз 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пошук","i-lucide-search","/databases/full-text-search","06.databases/10.full-text-search",[2556],{"title":2551,"path":2557,"stem":2558},"/databases/full-text-search/full-text-search","06.databases/10.full-text-search/01.full-text-search",{"title":2560,"icon":2561,"path":2562,"stem":2563,"children":2564,"page":59},"Tools","i-lucide-wrench","/tools","07.tools",[2565],{"title":2566,"icon":2567,"path":2568,"stem":2569,"children":2570},"Docker","i-simple-icons-docker","/tools/docker","07.tools/01.docker/index",[2571,2573,2577,2581,2585,2589,2593,2597,2601,2605,2609,2613,2617,2621,2625,2629,2633,2637],{"title":2572,"path":2568,"stem":2569},"Docker: від нуля до production",{"title":2574,"path":2575,"stem":2576},"Контейнеризація — від проблеми до рішення","/tools/docker/containerization-concept","07.tools/01.docker/01.containerization-concept",{"title":2578,"path":2579,"stem":2580},"Docker — що це і навіщо?","/tools/docker/docker-what-and-why","07.tools/01.docker/02.docker-what-and-why",{"title":2582,"path":2583,"stem":2584},"Архітектура Docker Engine","/tools/docker/docker-architecture","07.tools/01.docker/03.docker-architecture",{"title":2586,"path":2587,"stem":2588},"Встановлення Docker","/tools/docker/installation","07.tools/01.docker/04.installation",{"title":2590,"path":2591,"stem":2592},"Перший контейнер — docker run","/tools/docker/first-container","07.tools/01.docker/05.first-container",{"title":2594,"path":2595,"stem":2596},"Життєвий цикл контейнера","/tools/docker/container-lifecycle","07.tools/01.docker/06.container-lifecycle",{"title":2598,"path":2599,"stem":2600},"Docker Images — фундаментальні концепції","/tools/docker/docker-images-fundamentals","07.tools/01.docker/07.docker-images-fundamentals",{"title":2602,"path":2603,"stem":2604},"Dockerfile — основи","/tools/docker/dockerfile-basics","07.tools/01.docker/08.dockerfile-basics",{"title":2606,"path":2607,"stem":2608},"Dockerfile — просунуті техніки","/tools/docker/dockerfile-advanced","07.tools/01.docker/09.dockerfile-advanced",{"title":2610,"path":2611,"stem":2612},"Build Context та кешування шарів","/tools/docker/build-context-and-cache","07.tools/01.docker/10.build-context-and-cache",{"title":2614,"path":2615,"stem":2616},"Реєстри Docker-образів","/tools/docker/image-registries","07.tools/01.docker/11.image-registries",{"title":2618,"path":2619,"stem":2620},"Контейнеризація .NET додатків","/tools/docker/dotnet-containerization","07.tools/01.docker/12.dotnet-containerization",{"title":2622,"path":2623,"stem":2624},"Томи та збереження даних","/tools/docker/volumes-and-data","07.tools/01.docker/13.volumes-and-data",{"title":2626,"path":2627,"stem":2628},"Основи мережі в Docker","/tools/docker/networking-basics","07.tools/01.docker/14.networking-basics",{"title":2630,"path":2631,"stem":2632},"Змінні оточення та конфігурація","/tools/docker/environment-and-configuration","07.tools/01.docker/15.environment-and-configuration",{"title":2634,"path":2635,"stem":2636},"Docker Compose — оркестрація контейнерів","/tools/docker/docker-compose-basics","07.tools/01.docker/16.docker-compose-basics",{"title":2638,"path":2639,"stem":2640},"Docker Compose — Multi-Service застосунки","/tools/docker/compose-multi-service","07.tools/01.docker/17.compose-multi-service",{"title":2642,"icon":2643,"path":2644,"stem":2645,"children":2646,"page":59},"Software Engineering","i-lucide-code-2","/software-engineering","09.software-engineering",[2647,2651,2655,2659,2663,2667,2671,2675,2679,2683,2687],{"title":2648,"path":2649,"stem":2650},"1. Аналіз предметної області. Експертні знання та складність","/software-engineering/intro.subdomains","09.software-engineering/01.intro.subdomains",{"title":2652,"path":2653,"stem":2654},"2. Обмежені контексти. Інтеграція обмежених контекстів","/software-engineering/integrating-limited-contexts","09.software-engineering/02.integrating-limited-contexts",{"title":2656,"path":2657,"stem":2658},"3. Реалізація простої бізнес-логіки","/software-engineering/simple","09.software-engineering/03.simple",{"title":2660,"path":2661,"stem":2662},"4. Опрацювання складної бізнес-логіки","/software-engineering/complex-business-logic","09.software-engineering/04.complex-business-logic",{"title":2664,"path":2665,"stem":2666},"5. Моделювання фактора часу. Подієво-орієнтована архітектура.","/software-engineering/modelling-the-time-factor","09.software-engineering/05.modelling-the-time-factor",{"title":2668,"path":2669,"stem":2670},"6. Архітектурні патерни","/software-engineering/architectural-patterns","09.software-engineering/06.architectural-patterns",{"title":2672,"path":2673,"stem":2674},"Паттерни взаємодії","/software-engineering/patterns-of-interaction","09.software-engineering/07.patterns-of-interaction",{"title":2676,"path":2677,"stem":2678},"Евристика проєктування","/software-engineering/design-heuristics","09.software-engineering/08.design-heuristics",{"title":2680,"path":2681,"stem":2682},"Еволюція проєктних рішень","/software-engineering/evolution-of-design-solutions","09.software-engineering/09.evolution-of-design-solutions",{"title":2684,"path":2685,"stem":2686},"EventStorming","/software-engineering/eventstorming","09.software-engineering/10.eventstorming",{"title":2688,"path":2689,"stem":2690},"DDD на практиці","/software-engineering/ddd-in-practice","09.software-engineering/11.ddd-in-practice",{"title":2692,"icon":943,"path":2693,"stem":2694,"children":2695,"page":59},"DDD","/ddd","10.ddd",[2696,2700,2704,2708,2712,2716,2720,2724,2728,2732,2736,2740,2744],{"title":2697,"path":2698,"stem":2699},"Аналіз предметної області","/ddd/domain-analysis","10.ddd/01.domain-analysis",{"title":2701,"path":2702,"stem":2703},"Експертні знання про предметну область","/ddd/domain-expert-knowledge","10.ddd/02.domain-expert-knowledge",{"title":2705,"path":2706,"stem":2707},"Як осмислити складність предметної області","/ddd/managing-domain-complexity","10.ddd/03.managing-domain-complexity",{"title":2709,"path":2710,"stem":2711},"Інтеграція обмежених контекстів","/ddd/bounded-context-integration","10.ddd/04.bounded-context-integration",{"title":2713,"path":2714,"stem":2715},"Реалізація простої бізнес-логіки","/ddd/simple-business-logic","10.ddd/05.simple-business-logic",{"title":2717,"path":2718,"stem":2719},"Обробка складної бізнес-логіки","/ddd/complex-business-logic","10.ddd/06.complex-business-logic",{"title":2721,"path":2722,"stem":2723},"Моделювання фактора часу","/ddd/time-modeling","10.ddd/07.time-modeling",{"title":2725,"path":2726,"stem":2727},"Глава 8. Архітектурні Патерни","/ddd/architectural-patterns","10.ddd/08.architectural-patterns",{"title":2729,"path":2730,"stem":2731},"Глава 9. Патерни Взаємодії","/ddd/interaction-patterns","10.ddd/09.interaction-patterns",{"title":2733,"path":2734,"stem":2735},"Глава 10. Проектні Евристики","/ddd/design-heuristics","10.ddd/10.design-heuristics",{"title":2737,"path":2738,"stem":2739},"Глава 11. Еволюція Проектних Рішень","/ddd/evolution-of-design-decisions","10.ddd/11.evolution-of-design-decisions",{"title":2741,"path":2742,"stem":2743},"Глава 12. EventStorming","/ddd/event-storming","10.ddd/12.event-storming",{"title":2745,"path":2746,"stem":2747},"Глава 13. DDD на Практиці","/ddd/ddd-in-practice","10.ddd/13.ddd-in-practice",{"title":2749,"icon":2750,"path":2751,"stem":2752,"children":2753,"page":59},"Media Streaming","i-lucide-video","/media-streaming","11.media-streaming",[2754,2758,2762,2766,2770,2774,2778],{"title":2755,"path":2756,"stem":2757},"01. Магія Стрімінгу: Що відбувається, коли ви натискаєте \"Play\"","/media-streaming/introduction","11.media-streaming/01.introduction",{"title":2759,"path":2760,"stem":2761},"02. Анатомія Медіа: Кодеки, Контейнери та Стиснення","/media-streaming/audio-video-anatomy","11.media-streaming/02.audio-video-anatomy",{"title":2763,"path":2764,"stem":2765},"03. The Gym: FFmpeg Deep Dive","/media-streaming/ffmpeg-gym","11.media-streaming/03.ffmpeg-gym",{"title":2767,"path":2768,"stem":2769},"04. HLS Protocol: HTTP Live Streaming у Деталях","/media-streaming/hls-protocol","11.media-streaming/04.hls-protocol",{"title":2771,"path":2772,"stem":2773},"05. DASH Protocol: Відкритий Стандарт","/media-streaming/dash-protocol","11.media-streaming/05.dash-protocol",{"title":2775,"path":2776,"stem":2777},"06. Масштабування: CDN та Adaptive Bitrate","/media-streaming/cdn-and-adaptive-bitrate","11.media-streaming/06.cdn-and-adaptive-bitrate",{"title":2779,"path":2780,"stem":2781},"07. Війна із Затримкою (Latency)","/media-streaming/realtime-latency","11.media-streaming/07.realtime-latency",{"title":2783,"icon":2784,"path":2785,"stem":2786,"children":2787,"page":59},"HTML & CSS","i-devicon-html5","/html-css","12.html-css",[2788,2792,2796,2800,2804,2808,2812,2816,2820,2824,2828,2832,2836,2840,2844,2848,2852,2856,2860,2864,2868,2872,2876,2880,2884,2888,2892,2896,2900,2904],{"title":2789,"path":2790,"stem":2791},"Вступ до HTML. Структура документа","/html-css/intro-html-structure","12.html-css/01.intro-html-structure",{"title":2793,"path":2794,"stem":2795},"Форматування тексту в HTML","/html-css/html-text-formatting","12.html-css/02.html-text-formatting",{"title":2797,"path":2798,"stem":2799},"Посилання та зображення в HTML","/html-css/html-links-images","12.html-css/03.html-links-images",{"title":2801,"path":2802,"stem":2803},"Списки та таблиці в HTML","/html-css/html-lists-tables","12.html-css/04.html-lists-tables",{"title":2805,"path":2806,"stem":2807},"Форми в HTML","/html-css/html-forms","12.html-css/05.html-forms",{"title":2809,"path":2810,"stem":2811},"Семантичні елементи HTML5","/html-css/html-semantic-elements","12.html-css/06.html-semantic-elements",{"title":2813,"path":2814,"stem":2815},"Мультимедіа та розширені елементи HTML","/html-css/html-multimedia-advanced","12.html-css/07.html-multimedia-advanced",{"title":2817,"path":2818,"stem":2819},"Мікророзмітка та SEO в HTML","/html-css/html-microdata-seo","12.html-css/08.html-microdata-seo",{"title":2821,"path":2822,"stem":2823},"Вступ до CSS. Селектори та специфічність","/html-css/css-intro-selectors","12.html-css/09.css-intro-selectors",{"title":2825,"path":2826,"stem":2827},"Блокова модель CSS. Відступи. Box Sizing","/html-css/css-box-model","12.html-css/10.css-box-model",{"title":2829,"path":2830,"stem":2831},"Розміри у CSS: повний довідник одиниць і ключових слів","/html-css/10a.css-sizing","12.html-css/10a.css-sizing",{"title":2833,"path":2834,"stem":2835},"Типографіка в CSS. Шрифти та текст","/html-css/css-typography","12.html-css/11.css-typography",{"title":2837,"path":2838,"stem":2839},"Кольори та фони в CSS","/html-css/css-colors-backgrounds","12.html-css/12.css-colors-backgrounds",{"title":2841,"path":2842,"stem":2843},"Тіні та фільтри в CSS","/html-css/12b.css-shadows-filters","12.html-css/12b.css-shadows-filters",{"title":2845,"path":2846,"stem":2847},"CSS Flexbox: Фундамент гнучких макетів","/html-css/css-flexbox-fundamentals","12.html-css/13.css-flexbox-fundamentals",{"title":2849,"path":2850,"stem":2851},"CSS Flexbox: Вирівнювання та Позиціонування","/html-css/css-flexbox-alignment-sizing-and-patterns","12.html-css/14.css-flexbox-alignment-sizing-and-patterns",{"title":2853,"path":2854,"stem":2855},"CSS Grid. Двовимірний макет. Частина 1","/html-css/css-layout-grid","12.html-css/15.css-layout-grid",{"title":2857,"path":2858,"stem":2859},"CSS Grid. Двовимірний макет. Частина 2","/html-css/css-layout-grid-advanced","12.html-css/16.css-layout-grid-advanced",{"title":2861,"path":2862,"stem":2863},"Позиціонування в CSS. Z-index. Stacking Context","/html-css/css-positioning","12.html-css/17.css-positioning",{"title":2865,"path":2866,"stem":2867},"CSS Анімації та Переходи","/html-css/css-animations-transitions","12.html-css/18.css-animations-transitions",{"title":2869,"path":2870,"stem":2871},"Адаптивний дизайн. Media Queries. Частина 1","/html-css/css-responsive-media-queries","12.html-css/19.css-responsive-media-queries",{"title":2873,"path":2874,"stem":2875},"Адаптивний дизайн. Частина 2: clamp(), Container Queries, @layer","/html-css/css-responsive-advanced","12.html-css/20.css-responsive-advanced",{"title":2877,"path":2878,"stem":2879},"CSS Custom Properties. Методології. Сучасний CSS","/html-css/css-variables-methodologies","12.html-css/21.css-variables-methodologies",{"title":2881,"path":2882,"stem":2883},"Сучасний CSS 2023–2025: Нові можливості","/html-css/css-modern-features","12.html-css/22.css-modern-features",{"title":2885,"path":2886,"stem":2887},"CSS Nesting, @layer, @scope та @property: нативний препроцесор","/html-css/22a.css-nesting-modern-syntax","12.html-css/22a.css-nesting-modern-syntax",{"title":2889,"path":2890,"stem":2891},"CSS для форм та інтерактивних станів","/html-css/css-forms-interactive-states","12.html-css/23.css-forms-interactive-states",{"title":2893,"path":2894,"stem":2895},"Доступність у CSS (CSS Accessibility)","/html-css/css-accessibility","12.html-css/24.css-accessibility",{"title":2897,"path":2898,"stem":2899},"CSS-функції та сучасні sizing primitives","/html-css/css-functions-sizing","12.html-css/25.css-functions-sizing",{"title":2901,"path":2902,"stem":2903},"Rendering Pipeline і CSS Performance","/html-css/css-rendering-performance","12.html-css/26.css-rendering-performance",{"title":2905,"path":2906,"stem":2907},"CSS Best Practices: типові ситуації та правильні рішення","/html-css/css-best-practices","12.html-css/27.css-best-practices",{"title":2909,"path":2910,"stem":2911,"children":2912,"page":59},"Tailwind","/tailwind","21.tailwind",[2913,2917,2921,2925,2929,2933,2937,2941],{"title":2914,"path":2915,"stem":2916},"Що таке Tailwind CSS і навіщо він потрібен","/tailwind/tailwind-intro-philosophy","21.tailwind/01.tailwind-intro-philosophy",{"title":2918,"path":2919,"stem":2920},"Встановлення та налаштування Tailwind CSS v4","/tailwind/tailwind-installation-setup","21.tailwind/02.tailwind-installation-setup",{"title":2922,"path":2923,"stem":2924},"Utility-класи: основи та система Tailwind","/tailwind/tailwind-utility-classes-core","21.tailwind/03.tailwind-utility-classes-core",{"title":2926,"path":2927,"stem":2928},"Layout: Flexbox та Grid через Tailwind","/tailwind/tailwind-flexbox-grid","21.tailwind/04.tailwind-flexbox-grid",{"title":2930,"path":2931,"stem":2932},"Кастомізація теми через @theme у Tailwind v4","/tailwind/tailwind-theme-customization","21.tailwind/05.tailwind-theme-customization",{"title":2934,"path":2935,"stem":2936},"Варіанти: hover, focus, responsive, dark mode та нові v4","/tailwind/tailwind-variants-states","21.tailwind/06.tailwind-variants-states",{"title":2938,"path":2939,"stem":2940},"Типографіка та система кольорів у Tailwind v4","/tailwind/tailwind-typography-colors","21.tailwind/07.tailwind-typography-colors",{"title":2942,"path":2943,"stem":2944},"Компоненти та повторюваність: @apply, @utility та патерни","/tailwind/tailwind-components-patterns","21.tailwind/08.tailwind-components-patterns",{"title":2946,"path":2947,"stem":2948},"Showcase Компонентів kostyl.dev","/test-new-components","98.test-new-components",{"id":2950,"title":487,"body":2951,"description":13538,"extension":13539,"links":13540,"meta":13541,"navigation":3131,"path":488,"seo":13542,"stem":489,"__hash__":13543},"docs/01.csharp/10.ef-core/07.relationships-basics.md",{"type":2952,"value":2953,"toc":13502},"minimark",[2954,2959,2964,2968,2971,3006,3009,3012,3016,3019,3026,3045,3059,3287,3290,3317,3319,3323,3326,3331,3334,3372,3375,3379,3393,3644,3647,3831,3844,3848,3855,4093,4194,4221,4240,4244,4467,4470,4556,4558,4562,4569,4572,4576,4579,4827,4834,4837,5029,5033,5036,5241,5244,5338,5437,5441,5448,5625,5636,5638,5642,5645,5649,5652,5728,5732,5735,5898,5901,5920,5933,6153,6156,6207,6211,6217,6338,6344,6419,6422,6445,6452,6454,6458,6461,6465,6634,6735,6742,6745,7001,7005,7016,7156,7162,7166,7173,7577,7584,7588,7595,7735,7738,7861,7868,7872,7875,8259,8262,8685,8688,9291,9294,9632,9651,9655,9670,9679,10282,10285,10514,10517,10674,10684,10687,10768,10777,11201,11204,11566,11574,11578,11581,11718,11720,11724,11730,11734,11737,11742,11763,11782,11854,11860,11865,11886,11893,12046,12052,12057,12081,12084,12165,12171,12176,12189,12194,12197,12314,12328,12330,12334,12337,12764,12766,12770,12773,12778,12785,12955,12960,12970,12975,13052,13057,13223,13225,13229,13421,13423,13427,13491,13498],[2955,2956,2958],"h1",{"id":2957},"звязки-one-to-one-та-one-to-many","Зв'язки: One-to-One та One-to-Many",[2960,2961,2963],"h2",{"id":2962},"чому-звязки-найскладніша-частина-orm","Чому зв'язки — найскладніша частина ORM",[2965,2966,2967],"p",{},"Якщо попросити досвідченого .NET розробника назвати тему в EF Core, де найчастіше роблять помилки, — більшість вкаже на зв'язки. Додавання нового запису до колекції і він не зберігається. Видалення батьківського запису і отримання FK-violation. Загрузка сутності і навігаційна властивість порожня, хоча дані в базі є. Cascade delete, що несподівано видаляє набагато більше, ніж очікувалось.",[2965,2969,2970],{},"Причина цих проблем — не в складності синтаксису EF Core. Він доволі простий. Причина — у тому, що зв'язки між сутностями мають кілька ортогональних вимірів, і кожен з них впливає на поведінку:",[2972,2973,2974,2982,2988,2994,3000],"ul",{},[2975,2976,2977,2981],"li",{},[2978,2979,2980],"strong",{},"Кардинальність",": один до одного, один до багатьох, багато до багатьох",[2975,2983,2984,2987],{},[2978,2985,2986],{},"Спрямованість",": є навігація тільки з одного боку чи з обох?",[2975,2989,2990,2993],{},[2978,2991,2992],{},"Обов'язковість",": FK може бути NULL чи ні?",[2975,2995,2996,2999],{},[2978,2997,2998],{},"Ролі",": хто є «принципалом» (батько), хто «залежним» (дитина)?",[2975,3001,3002,3005],{},[2978,3003,3004],{},"Поведінка при видаленні",": cascade, restrict, set null?",[2965,3007,3008],{},"Ця стаття розбирає перші два типи зв'язків — One-to-One і One-to-Many — не як набір API-викликів, а як концепцію з усіма наведеними вимірами. Розуміння кожного з них дозволить передбачати поведінку EF Core без звернення до документації.",[3010,3011],"hr",{},[2960,3013,3015],{"id":3014},"principal-і-dependent-фундаментальний-поділ","Principal і Dependent: фундаментальний поділ",[2965,3017,3018],{},"Перш ніж говорити про конкретні типи зв'язків, розберемо найважливіші поняття, яких не вистачає більшості пояснень.",[2965,3020,3021,3022,3025],{},"У будь-якому зв'язку між двома сутностями є ",[2978,3023,3024],{},"асиметрія",": одна сторона «знає» про іншу через зовнішній ключ, інша цього зовнішнього ключа не має.",[2965,3027,3028,3031,3032,3036,3037,3040,3041,3044],{},[2978,3029,3030],{},"Principal"," (головна сутність, «батько») — та, на яку посилаються. Вона містить первинний ключ, на який вказує зовнішній ключ іншої сторони. ",[3033,3034,3035],"code",{},"Author"," у прикладі книг — principal, бо ",[3033,3038,3039],{},"Book.AuthorId"," посилається на ",[3033,3042,3043],{},"Author.Id",".",[2965,3046,3047,3050,3051,3054,3055,3058],{},[2978,3048,3049],{},"Dependent"," (залежна сутність, «дитина») — та, що посилається. Вона містить зовнішній ключ. ",[3033,3052,3053],{},"Book"," — dependent, бо несе ",[3033,3056,3057],{},"AuthorId"," — пряме посилання на Author.",[3060,3061,3066],"pre",{"className":3062,"code":3063,"language":3064,"meta":3065,"style":3065},"language-csharp shiki shiki-themes light-plus dark-plus dark-plus","public class Author           // ← Principal\n{\n    public int Id { get; set; }  // PK — на нього посилаються\n\n    public ICollection\u003CBook> Books { get; set; } = new List\u003CBook>();\n}\n\npublic class Book             // ← Dependent\n{\n    public int Id { get; set; }\n\n    public int AuthorId { get; set; }            // FK — посилається на Author.Id\n    public Author Author { get; set; } = null!;  // Navigation property\n}\n","csharp","",[3033,3067,3068,3088,3095,3126,3133,3176,3182,3187,3200,3205,3225,3230,3254,3282],{"__ignoreMap":3065},[3069,3070,3073,3077,3080,3084],"span",{"class":3071,"line":3072},"line",1,[3069,3074,3076],{"class":3075},"su1O8","public",[3069,3078,3079],{"class":3075}," class",[3069,3081,3083],{"class":3082},"sN1BT"," Author",[3069,3085,3087],{"class":3086},"spJ8K","           // ← Principal\n",[3069,3089,3091],{"class":3071,"line":3090},2,[3069,3092,3094],{"class":3093},"sHH4Y","{\n",[3069,3096,3098,3101,3104,3108,3111,3114,3117,3120,3123],{"class":3071,"line":3097},3,[3069,3099,3100],{"class":3075},"    public",[3069,3102,3103],{"class":3075}," int",[3069,3105,3107],{"class":3106},"siwwj"," Id",[3069,3109,3110],{"class":3093}," { ",[3069,3112,3113],{"class":3075},"get",[3069,3115,3116],{"class":3093},"; ",[3069,3118,3119],{"class":3075},"set",[3069,3121,3122],{"class":3093},"; }  ",[3069,3124,3125],{"class":3086},"// PK — на нього посилаються\n",[3069,3127,3129],{"class":3071,"line":3128},4,[3069,3130,3132],{"emptyLinePlaceholder":3131},true,"\n",[3069,3134,3136,3138,3141,3144,3146,3149,3152,3154,3156,3158,3160,3163,3166,3169,3171,3173],{"class":3071,"line":3135},5,[3069,3137,3100],{"class":3075},[3069,3139,3140],{"class":3082}," ICollection",[3069,3142,3143],{"class":3093},"\u003C",[3069,3145,3053],{"class":3082},[3069,3147,3148],{"class":3093},"> ",[3069,3150,3151],{"class":3106},"Books",[3069,3153,3110],{"class":3093},[3069,3155,3113],{"class":3075},[3069,3157,3116],{"class":3093},[3069,3159,3119],{"class":3075},[3069,3161,3162],{"class":3093},"; } = ",[3069,3164,3165],{"class":3075},"new",[3069,3167,3168],{"class":3082}," List",[3069,3170,3143],{"class":3093},[3069,3172,3053],{"class":3082},[3069,3174,3175],{"class":3093},">();\n",[3069,3177,3179],{"class":3071,"line":3178},6,[3069,3180,3181],{"class":3093},"}\n",[3069,3183,3185],{"class":3071,"line":3184},7,[3069,3186,3132],{"emptyLinePlaceholder":3131},[3069,3188,3190,3192,3194,3197],{"class":3071,"line":3189},8,[3069,3191,3076],{"class":3075},[3069,3193,3079],{"class":3075},[3069,3195,3196],{"class":3082}," Book",[3069,3198,3199],{"class":3086},"             // ← Dependent\n",[3069,3201,3203],{"class":3071,"line":3202},9,[3069,3204,3094],{"class":3093},[3069,3206,3208,3210,3212,3214,3216,3218,3220,3222],{"class":3071,"line":3207},10,[3069,3209,3100],{"class":3075},[3069,3211,3103],{"class":3075},[3069,3213,3107],{"class":3106},[3069,3215,3110],{"class":3093},[3069,3217,3113],{"class":3075},[3069,3219,3116],{"class":3093},[3069,3221,3119],{"class":3075},[3069,3223,3224],{"class":3093},"; }\n",[3069,3226,3228],{"class":3071,"line":3227},11,[3069,3229,3132],{"emptyLinePlaceholder":3131},[3069,3231,3233,3235,3237,3240,3242,3244,3246,3248,3251],{"class":3071,"line":3232},12,[3069,3234,3100],{"class":3075},[3069,3236,3103],{"class":3075},[3069,3238,3239],{"class":3106}," AuthorId",[3069,3241,3110],{"class":3093},[3069,3243,3113],{"class":3075},[3069,3245,3116],{"class":3093},[3069,3247,3119],{"class":3075},[3069,3249,3250],{"class":3093},"; }            ",[3069,3252,3253],{"class":3086},"// FK — посилається на Author.Id\n",[3069,3255,3257,3259,3261,3263,3265,3267,3269,3271,3273,3276,3279],{"class":3071,"line":3256},13,[3069,3258,3100],{"class":3075},[3069,3260,3083],{"class":3082},[3069,3262,3083],{"class":3106},[3069,3264,3110],{"class":3093},[3069,3266,3113],{"class":3075},[3069,3268,3116],{"class":3093},[3069,3270,3119],{"class":3075},[3069,3272,3162],{"class":3093},[3069,3274,3275],{"class":3075},"null",[3069,3277,3278],{"class":3093},"!;  ",[3069,3280,3281],{"class":3086},"// Navigation property\n",[3069,3283,3285],{"class":3071,"line":3284},14,[3069,3286,3181],{"class":3093},[2965,3288,3289],{},"Це розрізнення критично для розуміння:",[3291,3292,3293,3299,3305,3311],"ol",{},[2975,3294,3295,3298],{},[2978,3296,3297],{},"Хто має бути збережений першим",": Principal завжди зберігається перед Dependent (EF Core сам визначає порядок у транзакції)",[2975,3300,3301,3304],{},[2978,3302,3303],{},"Де фізично знаходиться зовнішній ключ",": завжди у Dependent",[2975,3306,3307,3310],{},[2978,3308,3309],{},"Що відбувається при видаленні",": видаляти Principal складніше — є залежні дані",[2975,3312,3313,3316],{},[2978,3314,3315],{},"Cascade delete",": налаштовується на стороні Dependent (у FK constraint)",[3010,3318],{},[2960,3320,3322],{"id":3321},"one-to-many-найпоширеніший-звязок","One-to-Many: найпоширеніший зв'язок",[2965,3324,3325],{},"Один автор може написати багато книг. Одна категорія може містити багато продуктів. Один відділ може мати багато співробітників. One-to-Many — це основний зв'язок у більшості доменних моделей.",[3327,3328,3330],"h3",{"id":3329},"як-ef-core-виявляє-one-to-many","Як EF Core виявляє One-to-Many",[2965,3332,3333],{},"EF Core ідентифікує One-to-Many за комбінацією навігаційних властивостей:",[2972,3335,3336,3357,3369],{},[2975,3337,3338,3339,3342,3343,3346,3347,3346,3350,3346,3353,3356],{},"У Principal є ",[2978,3340,3341],{},"колекція"," (",[3033,3344,3345],{},"ICollection\u003CT>",", ",[3033,3348,3349],{},"IList\u003CT>",[3033,3351,3352],{},"List\u003CT>",[3033,3354,3355],{},"IEnumerable\u003CT>",")",[2975,3358,3359,3360,3342,3363,3346,3365,3368],{},"У Dependent є ",[2978,3361,3362],{},"посилання",[3033,3364,3035],{},[3033,3366,3367],{},"Category"," — не колекція)",[2975,3370,3371],{},"Присутній FK-поле або Shadow Property",[2965,3373,3374],{},"Якщо ці умови виконані — EF Core автоматично визначає тип зв'язку без будь-якої конфігурації.",[3327,3376,3378],{"id":3377},"required-one-to-many-fk-not-null","Required One-to-Many (FK NOT NULL)",[2965,3380,3381,3382,3385,3386,3389,3390,3392],{},"Більшість One-to-Many зв'язків є ",[2978,3383,3384],{},"required",": кожна книга ",[2978,3387,3388],{},"обов'язково"," має автора, кожна позиція замовлення ",[2978,3391,3388],{}," є частиною замовлення. FK не може бути NULL.",[3060,3394,3396],{"className":3062,"code":3395,"language":3064,"meta":3065,"style":3065},"public class Order\n{\n    public int Id { get; set; }\n    public DateTime CreatedAt { get; set; }\n\n    // Principal side: колекція дочірніх елементів\n    public ICollection\u003COrderItem> Items { get; set; } = new List\u003COrderItem>();\n}\n\npublic class OrderItem\n{\n    public int Id { get; set; }\n    public int Quantity { get; set; }\n    public decimal UnitPrice { get; set; }\n\n    // FK: NOT NULL (int — не nullable)\n    public int OrderId { get; set; }\n\n    // Navigation property до Principal\n    public Order Order { get; set; } = null!;\n}\n",[3033,3397,3398,3407,3411,3429,3449,3453,3458,3494,3498,3502,3511,3515,3533,3552,3572,3577,3583,3603,3608,3614,3639],{"__ignoreMap":3065},[3069,3399,3400,3402,3404],{"class":3071,"line":3072},[3069,3401,3076],{"class":3075},[3069,3403,3079],{"class":3075},[3069,3405,3406],{"class":3082}," Order\n",[3069,3408,3409],{"class":3071,"line":3090},[3069,3410,3094],{"class":3093},[3069,3412,3413,3415,3417,3419,3421,3423,3425,3427],{"class":3071,"line":3097},[3069,3414,3100],{"class":3075},[3069,3416,3103],{"class":3075},[3069,3418,3107],{"class":3106},[3069,3420,3110],{"class":3093},[3069,3422,3113],{"class":3075},[3069,3424,3116],{"class":3093},[3069,3426,3119],{"class":3075},[3069,3428,3224],{"class":3093},[3069,3430,3431,3433,3436,3439,3441,3443,3445,3447],{"class":3071,"line":3128},[3069,3432,3100],{"class":3075},[3069,3434,3435],{"class":3082}," DateTime",[3069,3437,3438],{"class":3106}," CreatedAt",[3069,3440,3110],{"class":3093},[3069,3442,3113],{"class":3075},[3069,3444,3116],{"class":3093},[3069,3446,3119],{"class":3075},[3069,3448,3224],{"class":3093},[3069,3450,3451],{"class":3071,"line":3135},[3069,3452,3132],{"emptyLinePlaceholder":3131},[3069,3454,3455],{"class":3071,"line":3178},[3069,3456,3457],{"class":3086},"    // Principal side: колекція дочірніх елементів\n",[3069,3459,3460,3462,3464,3466,3469,3471,3474,3476,3478,3480,3482,3484,3486,3488,3490,3492],{"class":3071,"line":3184},[3069,3461,3100],{"class":3075},[3069,3463,3140],{"class":3082},[3069,3465,3143],{"class":3093},[3069,3467,3468],{"class":3082},"OrderItem",[3069,3470,3148],{"class":3093},[3069,3472,3473],{"class":3106},"Items",[3069,3475,3110],{"class":3093},[3069,3477,3113],{"class":3075},[3069,3479,3116],{"class":3093},[3069,3481,3119],{"class":3075},[3069,3483,3162],{"class":3093},[3069,3485,3165],{"class":3075},[3069,3487,3168],{"class":3082},[3069,3489,3143],{"class":3093},[3069,3491,3468],{"class":3082},[3069,3493,3175],{"class":3093},[3069,3495,3496],{"class":3071,"line":3189},[3069,3497,3181],{"class":3093},[3069,3499,3500],{"class":3071,"line":3202},[3069,3501,3132],{"emptyLinePlaceholder":3131},[3069,3503,3504,3506,3508],{"class":3071,"line":3207},[3069,3505,3076],{"class":3075},[3069,3507,3079],{"class":3075},[3069,3509,3510],{"class":3082}," OrderItem\n",[3069,3512,3513],{"class":3071,"line":3227},[3069,3514,3094],{"class":3093},[3069,3516,3517,3519,3521,3523,3525,3527,3529,3531],{"class":3071,"line":3232},[3069,3518,3100],{"class":3075},[3069,3520,3103],{"class":3075},[3069,3522,3107],{"class":3106},[3069,3524,3110],{"class":3093},[3069,3526,3113],{"class":3075},[3069,3528,3116],{"class":3093},[3069,3530,3119],{"class":3075},[3069,3532,3224],{"class":3093},[3069,3534,3535,3537,3539,3542,3544,3546,3548,3550],{"class":3071,"line":3256},[3069,3536,3100],{"class":3075},[3069,3538,3103],{"class":3075},[3069,3540,3541],{"class":3106}," Quantity",[3069,3543,3110],{"class":3093},[3069,3545,3113],{"class":3075},[3069,3547,3116],{"class":3093},[3069,3549,3119],{"class":3075},[3069,3551,3224],{"class":3093},[3069,3553,3554,3556,3559,3562,3564,3566,3568,3570],{"class":3071,"line":3284},[3069,3555,3100],{"class":3075},[3069,3557,3558],{"class":3075}," decimal",[3069,3560,3561],{"class":3106}," UnitPrice",[3069,3563,3110],{"class":3093},[3069,3565,3113],{"class":3075},[3069,3567,3116],{"class":3093},[3069,3569,3119],{"class":3075},[3069,3571,3224],{"class":3093},[3069,3573,3575],{"class":3071,"line":3574},15,[3069,3576,3132],{"emptyLinePlaceholder":3131},[3069,3578,3580],{"class":3071,"line":3579},16,[3069,3581,3582],{"class":3086},"    // FK: NOT NULL (int — не nullable)\n",[3069,3584,3586,3588,3590,3593,3595,3597,3599,3601],{"class":3071,"line":3585},17,[3069,3587,3100],{"class":3075},[3069,3589,3103],{"class":3075},[3069,3591,3592],{"class":3106}," OrderId",[3069,3594,3110],{"class":3093},[3069,3596,3113],{"class":3075},[3069,3598,3116],{"class":3093},[3069,3600,3119],{"class":3075},[3069,3602,3224],{"class":3093},[3069,3604,3606],{"class":3071,"line":3605},18,[3069,3607,3132],{"emptyLinePlaceholder":3131},[3069,3609,3611],{"class":3071,"line":3610},19,[3069,3612,3613],{"class":3086},"    // Navigation property до Principal\n",[3069,3615,3617,3619,3622,3624,3626,3628,3630,3632,3634,3636],{"class":3071,"line":3616},20,[3069,3618,3100],{"class":3075},[3069,3620,3621],{"class":3082}," Order",[3069,3623,3621],{"class":3106},[3069,3625,3110],{"class":3093},[3069,3627,3113],{"class":3075},[3069,3629,3116],{"class":3093},[3069,3631,3119],{"class":3075},[3069,3633,3162],{"class":3093},[3069,3635,3275],{"class":3075},[3069,3637,3638],{"class":3093},"!;\n",[3069,3640,3642],{"class":3071,"line":3641},21,[3069,3643,3181],{"class":3093},[2965,3645,3646],{},"Генерований DDL:",[3060,3648,3652],{"className":3649,"code":3650,"language":3651,"meta":3065,"style":3065},"language-sql shiki shiki-themes light-plus dark-plus dark-plus","CREATE TABLE \"Orders\" (\n    \"Id\" INTEGER NOT NULL CONSTRAINT \"PK_Orders\" PRIMARY KEY AUTOINCREMENT,\n    \"CreatedAt\" TEXT NOT NULL\n);\n\nCREATE TABLE \"OrderItems\" (\n    \"Id\" INTEGER NOT NULL CONSTRAINT \"PK_OrderItems\" PRIMARY KEY AUTOINCREMENT,\n    \"Quantity\" INTEGER NOT NULL,\n    \"UnitPrice\" TEXT NOT NULL,\n    \"OrderId\" INTEGER NOT NULL,  -- NOT NULL: required relationship\n    CONSTRAINT \"FK_OrderItems_Orders_OrderId\"\n        FOREIGN KEY (\"OrderId\") REFERENCES \"Orders\" (\"Id\")\n        ON DELETE CASCADE        -- Cascade: за замовчуванням для required\n);\n","sql",[3033,3653,3654,3672,3696,3707,3712,3716,3729,3746,3758,3769,3784,3792,3819,3827],{"__ignoreMap":3065},[3069,3655,3656,3659,3662,3665,3669],{"class":3071,"line":3072},[3069,3657,3658],{"class":3075},"CREATE",[3069,3660,3661],{"class":3075}," TABLE",[3069,3663,3664],{"class":3093}," \"",[3069,3666,3668],{"class":3667},"s8Opu","Orders",[3069,3670,3671],{"class":3093},"\" (\n",[3069,3673,3674,3678,3681,3684,3687,3690,3693],{"class":3071,"line":3090},[3069,3675,3677],{"class":3676},"sbdoH","    \"Id\"",[3069,3679,3680],{"class":3075}," INTEGER",[3069,3682,3683],{"class":3075}," NOT NULL",[3069,3685,3686],{"class":3075}," CONSTRAINT",[3069,3688,3689],{"class":3676}," \"PK_Orders\"",[3069,3691,3692],{"class":3075}," PRIMARY KEY",[3069,3694,3695],{"class":3093}," AUTOINCREMENT,\n",[3069,3697,3698,3701,3704],{"class":3071,"line":3097},[3069,3699,3700],{"class":3676},"    \"CreatedAt\"",[3069,3702,3703],{"class":3075}," TEXT",[3069,3705,3706],{"class":3075}," NOT NULL\n",[3069,3708,3709],{"class":3071,"line":3128},[3069,3710,3711],{"class":3093},");\n",[3069,3713,3714],{"class":3071,"line":3135},[3069,3715,3132],{"emptyLinePlaceholder":3131},[3069,3717,3718,3720,3722,3724,3727],{"class":3071,"line":3178},[3069,3719,3658],{"class":3075},[3069,3721,3661],{"class":3075},[3069,3723,3664],{"class":3093},[3069,3725,3726],{"class":3667},"OrderItems",[3069,3728,3671],{"class":3093},[3069,3730,3731,3733,3735,3737,3739,3742,3744],{"class":3071,"line":3184},[3069,3732,3677],{"class":3676},[3069,3734,3680],{"class":3075},[3069,3736,3683],{"class":3075},[3069,3738,3686],{"class":3075},[3069,3740,3741],{"class":3676}," \"PK_OrderItems\"",[3069,3743,3692],{"class":3075},[3069,3745,3695],{"class":3093},[3069,3747,3748,3751,3753,3755],{"class":3071,"line":3189},[3069,3749,3750],{"class":3676},"    \"Quantity\"",[3069,3752,3680],{"class":3075},[3069,3754,3683],{"class":3075},[3069,3756,3757],{"class":3093},",\n",[3069,3759,3760,3763,3765,3767],{"class":3071,"line":3202},[3069,3761,3762],{"class":3676},"    \"UnitPrice\"",[3069,3764,3703],{"class":3075},[3069,3766,3683],{"class":3075},[3069,3768,3757],{"class":3093},[3069,3770,3771,3774,3776,3778,3781],{"class":3071,"line":3207},[3069,3772,3773],{"class":3676},"    \"OrderId\"",[3069,3775,3680],{"class":3075},[3069,3777,3683],{"class":3075},[3069,3779,3780],{"class":3093},",  ",[3069,3782,3783],{"class":3086},"-- NOT NULL: required relationship\n",[3069,3785,3786,3789],{"class":3071,"line":3227},[3069,3787,3788],{"class":3075},"    CONSTRAINT",[3069,3790,3791],{"class":3676}," \"FK_OrderItems_Orders_OrderId\"\n",[3069,3793,3794,3797,3799,3802,3805,3808,3811,3813,3816],{"class":3071,"line":3232},[3069,3795,3796],{"class":3075},"        FOREIGN KEY",[3069,3798,3342],{"class":3093},[3069,3800,3801],{"class":3676},"\"OrderId\"",[3069,3803,3804],{"class":3093},") ",[3069,3806,3807],{"class":3075},"REFERENCES",[3069,3809,3810],{"class":3676}," \"Orders\"",[3069,3812,3342],{"class":3093},[3069,3814,3815],{"class":3676},"\"Id\"",[3069,3817,3818],{"class":3093},")\n",[3069,3820,3821,3824],{"class":3071,"line":3256},[3069,3822,3823],{"class":3075},"        ON DELETE CASCADE",[3069,3825,3826],{"class":3086},"        -- Cascade: за замовчуванням для required\n",[3069,3828,3829],{"class":3071,"line":3284},[3069,3830,3711],{"class":3093},[2965,3832,3833,3834,3837,3838,3841,3842,3044],{},"Зверніть на ",[3033,3835,3836],{},"ON DELETE CASCADE",": за замовчуванням EF Core налаштовує каскадне видалення для обов'язкових зв'язків. Видалення ",[3033,3839,3840],{},"Order"," автоматично видалить всі його ",[3033,3843,3726],{},[3327,3845,3847],{"id":3846},"optional-one-to-many-fk-null","Optional One-to-Many (FK NULL)",[2965,3849,3850,3851,3854],{},"Іноді зв'язок необов'язковий: у автора може не бути видавця (",[3033,3852,3853],{},"Publisher","), стаття може не мати категорії. FK може бути NULL.",[3060,3856,3858],{"className":3062,"code":3857,"language":3064,"meta":3065,"style":3065},"public class Article\n{\n    public int Id { get; set; }\n    public string Title { get; set; } = string.Empty;\n\n    // FK nullable: стаття може існувати без категорії\n    public int? CategoryId { get; set; }\n\n    // Nullable navigation property: Optional relationship\n    public Category? Category { get; set; }\n}\n\npublic class Category\n{\n    public int Id { get; set; }\n    public string Name { get; set; } = string.Empty;\n\n    public ICollection\u003CArticle> Articles { get; set; } = new List\u003CArticle>();\n}\n",[3033,3859,3860,3869,3873,3891,3922,3926,3931,3953,3957,3962,3983,3987,3991,4000,4004,4022,4049,4053,4089],{"__ignoreMap":3065},[3069,3861,3862,3864,3866],{"class":3071,"line":3072},[3069,3863,3076],{"class":3075},[3069,3865,3079],{"class":3075},[3069,3867,3868],{"class":3082}," Article\n",[3069,3870,3871],{"class":3071,"line":3090},[3069,3872,3094],{"class":3093},[3069,3874,3875,3877,3879,3881,3883,3885,3887,3889],{"class":3071,"line":3097},[3069,3876,3100],{"class":3075},[3069,3878,3103],{"class":3075},[3069,3880,3107],{"class":3106},[3069,3882,3110],{"class":3093},[3069,3884,3113],{"class":3075},[3069,3886,3116],{"class":3093},[3069,3888,3119],{"class":3075},[3069,3890,3224],{"class":3093},[3069,3892,3893,3895,3898,3901,3903,3905,3907,3909,3911,3914,3916,3919],{"class":3071,"line":3128},[3069,3894,3100],{"class":3075},[3069,3896,3897],{"class":3075}," string",[3069,3899,3900],{"class":3106}," Title",[3069,3902,3110],{"class":3093},[3069,3904,3113],{"class":3075},[3069,3906,3116],{"class":3093},[3069,3908,3119],{"class":3075},[3069,3910,3162],{"class":3093},[3069,3912,3913],{"class":3075},"string",[3069,3915,3044],{"class":3093},[3069,3917,3918],{"class":3106},"Empty",[3069,3920,3921],{"class":3093},";\n",[3069,3923,3924],{"class":3071,"line":3135},[3069,3925,3132],{"emptyLinePlaceholder":3131},[3069,3927,3928],{"class":3071,"line":3178},[3069,3929,3930],{"class":3086},"    // FK nullable: стаття може існувати без категорії\n",[3069,3932,3933,3935,3937,3940,3943,3945,3947,3949,3951],{"class":3071,"line":3184},[3069,3934,3100],{"class":3075},[3069,3936,3103],{"class":3075},[3069,3938,3939],{"class":3093},"? ",[3069,3941,3942],{"class":3106},"CategoryId",[3069,3944,3110],{"class":3093},[3069,3946,3113],{"class":3075},[3069,3948,3116],{"class":3093},[3069,3950,3119],{"class":3075},[3069,3952,3224],{"class":3093},[3069,3954,3955],{"class":3071,"line":3189},[3069,3956,3132],{"emptyLinePlaceholder":3131},[3069,3958,3959],{"class":3071,"line":3202},[3069,3960,3961],{"class":3086},"    // Nullable navigation property: Optional relationship\n",[3069,3963,3964,3966,3969,3971,3973,3975,3977,3979,3981],{"class":3071,"line":3207},[3069,3965,3100],{"class":3075},[3069,3967,3968],{"class":3082}," Category",[3069,3970,3939],{"class":3093},[3069,3972,3367],{"class":3106},[3069,3974,3110],{"class":3093},[3069,3976,3113],{"class":3075},[3069,3978,3116],{"class":3093},[3069,3980,3119],{"class":3075},[3069,3982,3224],{"class":3093},[3069,3984,3985],{"class":3071,"line":3227},[3069,3986,3181],{"class":3093},[3069,3988,3989],{"class":3071,"line":3232},[3069,3990,3132],{"emptyLinePlaceholder":3131},[3069,3992,3993,3995,3997],{"class":3071,"line":3256},[3069,3994,3076],{"class":3075},[3069,3996,3079],{"class":3075},[3069,3998,3999],{"class":3082}," Category\n",[3069,4001,4002],{"class":3071,"line":3284},[3069,4003,3094],{"class":3093},[3069,4005,4006,4008,4010,4012,4014,4016,4018,4020],{"class":3071,"line":3574},[3069,4007,3100],{"class":3075},[3069,4009,3103],{"class":3075},[3069,4011,3107],{"class":3106},[3069,4013,3110],{"class":3093},[3069,4015,3113],{"class":3075},[3069,4017,3116],{"class":3093},[3069,4019,3119],{"class":3075},[3069,4021,3224],{"class":3093},[3069,4023,4024,4026,4028,4031,4033,4035,4037,4039,4041,4043,4045,4047],{"class":3071,"line":3579},[3069,4025,3100],{"class":3075},[3069,4027,3897],{"class":3075},[3069,4029,4030],{"class":3106}," Name",[3069,4032,3110],{"class":3093},[3069,4034,3113],{"class":3075},[3069,4036,3116],{"class":3093},[3069,4038,3119],{"class":3075},[3069,4040,3162],{"class":3093},[3069,4042,3913],{"class":3075},[3069,4044,3044],{"class":3093},[3069,4046,3918],{"class":3106},[3069,4048,3921],{"class":3093},[3069,4050,4051],{"class":3071,"line":3585},[3069,4052,3132],{"emptyLinePlaceholder":3131},[3069,4054,4055,4057,4059,4061,4064,4066,4069,4071,4073,4075,4077,4079,4081,4083,4085,4087],{"class":3071,"line":3605},[3069,4056,3100],{"class":3075},[3069,4058,3140],{"class":3082},[3069,4060,3143],{"class":3093},[3069,4062,4063],{"class":3082},"Article",[3069,4065,3148],{"class":3093},[3069,4067,4068],{"class":3106},"Articles",[3069,4070,3110],{"class":3093},[3069,4072,3113],{"class":3075},[3069,4074,3116],{"class":3093},[3069,4076,3119],{"class":3075},[3069,4078,3162],{"class":3093},[3069,4080,3165],{"class":3075},[3069,4082,3168],{"class":3082},[3069,4084,3143],{"class":3093},[3069,4086,4063],{"class":3082},[3069,4088,3175],{"class":3093},[3069,4090,4091],{"class":3071,"line":3610},[3069,4092,3181],{"class":3093},[3060,4094,4096],{"className":3649,"code":4095,"language":3651,"meta":3065,"style":3065},"CREATE TABLE \"Articles\" (\n    \"Id\" INTEGER NOT NULL PRIMARY KEY AUTOINCREMENT,\n    \"Title\" TEXT NOT NULL,\n    \"CategoryId\" INTEGER NULL,  -- NULL дозволяється: optional\n    CONSTRAINT \"FK_Articles_Categories_CategoryId\"\n        FOREIGN KEY (\"CategoryId\") REFERENCES \"Categories\" (\"Id\")\n        ON DELETE SET NULL  -- або NO ACTION залежно від налаштувань\n);\n",[3033,4097,4098,4110,4122,4133,4148,4155,4177,4190],{"__ignoreMap":3065},[3069,4099,4100,4102,4104,4106,4108],{"class":3071,"line":3072},[3069,4101,3658],{"class":3075},[3069,4103,3661],{"class":3075},[3069,4105,3664],{"class":3093},[3069,4107,4068],{"class":3667},[3069,4109,3671],{"class":3093},[3069,4111,4112,4114,4116,4118,4120],{"class":3071,"line":3090},[3069,4113,3677],{"class":3676},[3069,4115,3680],{"class":3075},[3069,4117,3683],{"class":3075},[3069,4119,3692],{"class":3075},[3069,4121,3695],{"class":3093},[3069,4123,4124,4127,4129,4131],{"class":3071,"line":3097},[3069,4125,4126],{"class":3676},"    \"Title\"",[3069,4128,3703],{"class":3075},[3069,4130,3683],{"class":3075},[3069,4132,3757],{"class":3093},[3069,4134,4135,4138,4140,4143,4145],{"class":3071,"line":3128},[3069,4136,4137],{"class":3676},"    \"CategoryId\"",[3069,4139,3680],{"class":3075},[3069,4141,4142],{"class":3075}," NULL",[3069,4144,3780],{"class":3093},[3069,4146,4147],{"class":3086},"-- NULL дозволяється: optional\n",[3069,4149,4150,4152],{"class":3071,"line":3135},[3069,4151,3788],{"class":3075},[3069,4153,4154],{"class":3676}," \"FK_Articles_Categories_CategoryId\"\n",[3069,4156,4157,4159,4161,4164,4166,4168,4171,4173,4175],{"class":3071,"line":3178},[3069,4158,3796],{"class":3075},[3069,4160,3342],{"class":3093},[3069,4162,4163],{"class":3676},"\"CategoryId\"",[3069,4165,3804],{"class":3093},[3069,4167,3807],{"class":3075},[3069,4169,4170],{"class":3676}," \"Categories\"",[3069,4172,3342],{"class":3093},[3069,4174,3815],{"class":3676},[3069,4176,3818],{"class":3093},[3069,4178,4179,4182,4185,4187],{"class":3071,"line":3184},[3069,4180,4181],{"class":3075},"        ON DELETE",[3069,4183,4184],{"class":3075}," SET",[3069,4186,4142],{"class":3075},[3069,4188,4189],{"class":3086},"  -- або NO ACTION залежно від налаштувань\n",[3069,4191,4192],{"class":3071,"line":3189},[3069,4193,3711],{"class":3093},[2965,4195,4196,4197,4200,4201,4204,4205,4207,4208,4210,4211,4213,4214,4217,4218,4220],{},"Для optional зв'язків DeleteBehavior за замовчуванням — ",[3033,4198,4199],{},"ClientSetNull",", а не ",[3033,4202,4203],{},"CASCADE",". Це означає: при видаленні ",[3033,4206,3367],{}," EF Core обнуляє ",[3033,4209,3942],{}," у завантажених у ChangeTracker ",[3033,4212,4063],{},", але ",[2978,4215,4216],{},"не виконує"," CASCADE на рівні БД. Якщо ",[3033,4219,4063],{}," не завантажені — вони залишаться з недійсним FK або заблокують видалення (залежно від СУБД).",[4222,4223,4224,4225,4228,4229,4231,4232,4235,4236,4239],"tip",{},"Явно завжди задавайте ",[3033,4226,4227],{},"OnDelete()"," для Optional зв'язків. ",[3033,4230,4199],{}," — поведінка, що може призвести до сюрпризів. Для більшості Optional зв'язків кращим вибором є ",[3033,4233,4234],{},"SetNull"," (встановлює NULL в БД) або ",[3033,4237,4238],{},"Restrict"," (забороняє видалення, доки є залежні).",[3327,4241,4243],{"id":4242},"fluent-api-для-one-to-many","Fluent API для One-to-Many",[3060,4245,4248],{"className":3062,"code":4246,"filename":4247,"language":3064,"meta":3065,"style":3065},"public class OrderItemConfiguration : IEntityTypeConfiguration\u003COrderItem>\n{\n    public void Configure(EntityTypeBuilder\u003COrderItem> builder)\n    {\n        // HasOne: OrderItem має ОДНУ Order\n        // WithMany: Order має БАГАТО OrderItems\n        // HasForeignKey: FK знаходиться у OrderItem\n        builder\n            .HasOne(item => item.Order)        // навігація зі сторони Dependent\n            .WithMany(order => order.Items)    // навігація зі сторони Principal\n            .HasForeignKey(item => item.OrderId)\n            .IsRequired()                      // FK NOT NULL\n            .OnDelete(DeleteBehavior.Cascade)  // явно, хоч і є дефолт\n            .HasConstraintName(\"FK_OrderItems_Orders\"); // назва FK constraint у БД\n    }\n}\n","Configurations/OrderItemConfiguration.cs",[3033,4249,4250,4272,4276,4303,4308,4313,4318,4323,4328,4356,4382,4404,4417,4440,4458,4463],{"__ignoreMap":3065},[3069,4251,4252,4254,4256,4259,4262,4265,4267,4269],{"class":3071,"line":3072},[3069,4253,3076],{"class":3075},[3069,4255,3079],{"class":3075},[3069,4257,4258],{"class":3082}," OrderItemConfiguration",[3069,4260,4261],{"class":3093}," : ",[3069,4263,4264],{"class":3082},"IEntityTypeConfiguration",[3069,4266,3143],{"class":3093},[3069,4268,3468],{"class":3082},[3069,4270,4271],{"class":3093},">\n",[3069,4273,4274],{"class":3071,"line":3090},[3069,4275,3094],{"class":3093},[3069,4277,4278,4280,4283,4286,4289,4292,4294,4296,4298,4301],{"class":3071,"line":3097},[3069,4279,3100],{"class":3075},[3069,4281,4282],{"class":3075}," void",[3069,4284,4285],{"class":3667}," Configure",[3069,4287,4288],{"class":3093},"(",[3069,4290,4291],{"class":3082},"EntityTypeBuilder",[3069,4293,3143],{"class":3093},[3069,4295,3468],{"class":3082},[3069,4297,3148],{"class":3093},[3069,4299,4300],{"class":3106},"builder",[3069,4302,3818],{"class":3093},[3069,4304,4305],{"class":3071,"line":3128},[3069,4306,4307],{"class":3093},"    {\n",[3069,4309,4310],{"class":3071,"line":3135},[3069,4311,4312],{"class":3086},"        // HasOne: OrderItem має ОДНУ Order\n",[3069,4314,4315],{"class":3071,"line":3178},[3069,4316,4317],{"class":3086},"        // WithMany: Order має БАГАТО OrderItems\n",[3069,4319,4320],{"class":3071,"line":3184},[3069,4321,4322],{"class":3086},"        // HasForeignKey: FK знаходиться у OrderItem\n",[3069,4324,4325],{"class":3071,"line":3189},[3069,4326,4327],{"class":3106},"        builder\n",[3069,4329,4330,4333,4336,4338,4341,4344,4346,4348,4350,4353],{"class":3071,"line":3202},[3069,4331,4332],{"class":3093},"            .",[3069,4334,4335],{"class":3667},"HasOne",[3069,4337,4288],{"class":3093},[3069,4339,4340],{"class":3106},"item",[3069,4342,4343],{"class":3093}," => ",[3069,4345,4340],{"class":3106},[3069,4347,3044],{"class":3093},[3069,4349,3840],{"class":3106},[3069,4351,4352],{"class":3093},")        ",[3069,4354,4355],{"class":3086},"// навігація зі сторони Dependent\n",[3069,4357,4358,4360,4363,4365,4368,4370,4372,4374,4376,4379],{"class":3071,"line":3207},[3069,4359,4332],{"class":3093},[3069,4361,4362],{"class":3667},"WithMany",[3069,4364,4288],{"class":3093},[3069,4366,4367],{"class":3106},"order",[3069,4369,4343],{"class":3093},[3069,4371,4367],{"class":3106},[3069,4373,3044],{"class":3093},[3069,4375,3473],{"class":3106},[3069,4377,4378],{"class":3093},")    ",[3069,4380,4381],{"class":3086},"// навігація зі сторони Principal\n",[3069,4383,4384,4386,4389,4391,4393,4395,4397,4399,4402],{"class":3071,"line":3227},[3069,4385,4332],{"class":3093},[3069,4387,4388],{"class":3667},"HasForeignKey",[3069,4390,4288],{"class":3093},[3069,4392,4340],{"class":3106},[3069,4394,4343],{"class":3093},[3069,4396,4340],{"class":3106},[3069,4398,3044],{"class":3093},[3069,4400,4401],{"class":3106},"OrderId",[3069,4403,3818],{"class":3093},[3069,4405,4406,4408,4411,4414],{"class":3071,"line":3232},[3069,4407,4332],{"class":3093},[3069,4409,4410],{"class":3667},"IsRequired",[3069,4412,4413],{"class":3093},"()                      ",[3069,4415,4416],{"class":3086},"// FK NOT NULL\n",[3069,4418,4419,4421,4424,4426,4429,4431,4434,4437],{"class":3071,"line":3256},[3069,4420,4332],{"class":3093},[3069,4422,4423],{"class":3667},"OnDelete",[3069,4425,4288],{"class":3093},[3069,4427,4428],{"class":3106},"DeleteBehavior",[3069,4430,3044],{"class":3093},[3069,4432,4433],{"class":3106},"Cascade",[3069,4435,4436],{"class":3093},")  ",[3069,4438,4439],{"class":3086},"// явно, хоч і є дефолт\n",[3069,4441,4442,4444,4447,4449,4452,4455],{"class":3071,"line":3284},[3069,4443,4332],{"class":3093},[3069,4445,4446],{"class":3667},"HasConstraintName",[3069,4448,4288],{"class":3093},[3069,4450,4451],{"class":3676},"\"FK_OrderItems_Orders\"",[3069,4453,4454],{"class":3093},"); ",[3069,4456,4457],{"class":3086},"// назва FK constraint у БД\n",[3069,4459,4460],{"class":3071,"line":3574},[3069,4461,4462],{"class":3093},"    }\n",[3069,4464,4465],{"class":3071,"line":3579},[3069,4466,3181],{"class":3093},[2965,4468,4469],{},"Якщо навігаційна властивість існує тільки з одного боку:",[3060,4471,4473],{"className":3062,"code":4472,"language":3064,"meta":3065,"style":3065},"// Тільки Order → Items (немає Item.Order)\nbuilder\n    .HasMany(order => order.Items)      // починаємо з Principal\n    .WithOne()                          // Dependent без навігації\n    .HasForeignKey(\"OrderId\")           // Shadow property або string-назва\n    .OnDelete(DeleteBehavior.Cascade);\n",[3033,4474,4475,4480,4485,4511,4524,4540],{"__ignoreMap":3065},[3069,4476,4477],{"class":3071,"line":3072},[3069,4478,4479],{"class":3086},"// Тільки Order → Items (немає Item.Order)\n",[3069,4481,4482],{"class":3071,"line":3090},[3069,4483,4484],{"class":3106},"builder\n",[3069,4486,4487,4490,4493,4495,4497,4499,4501,4503,4505,4508],{"class":3071,"line":3097},[3069,4488,4489],{"class":3093},"    .",[3069,4491,4492],{"class":3667},"HasMany",[3069,4494,4288],{"class":3093},[3069,4496,4367],{"class":3106},[3069,4498,4343],{"class":3093},[3069,4500,4367],{"class":3106},[3069,4502,3044],{"class":3093},[3069,4504,3473],{"class":3106},[3069,4506,4507],{"class":3093},")      ",[3069,4509,4510],{"class":3086},"// починаємо з Principal\n",[3069,4512,4513,4515,4518,4521],{"class":3071,"line":3128},[3069,4514,4489],{"class":3093},[3069,4516,4517],{"class":3667},"WithOne",[3069,4519,4520],{"class":3093},"()                          ",[3069,4522,4523],{"class":3086},"// Dependent без навігації\n",[3069,4525,4526,4528,4530,4532,4534,4537],{"class":3071,"line":3135},[3069,4527,4489],{"class":3093},[3069,4529,4388],{"class":3667},[3069,4531,4288],{"class":3093},[3069,4533,3801],{"class":3676},[3069,4535,4536],{"class":3093},")           ",[3069,4538,4539],{"class":3086},"// Shadow property або string-назва\n",[3069,4541,4542,4544,4546,4548,4550,4552,4554],{"class":3071,"line":3178},[3069,4543,4489],{"class":3093},[3069,4545,4423],{"class":3667},[3069,4547,4288],{"class":3093},[3069,4549,4428],{"class":3106},[3069,4551,3044],{"class":3093},[3069,4553,4433],{"class":3106},[3069,4555,3711],{"class":3093},[3010,4557],{},[2960,4559,4561],{"id":4560},"one-to-one-звязок-один-до-одного","One-to-One: зв'язок один до одного",[2965,4563,4564,4565,4568],{},"One-to-One зв'язок складніший, ніж здається. У SQL не існує нативного механізму гарантувати One-to-One на рівні FK — FK constraint дозволяє N рядків з однаковим FK. Унікальність забезпечується через ",[2978,4566,4567],{},"Unique Index"," або через те, що FK є водночас PK.",[2965,4570,4571],{},"EF Core реалізує One-to-One одним із двох способів:",[3327,4573,4575],{"id":4574},"спосіб-1-fk-unique-index-найпоширеніший","Спосіб 1: FK + Unique Index (найпоширеніший)",[2965,4577,4578],{},"Dependent містить FK до Principal, і цей FK має unique index:",[3060,4580,4582],{"className":3062,"code":4581,"language":3064,"meta":3065,"style":3065},"public class Author\n{\n    public int Id { get; set; }\n    public string Name { get; set; } = string.Empty;\n\n    // Навігація до associated ContactInfo\n    public AuthorContactInfo? ContactInfo { get; set; }\n}\n\npublic class AuthorContactInfo\n{\n    public int Id { get; set; }\n    public string? Phone { get; set; }\n    public string? Website { get; set; }\n    public string? TwitterHandle { get; set; }\n\n    // FK до Author — завжди NOT NULL (кожен ContactInfo належить одному Author)\n    public int AuthorId { get; set; }\n    public Author Author { get; set; } = null!;\n}\n",[3033,4583,4584,4593,4597,4615,4641,4645,4650,4672,4676,4680,4689,4693,4711,4732,4753,4774,4778,4783,4801,4823],{"__ignoreMap":3065},[3069,4585,4586,4588,4590],{"class":3071,"line":3072},[3069,4587,3076],{"class":3075},[3069,4589,3079],{"class":3075},[3069,4591,4592],{"class":3082}," Author\n",[3069,4594,4595],{"class":3071,"line":3090},[3069,4596,3094],{"class":3093},[3069,4598,4599,4601,4603,4605,4607,4609,4611,4613],{"class":3071,"line":3097},[3069,4600,3100],{"class":3075},[3069,4602,3103],{"class":3075},[3069,4604,3107],{"class":3106},[3069,4606,3110],{"class":3093},[3069,4608,3113],{"class":3075},[3069,4610,3116],{"class":3093},[3069,4612,3119],{"class":3075},[3069,4614,3224],{"class":3093},[3069,4616,4617,4619,4621,4623,4625,4627,4629,4631,4633,4635,4637,4639],{"class":3071,"line":3128},[3069,4618,3100],{"class":3075},[3069,4620,3897],{"class":3075},[3069,4622,4030],{"class":3106},[3069,4624,3110],{"class":3093},[3069,4626,3113],{"class":3075},[3069,4628,3116],{"class":3093},[3069,4630,3119],{"class":3075},[3069,4632,3162],{"class":3093},[3069,4634,3913],{"class":3075},[3069,4636,3044],{"class":3093},[3069,4638,3918],{"class":3106},[3069,4640,3921],{"class":3093},[3069,4642,4643],{"class":3071,"line":3135},[3069,4644,3132],{"emptyLinePlaceholder":3131},[3069,4646,4647],{"class":3071,"line":3178},[3069,4648,4649],{"class":3086},"    // Навігація до associated ContactInfo\n",[3069,4651,4652,4654,4657,4659,4662,4664,4666,4668,4670],{"class":3071,"line":3184},[3069,4653,3100],{"class":3075},[3069,4655,4656],{"class":3082}," AuthorContactInfo",[3069,4658,3939],{"class":3093},[3069,4660,4661],{"class":3106},"ContactInfo",[3069,4663,3110],{"class":3093},[3069,4665,3113],{"class":3075},[3069,4667,3116],{"class":3093},[3069,4669,3119],{"class":3075},[3069,4671,3224],{"class":3093},[3069,4673,4674],{"class":3071,"line":3189},[3069,4675,3181],{"class":3093},[3069,4677,4678],{"class":3071,"line":3202},[3069,4679,3132],{"emptyLinePlaceholder":3131},[3069,4681,4682,4684,4686],{"class":3071,"line":3207},[3069,4683,3076],{"class":3075},[3069,4685,3079],{"class":3075},[3069,4687,4688],{"class":3082}," AuthorContactInfo\n",[3069,4690,4691],{"class":3071,"line":3227},[3069,4692,3094],{"class":3093},[3069,4694,4695,4697,4699,4701,4703,4705,4707,4709],{"class":3071,"line":3232},[3069,4696,3100],{"class":3075},[3069,4698,3103],{"class":3075},[3069,4700,3107],{"class":3106},[3069,4702,3110],{"class":3093},[3069,4704,3113],{"class":3075},[3069,4706,3116],{"class":3093},[3069,4708,3119],{"class":3075},[3069,4710,3224],{"class":3093},[3069,4712,4713,4715,4717,4719,4722,4724,4726,4728,4730],{"class":3071,"line":3256},[3069,4714,3100],{"class":3075},[3069,4716,3897],{"class":3075},[3069,4718,3939],{"class":3093},[3069,4720,4721],{"class":3106},"Phone",[3069,4723,3110],{"class":3093},[3069,4725,3113],{"class":3075},[3069,4727,3116],{"class":3093},[3069,4729,3119],{"class":3075},[3069,4731,3224],{"class":3093},[3069,4733,4734,4736,4738,4740,4743,4745,4747,4749,4751],{"class":3071,"line":3284},[3069,4735,3100],{"class":3075},[3069,4737,3897],{"class":3075},[3069,4739,3939],{"class":3093},[3069,4741,4742],{"class":3106},"Website",[3069,4744,3110],{"class":3093},[3069,4746,3113],{"class":3075},[3069,4748,3116],{"class":3093},[3069,4750,3119],{"class":3075},[3069,4752,3224],{"class":3093},[3069,4754,4755,4757,4759,4761,4764,4766,4768,4770,4772],{"class":3071,"line":3574},[3069,4756,3100],{"class":3075},[3069,4758,3897],{"class":3075},[3069,4760,3939],{"class":3093},[3069,4762,4763],{"class":3106},"TwitterHandle",[3069,4765,3110],{"class":3093},[3069,4767,3113],{"class":3075},[3069,4769,3116],{"class":3093},[3069,4771,3119],{"class":3075},[3069,4773,3224],{"class":3093},[3069,4775,4776],{"class":3071,"line":3579},[3069,4777,3132],{"emptyLinePlaceholder":3131},[3069,4779,4780],{"class":3071,"line":3585},[3069,4781,4782],{"class":3086},"    // FK до Author — завжди NOT NULL (кожен ContactInfo належить одному Author)\n",[3069,4784,4785,4787,4789,4791,4793,4795,4797,4799],{"class":3071,"line":3605},[3069,4786,3100],{"class":3075},[3069,4788,3103],{"class":3075},[3069,4790,3239],{"class":3106},[3069,4792,3110],{"class":3093},[3069,4794,3113],{"class":3075},[3069,4796,3116],{"class":3093},[3069,4798,3119],{"class":3075},[3069,4800,3224],{"class":3093},[3069,4802,4803,4805,4807,4809,4811,4813,4815,4817,4819,4821],{"class":3071,"line":3610},[3069,4804,3100],{"class":3075},[3069,4806,3083],{"class":3082},[3069,4808,3083],{"class":3106},[3069,4810,3110],{"class":3093},[3069,4812,3113],{"class":3075},[3069,4814,3116],{"class":3093},[3069,4816,3119],{"class":3075},[3069,4818,3162],{"class":3093},[3069,4820,3275],{"class":3075},[3069,4822,3638],{"class":3093},[3069,4824,4825],{"class":3071,"line":3616},[3069,4826,3181],{"class":3093},[2965,4828,4829,4830,4833],{},"EF Core автоматично визначає One-to-One (а не One-to-Many), бо навігаційна властивість ",[3033,4831,4832],{},"Author.ContactInfo"," є одиночним об'єктом, а не колекцією.",[2965,4835,4836],{},"Генерований DDL для SQLite:",[3060,4838,4840],{"className":3649,"code":4839,"language":3651,"meta":3065,"style":3065},"CREATE TABLE \"Authors\" (\n    \"Id\" INTEGER NOT NULL PRIMARY KEY AUTOINCREMENT,\n    \"Name\" TEXT NOT NULL\n);\n\nCREATE TABLE \"AuthorContactInfos\" (\n    \"Id\" INTEGER NOT NULL PRIMARY KEY AUTOINCREMENT,\n    \"Phone\" TEXT NULL,\n    \"Website\" TEXT NULL,\n    \"TwitterHandle\" TEXT NULL,\n    \"AuthorId\" INTEGER NOT NULL,\n    CONSTRAINT \"FK_AuthorContactInfos_Authors_AuthorId\"\n        FOREIGN KEY (\"AuthorId\") REFERENCES \"Authors\" (\"Id\")\n        ON DELETE CASCADE\n);\n\n-- Unique index: гарантує One-to-One (один Author → один ContactInfo)\nCREATE UNIQUE INDEX \"IX_AuthorContactInfos_AuthorId\"\n    ON \"AuthorContactInfos\" (\"AuthorId\");\n",[3033,4841,4842,4855,4867,4876,4880,4884,4897,4909,4920,4931,4942,4953,4960,4982,4987,4991,4995,5000,5015],{"__ignoreMap":3065},[3069,4843,4844,4846,4848,4850,4853],{"class":3071,"line":3072},[3069,4845,3658],{"class":3075},[3069,4847,3661],{"class":3075},[3069,4849,3664],{"class":3093},[3069,4851,4852],{"class":3667},"Authors",[3069,4854,3671],{"class":3093},[3069,4856,4857,4859,4861,4863,4865],{"class":3071,"line":3090},[3069,4858,3677],{"class":3676},[3069,4860,3680],{"class":3075},[3069,4862,3683],{"class":3075},[3069,4864,3692],{"class":3075},[3069,4866,3695],{"class":3093},[3069,4868,4869,4872,4874],{"class":3071,"line":3097},[3069,4870,4871],{"class":3676},"    \"Name\"",[3069,4873,3703],{"class":3075},[3069,4875,3706],{"class":3075},[3069,4877,4878],{"class":3071,"line":3128},[3069,4879,3711],{"class":3093},[3069,4881,4882],{"class":3071,"line":3135},[3069,4883,3132],{"emptyLinePlaceholder":3131},[3069,4885,4886,4888,4890,4892,4895],{"class":3071,"line":3178},[3069,4887,3658],{"class":3075},[3069,4889,3661],{"class":3075},[3069,4891,3664],{"class":3093},[3069,4893,4894],{"class":3667},"AuthorContactInfos",[3069,4896,3671],{"class":3093},[3069,4898,4899,4901,4903,4905,4907],{"class":3071,"line":3184},[3069,4900,3677],{"class":3676},[3069,4902,3680],{"class":3075},[3069,4904,3683],{"class":3075},[3069,4906,3692],{"class":3075},[3069,4908,3695],{"class":3093},[3069,4910,4911,4914,4916,4918],{"class":3071,"line":3189},[3069,4912,4913],{"class":3676},"    \"Phone\"",[3069,4915,3703],{"class":3075},[3069,4917,4142],{"class":3075},[3069,4919,3757],{"class":3093},[3069,4921,4922,4925,4927,4929],{"class":3071,"line":3202},[3069,4923,4924],{"class":3676},"    \"Website\"",[3069,4926,3703],{"class":3075},[3069,4928,4142],{"class":3075},[3069,4930,3757],{"class":3093},[3069,4932,4933,4936,4938,4940],{"class":3071,"line":3207},[3069,4934,4935],{"class":3676},"    \"TwitterHandle\"",[3069,4937,3703],{"class":3075},[3069,4939,4142],{"class":3075},[3069,4941,3757],{"class":3093},[3069,4943,4944,4947,4949,4951],{"class":3071,"line":3227},[3069,4945,4946],{"class":3676},"    \"AuthorId\"",[3069,4948,3680],{"class":3075},[3069,4950,3683],{"class":3075},[3069,4952,3757],{"class":3093},[3069,4954,4955,4957],{"class":3071,"line":3232},[3069,4956,3788],{"class":3075},[3069,4958,4959],{"class":3676}," \"FK_AuthorContactInfos_Authors_AuthorId\"\n",[3069,4961,4962,4964,4966,4969,4971,4973,4976,4978,4980],{"class":3071,"line":3256},[3069,4963,3796],{"class":3075},[3069,4965,3342],{"class":3093},[3069,4967,4968],{"class":3676},"\"AuthorId\"",[3069,4970,3804],{"class":3093},[3069,4972,3807],{"class":3075},[3069,4974,4975],{"class":3676}," \"Authors\"",[3069,4977,3342],{"class":3093},[3069,4979,3815],{"class":3676},[3069,4981,3818],{"class":3093},[3069,4983,4984],{"class":3071,"line":3284},[3069,4985,4986],{"class":3075},"        ON DELETE CASCADE\n",[3069,4988,4989],{"class":3071,"line":3574},[3069,4990,3711],{"class":3093},[3069,4992,4993],{"class":3071,"line":3579},[3069,4994,3132],{"emptyLinePlaceholder":3131},[3069,4996,4997],{"class":3071,"line":3585},[3069,4998,4999],{"class":3086},"-- Unique index: гарантує One-to-One (один Author → один ContactInfo)\n",[3069,5001,5002,5004,5007,5009,5012],{"class":3071,"line":3605},[3069,5003,3658],{"class":3075},[3069,5005,5006],{"class":3075}," UNIQUE INDEX",[3069,5008,3664],{"class":3093},[3069,5010,5011],{"class":3667},"IX_AuthorContactInfos_AuthorId",[3069,5013,5014],{"class":3093},"\"\n",[3069,5016,5017,5020,5023,5025,5027],{"class":3071,"line":3610},[3069,5018,5019],{"class":3075},"    ON",[3069,5021,5022],{"class":3676}," \"AuthorContactInfos\"",[3069,5024,3342],{"class":3093},[3069,5026,4968],{"class":3676},[3069,5028,3711],{"class":3093},[3327,5030,5032],{"id":5031},"спосіб-2-shared-primary-key-fk-pk","Спосіб 2: Shared Primary Key (FK = PK)",[2965,5034,5035],{},"Більш рідкісний, але елегантний: Dependent використовує той самий Id, що і Principal. Це гарантує 1:1 на рівні фізичного ключа:",[3060,5037,5039],{"className":3062,"code":5038,"language":3064,"meta":3065,"style":3065},"public class Employee\n{\n    public int Id { get; set; }\n    public string Name { get; set; } = string.Empty;\n\n    public EmployeeProfile? Profile { get; set; }\n}\n\npublic class EmployeeProfile\n{\n    // PK і FK одночасно — цей Id є і PK, і FK до Employee\n    public int Id { get; set; }\n    public string? Bio { get; set; }\n    public string? LinkedInUrl { get; set; }\n\n    public Employee Employee { get; set; } = null!;\n}\n",[3033,5040,5041,5050,5054,5072,5098,5102,5124,5128,5132,5141,5145,5150,5168,5189,5210,5214,5237],{"__ignoreMap":3065},[3069,5042,5043,5045,5047],{"class":3071,"line":3072},[3069,5044,3076],{"class":3075},[3069,5046,3079],{"class":3075},[3069,5048,5049],{"class":3082}," Employee\n",[3069,5051,5052],{"class":3071,"line":3090},[3069,5053,3094],{"class":3093},[3069,5055,5056,5058,5060,5062,5064,5066,5068,5070],{"class":3071,"line":3097},[3069,5057,3100],{"class":3075},[3069,5059,3103],{"class":3075},[3069,5061,3107],{"class":3106},[3069,5063,3110],{"class":3093},[3069,5065,3113],{"class":3075},[3069,5067,3116],{"class":3093},[3069,5069,3119],{"class":3075},[3069,5071,3224],{"class":3093},[3069,5073,5074,5076,5078,5080,5082,5084,5086,5088,5090,5092,5094,5096],{"class":3071,"line":3128},[3069,5075,3100],{"class":3075},[3069,5077,3897],{"class":3075},[3069,5079,4030],{"class":3106},[3069,5081,3110],{"class":3093},[3069,5083,3113],{"class":3075},[3069,5085,3116],{"class":3093},[3069,5087,3119],{"class":3075},[3069,5089,3162],{"class":3093},[3069,5091,3913],{"class":3075},[3069,5093,3044],{"class":3093},[3069,5095,3918],{"class":3106},[3069,5097,3921],{"class":3093},[3069,5099,5100],{"class":3071,"line":3135},[3069,5101,3132],{"emptyLinePlaceholder":3131},[3069,5103,5104,5106,5109,5111,5114,5116,5118,5120,5122],{"class":3071,"line":3178},[3069,5105,3100],{"class":3075},[3069,5107,5108],{"class":3082}," EmployeeProfile",[3069,5110,3939],{"class":3093},[3069,5112,5113],{"class":3106},"Profile",[3069,5115,3110],{"class":3093},[3069,5117,3113],{"class":3075},[3069,5119,3116],{"class":3093},[3069,5121,3119],{"class":3075},[3069,5123,3224],{"class":3093},[3069,5125,5126],{"class":3071,"line":3184},[3069,5127,3181],{"class":3093},[3069,5129,5130],{"class":3071,"line":3189},[3069,5131,3132],{"emptyLinePlaceholder":3131},[3069,5133,5134,5136,5138],{"class":3071,"line":3202},[3069,5135,3076],{"class":3075},[3069,5137,3079],{"class":3075},[3069,5139,5140],{"class":3082}," EmployeeProfile\n",[3069,5142,5143],{"class":3071,"line":3207},[3069,5144,3094],{"class":3093},[3069,5146,5147],{"class":3071,"line":3227},[3069,5148,5149],{"class":3086},"    // PK і FK одночасно — цей Id є і PK, і FK до Employee\n",[3069,5151,5152,5154,5156,5158,5160,5162,5164,5166],{"class":3071,"line":3232},[3069,5153,3100],{"class":3075},[3069,5155,3103],{"class":3075},[3069,5157,3107],{"class":3106},[3069,5159,3110],{"class":3093},[3069,5161,3113],{"class":3075},[3069,5163,3116],{"class":3093},[3069,5165,3119],{"class":3075},[3069,5167,3224],{"class":3093},[3069,5169,5170,5172,5174,5176,5179,5181,5183,5185,5187],{"class":3071,"line":3256},[3069,5171,3100],{"class":3075},[3069,5173,3897],{"class":3075},[3069,5175,3939],{"class":3093},[3069,5177,5178],{"class":3106},"Bio",[3069,5180,3110],{"class":3093},[3069,5182,3113],{"class":3075},[3069,5184,3116],{"class":3093},[3069,5186,3119],{"class":3075},[3069,5188,3224],{"class":3093},[3069,5190,5191,5193,5195,5197,5200,5202,5204,5206,5208],{"class":3071,"line":3284},[3069,5192,3100],{"class":3075},[3069,5194,3897],{"class":3075},[3069,5196,3939],{"class":3093},[3069,5198,5199],{"class":3106},"LinkedInUrl",[3069,5201,3110],{"class":3093},[3069,5203,3113],{"class":3075},[3069,5205,3116],{"class":3093},[3069,5207,3119],{"class":3075},[3069,5209,3224],{"class":3093},[3069,5211,5212],{"class":3071,"line":3574},[3069,5213,3132],{"emptyLinePlaceholder":3131},[3069,5215,5216,5218,5221,5223,5225,5227,5229,5231,5233,5235],{"class":3071,"line":3579},[3069,5217,3100],{"class":3075},[3069,5219,5220],{"class":3082}," Employee",[3069,5222,5220],{"class":3106},[3069,5224,3110],{"class":3093},[3069,5226,3113],{"class":3075},[3069,5228,3116],{"class":3093},[3069,5230,3119],{"class":3075},[3069,5232,3162],{"class":3093},[3069,5234,3275],{"class":3075},[3069,5236,3638],{"class":3093},[3069,5238,5239],{"class":3071,"line":3585},[3069,5240,3181],{"class":3093},[2965,5242,5243],{},"Fluent API для Shared Primary Key:",[3060,5245,5247],{"className":3062,"code":5246,"language":3064,"meta":3065,"style":3065},"modelBuilder.Entity\u003CEmployee>()\n    .HasOne(e => e.Profile)\n    .WithOne(p => p.Employee)\n    .HasForeignKey\u003CEmployeeProfile>(p => p.Id); // FK = PK у Dependent\n",[3033,5248,5249,5267,5288,5308],{"__ignoreMap":3065},[3069,5250,5251,5254,5256,5259,5261,5264],{"class":3071,"line":3072},[3069,5252,5253],{"class":3106},"modelBuilder",[3069,5255,3044],{"class":3093},[3069,5257,5258],{"class":3667},"Entity",[3069,5260,3143],{"class":3093},[3069,5262,5263],{"class":3082},"Employee",[3069,5265,5266],{"class":3093},">()\n",[3069,5268,5269,5271,5273,5275,5278,5280,5282,5284,5286],{"class":3071,"line":3090},[3069,5270,4489],{"class":3093},[3069,5272,4335],{"class":3667},[3069,5274,4288],{"class":3093},[3069,5276,5277],{"class":3106},"e",[3069,5279,4343],{"class":3093},[3069,5281,5277],{"class":3106},[3069,5283,3044],{"class":3093},[3069,5285,5113],{"class":3106},[3069,5287,3818],{"class":3093},[3069,5289,5290,5292,5294,5296,5298,5300,5302,5304,5306],{"class":3071,"line":3097},[3069,5291,4489],{"class":3093},[3069,5293,4517],{"class":3667},[3069,5295,4288],{"class":3093},[3069,5297,2965],{"class":3106},[3069,5299,4343],{"class":3093},[3069,5301,2965],{"class":3106},[3069,5303,3044],{"class":3093},[3069,5305,5263],{"class":3106},[3069,5307,3818],{"class":3093},[3069,5309,5310,5312,5314,5316,5319,5322,5324,5326,5328,5330,5333,5335],{"class":3071,"line":3128},[3069,5311,4489],{"class":3093},[3069,5313,4388],{"class":3667},[3069,5315,3143],{"class":3093},[3069,5317,5318],{"class":3082},"EmployeeProfile",[3069,5320,5321],{"class":3093},">(",[3069,5323,2965],{"class":3106},[3069,5325,4343],{"class":3093},[3069,5327,2965],{"class":3106},[3069,5329,3044],{"class":3093},[3069,5331,5332],{"class":3106},"Id",[3069,5334,4454],{"class":3093},[3069,5336,5337],{"class":3086},"// FK = PK у Dependent\n",[3060,5339,5341],{"className":3649,"code":5340,"language":3651,"meta":3065,"style":3065},"CREATE TABLE \"EmployeeProfiles\" (\n    \"Id\" INTEGER NOT NULL,  -- PK і FK одночасно\n    \"Bio\" TEXT NULL,\n    CONSTRAINT \"PK_EmployeeProfiles\" PRIMARY KEY (\"Id\"),\n    CONSTRAINT \"FK_EmployeeProfiles_Employees_Id\"\n        FOREIGN KEY (\"Id\") REFERENCES \"Employees\" (\"Id\")\n        ON DELETE CASCADE\n);\n-- Немає separate unique index — PK вже унікальний\n",[3033,5342,5343,5356,5369,5380,5396,5403,5424,5428,5432],{"__ignoreMap":3065},[3069,5344,5345,5347,5349,5351,5354],{"class":3071,"line":3072},[3069,5346,3658],{"class":3075},[3069,5348,3661],{"class":3075},[3069,5350,3664],{"class":3093},[3069,5352,5353],{"class":3667},"EmployeeProfiles",[3069,5355,3671],{"class":3093},[3069,5357,5358,5360,5362,5364,5366],{"class":3071,"line":3090},[3069,5359,3677],{"class":3676},[3069,5361,3680],{"class":3075},[3069,5363,3683],{"class":3075},[3069,5365,3780],{"class":3093},[3069,5367,5368],{"class":3086},"-- PK і FK одночасно\n",[3069,5370,5371,5374,5376,5378],{"class":3071,"line":3097},[3069,5372,5373],{"class":3676},"    \"Bio\"",[3069,5375,3703],{"class":3075},[3069,5377,4142],{"class":3075},[3069,5379,3757],{"class":3093},[3069,5381,5382,5384,5387,5389,5391,5393],{"class":3071,"line":3128},[3069,5383,3788],{"class":3075},[3069,5385,5386],{"class":3676}," \"PK_EmployeeProfiles\"",[3069,5388,3692],{"class":3075},[3069,5390,3342],{"class":3093},[3069,5392,3815],{"class":3676},[3069,5394,5395],{"class":3093},"),\n",[3069,5397,5398,5400],{"class":3071,"line":3135},[3069,5399,3788],{"class":3075},[3069,5401,5402],{"class":3676}," \"FK_EmployeeProfiles_Employees_Id\"\n",[3069,5404,5405,5407,5409,5411,5413,5415,5418,5420,5422],{"class":3071,"line":3178},[3069,5406,3796],{"class":3075},[3069,5408,3342],{"class":3093},[3069,5410,3815],{"class":3676},[3069,5412,3804],{"class":3093},[3069,5414,3807],{"class":3075},[3069,5416,5417],{"class":3676}," \"Employees\"",[3069,5419,3342],{"class":3093},[3069,5421,3815],{"class":3676},[3069,5423,3818],{"class":3093},[3069,5425,5426],{"class":3071,"line":3184},[3069,5427,4986],{"class":3075},[3069,5429,5430],{"class":3071,"line":3189},[3069,5431,3711],{"class":3093},[3069,5433,5434],{"class":3071,"line":3202},[3069,5435,5436],{"class":3086},"-- Немає separate unique index — PK вже унікальний\n",[3327,5438,5440],{"id":5439},"fluent-api-для-one-to-one","Fluent API для One-to-One",[2965,5442,5443,5444,5447],{},"Особливість: EF Core ",[2978,5445,5446],{},"не може"," автоматично визначити, хто є Principal, а хто Dependent у One-to-One — обидві сторони мають навігацію без колекції. Тому Fluent API є обов'язковим або принаймні рекомендованим:",[3060,5449,5452],{"className":3062,"code":5450,"filename":5451,"language":3064,"meta":3065,"style":3065},"public class AuthorContactInfoConfiguration : IEntityTypeConfiguration\u003CAuthorContactInfo>\n{\n    public void Configure(EntityTypeBuilder\u003CAuthorContactInfo> builder)\n    {\n        // HasOne: ContactInfo має одного Author\n        // WithOne: Author має один ContactInfo\n        // HasForeignKey\u003CAuthorContactInfo>: FK знаходиться у ContactInfo (Dependent)\n        builder\n            .HasOne(ci => ci.Author)\n            .WithOne(a => a.ContactInfo)\n            .HasForeignKey\u003CAuthorContactInfo>(ci => ci.AuthorId) // явно вказуємо Dependent\n            .IsRequired()\n            .OnDelete(DeleteBehavior.Cascade);\n    }\n}\n","Configurations/AuthorContactInfoConfiguration.cs",[3033,5453,5454,5474,5478,5500,5504,5509,5514,5519,5523,5544,5565,5592,5601,5617,5621],{"__ignoreMap":3065},[3069,5455,5456,5458,5460,5463,5465,5467,5469,5472],{"class":3071,"line":3072},[3069,5457,3076],{"class":3075},[3069,5459,3079],{"class":3075},[3069,5461,5462],{"class":3082}," AuthorContactInfoConfiguration",[3069,5464,4261],{"class":3093},[3069,5466,4264],{"class":3082},[3069,5468,3143],{"class":3093},[3069,5470,5471],{"class":3082},"AuthorContactInfo",[3069,5473,4271],{"class":3093},[3069,5475,5476],{"class":3071,"line":3090},[3069,5477,3094],{"class":3093},[3069,5479,5480,5482,5484,5486,5488,5490,5492,5494,5496,5498],{"class":3071,"line":3097},[3069,5481,3100],{"class":3075},[3069,5483,4282],{"class":3075},[3069,5485,4285],{"class":3667},[3069,5487,4288],{"class":3093},[3069,5489,4291],{"class":3082},[3069,5491,3143],{"class":3093},[3069,5493,5471],{"class":3082},[3069,5495,3148],{"class":3093},[3069,5497,4300],{"class":3106},[3069,5499,3818],{"class":3093},[3069,5501,5502],{"class":3071,"line":3128},[3069,5503,4307],{"class":3093},[3069,5505,5506],{"class":3071,"line":3135},[3069,5507,5508],{"class":3086},"        // HasOne: ContactInfo має одного Author\n",[3069,5510,5511],{"class":3071,"line":3178},[3069,5512,5513],{"class":3086},"        // WithOne: Author має один ContactInfo\n",[3069,5515,5516],{"class":3071,"line":3184},[3069,5517,5518],{"class":3086},"        // HasForeignKey\u003CAuthorContactInfo>: FK знаходиться у ContactInfo (Dependent)\n",[3069,5520,5521],{"class":3071,"line":3189},[3069,5522,4327],{"class":3106},[3069,5524,5525,5527,5529,5531,5534,5536,5538,5540,5542],{"class":3071,"line":3202},[3069,5526,4332],{"class":3093},[3069,5528,4335],{"class":3667},[3069,5530,4288],{"class":3093},[3069,5532,5533],{"class":3106},"ci",[3069,5535,4343],{"class":3093},[3069,5537,5533],{"class":3106},[3069,5539,3044],{"class":3093},[3069,5541,3035],{"class":3106},[3069,5543,3818],{"class":3093},[3069,5545,5546,5548,5550,5552,5555,5557,5559,5561,5563],{"class":3071,"line":3207},[3069,5547,4332],{"class":3093},[3069,5549,4517],{"class":3667},[3069,5551,4288],{"class":3093},[3069,5553,5554],{"class":3106},"a",[3069,5556,4343],{"class":3093},[3069,5558,5554],{"class":3106},[3069,5560,3044],{"class":3093},[3069,5562,4661],{"class":3106},[3069,5564,3818],{"class":3093},[3069,5566,5567,5569,5571,5573,5575,5577,5579,5581,5583,5585,5587,5589],{"class":3071,"line":3227},[3069,5568,4332],{"class":3093},[3069,5570,4388],{"class":3667},[3069,5572,3143],{"class":3093},[3069,5574,5471],{"class":3082},[3069,5576,5321],{"class":3093},[3069,5578,5533],{"class":3106},[3069,5580,4343],{"class":3093},[3069,5582,5533],{"class":3106},[3069,5584,3044],{"class":3093},[3069,5586,3057],{"class":3106},[3069,5588,3804],{"class":3093},[3069,5590,5591],{"class":3086},"// явно вказуємо Dependent\n",[3069,5593,5594,5596,5598],{"class":3071,"line":3232},[3069,5595,4332],{"class":3093},[3069,5597,4410],{"class":3667},[3069,5599,5600],{"class":3093},"()\n",[3069,5602,5603,5605,5607,5609,5611,5613,5615],{"class":3071,"line":3256},[3069,5604,4332],{"class":3093},[3069,5606,4423],{"class":3667},[3069,5608,4288],{"class":3093},[3069,5610,4428],{"class":3106},[3069,5612,3044],{"class":3093},[3069,5614,4433],{"class":3106},[3069,5616,3711],{"class":3093},[3069,5618,5619],{"class":3071,"line":3284},[3069,5620,4462],{"class":3093},[3069,5622,5623],{"class":3071,"line":3574},[3069,5624,3181],{"class":3093},[5626,5627,5628,5629,5631,5632,5635],"warning",{},"При конфігурації One-to-One через Fluent API ",[2978,5630,3388],{}," вказуйте ",[3033,5633,5634],{},"HasForeignKey\u003CTDependent>()"," з явним generic-параметром, що вказує на Dependent. Без цього EF Core може переплутати Principal і Dependent, і FK буде у неправильній таблиці.",[3010,5637],{},[2960,5639,5641],{"id":5640},"навігаційні-властивості-типи-і-вибір","Навігаційні властивості: типи і вибір",[2965,5643,5644],{},"Навігаційні властивості є «мостом» між об'єктною моделлю і реляційними зв'язками. Вони дозволяють переходити між сутностями через C#-властивості замість явних SQL JOIN.",[3327,5646,5648],{"id":5647},"reference-navigation-єдиний-обєкт","Reference Navigation (єдиний об'єкт)",[2965,5650,5651],{},"Використовується для Many-to-One або One-to-One зі сторони Dependent:",[3060,5653,5655],{"className":3062,"code":5654,"language":3064,"meta":3065,"style":3065},"public Book\n{\n    // Reference navigation: одна сутність\n    public Author Author { get; set; } = null!;           // Required (Non-null)\n    public Publisher? Publisher { get; set; }             // Optional (Nullable)\n}\n",[3033,5656,5657,5664,5668,5673,5699,5724],{"__ignoreMap":3065},[3069,5658,5659,5661],{"class":3071,"line":3072},[3069,5660,3076],{"class":3075},[3069,5662,5663],{"class":3106}," Book\n",[3069,5665,5666],{"class":3071,"line":3090},[3069,5667,3094],{"class":3093},[3069,5669,5670],{"class":3071,"line":3097},[3069,5671,5672],{"class":3086},"    // Reference navigation: одна сутність\n",[3069,5674,5675,5677,5679,5681,5683,5685,5687,5689,5691,5693,5696],{"class":3071,"line":3128},[3069,5676,3100],{"class":3106},[3069,5678,3083],{"class":3106},[3069,5680,3083],{"class":3106},[3069,5682,3110],{"class":3093},[3069,5684,3113],{"class":3106},[3069,5686,3116],{"class":3093},[3069,5688,3119],{"class":3106},[3069,5690,3162],{"class":3093},[3069,5692,3275],{"class":3075},[3069,5694,5695],{"class":3093},"!;           ",[3069,5697,5698],{"class":3086},"// Required (Non-null)\n",[3069,5700,5701,5703,5706,5708,5710,5712,5714,5716,5718,5721],{"class":3071,"line":3135},[3069,5702,3100],{"class":3106},[3069,5704,5705],{"class":3106}," Publisher",[3069,5707,3939],{"class":3093},[3069,5709,3853],{"class":3106},[3069,5711,3110],{"class":3093},[3069,5713,3113],{"class":3106},[3069,5715,3116],{"class":3093},[3069,5717,3119],{"class":3106},[3069,5719,5720],{"class":3093},"; }             ",[3069,5722,5723],{"class":3086},"// Optional (Nullable)\n",[3069,5725,5726],{"class":3071,"line":3178},[3069,5727,3181],{"class":3093},[3327,5729,5731],{"id":5730},"collection-navigation-колекція","Collection Navigation (колекція)",[2965,5733,5734],{},"Використовується для One-to-Many зі сторони Principal:",[3060,5736,5738],{"className":3062,"code":5737,"language":3064,"meta":3065,"style":3065},"public class Author\n{\n    public ICollection\u003CBook> Books { get; set; } = new List\u003CBook>();    // найпоширеніший вибір\n    public IList\u003CBook> OrderedBooks { get; set; } = new List\u003CBook>();   // коли потрібен порядок\n    public IReadOnlyCollection\u003CBook> ImmutableBooks => _books.AsReadOnly(); // read-only exposure\n    private List\u003CBook> _books = new List\u003CBook>();                         // backing field (DDD)\n}\n",[3033,5739,5740,5748,5752,5790,5830,5862,5894],{"__ignoreMap":3065},[3069,5741,5742,5744,5746],{"class":3071,"line":3072},[3069,5743,3076],{"class":3075},[3069,5745,3079],{"class":3075},[3069,5747,4592],{"class":3082},[3069,5749,5750],{"class":3071,"line":3090},[3069,5751,3094],{"class":3093},[3069,5753,5754,5756,5758,5760,5762,5764,5766,5768,5770,5772,5774,5776,5778,5780,5782,5784,5787],{"class":3071,"line":3097},[3069,5755,3100],{"class":3075},[3069,5757,3140],{"class":3082},[3069,5759,3143],{"class":3093},[3069,5761,3053],{"class":3082},[3069,5763,3148],{"class":3093},[3069,5765,3151],{"class":3106},[3069,5767,3110],{"class":3093},[3069,5769,3113],{"class":3075},[3069,5771,3116],{"class":3093},[3069,5773,3119],{"class":3075},[3069,5775,3162],{"class":3093},[3069,5777,3165],{"class":3075},[3069,5779,3168],{"class":3082},[3069,5781,3143],{"class":3093},[3069,5783,3053],{"class":3082},[3069,5785,5786],{"class":3093},">();    ",[3069,5788,5789],{"class":3086},"// найпоширеніший вибір\n",[3069,5791,5792,5794,5797,5799,5801,5803,5806,5808,5810,5812,5814,5816,5818,5820,5822,5824,5827],{"class":3071,"line":3128},[3069,5793,3100],{"class":3075},[3069,5795,5796],{"class":3082}," IList",[3069,5798,3143],{"class":3093},[3069,5800,3053],{"class":3082},[3069,5802,3148],{"class":3093},[3069,5804,5805],{"class":3106},"OrderedBooks",[3069,5807,3110],{"class":3093},[3069,5809,3113],{"class":3075},[3069,5811,3116],{"class":3093},[3069,5813,3119],{"class":3075},[3069,5815,3162],{"class":3093},[3069,5817,3165],{"class":3075},[3069,5819,3168],{"class":3082},[3069,5821,3143],{"class":3093},[3069,5823,3053],{"class":3082},[3069,5825,5826],{"class":3093},">();   ",[3069,5828,5829],{"class":3086},"// коли потрібен порядок\n",[3069,5831,5832,5834,5837,5839,5841,5843,5846,5848,5851,5853,5856,5859],{"class":3071,"line":3135},[3069,5833,3100],{"class":3075},[3069,5835,5836],{"class":3082}," IReadOnlyCollection",[3069,5838,3143],{"class":3093},[3069,5840,3053],{"class":3082},[3069,5842,3148],{"class":3093},[3069,5844,5845],{"class":3106},"ImmutableBooks",[3069,5847,4343],{"class":3093},[3069,5849,5850],{"class":3106},"_books",[3069,5852,3044],{"class":3093},[3069,5854,5855],{"class":3667},"AsReadOnly",[3069,5857,5858],{"class":3093},"(); ",[3069,5860,5861],{"class":3086},"// read-only exposure\n",[3069,5863,5864,5867,5869,5871,5873,5875,5877,5880,5882,5884,5886,5888,5891],{"class":3071,"line":3178},[3069,5865,5866],{"class":3075},"    private",[3069,5868,3168],{"class":3082},[3069,5870,3143],{"class":3093},[3069,5872,3053],{"class":3082},[3069,5874,3148],{"class":3093},[3069,5876,5850],{"class":3106},[3069,5878,5879],{"class":3093}," = ",[3069,5881,3165],{"class":3075},[3069,5883,3168],{"class":3082},[3069,5885,3143],{"class":3093},[3069,5887,3053],{"class":3082},[3069,5889,5890],{"class":3093},">();                         ",[3069,5892,5893],{"class":3086},"// backing field (DDD)\n",[3069,5895,5896],{"class":3071,"line":3184},[3069,5897,3181],{"class":3093},[2965,5899,5900],{},"Рекомендації щодо типу колекції:",[2965,5902,5903,5907,5908,5911,5912,5915,5916,5919],{},[2978,5904,5905],{},[3033,5906,3345],{}," — найпоширеніший вибір. Не нав'язує порядок (що відповідає SQL без ",[3033,5909,5910],{},"ORDER BY","), дозволяє ",[3033,5913,5914],{},"Add"," і ",[3033,5917,5918],{},"Remove",". EF Core може замінити внутрішню реалізацію своїм proxy-об'єктом при Lazy Loading.",[2965,5921,5922,5928,5929,5932],{},[2978,5923,5924,5927],{},[3033,5925,5926],{},"IReadOnlyCollection\u003CT>"," з backing field"," — практика DDD. Доменна сутність сама контролює, хто може додавати елементи до колекції. Зовнішній код не може напряму додати книгу до автора — тільки через метод ",[3033,5930,5931],{},"Author.AddBook(book)",":",[3060,5934,5936],{"className":3062,"code":5935,"language":3064,"meta":3065,"style":3065},"public class Author\n{\n    private readonly List\u003CBook> _books = new();\n\n    // Публічно: тільки читання\n    public IReadOnlyCollection\u003CBook> Books => _books.AsReadOnly();\n\n    // Метод для інкапсульованого додавання\n    public void AddBook(Book book)\n    {\n        ArgumentNullException.ThrowIfNull(book);\n        if (_books.Any(b => b.Isbn == book.Isbn))\n            throw new DomainException($\"Book with ISBN {book.Isbn} already exists\");\n        _books.Add(book);\n    }\n}\n",[3033,5937,5938,5946,5950,5974,5978,5983,6007,6011,6016,6034,6038,6055,6096,6130,6145,6149],{"__ignoreMap":3065},[3069,5939,5940,5942,5944],{"class":3071,"line":3072},[3069,5941,3076],{"class":3075},[3069,5943,3079],{"class":3075},[3069,5945,4592],{"class":3082},[3069,5947,5948],{"class":3071,"line":3090},[3069,5949,3094],{"class":3093},[3069,5951,5952,5954,5957,5959,5961,5963,5965,5967,5969,5971],{"class":3071,"line":3097},[3069,5953,5866],{"class":3075},[3069,5955,5956],{"class":3075}," readonly",[3069,5958,3168],{"class":3082},[3069,5960,3143],{"class":3093},[3069,5962,3053],{"class":3082},[3069,5964,3148],{"class":3093},[3069,5966,5850],{"class":3106},[3069,5968,5879],{"class":3093},[3069,5970,3165],{"class":3075},[3069,5972,5973],{"class":3093},"();\n",[3069,5975,5976],{"class":3071,"line":3128},[3069,5977,3132],{"emptyLinePlaceholder":3131},[3069,5979,5980],{"class":3071,"line":3135},[3069,5981,5982],{"class":3086},"    // Публічно: тільки читання\n",[3069,5984,5985,5987,5989,5991,5993,5995,5997,5999,6001,6003,6005],{"class":3071,"line":3178},[3069,5986,3100],{"class":3075},[3069,5988,5836],{"class":3082},[3069,5990,3143],{"class":3093},[3069,5992,3053],{"class":3082},[3069,5994,3148],{"class":3093},[3069,5996,3151],{"class":3106},[3069,5998,4343],{"class":3093},[3069,6000,5850],{"class":3106},[3069,6002,3044],{"class":3093},[3069,6004,5855],{"class":3667},[3069,6006,5973],{"class":3093},[3069,6008,6009],{"class":3071,"line":3184},[3069,6010,3132],{"emptyLinePlaceholder":3131},[3069,6012,6013],{"class":3071,"line":3189},[3069,6014,6015],{"class":3086},"    // Метод для інкапсульованого додавання\n",[3069,6017,6018,6020,6022,6025,6027,6029,6032],{"class":3071,"line":3202},[3069,6019,3100],{"class":3075},[3069,6021,4282],{"class":3075},[3069,6023,6024],{"class":3667}," AddBook",[3069,6026,4288],{"class":3093},[3069,6028,3053],{"class":3082},[3069,6030,6031],{"class":3106}," book",[3069,6033,3818],{"class":3093},[3069,6035,6036],{"class":3071,"line":3207},[3069,6037,4307],{"class":3093},[3069,6039,6040,6043,6045,6048,6050,6053],{"class":3071,"line":3227},[3069,6041,6042],{"class":3106},"        ArgumentNullException",[3069,6044,3044],{"class":3093},[3069,6046,6047],{"class":3667},"ThrowIfNull",[3069,6049,4288],{"class":3093},[3069,6051,6052],{"class":3106},"book",[3069,6054,3711],{"class":3093},[3069,6056,6057,6061,6063,6065,6067,6070,6072,6075,6077,6079,6081,6084,6087,6089,6091,6093],{"class":3071,"line":3232},[3069,6058,6060],{"class":6059},"sCDza","        if",[3069,6062,3342],{"class":3093},[3069,6064,5850],{"class":3106},[3069,6066,3044],{"class":3093},[3069,6068,6069],{"class":3667},"Any",[3069,6071,4288],{"class":3093},[3069,6073,6074],{"class":3106},"b",[3069,6076,4343],{"class":3093},[3069,6078,6074],{"class":3106},[3069,6080,3044],{"class":3093},[3069,6082,6083],{"class":3106},"Isbn",[3069,6085,6086],{"class":3093}," == ",[3069,6088,6052],{"class":3106},[3069,6090,3044],{"class":3093},[3069,6092,6083],{"class":3106},[3069,6094,6095],{"class":3093},"))\n",[3069,6097,6098,6101,6104,6107,6109,6112,6116,6118,6120,6122,6125,6128],{"class":3071,"line":3256},[3069,6099,6100],{"class":6059},"            throw",[3069,6102,6103],{"class":3075}," new",[3069,6105,6106],{"class":3082}," DomainException",[3069,6108,4288],{"class":3093},[3069,6110,6111],{"class":3676},"$\"Book with ISBN ",[3069,6113,6115],{"class":6114},"sD7JJ","{",[3069,6117,6052],{"class":3106},[3069,6119,3044],{"class":6114},[3069,6121,6083],{"class":3106},[3069,6123,6124],{"class":6114},"}",[3069,6126,6127],{"class":3676}," already exists\"",[3069,6129,3711],{"class":3093},[3069,6131,6132,6135,6137,6139,6141,6143],{"class":3071,"line":3284},[3069,6133,6134],{"class":3106},"        _books",[3069,6136,3044],{"class":3093},[3069,6138,5914],{"class":3667},[3069,6140,4288],{"class":3093},[3069,6142,6052],{"class":3106},[3069,6144,3711],{"class":3093},[3069,6146,6147],{"class":3071,"line":3574},[3069,6148,4462],{"class":3093},[3069,6150,6151],{"class":3071,"line":3579},[3069,6152,3181],{"class":3093},[2965,6154,6155],{},"Для цього потрібна конфігурація backing field:",[3060,6157,6159],{"className":3062,"code":6158,"language":3064,"meta":3065,"style":3065},"builder.Navigation(a => a.Books)\n       .UsePropertyAccessMode(PropertyAccessMode.Field); // EF Core звертається до поля\n",[3033,6160,6161,6184],{"__ignoreMap":3065},[3069,6162,6163,6165,6167,6170,6172,6174,6176,6178,6180,6182],{"class":3071,"line":3072},[3069,6164,4300],{"class":3106},[3069,6166,3044],{"class":3093},[3069,6168,6169],{"class":3667},"Navigation",[3069,6171,4288],{"class":3093},[3069,6173,5554],{"class":3106},[3069,6175,4343],{"class":3093},[3069,6177,5554],{"class":3106},[3069,6179,3044],{"class":3093},[3069,6181,3151],{"class":3106},[3069,6183,3818],{"class":3093},[3069,6185,6186,6189,6192,6194,6197,6199,6202,6204],{"class":3071,"line":3090},[3069,6187,6188],{"class":3093},"       .",[3069,6190,6191],{"class":3667},"UsePropertyAccessMode",[3069,6193,4288],{"class":3093},[3069,6195,6196],{"class":3106},"PropertyAccessMode",[3069,6198,3044],{"class":3093},[3069,6200,6201],{"class":3106},"Field",[3069,6203,4454],{"class":3093},[3069,6205,6206],{"class":3086},"// EF Core звертається до поля\n",[3327,6208,6210],{"id":6209},"односторонні-vs-двосторонні-навігації","Односторонні vs двосторонні навігації",[2965,6212,6213,6216],{},[2978,6214,6215],{},"Двостороння"," (bidirectional): навігація є з обох сторін:",[3060,6218,6220],{"className":3062,"code":6219,"language":3064,"meta":3065,"style":3065},"public class Author\n{\n    public ICollection\u003CBook> Books { get; set; } = new List\u003CBook>(); // → зворотня\n}\npublic class Book\n{\n    public int AuthorId { get; set; }             // FK\n    public Author Author { get; set; } = null!;  // → пряма\n}\n",[3033,6221,6222,6230,6234,6272,6276,6284,6288,6309,6334],{"__ignoreMap":3065},[3069,6223,6224,6226,6228],{"class":3071,"line":3072},[3069,6225,3076],{"class":3075},[3069,6227,3079],{"class":3075},[3069,6229,4592],{"class":3082},[3069,6231,6232],{"class":3071,"line":3090},[3069,6233,3094],{"class":3093},[3069,6235,6236,6238,6240,6242,6244,6246,6248,6250,6252,6254,6256,6258,6260,6262,6264,6266,6269],{"class":3071,"line":3097},[3069,6237,3100],{"class":3075},[3069,6239,3140],{"class":3082},[3069,6241,3143],{"class":3093},[3069,6243,3053],{"class":3082},[3069,6245,3148],{"class":3093},[3069,6247,3151],{"class":3106},[3069,6249,3110],{"class":3093},[3069,6251,3113],{"class":3075},[3069,6253,3116],{"class":3093},[3069,6255,3119],{"class":3075},[3069,6257,3162],{"class":3093},[3069,6259,3165],{"class":3075},[3069,6261,3168],{"class":3082},[3069,6263,3143],{"class":3093},[3069,6265,3053],{"class":3082},[3069,6267,6268],{"class":3093},">(); ",[3069,6270,6271],{"class":3086},"// → зворотня\n",[3069,6273,6274],{"class":3071,"line":3128},[3069,6275,3181],{"class":3093},[3069,6277,6278,6280,6282],{"class":3071,"line":3135},[3069,6279,3076],{"class":3075},[3069,6281,3079],{"class":3075},[3069,6283,5663],{"class":3082},[3069,6285,6286],{"class":3071,"line":3178},[3069,6287,3094],{"class":3093},[3069,6289,6290,6292,6294,6296,6298,6300,6302,6304,6306],{"class":3071,"line":3184},[3069,6291,3100],{"class":3075},[3069,6293,3103],{"class":3075},[3069,6295,3239],{"class":3106},[3069,6297,3110],{"class":3093},[3069,6299,3113],{"class":3075},[3069,6301,3116],{"class":3093},[3069,6303,3119],{"class":3075},[3069,6305,5720],{"class":3093},[3069,6307,6308],{"class":3086},"// FK\n",[3069,6310,6311,6313,6315,6317,6319,6321,6323,6325,6327,6329,6331],{"class":3071,"line":3189},[3069,6312,3100],{"class":3075},[3069,6314,3083],{"class":3082},[3069,6316,3083],{"class":3106},[3069,6318,3110],{"class":3093},[3069,6320,3113],{"class":3075},[3069,6322,3116],{"class":3093},[3069,6324,3119],{"class":3075},[3069,6326,3162],{"class":3093},[3069,6328,3275],{"class":3075},[3069,6330,3278],{"class":3093},[3069,6332,6333],{"class":3086},"// → пряма\n",[3069,6335,6336],{"class":3071,"line":3202},[3069,6337,3181],{"class":3093},[2965,6339,6340,6343],{},[2978,6341,6342],{},"Одностороння"," (unidirectional): навігація тільки з одного боку:",[3060,6345,6347],{"className":3062,"code":6346,"language":3064,"meta":3065,"style":3065},"// Тільки Book знає про Author, Author нічого не знає про Books\npublic class Book\n{\n    public int AuthorId { get; set; }\n    public Author Author { get; set; } = null!; // тільки ця навігація існує\n}\n// Немає Author.Books!\n",[3033,6348,6349,6354,6362,6366,6384,6410,6414],{"__ignoreMap":3065},[3069,6350,6351],{"class":3071,"line":3072},[3069,6352,6353],{"class":3086},"// Тільки Book знає про Author, Author нічого не знає про Books\n",[3069,6355,6356,6358,6360],{"class":3071,"line":3090},[3069,6357,3076],{"class":3075},[3069,6359,3079],{"class":3075},[3069,6361,5663],{"class":3082},[3069,6363,6364],{"class":3071,"line":3097},[3069,6365,3094],{"class":3093},[3069,6367,6368,6370,6372,6374,6376,6378,6380,6382],{"class":3071,"line":3128},[3069,6369,3100],{"class":3075},[3069,6371,3103],{"class":3075},[3069,6373,3239],{"class":3106},[3069,6375,3110],{"class":3093},[3069,6377,3113],{"class":3075},[3069,6379,3116],{"class":3093},[3069,6381,3119],{"class":3075},[3069,6383,3224],{"class":3093},[3069,6385,6386,6388,6390,6392,6394,6396,6398,6400,6402,6404,6407],{"class":3071,"line":3135},[3069,6387,3100],{"class":3075},[3069,6389,3083],{"class":3082},[3069,6391,3083],{"class":3106},[3069,6393,3110],{"class":3093},[3069,6395,3113],{"class":3075},[3069,6397,3116],{"class":3093},[3069,6399,3119],{"class":3075},[3069,6401,3162],{"class":3093},[3069,6403,3275],{"class":3075},[3069,6405,6406],{"class":3093},"!; ",[3069,6408,6409],{"class":3086},"// тільки ця навігація існує\n",[3069,6411,6412],{"class":3071,"line":3178},[3069,6413,3181],{"class":3093},[3069,6415,6416],{"class":3071,"line":3184},[3069,6417,6418],{"class":3086},"// Немає Author.Books!\n",[2965,6420,6421],{},"Односторонні навігації корисні, коли:",[2972,6423,6424,6427,6442],{},[2975,6425,6426],{},"Колекція з боку Principal є величезною (тисячі елементів) і ніколи не завантажується повністю",[2975,6428,6429,6430,6432,6433,4213,6436,6438,6439,6441],{},"Концептуально зв'язок має сенс тільки в одному напрямку (наприклад, ",[3033,6431,3840],{}," знає про ",[3033,6434,6435],{},"Customer",[3033,6437,6435],{}," не завжди потребує список всіх своїх ",[3033,6440,3668],{}," у моделі)",[2975,6443,6444],{},"Ви дотримуєтесь строгих принципів DDD і хочете контролювати, хто може «бачити» колекцію",[2965,6446,6447,6448,6451],{},"DDL для односторонньої навігації ",[2978,6449,6450],{},"ідентичний"," DDL для двосторонньої. Це виключно конструкція C#-моделі.",[3010,6453],{},[2960,6455,6457],{"id":6456},"самореферентні-звязки-дерева-та-ієрархії","Самореферентні зв'язки: дерева та ієрархії",[2965,6459,6460],{},"Самореферентний (self-referencing) зв'язок — це зв'язок сутності зі своїм власним типом. Найкласичний приклад — ієрархічна структура: категорії з підкатегоріями, коментарі з відповідями, організаційна ієрархія співробітників.",[3327,6462,6464],{"id":6463},"one-to-many-самореферентний-ієрархія","One-to-Many самореферентний (ієрархія)",[3060,6466,6468],{"className":3062,"code":6467,"language":3064,"meta":3065,"style":3065},"public class Category\n{\n    public int Id { get; set; }\n    public string Name { get; set; } = string.Empty;\n\n    // FK до батьківської категорії (nullable: коренева категорія не має батька)\n    public int? ParentCategoryId { get; set; }\n\n    // Навігація до батька (Optional — може бути null)\n    public Category? ParentCategory { get; set; }\n\n    // Навігація до дочірніх категорій\n    public ICollection\u003CCategory> SubCategories { get; set; } = new List\u003CCategory>();\n}\n",[3033,6469,6470,6478,6482,6500,6526,6530,6535,6556,6560,6565,6586,6590,6595,6630],{"__ignoreMap":3065},[3069,6471,6472,6474,6476],{"class":3071,"line":3072},[3069,6473,3076],{"class":3075},[3069,6475,3079],{"class":3075},[3069,6477,3999],{"class":3082},[3069,6479,6480],{"class":3071,"line":3090},[3069,6481,3094],{"class":3093},[3069,6483,6484,6486,6488,6490,6492,6494,6496,6498],{"class":3071,"line":3097},[3069,6485,3100],{"class":3075},[3069,6487,3103],{"class":3075},[3069,6489,3107],{"class":3106},[3069,6491,3110],{"class":3093},[3069,6493,3113],{"class":3075},[3069,6495,3116],{"class":3093},[3069,6497,3119],{"class":3075},[3069,6499,3224],{"class":3093},[3069,6501,6502,6504,6506,6508,6510,6512,6514,6516,6518,6520,6522,6524],{"class":3071,"line":3128},[3069,6503,3100],{"class":3075},[3069,6505,3897],{"class":3075},[3069,6507,4030],{"class":3106},[3069,6509,3110],{"class":3093},[3069,6511,3113],{"class":3075},[3069,6513,3116],{"class":3093},[3069,6515,3119],{"class":3075},[3069,6517,3162],{"class":3093},[3069,6519,3913],{"class":3075},[3069,6521,3044],{"class":3093},[3069,6523,3918],{"class":3106},[3069,6525,3921],{"class":3093},[3069,6527,6528],{"class":3071,"line":3135},[3069,6529,3132],{"emptyLinePlaceholder":3131},[3069,6531,6532],{"class":3071,"line":3178},[3069,6533,6534],{"class":3086},"    // FK до батьківської категорії (nullable: коренева категорія не має батька)\n",[3069,6536,6537,6539,6541,6543,6546,6548,6550,6552,6554],{"class":3071,"line":3184},[3069,6538,3100],{"class":3075},[3069,6540,3103],{"class":3075},[3069,6542,3939],{"class":3093},[3069,6544,6545],{"class":3106},"ParentCategoryId",[3069,6547,3110],{"class":3093},[3069,6549,3113],{"class":3075},[3069,6551,3116],{"class":3093},[3069,6553,3119],{"class":3075},[3069,6555,3224],{"class":3093},[3069,6557,6558],{"class":3071,"line":3189},[3069,6559,3132],{"emptyLinePlaceholder":3131},[3069,6561,6562],{"class":3071,"line":3202},[3069,6563,6564],{"class":3086},"    // Навігація до батька (Optional — може бути null)\n",[3069,6566,6567,6569,6571,6573,6576,6578,6580,6582,6584],{"class":3071,"line":3207},[3069,6568,3100],{"class":3075},[3069,6570,3968],{"class":3082},[3069,6572,3939],{"class":3093},[3069,6574,6575],{"class":3106},"ParentCategory",[3069,6577,3110],{"class":3093},[3069,6579,3113],{"class":3075},[3069,6581,3116],{"class":3093},[3069,6583,3119],{"class":3075},[3069,6585,3224],{"class":3093},[3069,6587,6588],{"class":3071,"line":3227},[3069,6589,3132],{"emptyLinePlaceholder":3131},[3069,6591,6592],{"class":3071,"line":3232},[3069,6593,6594],{"class":3086},"    // Навігація до дочірніх категорій\n",[3069,6596,6597,6599,6601,6603,6605,6607,6610,6612,6614,6616,6618,6620,6622,6624,6626,6628],{"class":3071,"line":3256},[3069,6598,3100],{"class":3075},[3069,6600,3140],{"class":3082},[3069,6602,3143],{"class":3093},[3069,6604,3367],{"class":3082},[3069,6606,3148],{"class":3093},[3069,6608,6609],{"class":3106},"SubCategories",[3069,6611,3110],{"class":3093},[3069,6613,3113],{"class":3075},[3069,6615,3116],{"class":3093},[3069,6617,3119],{"class":3075},[3069,6619,3162],{"class":3093},[3069,6621,3165],{"class":3075},[3069,6623,3168],{"class":3082},[3069,6625,3143],{"class":3093},[3069,6627,3367],{"class":3082},[3069,6629,3175],{"class":3093},[3069,6631,6632],{"class":3071,"line":3284},[3069,6633,3181],{"class":3093},[3060,6635,6637],{"className":3649,"code":6636,"language":3651,"meta":3065,"style":3065},"CREATE TABLE \"Categories\" (\n    \"Id\" INTEGER NOT NULL PRIMARY KEY AUTOINCREMENT,\n    \"Name\" TEXT NOT NULL,\n    \"ParentCategoryId\" INTEGER NULL,  -- NULL для кореневих категорій\n    CONSTRAINT \"FK_Categories_Categories_ParentCategoryId\"\n        FOREIGN KEY (\"ParentCategoryId\") REFERENCES \"Categories\" (\"Id\")\n        -- !! Sqlite та деякі СУБД не підтримують CASCADE на self-referencing\n        ON DELETE RESTRICT  -- або NO ACTION\n);\n",[3033,6638,6639,6652,6664,6674,6688,6695,6716,6721,6731],{"__ignoreMap":3065},[3069,6640,6641,6643,6645,6647,6650],{"class":3071,"line":3072},[3069,6642,3658],{"class":3075},[3069,6644,3661],{"class":3075},[3069,6646,3664],{"class":3093},[3069,6648,6649],{"class":3667},"Categories",[3069,6651,3671],{"class":3093},[3069,6653,6654,6656,6658,6660,6662],{"class":3071,"line":3090},[3069,6655,3677],{"class":3676},[3069,6657,3680],{"class":3075},[3069,6659,3683],{"class":3075},[3069,6661,3692],{"class":3075},[3069,6663,3695],{"class":3093},[3069,6665,6666,6668,6670,6672],{"class":3071,"line":3097},[3069,6667,4871],{"class":3676},[3069,6669,3703],{"class":3075},[3069,6671,3683],{"class":3075},[3069,6673,3757],{"class":3093},[3069,6675,6676,6679,6681,6683,6685],{"class":3071,"line":3128},[3069,6677,6678],{"class":3676},"    \"ParentCategoryId\"",[3069,6680,3680],{"class":3075},[3069,6682,4142],{"class":3075},[3069,6684,3780],{"class":3093},[3069,6686,6687],{"class":3086},"-- NULL для кореневих категорій\n",[3069,6689,6690,6692],{"class":3071,"line":3135},[3069,6691,3788],{"class":3075},[3069,6693,6694],{"class":3676}," \"FK_Categories_Categories_ParentCategoryId\"\n",[3069,6696,6697,6699,6701,6704,6706,6708,6710,6712,6714],{"class":3071,"line":3178},[3069,6698,3796],{"class":3075},[3069,6700,3342],{"class":3093},[3069,6702,6703],{"class":3676},"\"ParentCategoryId\"",[3069,6705,3804],{"class":3093},[3069,6707,3807],{"class":3075},[3069,6709,4170],{"class":3676},[3069,6711,3342],{"class":3093},[3069,6713,3815],{"class":3676},[3069,6715,3818],{"class":3093},[3069,6717,6718],{"class":3071,"line":3184},[3069,6719,6720],{"class":3086},"        -- !! Sqlite та деякі СУБД не підтримують CASCADE на self-referencing\n",[3069,6722,6723,6725,6728],{"class":3071,"line":3189},[3069,6724,4181],{"class":3075},[3069,6726,6727],{"class":3093}," RESTRICT  ",[3069,6729,6730],{"class":3086},"-- або NO ACTION\n",[3069,6732,6733],{"class":3071,"line":3202},[3069,6734,3711],{"class":3093},[6736,6737,6738,6739,6741],"caution",{},"Cascade delete для самореферентних зв'язків потребує обережності і може не підтримуватись деякими СУБД (наприклад, SQLite у старих версіях). Для ієрархій зазвичай краще використовувати ",[3033,6740,4238],{}," і видаляти дочірні вручну знизу вгору.",[2965,6743,6744],{},"Fluent API для самореферентного One-to-Many:",[3060,6746,6749],{"className":3062,"code":6747,"filename":6748,"language":3064,"meta":3065,"style":3065},"public class CategoryConfiguration : IEntityTypeConfiguration\u003CCategory>\n{\n    public void Configure(EntityTypeBuilder\u003CCategory> builder)\n    {\n        builder.HasKey(c => c.Id);\n\n        builder.Property(c => c.Name)\n               .IsRequired()\n               .HasMaxLength(200);\n\n        // Self-referencing One-to-Many\n        builder\n            .HasOne(c => c.ParentCategory)     // дочірня → батьківська\n            .WithMany(c => c.SubCategories)    // батьківська → список дочірніх\n            .HasForeignKey(c => c.ParentCategoryId)\n            .IsRequired(false)                 // Optional: коренева категорія не має батька\n            .OnDelete(DeleteBehavior.Restrict); // Забороняємо видалення категорії з підкатегоріями\n    }\n}\n","Configurations/CategoryConfiguration.cs",[3033,6750,6751,6770,6774,6796,6800,6825,6829,6853,6862,6877,6881,6886,6890,6914,6937,6957,6974,6993,6997],{"__ignoreMap":3065},[3069,6752,6753,6755,6757,6760,6762,6764,6766,6768],{"class":3071,"line":3072},[3069,6754,3076],{"class":3075},[3069,6756,3079],{"class":3075},[3069,6758,6759],{"class":3082}," CategoryConfiguration",[3069,6761,4261],{"class":3093},[3069,6763,4264],{"class":3082},[3069,6765,3143],{"class":3093},[3069,6767,3367],{"class":3082},[3069,6769,4271],{"class":3093},[3069,6771,6772],{"class":3071,"line":3090},[3069,6773,3094],{"class":3093},[3069,6775,6776,6778,6780,6782,6784,6786,6788,6790,6792,6794],{"class":3071,"line":3097},[3069,6777,3100],{"class":3075},[3069,6779,4282],{"class":3075},[3069,6781,4285],{"class":3667},[3069,6783,4288],{"class":3093},[3069,6785,4291],{"class":3082},[3069,6787,3143],{"class":3093},[3069,6789,3367],{"class":3082},[3069,6791,3148],{"class":3093},[3069,6793,4300],{"class":3106},[3069,6795,3818],{"class":3093},[3069,6797,6798],{"class":3071,"line":3128},[3069,6799,4307],{"class":3093},[3069,6801,6802,6805,6807,6810,6812,6815,6817,6819,6821,6823],{"class":3071,"line":3135},[3069,6803,6804],{"class":3106},"        builder",[3069,6806,3044],{"class":3093},[3069,6808,6809],{"class":3667},"HasKey",[3069,6811,4288],{"class":3093},[3069,6813,6814],{"class":3106},"c",[3069,6816,4343],{"class":3093},[3069,6818,6814],{"class":3106},[3069,6820,3044],{"class":3093},[3069,6822,5332],{"class":3106},[3069,6824,3711],{"class":3093},[3069,6826,6827],{"class":3071,"line":3178},[3069,6828,3132],{"emptyLinePlaceholder":3131},[3069,6830,6831,6833,6835,6838,6840,6842,6844,6846,6848,6851],{"class":3071,"line":3184},[3069,6832,6804],{"class":3106},[3069,6834,3044],{"class":3093},[3069,6836,6837],{"class":3667},"Property",[3069,6839,4288],{"class":3093},[3069,6841,6814],{"class":3106},[3069,6843,4343],{"class":3093},[3069,6845,6814],{"class":3106},[3069,6847,3044],{"class":3093},[3069,6849,6850],{"class":3106},"Name",[3069,6852,3818],{"class":3093},[3069,6854,6855,6858,6860],{"class":3071,"line":3189},[3069,6856,6857],{"class":3093},"               .",[3069,6859,4410],{"class":3667},[3069,6861,5600],{"class":3093},[3069,6863,6864,6866,6869,6871,6875],{"class":3071,"line":3202},[3069,6865,6857],{"class":3093},[3069,6867,6868],{"class":3667},"HasMaxLength",[3069,6870,4288],{"class":3093},[3069,6872,6874],{"class":6873},"sJj4R","200",[3069,6876,3711],{"class":3093},[3069,6878,6879],{"class":3071,"line":3207},[3069,6880,3132],{"emptyLinePlaceholder":3131},[3069,6882,6883],{"class":3071,"line":3227},[3069,6884,6885],{"class":3086},"        // Self-referencing One-to-Many\n",[3069,6887,6888],{"class":3071,"line":3232},[3069,6889,4327],{"class":3106},[3069,6891,6892,6894,6896,6898,6900,6902,6904,6906,6908,6911],{"class":3071,"line":3256},[3069,6893,4332],{"class":3093},[3069,6895,4335],{"class":3667},[3069,6897,4288],{"class":3093},[3069,6899,6814],{"class":3106},[3069,6901,4343],{"class":3093},[3069,6903,6814],{"class":3106},[3069,6905,3044],{"class":3093},[3069,6907,6575],{"class":3106},[3069,6909,6910],{"class":3093},")     ",[3069,6912,6913],{"class":3086},"// дочірня → батьківська\n",[3069,6915,6916,6918,6920,6922,6924,6926,6928,6930,6932,6934],{"class":3071,"line":3284},[3069,6917,4332],{"class":3093},[3069,6919,4362],{"class":3667},[3069,6921,4288],{"class":3093},[3069,6923,6814],{"class":3106},[3069,6925,4343],{"class":3093},[3069,6927,6814],{"class":3106},[3069,6929,3044],{"class":3093},[3069,6931,6609],{"class":3106},[3069,6933,4378],{"class":3093},[3069,6935,6936],{"class":3086},"// батьківська → список дочірніх\n",[3069,6938,6939,6941,6943,6945,6947,6949,6951,6953,6955],{"class":3071,"line":3574},[3069,6940,4332],{"class":3093},[3069,6942,4388],{"class":3667},[3069,6944,4288],{"class":3093},[3069,6946,6814],{"class":3106},[3069,6948,4343],{"class":3093},[3069,6950,6814],{"class":3106},[3069,6952,3044],{"class":3093},[3069,6954,6545],{"class":3106},[3069,6956,3818],{"class":3093},[3069,6958,6959,6961,6963,6965,6968,6971],{"class":3071,"line":3579},[3069,6960,4332],{"class":3093},[3069,6962,4410],{"class":3667},[3069,6964,4288],{"class":3093},[3069,6966,6967],{"class":3075},"false",[3069,6969,6970],{"class":3093},")                 ",[3069,6972,6973],{"class":3086},"// Optional: коренева категорія не має батька\n",[3069,6975,6976,6978,6980,6982,6984,6986,6988,6990],{"class":3071,"line":3585},[3069,6977,4332],{"class":3093},[3069,6979,4423],{"class":3667},[3069,6981,4288],{"class":3093},[3069,6983,4428],{"class":3106},[3069,6985,3044],{"class":3093},[3069,6987,4238],{"class":3106},[3069,6989,4454],{"class":3093},[3069,6991,6992],{"class":3086},"// Забороняємо видалення категорії з підкатегоріями\n",[3069,6994,6995],{"class":3071,"line":3605},[3069,6996,4462],{"class":3093},[3069,6998,6999],{"class":3071,"line":3610},[3069,7000,3181],{"class":3093},[3327,7002,7004],{"id":7003},"завантаження-ієрархії","Завантаження ієрархії",[2965,7006,7007,7008,7011,7012,7015],{},"Рекурсивне завантаження ієрархії через ",[3033,7009,7010],{},"Include()"," потребує окремої уваги. ",[3033,7013,7014],{},"ThenInclude()"," дозволяє заглибитись на кілька рівнів, але не рекурсивно:",[3060,7017,7019],{"className":3062,"code":7018,"language":3064,"meta":3065,"style":3065},"// Завантажити 3 рівні ієрархії\nvar categories = await context.Categories\n    .Where(c => c.ParentCategoryId == null) // тільки кореневі\n    .Include(c => c.SubCategories)           // рівень 1\n        .ThenInclude(c => c.SubCategories)  // рівень 2\n            .ThenInclude(c => c.SubCategories) // рівень 3\n    .ToListAsync();\n",[3033,7020,7021,7026,7047,7075,7099,7124,7147],{"__ignoreMap":3065},[3069,7022,7023],{"class":3071,"line":3072},[3069,7024,7025],{"class":3086},"// Завантажити 3 рівні ієрархії\n",[3069,7027,7028,7031,7034,7036,7039,7042,7044],{"class":3071,"line":3090},[3069,7029,7030],{"class":3075},"var",[3069,7032,7033],{"class":3106}," categories",[3069,7035,5879],{"class":3093},[3069,7037,7038],{"class":3075},"await",[3069,7040,7041],{"class":3106}," context",[3069,7043,3044],{"class":3093},[3069,7045,7046],{"class":3106},"Categories\n",[3069,7048,7049,7051,7054,7056,7058,7060,7062,7064,7066,7068,7070,7072],{"class":3071,"line":3097},[3069,7050,4489],{"class":3093},[3069,7052,7053],{"class":3667},"Where",[3069,7055,4288],{"class":3093},[3069,7057,6814],{"class":3106},[3069,7059,4343],{"class":3093},[3069,7061,6814],{"class":3106},[3069,7063,3044],{"class":3093},[3069,7065,6545],{"class":3106},[3069,7067,6086],{"class":3093},[3069,7069,3275],{"class":3075},[3069,7071,3804],{"class":3093},[3069,7073,7074],{"class":3086},"// тільки кореневі\n",[3069,7076,7077,7079,7082,7084,7086,7088,7090,7092,7094,7096],{"class":3071,"line":3128},[3069,7078,4489],{"class":3093},[3069,7080,7081],{"class":3667},"Include",[3069,7083,4288],{"class":3093},[3069,7085,6814],{"class":3106},[3069,7087,4343],{"class":3093},[3069,7089,6814],{"class":3106},[3069,7091,3044],{"class":3093},[3069,7093,6609],{"class":3106},[3069,7095,4536],{"class":3093},[3069,7097,7098],{"class":3086},"// рівень 1\n",[3069,7100,7101,7104,7107,7109,7111,7113,7115,7117,7119,7121],{"class":3071,"line":3135},[3069,7102,7103],{"class":3093},"        .",[3069,7105,7106],{"class":3667},"ThenInclude",[3069,7108,4288],{"class":3093},[3069,7110,6814],{"class":3106},[3069,7112,4343],{"class":3093},[3069,7114,6814],{"class":3106},[3069,7116,3044],{"class":3093},[3069,7118,6609],{"class":3106},[3069,7120,4436],{"class":3093},[3069,7122,7123],{"class":3086},"// рівень 2\n",[3069,7125,7126,7128,7130,7132,7134,7136,7138,7140,7142,7144],{"class":3071,"line":3178},[3069,7127,4332],{"class":3093},[3069,7129,7106],{"class":3667},[3069,7131,4288],{"class":3093},[3069,7133,6814],{"class":3106},[3069,7135,4343],{"class":3093},[3069,7137,6814],{"class":3106},[3069,7139,3044],{"class":3093},[3069,7141,6609],{"class":3106},[3069,7143,3804],{"class":3093},[3069,7145,7146],{"class":3086},"// рівень 3\n",[3069,7148,7149,7151,7154],{"class":3071,"line":3184},[3069,7150,4489],{"class":3093},[3069,7152,7153],{"class":3667},"ToListAsync",[3069,7155,5973],{"class":3093},[2965,7157,7158,7159,7161],{},"Цей підхід простий, але обмежений: кожен ",[3033,7160,7106],{}," — це додатковий JOIN у SQL, і кількість рівнів треба знати заздалегідь. При невідомій або великій глибині дерева потрібні альтернативи.",[3327,7163,7165],{"id":7164},"рекурсивне-завантаження-в-c-ітеративний-підхід","Рекурсивне завантаження в C# (ітеративний підхід)",[2965,7167,7168,7169,7172],{},"Якщо дерево довільної глибини, але не надто велике за кількістю вузлів — можна завантажити ",[2978,7170,7171],{},"всі"," категорії одним запитом, а потім зібрати дерево в пам'яті:",[3060,7174,7176],{"className":3062,"code":7175,"language":3064,"meta":3065,"style":3065},"// Завантажуємо ВСІ категорії одним запитом (без Include!)\nvar allCategories = await context.Categories\n    .AsNoTracking()\n    .ToListAsync();\n\n// Групуємо у словник: ParentId → List\u003CCategory>\nvar childrenByParent = allCategories\n    .Where(c => c.ParentCategoryId.HasValue)\n    .GroupBy(c => c.ParentCategoryId!.Value)\n    .ToDictionary(g => g.Key, g => g.ToList());\n\n// Знаходимо кореневі категорії\nvar roots = allCategories\n    .Where(c => c.ParentCategoryId == null)\n    .ToList();\n\n// Рекурсивно заповнюємо SubCategories\nvoid FillChildren(Category category)\n{\n    if (childrenByParent.TryGetValue(category.Id, out var children))\n    {\n        foreach (var child in children)\n        {\n            category.SubCategories.Add(child);\n            FillChildren(child); // рекурсія\n        }\n    }\n}\n\nforeach (var root in roots)\n    FillChildren(root);\n// Результат: roots — список кореневих з вкладеними дітьми на всіх рівнях\n// SQL: ONE single SELECT без JOIN\n",[3033,7177,7178,7183,7200,7209,7217,7221,7226,7238,7263,7290,7327,7331,7336,7347,7371,7379,7383,7388,7405,7409,7446,7450,7470,7476,7497,7512,7518,7523,7528,7533,7552,7565,7571],{"__ignoreMap":3065},[3069,7179,7180],{"class":3071,"line":3072},[3069,7181,7182],{"class":3086},"// Завантажуємо ВСІ категорії одним запитом (без Include!)\n",[3069,7184,7185,7187,7190,7192,7194,7196,7198],{"class":3071,"line":3090},[3069,7186,7030],{"class":3075},[3069,7188,7189],{"class":3106}," allCategories",[3069,7191,5879],{"class":3093},[3069,7193,7038],{"class":3075},[3069,7195,7041],{"class":3106},[3069,7197,3044],{"class":3093},[3069,7199,7046],{"class":3106},[3069,7201,7202,7204,7207],{"class":3071,"line":3097},[3069,7203,4489],{"class":3093},[3069,7205,7206],{"class":3667},"AsNoTracking",[3069,7208,5600],{"class":3093},[3069,7210,7211,7213,7215],{"class":3071,"line":3128},[3069,7212,4489],{"class":3093},[3069,7214,7153],{"class":3667},[3069,7216,5973],{"class":3093},[3069,7218,7219],{"class":3071,"line":3135},[3069,7220,3132],{"emptyLinePlaceholder":3131},[3069,7222,7223],{"class":3071,"line":3178},[3069,7224,7225],{"class":3086},"// Групуємо у словник: ParentId → List\u003CCategory>\n",[3069,7227,7228,7230,7233,7235],{"class":3071,"line":3184},[3069,7229,7030],{"class":3075},[3069,7231,7232],{"class":3106}," childrenByParent",[3069,7234,5879],{"class":3093},[3069,7236,7237],{"class":3106},"allCategories\n",[3069,7239,7240,7242,7244,7246,7248,7250,7252,7254,7256,7258,7261],{"class":3071,"line":3189},[3069,7241,4489],{"class":3093},[3069,7243,7053],{"class":3667},[3069,7245,4288],{"class":3093},[3069,7247,6814],{"class":3106},[3069,7249,4343],{"class":3093},[3069,7251,6814],{"class":3106},[3069,7253,3044],{"class":3093},[3069,7255,6545],{"class":3106},[3069,7257,3044],{"class":3093},[3069,7259,7260],{"class":3106},"HasValue",[3069,7262,3818],{"class":3093},[3069,7264,7265,7267,7270,7272,7274,7276,7278,7280,7282,7285,7288],{"class":3071,"line":3202},[3069,7266,4489],{"class":3093},[3069,7268,7269],{"class":3667},"GroupBy",[3069,7271,4288],{"class":3093},[3069,7273,6814],{"class":3106},[3069,7275,4343],{"class":3093},[3069,7277,6814],{"class":3106},[3069,7279,3044],{"class":3093},[3069,7281,6545],{"class":3106},[3069,7283,7284],{"class":3093},"!.",[3069,7286,7287],{"class":3106},"Value",[3069,7289,3818],{"class":3093},[3069,7291,7292,7294,7297,7299,7302,7304,7306,7308,7311,7313,7315,7317,7319,7321,7324],{"class":3071,"line":3207},[3069,7293,4489],{"class":3093},[3069,7295,7296],{"class":3667},"ToDictionary",[3069,7298,4288],{"class":3093},[3069,7300,7301],{"class":3106},"g",[3069,7303,4343],{"class":3093},[3069,7305,7301],{"class":3106},[3069,7307,3044],{"class":3093},[3069,7309,7310],{"class":3106},"Key",[3069,7312,3346],{"class":3093},[3069,7314,7301],{"class":3106},[3069,7316,4343],{"class":3093},[3069,7318,7301],{"class":3106},[3069,7320,3044],{"class":3093},[3069,7322,7323],{"class":3667},"ToList",[3069,7325,7326],{"class":3093},"());\n",[3069,7328,7329],{"class":3071,"line":3227},[3069,7330,3132],{"emptyLinePlaceholder":3131},[3069,7332,7333],{"class":3071,"line":3232},[3069,7334,7335],{"class":3086},"// Знаходимо кореневі категорії\n",[3069,7337,7338,7340,7343,7345],{"class":3071,"line":3256},[3069,7339,7030],{"class":3075},[3069,7341,7342],{"class":3106}," roots",[3069,7344,5879],{"class":3093},[3069,7346,7237],{"class":3106},[3069,7348,7349,7351,7353,7355,7357,7359,7361,7363,7365,7367,7369],{"class":3071,"line":3284},[3069,7350,4489],{"class":3093},[3069,7352,7053],{"class":3667},[3069,7354,4288],{"class":3093},[3069,7356,6814],{"class":3106},[3069,7358,4343],{"class":3093},[3069,7360,6814],{"class":3106},[3069,7362,3044],{"class":3093},[3069,7364,6545],{"class":3106},[3069,7366,6086],{"class":3093},[3069,7368,3275],{"class":3075},[3069,7370,3818],{"class":3093},[3069,7372,7373,7375,7377],{"class":3071,"line":3574},[3069,7374,4489],{"class":3093},[3069,7376,7323],{"class":3667},[3069,7378,5973],{"class":3093},[3069,7380,7381],{"class":3071,"line":3579},[3069,7382,3132],{"emptyLinePlaceholder":3131},[3069,7384,7385],{"class":3071,"line":3585},[3069,7386,7387],{"class":3086},"// Рекурсивно заповнюємо SubCategories\n",[3069,7389,7390,7393,7396,7398,7400,7403],{"class":3071,"line":3605},[3069,7391,7392],{"class":3075},"void",[3069,7394,7395],{"class":3667}," FillChildren",[3069,7397,4288],{"class":3093},[3069,7399,3367],{"class":3082},[3069,7401,7402],{"class":3106}," category",[3069,7404,3818],{"class":3093},[3069,7406,7407],{"class":3071,"line":3610},[3069,7408,3094],{"class":3093},[3069,7410,7411,7414,7416,7419,7421,7424,7426,7429,7431,7433,7435,7438,7441,7444],{"class":3071,"line":3616},[3069,7412,7413],{"class":6059},"    if",[3069,7415,3342],{"class":3093},[3069,7417,7418],{"class":3106},"childrenByParent",[3069,7420,3044],{"class":3093},[3069,7422,7423],{"class":3667},"TryGetValue",[3069,7425,4288],{"class":3093},[3069,7427,7428],{"class":3106},"category",[3069,7430,3044],{"class":3093},[3069,7432,5332],{"class":3106},[3069,7434,3346],{"class":3093},[3069,7436,7437],{"class":3075},"out",[3069,7439,7440],{"class":3075}," var",[3069,7442,7443],{"class":3106}," children",[3069,7445,6095],{"class":3093},[3069,7447,7448],{"class":3071,"line":3641},[3069,7449,4307],{"class":3093},[3069,7451,7453,7456,7458,7460,7463,7466,7468],{"class":3071,"line":7452},22,[3069,7454,7455],{"class":6059},"        foreach",[3069,7457,3342],{"class":3093},[3069,7459,7030],{"class":3075},[3069,7461,7462],{"class":3106}," child",[3069,7464,7465],{"class":6059}," in",[3069,7467,7443],{"class":3106},[3069,7469,3818],{"class":3093},[3069,7471,7473],{"class":3071,"line":7472},23,[3069,7474,7475],{"class":3093},"        {\n",[3069,7477,7479,7482,7484,7486,7488,7490,7492,7495],{"class":3071,"line":7478},24,[3069,7480,7481],{"class":3106},"            category",[3069,7483,3044],{"class":3093},[3069,7485,6609],{"class":3106},[3069,7487,3044],{"class":3093},[3069,7489,5914],{"class":3667},[3069,7491,4288],{"class":3093},[3069,7493,7494],{"class":3106},"child",[3069,7496,3711],{"class":3093},[3069,7498,7500,7503,7505,7507,7509],{"class":3071,"line":7499},25,[3069,7501,7502],{"class":3667},"            FillChildren",[3069,7504,4288],{"class":3093},[3069,7506,7494],{"class":3106},[3069,7508,4454],{"class":3093},[3069,7510,7511],{"class":3086},"// рекурсія\n",[3069,7513,7515],{"class":3071,"line":7514},26,[3069,7516,7517],{"class":3093},"        }\n",[3069,7519,7521],{"class":3071,"line":7520},27,[3069,7522,4462],{"class":3093},[3069,7524,7526],{"class":3071,"line":7525},28,[3069,7527,3181],{"class":3093},[3069,7529,7531],{"class":3071,"line":7530},29,[3069,7532,3132],{"emptyLinePlaceholder":3131},[3069,7534,7536,7539,7541,7543,7546,7548,7550],{"class":3071,"line":7535},30,[3069,7537,7538],{"class":6059},"foreach",[3069,7540,3342],{"class":3093},[3069,7542,7030],{"class":3075},[3069,7544,7545],{"class":3106}," root",[3069,7547,7465],{"class":6059},[3069,7549,7342],{"class":3106},[3069,7551,3818],{"class":3093},[3069,7553,7555,7558,7560,7563],{"class":3071,"line":7554},31,[3069,7556,7557],{"class":3667},"    FillChildren",[3069,7559,4288],{"class":3093},[3069,7561,7562],{"class":3106},"root",[3069,7564,3711],{"class":3093},[3069,7566,7568],{"class":3071,"line":7567},32,[3069,7569,7570],{"class":3086},"// Результат: roots — список кореневих з вкладеними дітьми на всіх рівнях\n",[3069,7572,7574],{"class":3071,"line":7573},33,[3069,7575,7576],{"class":3086},"// SQL: ONE single SELECT без JOIN\n",[2965,7578,7579,7580,7583],{},"Цей підхід генерує ",[2978,7581,7582],{},"один"," SQL-запит незалежно від глибини ієрархії. Недолік: всі записи таблиці завантажуються в пам'ять. Прийнятно для таблиць до ~50,000 рядків.",[3327,7585,7587],{"id":7586},"cte-with-recursive-рекурсивний-sql","CTE WITH RECURSIVE: рекурсивний SQL",[2965,7589,7590,7591,7594],{},"Коли таблиця категорій велика і потрібна лише гілка дерева починаючи з певного вузла — Raw SQL з ",[3033,7592,7593],{},"WITH RECURSIVE"," є оптимальним рішенням:",[3060,7596,7598],{"className":3062,"code":7597,"language":3064,"meta":3065,"style":3065},"// PostgreSQL / SQLite синтаксис CTE\nvar subtree = await context.Categories\n    .FromSqlRaw(\"\"\"\n        WITH RECURSIVE category_tree AS (\n            -- Anchor: стартовий вузол (наприклад, Id = 5)\n            SELECT \"Id\", \"Name\", \"ParentCategoryId\", 0 AS \"Depth\"\n            FROM \"Categories\"\n            WHERE \"Id\" = {0}\n\n            UNION ALL\n\n            -- Recursive member: діти кожного знайденого вузла\n            SELECT c.\"Id\", c.\"Name\", c.\"ParentCategoryId\", ct.\"Depth\" + 1\n            FROM \"Categories\" c\n            INNER JOIN category_tree ct ON c.\"ParentCategoryId\" = ct.\"Id\"\n            WHERE ct.\"Depth\" \u003C 10  -- захист від циклів, якщо є\n        )\n        SELECT * FROM category_tree ORDER BY \"Depth\", \"Name\"\n        \"\"\", 5)\n    .AsNoTracking()\n    .ToListAsync();\n",[3033,7599,7600,7605,7622,7634,7639,7644,7649,7654,7659,7663,7668,7672,7677,7682,7687,7692,7697,7702,7707,7719,7727],{"__ignoreMap":3065},[3069,7601,7602],{"class":3071,"line":3072},[3069,7603,7604],{"class":3086},"// PostgreSQL / SQLite синтаксис CTE\n",[3069,7606,7607,7609,7612,7614,7616,7618,7620],{"class":3071,"line":3090},[3069,7608,7030],{"class":3075},[3069,7610,7611],{"class":3106}," subtree",[3069,7613,5879],{"class":3093},[3069,7615,7038],{"class":3075},[3069,7617,7041],{"class":3106},[3069,7619,3044],{"class":3093},[3069,7621,7046],{"class":3106},[3069,7623,7624,7626,7629,7631],{"class":3071,"line":3097},[3069,7625,4489],{"class":3093},[3069,7627,7628],{"class":3667},"FromSqlRaw",[3069,7630,4288],{"class":3093},[3069,7632,7633],{"class":3676},"\"\"\"\n",[3069,7635,7636],{"class":3071,"line":3128},[3069,7637,7638],{"class":3676},"        WITH RECURSIVE category_tree AS (\n",[3069,7640,7641],{"class":3071,"line":3135},[3069,7642,7643],{"class":3676},"            -- Anchor: стартовий вузол (наприклад, Id = 5)\n",[3069,7645,7646],{"class":3071,"line":3178},[3069,7647,7648],{"class":3676},"            SELECT \"Id\", \"Name\", \"ParentCategoryId\", 0 AS \"Depth\"\n",[3069,7650,7651],{"class":3071,"line":3184},[3069,7652,7653],{"class":3676},"            FROM \"Categories\"\n",[3069,7655,7656],{"class":3071,"line":3189},[3069,7657,7658],{"class":3676},"            WHERE \"Id\" = {0}\n",[3069,7660,7661],{"class":3071,"line":3202},[3069,7662,3132],{"emptyLinePlaceholder":3131},[3069,7664,7665],{"class":3071,"line":3207},[3069,7666,7667],{"class":3676},"            UNION ALL\n",[3069,7669,7670],{"class":3071,"line":3227},[3069,7671,3132],{"emptyLinePlaceholder":3131},[3069,7673,7674],{"class":3071,"line":3232},[3069,7675,7676],{"class":3676},"            -- Recursive member: діти кожного знайденого вузла\n",[3069,7678,7679],{"class":3071,"line":3256},[3069,7680,7681],{"class":3676},"            SELECT c.\"Id\", c.\"Name\", c.\"ParentCategoryId\", ct.\"Depth\" + 1\n",[3069,7683,7684],{"class":3071,"line":3284},[3069,7685,7686],{"class":3676},"            FROM \"Categories\" c\n",[3069,7688,7689],{"class":3071,"line":3574},[3069,7690,7691],{"class":3676},"            INNER JOIN category_tree ct ON c.\"ParentCategoryId\" = ct.\"Id\"\n",[3069,7693,7694],{"class":3071,"line":3579},[3069,7695,7696],{"class":3676},"            WHERE ct.\"Depth\" \u003C 10  -- захист від циклів, якщо є\n",[3069,7698,7699],{"class":3071,"line":3585},[3069,7700,7701],{"class":3676},"        )\n",[3069,7703,7704],{"class":3071,"line":3605},[3069,7705,7706],{"class":3676},"        SELECT * FROM category_tree ORDER BY \"Depth\", \"Name\"\n",[3069,7708,7709,7712,7714,7717],{"class":3071,"line":3610},[3069,7710,7711],{"class":3676},"        \"\"\"",[3069,7713,3346],{"class":3093},[3069,7715,7716],{"class":6873},"5",[3069,7718,3818],{"class":3093},[3069,7720,7721,7723,7725],{"class":3071,"line":3616},[3069,7722,4489],{"class":3093},[3069,7724,7206],{"class":3667},[3069,7726,5600],{"class":3093},[3069,7728,7729,7731,7733],{"class":3071,"line":3641},[3069,7730,4489],{"class":3093},[3069,7732,7153],{"class":3667},[3069,7734,5973],{"class":3093},[2965,7736,7737],{},"Для SQL Server синтаксис аналогічний, але з квадратними дужками:",[3060,7739,7741],{"className":3649,"code":7740,"language":3651,"meta":3065,"style":3065},"-- SQL Server варіант\nWITH CategoryTree AS (\n    SELECT [Id], [Name], [ParentCategoryId], 0 AS [Depth]\n    FROM [Categories]\n    WHERE [Id] = @startId\n\n    UNION ALL\n\n    SELECT c.[Id], c.[Name], c.[ParentCategoryId], ct.[Depth] + 1\n    FROM [Categories] c\n    INNER JOIN CategoryTree ct ON c.[ParentCategoryId] = ct.[Id]\n)\nSELECT * FROM CategoryTree ORDER BY [Depth], [Name]\n",[3033,7742,7743,7748,7762,7779,7787,7795,7799,7804,7808,7818,7825,7839,7843],{"__ignoreMap":3065},[3069,7744,7745],{"class":3071,"line":3072},[3069,7746,7747],{"class":3086},"-- SQL Server варіант\n",[3069,7749,7750,7753,7756,7759],{"class":3071,"line":3090},[3069,7751,7752],{"class":3075},"WITH",[3069,7754,7755],{"class":3093}," CategoryTree ",[3069,7757,7758],{"class":3075},"AS",[3069,7760,7761],{"class":3093}," (\n",[3069,7763,7764,7767,7770,7773,7776],{"class":3071,"line":3097},[3069,7765,7766],{"class":3075},"    SELECT",[3069,7768,7769],{"class":3093}," [Id], [Name], [ParentCategoryId], ",[3069,7771,7772],{"class":6873},"0",[3069,7774,7775],{"class":3075}," AS",[3069,7777,7778],{"class":3093}," [Depth]\n",[3069,7780,7781,7784],{"class":3071,"line":3128},[3069,7782,7783],{"class":3075},"    FROM",[3069,7785,7786],{"class":3093}," [Categories]\n",[3069,7788,7789,7792],{"class":3071,"line":3135},[3069,7790,7791],{"class":3075},"    WHERE",[3069,7793,7794],{"class":3093}," [Id] = @startId\n",[3069,7796,7797],{"class":3071,"line":3178},[3069,7798,3132],{"emptyLinePlaceholder":3131},[3069,7800,7801],{"class":3071,"line":3184},[3069,7802,7803],{"class":3075},"    UNION ALL\n",[3069,7805,7806],{"class":3071,"line":3189},[3069,7807,3132],{"emptyLinePlaceholder":3131},[3069,7809,7810,7812,7815],{"class":3071,"line":3202},[3069,7811,7766],{"class":3075},[3069,7813,7814],{"class":3093}," c.[Id], c.[Name], c.[ParentCategoryId], ct.[Depth] + ",[3069,7816,7817],{"class":6873},"1\n",[3069,7819,7820,7822],{"class":3071,"line":3207},[3069,7821,7783],{"class":3075},[3069,7823,7824],{"class":3093}," [Categories] c\n",[3069,7826,7827,7830,7833,7836],{"class":3071,"line":3227},[3069,7828,7829],{"class":3075},"    INNER JOIN",[3069,7831,7832],{"class":3093}," CategoryTree ct ",[3069,7834,7835],{"class":3075},"ON",[3069,7837,7838],{"class":3093}," c.[ParentCategoryId] = ct.[Id]\n",[3069,7840,7841],{"class":3071,"line":3232},[3069,7842,3818],{"class":3093},[3069,7844,7845,7848,7851,7854,7856,7858],{"class":3071,"line":3256},[3069,7846,7847],{"class":3075},"SELECT",[3069,7849,7850],{"class":3093}," * ",[3069,7852,7853],{"class":3075},"FROM",[3069,7855,7755],{"class":3093},[3069,7857,5910],{"class":3075},[3069,7859,7860],{"class":3093}," [Depth], [Name]\n",[2965,7862,7863,7864,7867],{},"CTE виконується повністю ",[2978,7865,7866],{},"на рівні бази даних"," — результат вже відфільтрована і відсортована гілка дерева. Ідеально для великих ієрархій (тисячі вузлів).",[3327,7869,7871],{"id":7870},"приклад-ієрархія-коментарів-threaded-comments","Приклад: ієрархія коментарів (threaded comments)",[2965,7873,7874],{},"Самореферентний зв'язок є природнім для реалізації вкладених коментарів — коментар може бути відповіддю на інший коментар:",[3060,7876,7878],{"className":3062,"code":7877,"language":3064,"meta":3065,"style":3065},"public class Comment\n{\n    public int Id { get; set; }\n    public string Text { get; set; } = string.Empty;\n    public string AuthorName { get; set; } = string.Empty;\n    public DateTime CreatedAt { get; set; }\n\n    // FK до поста (обов'язковий — коментар завжди до конкретного поста)\n    public int PostId { get; set; }\n    public BlogPost Post { get; set; } = null!;\n\n    // FK до батьківського коментаря (nullable — коментар верхнього рівня не має батька)\n    public int? ParentCommentId { get; set; }\n\n    // Навігація до батьківського коментаря\n    public Comment? ParentComment { get; set; }\n\n    // Навігація до відповідей\n    public ICollection\u003CComment> Replies { get; set; } = new List\u003CComment>();\n}\n\npublic class BlogPost\n{\n    public int Id { get; set; }\n    public string Title { get; set; } = string.Empty;\n\n    // Тільки коментарі верхнього рівня або всі?\n    // Рекомендується: все через окремий запит\n    public ICollection\u003CComment> Comments { get; set; } = new List\u003CComment>();\n}\n",[3033,7879,7880,7889,7893,7911,7938,7965,7983,7987,7992,8011,8035,8039,8044,8065,8069,8074,8096,8100,8105,8141,8145,8149,8158,8162,8180,8206,8210,8215,8220,8255],{"__ignoreMap":3065},[3069,7881,7882,7884,7886],{"class":3071,"line":3072},[3069,7883,3076],{"class":3075},[3069,7885,3079],{"class":3075},[3069,7887,7888],{"class":3082}," Comment\n",[3069,7890,7891],{"class":3071,"line":3090},[3069,7892,3094],{"class":3093},[3069,7894,7895,7897,7899,7901,7903,7905,7907,7909],{"class":3071,"line":3097},[3069,7896,3100],{"class":3075},[3069,7898,3103],{"class":3075},[3069,7900,3107],{"class":3106},[3069,7902,3110],{"class":3093},[3069,7904,3113],{"class":3075},[3069,7906,3116],{"class":3093},[3069,7908,3119],{"class":3075},[3069,7910,3224],{"class":3093},[3069,7912,7913,7915,7917,7920,7922,7924,7926,7928,7930,7932,7934,7936],{"class":3071,"line":3128},[3069,7914,3100],{"class":3075},[3069,7916,3897],{"class":3075},[3069,7918,7919],{"class":3106}," Text",[3069,7921,3110],{"class":3093},[3069,7923,3113],{"class":3075},[3069,7925,3116],{"class":3093},[3069,7927,3119],{"class":3075},[3069,7929,3162],{"class":3093},[3069,7931,3913],{"class":3075},[3069,7933,3044],{"class":3093},[3069,7935,3918],{"class":3106},[3069,7937,3921],{"class":3093},[3069,7939,7940,7942,7944,7947,7949,7951,7953,7955,7957,7959,7961,7963],{"class":3071,"line":3135},[3069,7941,3100],{"class":3075},[3069,7943,3897],{"class":3075},[3069,7945,7946],{"class":3106}," AuthorName",[3069,7948,3110],{"class":3093},[3069,7950,3113],{"class":3075},[3069,7952,3116],{"class":3093},[3069,7954,3119],{"class":3075},[3069,7956,3162],{"class":3093},[3069,7958,3913],{"class":3075},[3069,7960,3044],{"class":3093},[3069,7962,3918],{"class":3106},[3069,7964,3921],{"class":3093},[3069,7966,7967,7969,7971,7973,7975,7977,7979,7981],{"class":3071,"line":3178},[3069,7968,3100],{"class":3075},[3069,7970,3435],{"class":3082},[3069,7972,3438],{"class":3106},[3069,7974,3110],{"class":3093},[3069,7976,3113],{"class":3075},[3069,7978,3116],{"class":3093},[3069,7980,3119],{"class":3075},[3069,7982,3224],{"class":3093},[3069,7984,7985],{"class":3071,"line":3184},[3069,7986,3132],{"emptyLinePlaceholder":3131},[3069,7988,7989],{"class":3071,"line":3189},[3069,7990,7991],{"class":3086},"    // FK до поста (обов'язковий — коментар завжди до конкретного поста)\n",[3069,7993,7994,7996,7998,8001,8003,8005,8007,8009],{"class":3071,"line":3202},[3069,7995,3100],{"class":3075},[3069,7997,3103],{"class":3075},[3069,7999,8000],{"class":3106}," PostId",[3069,8002,3110],{"class":3093},[3069,8004,3113],{"class":3075},[3069,8006,3116],{"class":3093},[3069,8008,3119],{"class":3075},[3069,8010,3224],{"class":3093},[3069,8012,8013,8015,8018,8021,8023,8025,8027,8029,8031,8033],{"class":3071,"line":3207},[3069,8014,3100],{"class":3075},[3069,8016,8017],{"class":3082}," BlogPost",[3069,8019,8020],{"class":3106}," Post",[3069,8022,3110],{"class":3093},[3069,8024,3113],{"class":3075},[3069,8026,3116],{"class":3093},[3069,8028,3119],{"class":3075},[3069,8030,3162],{"class":3093},[3069,8032,3275],{"class":3075},[3069,8034,3638],{"class":3093},[3069,8036,8037],{"class":3071,"line":3227},[3069,8038,3132],{"emptyLinePlaceholder":3131},[3069,8040,8041],{"class":3071,"line":3232},[3069,8042,8043],{"class":3086},"    // FK до батьківського коментаря (nullable — коментар верхнього рівня не має батька)\n",[3069,8045,8046,8048,8050,8052,8055,8057,8059,8061,8063],{"class":3071,"line":3256},[3069,8047,3100],{"class":3075},[3069,8049,3103],{"class":3075},[3069,8051,3939],{"class":3093},[3069,8053,8054],{"class":3106},"ParentCommentId",[3069,8056,3110],{"class":3093},[3069,8058,3113],{"class":3075},[3069,8060,3116],{"class":3093},[3069,8062,3119],{"class":3075},[3069,8064,3224],{"class":3093},[3069,8066,8067],{"class":3071,"line":3284},[3069,8068,3132],{"emptyLinePlaceholder":3131},[3069,8070,8071],{"class":3071,"line":3574},[3069,8072,8073],{"class":3086},"    // Навігація до батьківського коментаря\n",[3069,8075,8076,8078,8081,8083,8086,8088,8090,8092,8094],{"class":3071,"line":3579},[3069,8077,3100],{"class":3075},[3069,8079,8080],{"class":3082}," Comment",[3069,8082,3939],{"class":3093},[3069,8084,8085],{"class":3106},"ParentComment",[3069,8087,3110],{"class":3093},[3069,8089,3113],{"class":3075},[3069,8091,3116],{"class":3093},[3069,8093,3119],{"class":3075},[3069,8095,3224],{"class":3093},[3069,8097,8098],{"class":3071,"line":3585},[3069,8099,3132],{"emptyLinePlaceholder":3131},[3069,8101,8102],{"class":3071,"line":3605},[3069,8103,8104],{"class":3086},"    // Навігація до відповідей\n",[3069,8106,8107,8109,8111,8113,8116,8118,8121,8123,8125,8127,8129,8131,8133,8135,8137,8139],{"class":3071,"line":3610},[3069,8108,3100],{"class":3075},[3069,8110,3140],{"class":3082},[3069,8112,3143],{"class":3093},[3069,8114,8115],{"class":3082},"Comment",[3069,8117,3148],{"class":3093},[3069,8119,8120],{"class":3106},"Replies",[3069,8122,3110],{"class":3093},[3069,8124,3113],{"class":3075},[3069,8126,3116],{"class":3093},[3069,8128,3119],{"class":3075},[3069,8130,3162],{"class":3093},[3069,8132,3165],{"class":3075},[3069,8134,3168],{"class":3082},[3069,8136,3143],{"class":3093},[3069,8138,8115],{"class":3082},[3069,8140,3175],{"class":3093},[3069,8142,8143],{"class":3071,"line":3616},[3069,8144,3181],{"class":3093},[3069,8146,8147],{"class":3071,"line":3641},[3069,8148,3132],{"emptyLinePlaceholder":3131},[3069,8150,8151,8153,8155],{"class":3071,"line":7452},[3069,8152,3076],{"class":3075},[3069,8154,3079],{"class":3075},[3069,8156,8157],{"class":3082}," BlogPost\n",[3069,8159,8160],{"class":3071,"line":7472},[3069,8161,3094],{"class":3093},[3069,8163,8164,8166,8168,8170,8172,8174,8176,8178],{"class":3071,"line":7478},[3069,8165,3100],{"class":3075},[3069,8167,3103],{"class":3075},[3069,8169,3107],{"class":3106},[3069,8171,3110],{"class":3093},[3069,8173,3113],{"class":3075},[3069,8175,3116],{"class":3093},[3069,8177,3119],{"class":3075},[3069,8179,3224],{"class":3093},[3069,8181,8182,8184,8186,8188,8190,8192,8194,8196,8198,8200,8202,8204],{"class":3071,"line":7499},[3069,8183,3100],{"class":3075},[3069,8185,3897],{"class":3075},[3069,8187,3900],{"class":3106},[3069,8189,3110],{"class":3093},[3069,8191,3113],{"class":3075},[3069,8193,3116],{"class":3093},[3069,8195,3119],{"class":3075},[3069,8197,3162],{"class":3093},[3069,8199,3913],{"class":3075},[3069,8201,3044],{"class":3093},[3069,8203,3918],{"class":3106},[3069,8205,3921],{"class":3093},[3069,8207,8208],{"class":3071,"line":7514},[3069,8209,3132],{"emptyLinePlaceholder":3131},[3069,8211,8212],{"class":3071,"line":7520},[3069,8213,8214],{"class":3086},"    // Тільки коментарі верхнього рівня або всі?\n",[3069,8216,8217],{"class":3071,"line":7525},[3069,8218,8219],{"class":3086},"    // Рекомендується: все через окремий запит\n",[3069,8221,8222,8224,8226,8228,8230,8232,8235,8237,8239,8241,8243,8245,8247,8249,8251,8253],{"class":3071,"line":7530},[3069,8223,3100],{"class":3075},[3069,8225,3140],{"class":3082},[3069,8227,3143],{"class":3093},[3069,8229,8115],{"class":3082},[3069,8231,3148],{"class":3093},[3069,8233,8234],{"class":3106},"Comments",[3069,8236,3110],{"class":3093},[3069,8238,3113],{"class":3075},[3069,8240,3116],{"class":3093},[3069,8242,3119],{"class":3075},[3069,8244,3162],{"class":3093},[3069,8246,3165],{"class":3075},[3069,8248,3168],{"class":3082},[3069,8250,3143],{"class":3093},[3069,8252,8115],{"class":3082},[3069,8254,3175],{"class":3093},[3069,8256,8257],{"class":3071,"line":7535},[3069,8258,3181],{"class":3093},[2965,8260,8261],{},"Конфігурація:",[3060,8263,8266],{"className":3062,"code":8264,"filename":8265,"language":3064,"meta":3065,"style":3065},"public class CommentConfiguration : IEntityTypeConfiguration\u003CComment>\n{\n    public void Configure(EntityTypeBuilder\u003CComment> builder)\n    {\n        builder.HasKey(c => c.Id);\n\n        builder.Property(c => c.Text)\n               .IsRequired()\n               .HasMaxLength(10000);\n\n        builder.Property(c => c.AuthorName)\n               .IsRequired()\n               .HasMaxLength(200);\n\n        builder.Property(c => c.CreatedAt)\n               .HasDefaultValueSql(\"CURRENT_TIMESTAMP\");\n\n        // Зв'язок Comment → BlogPost (required)\n        builder.HasOne(c => c.Post)\n               .WithMany(p => p.Comments)\n               .HasForeignKey(c => c.PostId)\n               .IsRequired()\n               .OnDelete(DeleteBehavior.Cascade); // видалення поста → видалення всіх коментарів\n\n        // Self-referencing: Comment → ParentComment (optional)\n        builder.HasOne(c => c.ParentComment)\n               .WithMany(c => c.Replies)\n               .HasForeignKey(c => c.ParentCommentId)\n               .IsRequired(false)\n               .OnDelete(DeleteBehavior.Restrict); // не каскад - щоб не видалити ланцюжок\n    }\n}\n","Configurations/CommentConfiguration.cs",[3033,8267,8268,8287,8291,8313,8317,8339,8343,8366,8374,8387,8391,8414,8422,8434,8438,8461,8475,8479,8484,8507,8527,8548,8556,8575,8579,8584,8606,8626,8646,8658,8677,8681],{"__ignoreMap":3065},[3069,8269,8270,8272,8274,8277,8279,8281,8283,8285],{"class":3071,"line":3072},[3069,8271,3076],{"class":3075},[3069,8273,3079],{"class":3075},[3069,8275,8276],{"class":3082}," CommentConfiguration",[3069,8278,4261],{"class":3093},[3069,8280,4264],{"class":3082},[3069,8282,3143],{"class":3093},[3069,8284,8115],{"class":3082},[3069,8286,4271],{"class":3093},[3069,8288,8289],{"class":3071,"line":3090},[3069,8290,3094],{"class":3093},[3069,8292,8293,8295,8297,8299,8301,8303,8305,8307,8309,8311],{"class":3071,"line":3097},[3069,8294,3100],{"class":3075},[3069,8296,4282],{"class":3075},[3069,8298,4285],{"class":3667},[3069,8300,4288],{"class":3093},[3069,8302,4291],{"class":3082},[3069,8304,3143],{"class":3093},[3069,8306,8115],{"class":3082},[3069,8308,3148],{"class":3093},[3069,8310,4300],{"class":3106},[3069,8312,3818],{"class":3093},[3069,8314,8315],{"class":3071,"line":3128},[3069,8316,4307],{"class":3093},[3069,8318,8319,8321,8323,8325,8327,8329,8331,8333,8335,8337],{"class":3071,"line":3135},[3069,8320,6804],{"class":3106},[3069,8322,3044],{"class":3093},[3069,8324,6809],{"class":3667},[3069,8326,4288],{"class":3093},[3069,8328,6814],{"class":3106},[3069,8330,4343],{"class":3093},[3069,8332,6814],{"class":3106},[3069,8334,3044],{"class":3093},[3069,8336,5332],{"class":3106},[3069,8338,3711],{"class":3093},[3069,8340,8341],{"class":3071,"line":3178},[3069,8342,3132],{"emptyLinePlaceholder":3131},[3069,8344,8345,8347,8349,8351,8353,8355,8357,8359,8361,8364],{"class":3071,"line":3184},[3069,8346,6804],{"class":3106},[3069,8348,3044],{"class":3093},[3069,8350,6837],{"class":3667},[3069,8352,4288],{"class":3093},[3069,8354,6814],{"class":3106},[3069,8356,4343],{"class":3093},[3069,8358,6814],{"class":3106},[3069,8360,3044],{"class":3093},[3069,8362,8363],{"class":3106},"Text",[3069,8365,3818],{"class":3093},[3069,8367,8368,8370,8372],{"class":3071,"line":3189},[3069,8369,6857],{"class":3093},[3069,8371,4410],{"class":3667},[3069,8373,5600],{"class":3093},[3069,8375,8376,8378,8380,8382,8385],{"class":3071,"line":3202},[3069,8377,6857],{"class":3093},[3069,8379,6868],{"class":3667},[3069,8381,4288],{"class":3093},[3069,8383,8384],{"class":6873},"10000",[3069,8386,3711],{"class":3093},[3069,8388,8389],{"class":3071,"line":3207},[3069,8390,3132],{"emptyLinePlaceholder":3131},[3069,8392,8393,8395,8397,8399,8401,8403,8405,8407,8409,8412],{"class":3071,"line":3227},[3069,8394,6804],{"class":3106},[3069,8396,3044],{"class":3093},[3069,8398,6837],{"class":3667},[3069,8400,4288],{"class":3093},[3069,8402,6814],{"class":3106},[3069,8404,4343],{"class":3093},[3069,8406,6814],{"class":3106},[3069,8408,3044],{"class":3093},[3069,8410,8411],{"class":3106},"AuthorName",[3069,8413,3818],{"class":3093},[3069,8415,8416,8418,8420],{"class":3071,"line":3232},[3069,8417,6857],{"class":3093},[3069,8419,4410],{"class":3667},[3069,8421,5600],{"class":3093},[3069,8423,8424,8426,8428,8430,8432],{"class":3071,"line":3256},[3069,8425,6857],{"class":3093},[3069,8427,6868],{"class":3667},[3069,8429,4288],{"class":3093},[3069,8431,6874],{"class":6873},[3069,8433,3711],{"class":3093},[3069,8435,8436],{"class":3071,"line":3284},[3069,8437,3132],{"emptyLinePlaceholder":3131},[3069,8439,8440,8442,8444,8446,8448,8450,8452,8454,8456,8459],{"class":3071,"line":3574},[3069,8441,6804],{"class":3106},[3069,8443,3044],{"class":3093},[3069,8445,6837],{"class":3667},[3069,8447,4288],{"class":3093},[3069,8449,6814],{"class":3106},[3069,8451,4343],{"class":3093},[3069,8453,6814],{"class":3106},[3069,8455,3044],{"class":3093},[3069,8457,8458],{"class":3106},"CreatedAt",[3069,8460,3818],{"class":3093},[3069,8462,8463,8465,8468,8470,8473],{"class":3071,"line":3579},[3069,8464,6857],{"class":3093},[3069,8466,8467],{"class":3667},"HasDefaultValueSql",[3069,8469,4288],{"class":3093},[3069,8471,8472],{"class":3676},"\"CURRENT_TIMESTAMP\"",[3069,8474,3711],{"class":3093},[3069,8476,8477],{"class":3071,"line":3585},[3069,8478,3132],{"emptyLinePlaceholder":3131},[3069,8480,8481],{"class":3071,"line":3605},[3069,8482,8483],{"class":3086},"        // Зв'язок Comment → BlogPost (required)\n",[3069,8485,8486,8488,8490,8492,8494,8496,8498,8500,8502,8505],{"class":3071,"line":3610},[3069,8487,6804],{"class":3106},[3069,8489,3044],{"class":3093},[3069,8491,4335],{"class":3667},[3069,8493,4288],{"class":3093},[3069,8495,6814],{"class":3106},[3069,8497,4343],{"class":3093},[3069,8499,6814],{"class":3106},[3069,8501,3044],{"class":3093},[3069,8503,8504],{"class":3106},"Post",[3069,8506,3818],{"class":3093},[3069,8508,8509,8511,8513,8515,8517,8519,8521,8523,8525],{"class":3071,"line":3616},[3069,8510,6857],{"class":3093},[3069,8512,4362],{"class":3667},[3069,8514,4288],{"class":3093},[3069,8516,2965],{"class":3106},[3069,8518,4343],{"class":3093},[3069,8520,2965],{"class":3106},[3069,8522,3044],{"class":3093},[3069,8524,8234],{"class":3106},[3069,8526,3818],{"class":3093},[3069,8528,8529,8531,8533,8535,8537,8539,8541,8543,8546],{"class":3071,"line":3641},[3069,8530,6857],{"class":3093},[3069,8532,4388],{"class":3667},[3069,8534,4288],{"class":3093},[3069,8536,6814],{"class":3106},[3069,8538,4343],{"class":3093},[3069,8540,6814],{"class":3106},[3069,8542,3044],{"class":3093},[3069,8544,8545],{"class":3106},"PostId",[3069,8547,3818],{"class":3093},[3069,8549,8550,8552,8554],{"class":3071,"line":7452},[3069,8551,6857],{"class":3093},[3069,8553,4410],{"class":3667},[3069,8555,5600],{"class":3093},[3069,8557,8558,8560,8562,8564,8566,8568,8570,8572],{"class":3071,"line":7472},[3069,8559,6857],{"class":3093},[3069,8561,4423],{"class":3667},[3069,8563,4288],{"class":3093},[3069,8565,4428],{"class":3106},[3069,8567,3044],{"class":3093},[3069,8569,4433],{"class":3106},[3069,8571,4454],{"class":3093},[3069,8573,8574],{"class":3086},"// видалення поста → видалення всіх коментарів\n",[3069,8576,8577],{"class":3071,"line":7478},[3069,8578,3132],{"emptyLinePlaceholder":3131},[3069,8580,8581],{"class":3071,"line":7499},[3069,8582,8583],{"class":3086},"        // Self-referencing: Comment → ParentComment (optional)\n",[3069,8585,8586,8588,8590,8592,8594,8596,8598,8600,8602,8604],{"class":3071,"line":7514},[3069,8587,6804],{"class":3106},[3069,8589,3044],{"class":3093},[3069,8591,4335],{"class":3667},[3069,8593,4288],{"class":3093},[3069,8595,6814],{"class":3106},[3069,8597,4343],{"class":3093},[3069,8599,6814],{"class":3106},[3069,8601,3044],{"class":3093},[3069,8603,8085],{"class":3106},[3069,8605,3818],{"class":3093},[3069,8607,8608,8610,8612,8614,8616,8618,8620,8622,8624],{"class":3071,"line":7520},[3069,8609,6857],{"class":3093},[3069,8611,4362],{"class":3667},[3069,8613,4288],{"class":3093},[3069,8615,6814],{"class":3106},[3069,8617,4343],{"class":3093},[3069,8619,6814],{"class":3106},[3069,8621,3044],{"class":3093},[3069,8623,8120],{"class":3106},[3069,8625,3818],{"class":3093},[3069,8627,8628,8630,8632,8634,8636,8638,8640,8642,8644],{"class":3071,"line":7525},[3069,8629,6857],{"class":3093},[3069,8631,4388],{"class":3667},[3069,8633,4288],{"class":3093},[3069,8635,6814],{"class":3106},[3069,8637,4343],{"class":3093},[3069,8639,6814],{"class":3106},[3069,8641,3044],{"class":3093},[3069,8643,8054],{"class":3106},[3069,8645,3818],{"class":3093},[3069,8647,8648,8650,8652,8654,8656],{"class":3071,"line":7530},[3069,8649,6857],{"class":3093},[3069,8651,4410],{"class":3667},[3069,8653,4288],{"class":3093},[3069,8655,6967],{"class":3075},[3069,8657,3818],{"class":3093},[3069,8659,8660,8662,8664,8666,8668,8670,8672,8674],{"class":3071,"line":7535},[3069,8661,6857],{"class":3093},[3069,8663,4423],{"class":3667},[3069,8665,4288],{"class":3093},[3069,8667,4428],{"class":3106},[3069,8669,3044],{"class":3093},[3069,8671,4238],{"class":3106},[3069,8673,4454],{"class":3093},[3069,8675,8676],{"class":3086},"// не каскад - щоб не видалити ланцюжок\n",[3069,8678,8679],{"class":3071,"line":7554},[3069,8680,4462],{"class":3093},[3069,8682,8683],{"class":3071,"line":7567},[3069,8684,3181],{"class":3093},[2965,8686,8687],{},"Завантаження дворівневого дерева коментарів для поста:",[3060,8689,8691],{"className":3062,"code":8690,"language":3064,"meta":3065,"style":3065},"// Варіант 1: ThenInclude до 2-3 рівнів\nvar postWithComments = await context.BlogPosts\n    .Where(p => p.Slug == \"my-post\")\n    .Include(p => p.Comments.Where(c => c.ParentCommentId == null)) // тільки root коментарі\n        .ThenInclude(c => c.Replies)         // перший рівень відповідей\n            .ThenInclude(c => c.Replies)     // другий рівень відповідей\n    .FirstAsync();\n\n// Варіант 2: один запит, збірка дерева в пам'яті (краще для глибоких дерев)\nvar allComments = await context.Comments\n    .Where(c => c.PostId == postId)\n    .OrderBy(c => c.CreatedAt)\n    .AsNoTracking()\n    .ToListAsync();\n\n// Групуємо відповіді за батьківським Id\nvar repliesByParent = allComments\n    .Where(c => c.ParentCommentId.HasValue)\n    .GroupBy(c => c.ParentCommentId!.Value)\n    .ToDictionary(g => g.Key, g => g.OrderBy(c => c.CreatedAt).ToList());\n\n// Кореневі коментарі (без батька для цього поста)\nvar rootComments = allComments\n    .Where(c => c.ParentCommentId == null)\n    .OrderBy(c => c.CreatedAt)\n    .ToList();\n\n// Рекурсивна збірка\nvoid AttachReplies(Comment comment)\n{\n    if (repliesByParent.TryGetValue(comment.Id, out var replies))\n    {\n        foreach (var reply in replies)\n        {\n            comment.Replies.Add(reply);\n            AttachReplies(reply);\n        }\n    }\n}\n\nforeach (var root in rootComments)\n    AttachReplies(root);\n",[3033,8692,8693,8698,8716,8742,8786,8810,8833,8842,8846,8851,8869,8894,8915,8923,8931,8935,8940,8952,8976,9000,9049,9053,9058,9069,9093,9113,9121,9125,9130,9146,9150,9183,9187,9204,9209,9230,9242,9247,9252,9257,9262,9279],{"__ignoreMap":3065},[3069,8694,8695],{"class":3071,"line":3072},[3069,8696,8697],{"class":3086},"// Варіант 1: ThenInclude до 2-3 рівнів\n",[3069,8699,8700,8702,8705,8707,8709,8711,8713],{"class":3071,"line":3090},[3069,8701,7030],{"class":3075},[3069,8703,8704],{"class":3106}," postWithComments",[3069,8706,5879],{"class":3093},[3069,8708,7038],{"class":3075},[3069,8710,7041],{"class":3106},[3069,8712,3044],{"class":3093},[3069,8714,8715],{"class":3106},"BlogPosts\n",[3069,8717,8718,8720,8722,8724,8726,8728,8730,8732,8735,8737,8740],{"class":3071,"line":3097},[3069,8719,4489],{"class":3093},[3069,8721,7053],{"class":3667},[3069,8723,4288],{"class":3093},[3069,8725,2965],{"class":3106},[3069,8727,4343],{"class":3093},[3069,8729,2965],{"class":3106},[3069,8731,3044],{"class":3093},[3069,8733,8734],{"class":3106},"Slug",[3069,8736,6086],{"class":3093},[3069,8738,8739],{"class":3676},"\"my-post\"",[3069,8741,3818],{"class":3093},[3069,8743,8744,8746,8748,8750,8752,8754,8756,8758,8760,8762,8764,8766,8768,8770,8772,8774,8776,8778,8780,8783],{"class":3071,"line":3128},[3069,8745,4489],{"class":3093},[3069,8747,7081],{"class":3667},[3069,8749,4288],{"class":3093},[3069,8751,2965],{"class":3106},[3069,8753,4343],{"class":3093},[3069,8755,2965],{"class":3106},[3069,8757,3044],{"class":3093},[3069,8759,8234],{"class":3106},[3069,8761,3044],{"class":3093},[3069,8763,7053],{"class":3667},[3069,8765,4288],{"class":3093},[3069,8767,6814],{"class":3106},[3069,8769,4343],{"class":3093},[3069,8771,6814],{"class":3106},[3069,8773,3044],{"class":3093},[3069,8775,8054],{"class":3106},[3069,8777,6086],{"class":3093},[3069,8779,3275],{"class":3075},[3069,8781,8782],{"class":3093},")) ",[3069,8784,8785],{"class":3086},"// тільки root коментарі\n",[3069,8787,8788,8790,8792,8794,8796,8798,8800,8802,8804,8807],{"class":3071,"line":3135},[3069,8789,7103],{"class":3093},[3069,8791,7106],{"class":3667},[3069,8793,4288],{"class":3093},[3069,8795,6814],{"class":3106},[3069,8797,4343],{"class":3093},[3069,8799,6814],{"class":3106},[3069,8801,3044],{"class":3093},[3069,8803,8120],{"class":3106},[3069,8805,8806],{"class":3093},")         ",[3069,8808,8809],{"class":3086},"// перший рівень відповідей\n",[3069,8811,8812,8814,8816,8818,8820,8822,8824,8826,8828,8830],{"class":3071,"line":3178},[3069,8813,4332],{"class":3093},[3069,8815,7106],{"class":3667},[3069,8817,4288],{"class":3093},[3069,8819,6814],{"class":3106},[3069,8821,4343],{"class":3093},[3069,8823,6814],{"class":3106},[3069,8825,3044],{"class":3093},[3069,8827,8120],{"class":3106},[3069,8829,6910],{"class":3093},[3069,8831,8832],{"class":3086},"// другий рівень відповідей\n",[3069,8834,8835,8837,8840],{"class":3071,"line":3184},[3069,8836,4489],{"class":3093},[3069,8838,8839],{"class":3667},"FirstAsync",[3069,8841,5973],{"class":3093},[3069,8843,8844],{"class":3071,"line":3189},[3069,8845,3132],{"emptyLinePlaceholder":3131},[3069,8847,8848],{"class":3071,"line":3202},[3069,8849,8850],{"class":3086},"// Варіант 2: один запит, збірка дерева в пам'яті (краще для глибоких дерев)\n",[3069,8852,8853,8855,8858,8860,8862,8864,8866],{"class":3071,"line":3207},[3069,8854,7030],{"class":3075},[3069,8856,8857],{"class":3106}," allComments",[3069,8859,5879],{"class":3093},[3069,8861,7038],{"class":3075},[3069,8863,7041],{"class":3106},[3069,8865,3044],{"class":3093},[3069,8867,8868],{"class":3106},"Comments\n",[3069,8870,8871,8873,8875,8877,8879,8881,8883,8885,8887,8889,8892],{"class":3071,"line":3227},[3069,8872,4489],{"class":3093},[3069,8874,7053],{"class":3667},[3069,8876,4288],{"class":3093},[3069,8878,6814],{"class":3106},[3069,8880,4343],{"class":3093},[3069,8882,6814],{"class":3106},[3069,8884,3044],{"class":3093},[3069,8886,8545],{"class":3106},[3069,8888,6086],{"class":3093},[3069,8890,8891],{"class":3106},"postId",[3069,8893,3818],{"class":3093},[3069,8895,8896,8898,8901,8903,8905,8907,8909,8911,8913],{"class":3071,"line":3232},[3069,8897,4489],{"class":3093},[3069,8899,8900],{"class":3667},"OrderBy",[3069,8902,4288],{"class":3093},[3069,8904,6814],{"class":3106},[3069,8906,4343],{"class":3093},[3069,8908,6814],{"class":3106},[3069,8910,3044],{"class":3093},[3069,8912,8458],{"class":3106},[3069,8914,3818],{"class":3093},[3069,8916,8917,8919,8921],{"class":3071,"line":3256},[3069,8918,4489],{"class":3093},[3069,8920,7206],{"class":3667},[3069,8922,5600],{"class":3093},[3069,8924,8925,8927,8929],{"class":3071,"line":3284},[3069,8926,4489],{"class":3093},[3069,8928,7153],{"class":3667},[3069,8930,5973],{"class":3093},[3069,8932,8933],{"class":3071,"line":3574},[3069,8934,3132],{"emptyLinePlaceholder":3131},[3069,8936,8937],{"class":3071,"line":3579},[3069,8938,8939],{"class":3086},"// Групуємо відповіді за батьківським Id\n",[3069,8941,8942,8944,8947,8949],{"class":3071,"line":3585},[3069,8943,7030],{"class":3075},[3069,8945,8946],{"class":3106}," repliesByParent",[3069,8948,5879],{"class":3093},[3069,8950,8951],{"class":3106},"allComments\n",[3069,8953,8954,8956,8958,8960,8962,8964,8966,8968,8970,8972,8974],{"class":3071,"line":3605},[3069,8955,4489],{"class":3093},[3069,8957,7053],{"class":3667},[3069,8959,4288],{"class":3093},[3069,8961,6814],{"class":3106},[3069,8963,4343],{"class":3093},[3069,8965,6814],{"class":3106},[3069,8967,3044],{"class":3093},[3069,8969,8054],{"class":3106},[3069,8971,3044],{"class":3093},[3069,8973,7260],{"class":3106},[3069,8975,3818],{"class":3093},[3069,8977,8978,8980,8982,8984,8986,8988,8990,8992,8994,8996,8998],{"class":3071,"line":3610},[3069,8979,4489],{"class":3093},[3069,8981,7269],{"class":3667},[3069,8983,4288],{"class":3093},[3069,8985,6814],{"class":3106},[3069,8987,4343],{"class":3093},[3069,8989,6814],{"class":3106},[3069,8991,3044],{"class":3093},[3069,8993,8054],{"class":3106},[3069,8995,7284],{"class":3093},[3069,8997,7287],{"class":3106},[3069,8999,3818],{"class":3093},[3069,9001,9002,9004,9006,9008,9010,9012,9014,9016,9018,9020,9022,9024,9026,9028,9030,9032,9034,9036,9038,9040,9042,9045,9047],{"class":3071,"line":3616},[3069,9003,4489],{"class":3093},[3069,9005,7296],{"class":3667},[3069,9007,4288],{"class":3093},[3069,9009,7301],{"class":3106},[3069,9011,4343],{"class":3093},[3069,9013,7301],{"class":3106},[3069,9015,3044],{"class":3093},[3069,9017,7310],{"class":3106},[3069,9019,3346],{"class":3093},[3069,9021,7301],{"class":3106},[3069,9023,4343],{"class":3093},[3069,9025,7301],{"class":3106},[3069,9027,3044],{"class":3093},[3069,9029,8900],{"class":3667},[3069,9031,4288],{"class":3093},[3069,9033,6814],{"class":3106},[3069,9035,4343],{"class":3093},[3069,9037,6814],{"class":3106},[3069,9039,3044],{"class":3093},[3069,9041,8458],{"class":3106},[3069,9043,9044],{"class":3093},").",[3069,9046,7323],{"class":3667},[3069,9048,7326],{"class":3093},[3069,9050,9051],{"class":3071,"line":3641},[3069,9052,3132],{"emptyLinePlaceholder":3131},[3069,9054,9055],{"class":3071,"line":7452},[3069,9056,9057],{"class":3086},"// Кореневі коментарі (без батька для цього поста)\n",[3069,9059,9060,9062,9065,9067],{"class":3071,"line":7472},[3069,9061,7030],{"class":3075},[3069,9063,9064],{"class":3106}," rootComments",[3069,9066,5879],{"class":3093},[3069,9068,8951],{"class":3106},[3069,9070,9071,9073,9075,9077,9079,9081,9083,9085,9087,9089,9091],{"class":3071,"line":7478},[3069,9072,4489],{"class":3093},[3069,9074,7053],{"class":3667},[3069,9076,4288],{"class":3093},[3069,9078,6814],{"class":3106},[3069,9080,4343],{"class":3093},[3069,9082,6814],{"class":3106},[3069,9084,3044],{"class":3093},[3069,9086,8054],{"class":3106},[3069,9088,6086],{"class":3093},[3069,9090,3275],{"class":3075},[3069,9092,3818],{"class":3093},[3069,9094,9095,9097,9099,9101,9103,9105,9107,9109,9111],{"class":3071,"line":7499},[3069,9096,4489],{"class":3093},[3069,9098,8900],{"class":3667},[3069,9100,4288],{"class":3093},[3069,9102,6814],{"class":3106},[3069,9104,4343],{"class":3093},[3069,9106,6814],{"class":3106},[3069,9108,3044],{"class":3093},[3069,9110,8458],{"class":3106},[3069,9112,3818],{"class":3093},[3069,9114,9115,9117,9119],{"class":3071,"line":7514},[3069,9116,4489],{"class":3093},[3069,9118,7323],{"class":3667},[3069,9120,5973],{"class":3093},[3069,9122,9123],{"class":3071,"line":7520},[3069,9124,3132],{"emptyLinePlaceholder":3131},[3069,9126,9127],{"class":3071,"line":7525},[3069,9128,9129],{"class":3086},"// Рекурсивна збірка\n",[3069,9131,9132,9134,9137,9139,9141,9144],{"class":3071,"line":7530},[3069,9133,7392],{"class":3075},[3069,9135,9136],{"class":3667}," AttachReplies",[3069,9138,4288],{"class":3093},[3069,9140,8115],{"class":3082},[3069,9142,9143],{"class":3106}," comment",[3069,9145,3818],{"class":3093},[3069,9147,9148],{"class":3071,"line":7535},[3069,9149,3094],{"class":3093},[3069,9151,9152,9154,9156,9159,9161,9163,9165,9168,9170,9172,9174,9176,9178,9181],{"class":3071,"line":7554},[3069,9153,7413],{"class":6059},[3069,9155,3342],{"class":3093},[3069,9157,9158],{"class":3106},"repliesByParent",[3069,9160,3044],{"class":3093},[3069,9162,7423],{"class":3667},[3069,9164,4288],{"class":3093},[3069,9166,9167],{"class":3106},"comment",[3069,9169,3044],{"class":3093},[3069,9171,5332],{"class":3106},[3069,9173,3346],{"class":3093},[3069,9175,7437],{"class":3075},[3069,9177,7440],{"class":3075},[3069,9179,9180],{"class":3106}," replies",[3069,9182,6095],{"class":3093},[3069,9184,9185],{"class":3071,"line":7567},[3069,9186,4307],{"class":3093},[3069,9188,9189,9191,9193,9195,9198,9200,9202],{"class":3071,"line":7573},[3069,9190,7455],{"class":6059},[3069,9192,3342],{"class":3093},[3069,9194,7030],{"class":3075},[3069,9196,9197],{"class":3106}," reply",[3069,9199,7465],{"class":6059},[3069,9201,9180],{"class":3106},[3069,9203,3818],{"class":3093},[3069,9205,9207],{"class":3071,"line":9206},34,[3069,9208,7475],{"class":3093},[3069,9210,9212,9215,9217,9219,9221,9223,9225,9228],{"class":3071,"line":9211},35,[3069,9213,9214],{"class":3106},"            comment",[3069,9216,3044],{"class":3093},[3069,9218,8120],{"class":3106},[3069,9220,3044],{"class":3093},[3069,9222,5914],{"class":3667},[3069,9224,4288],{"class":3093},[3069,9226,9227],{"class":3106},"reply",[3069,9229,3711],{"class":3093},[3069,9231,9233,9236,9238,9240],{"class":3071,"line":9232},36,[3069,9234,9235],{"class":3667},"            AttachReplies",[3069,9237,4288],{"class":3093},[3069,9239,9227],{"class":3106},[3069,9241,3711],{"class":3093},[3069,9243,9245],{"class":3071,"line":9244},37,[3069,9246,7517],{"class":3093},[3069,9248,9250],{"class":3071,"line":9249},38,[3069,9251,4462],{"class":3093},[3069,9253,9255],{"class":3071,"line":9254},39,[3069,9256,3181],{"class":3093},[3069,9258,9260],{"class":3071,"line":9259},40,[3069,9261,3132],{"emptyLinePlaceholder":3131},[3069,9263,9265,9267,9269,9271,9273,9275,9277],{"class":3071,"line":9264},41,[3069,9266,7538],{"class":6059},[3069,9268,3342],{"class":3093},[3069,9270,7030],{"class":3075},[3069,9272,7545],{"class":3106},[3069,9274,7465],{"class":6059},[3069,9276,9064],{"class":3106},[3069,9278,3818],{"class":3093},[3069,9280,9282,9285,9287,9289],{"class":3071,"line":9281},42,[3069,9283,9284],{"class":3667},"    AttachReplies",[3069,9286,4288],{"class":3093},[3069,9288,7562],{"class":3106},[3069,9290,3711],{"class":3093},[2965,9292,9293],{},"Видалення коментаря з відповідями (оскільки Restrict, треба власноруч):",[3060,9295,9297],{"className":3062,"code":9296,"language":3064,"meta":3065,"style":3065},"// Видалення коментаря і всіх його відповідей знизу вгору\npublic async Task DeleteCommentTreeAsync(int commentId)\n{\n    // Завантажуємо всі відповіді рекурсивно\n    var toDelete = new List\u003CComment>();\n\n    async Task CollectReplies(int parentId)\n    {\n        var replies = await context.Comments\n            .Where(c => c.ParentCommentId == parentId)\n            .ToListAsync();\n\n        foreach (var reply in replies)\n        {\n            await CollectReplies(reply.Id); // спочатку глибші рівні\n            toDelete.Add(reply);\n        }\n    }\n\n    await CollectReplies(commentId);\n\n    // Додаємо сам коментар\n    var comment = await context.Comments.FindAsync(commentId);\n    if (comment is not null) toDelete.Add(comment);\n\n    // Видаляємо від листків до кореня (щоб не порушити FK Restrict)\n    context.Comments.RemoveRange(toDelete);\n    await context.SaveChangesAsync();\n}\n",[3033,9298,9299,9304,9327,9331,9336,9356,9360,9379,9383,9400,9425,9433,9437,9453,9457,9477,9492,9496,9500,9504,9518,9522,9527,9554,9586,9590,9595,9615,9628],{"__ignoreMap":3065},[3069,9300,9301],{"class":3071,"line":3072},[3069,9302,9303],{"class":3086},"// Видалення коментаря і всіх його відповідей знизу вгору\n",[3069,9305,9306,9308,9311,9314,9317,9319,9322,9325],{"class":3071,"line":3090},[3069,9307,3076],{"class":3075},[3069,9309,9310],{"class":3075}," async",[3069,9312,9313],{"class":3082}," Task",[3069,9315,9316],{"class":3667}," DeleteCommentTreeAsync",[3069,9318,4288],{"class":3093},[3069,9320,9321],{"class":3075},"int",[3069,9323,9324],{"class":3106}," commentId",[3069,9326,3818],{"class":3093},[3069,9328,9329],{"class":3071,"line":3097},[3069,9330,3094],{"class":3093},[3069,9332,9333],{"class":3071,"line":3128},[3069,9334,9335],{"class":3086},"    // Завантажуємо всі відповіді рекурсивно\n",[3069,9337,9338,9341,9344,9346,9348,9350,9352,9354],{"class":3071,"line":3135},[3069,9339,9340],{"class":3075},"    var",[3069,9342,9343],{"class":3106}," toDelete",[3069,9345,5879],{"class":3093},[3069,9347,3165],{"class":3075},[3069,9349,3168],{"class":3082},[3069,9351,3143],{"class":3093},[3069,9353,8115],{"class":3082},[3069,9355,3175],{"class":3093},[3069,9357,9358],{"class":3071,"line":3178},[3069,9359,3132],{"emptyLinePlaceholder":3131},[3069,9361,9362,9365,9367,9370,9372,9374,9377],{"class":3071,"line":3184},[3069,9363,9364],{"class":3075},"    async",[3069,9366,9313],{"class":3082},[3069,9368,9369],{"class":3667}," CollectReplies",[3069,9371,4288],{"class":3093},[3069,9373,9321],{"class":3075},[3069,9375,9376],{"class":3106}," parentId",[3069,9378,3818],{"class":3093},[3069,9380,9381],{"class":3071,"line":3189},[3069,9382,4307],{"class":3093},[3069,9384,9385,9388,9390,9392,9394,9396,9398],{"class":3071,"line":3202},[3069,9386,9387],{"class":3075},"        var",[3069,9389,9180],{"class":3106},[3069,9391,5879],{"class":3093},[3069,9393,7038],{"class":3075},[3069,9395,7041],{"class":3106},[3069,9397,3044],{"class":3093},[3069,9399,8868],{"class":3106},[3069,9401,9402,9404,9406,9408,9410,9412,9414,9416,9418,9420,9423],{"class":3071,"line":3207},[3069,9403,4332],{"class":3093},[3069,9405,7053],{"class":3667},[3069,9407,4288],{"class":3093},[3069,9409,6814],{"class":3106},[3069,9411,4343],{"class":3093},[3069,9413,6814],{"class":3106},[3069,9415,3044],{"class":3093},[3069,9417,8054],{"class":3106},[3069,9419,6086],{"class":3093},[3069,9421,9422],{"class":3106},"parentId",[3069,9424,3818],{"class":3093},[3069,9426,9427,9429,9431],{"class":3071,"line":3227},[3069,9428,4332],{"class":3093},[3069,9430,7153],{"class":3667},[3069,9432,5973],{"class":3093},[3069,9434,9435],{"class":3071,"line":3232},[3069,9436,3132],{"emptyLinePlaceholder":3131},[3069,9438,9439,9441,9443,9445,9447,9449,9451],{"class":3071,"line":3256},[3069,9440,7455],{"class":6059},[3069,9442,3342],{"class":3093},[3069,9444,7030],{"class":3075},[3069,9446,9197],{"class":3106},[3069,9448,7465],{"class":6059},[3069,9450,9180],{"class":3106},[3069,9452,3818],{"class":3093},[3069,9454,9455],{"class":3071,"line":3284},[3069,9456,7475],{"class":3093},[3069,9458,9459,9462,9464,9466,9468,9470,9472,9474],{"class":3071,"line":3574},[3069,9460,9461],{"class":3075},"            await",[3069,9463,9369],{"class":3667},[3069,9465,4288],{"class":3093},[3069,9467,9227],{"class":3106},[3069,9469,3044],{"class":3093},[3069,9471,5332],{"class":3106},[3069,9473,4454],{"class":3093},[3069,9475,9476],{"class":3086},"// спочатку глибші рівні\n",[3069,9478,9479,9482,9484,9486,9488,9490],{"class":3071,"line":3579},[3069,9480,9481],{"class":3106},"            toDelete",[3069,9483,3044],{"class":3093},[3069,9485,5914],{"class":3667},[3069,9487,4288],{"class":3093},[3069,9489,9227],{"class":3106},[3069,9491,3711],{"class":3093},[3069,9493,9494],{"class":3071,"line":3585},[3069,9495,7517],{"class":3093},[3069,9497,9498],{"class":3071,"line":3605},[3069,9499,4462],{"class":3093},[3069,9501,9502],{"class":3071,"line":3610},[3069,9503,3132],{"emptyLinePlaceholder":3131},[3069,9505,9506,9509,9511,9513,9516],{"class":3071,"line":3616},[3069,9507,9508],{"class":3075},"    await",[3069,9510,9369],{"class":3667},[3069,9512,4288],{"class":3093},[3069,9514,9515],{"class":3106},"commentId",[3069,9517,3711],{"class":3093},[3069,9519,9520],{"class":3071,"line":3641},[3069,9521,3132],{"emptyLinePlaceholder":3131},[3069,9523,9524],{"class":3071,"line":7452},[3069,9525,9526],{"class":3086},"    // Додаємо сам коментар\n",[3069,9528,9529,9531,9533,9535,9537,9539,9541,9543,9545,9548,9550,9552],{"class":3071,"line":7472},[3069,9530,9340],{"class":3075},[3069,9532,9143],{"class":3106},[3069,9534,5879],{"class":3093},[3069,9536,7038],{"class":3075},[3069,9538,7041],{"class":3106},[3069,9540,3044],{"class":3093},[3069,9542,8234],{"class":3106},[3069,9544,3044],{"class":3093},[3069,9546,9547],{"class":3667},"FindAsync",[3069,9549,4288],{"class":3093},[3069,9551,9515],{"class":3106},[3069,9553,3711],{"class":3093},[3069,9555,9556,9558,9560,9562,9565,9568,9571,9573,9576,9578,9580,9582,9584],{"class":3071,"line":7478},[3069,9557,7413],{"class":6059},[3069,9559,3342],{"class":3093},[3069,9561,9167],{"class":3106},[3069,9563,9564],{"class":3075}," is",[3069,9566,9567],{"class":3075}," not",[3069,9569,9570],{"class":3075}," null",[3069,9572,3804],{"class":3093},[3069,9574,9575],{"class":3106},"toDelete",[3069,9577,3044],{"class":3093},[3069,9579,5914],{"class":3667},[3069,9581,4288],{"class":3093},[3069,9583,9167],{"class":3106},[3069,9585,3711],{"class":3093},[3069,9587,9588],{"class":3071,"line":7499},[3069,9589,3132],{"emptyLinePlaceholder":3131},[3069,9591,9592],{"class":3071,"line":7514},[3069,9593,9594],{"class":3086},"    // Видаляємо від листків до кореня (щоб не порушити FK Restrict)\n",[3069,9596,9597,9600,9602,9604,9606,9609,9611,9613],{"class":3071,"line":7520},[3069,9598,9599],{"class":3106},"    context",[3069,9601,3044],{"class":3093},[3069,9603,8234],{"class":3106},[3069,9605,3044],{"class":3093},[3069,9607,9608],{"class":3667},"RemoveRange",[3069,9610,4288],{"class":3093},[3069,9612,9575],{"class":3106},[3069,9614,3711],{"class":3093},[3069,9616,9617,9619,9621,9623,9626],{"class":3071,"line":7525},[3069,9618,9508],{"class":3075},[3069,9620,7041],{"class":3106},[3069,9622,3044],{"class":3093},[3069,9624,9625],{"class":3667},"SaveChangesAsync",[3069,9627,5973],{"class":3093},[3069,9629,9630],{"class":3071,"line":7530},[3069,9631,3181],{"class":3093},[4222,9633,9634,9635,9638,9639,9642,9643,9646,9647,9650],{},"Для глибоких ієрархій коментарів розгляньте зберігання ",[2978,9636,9637],{},"шляху"," (Materialized Path патерн): додайте поле ",[3033,9640,9641],{},"Path: string"," зі значенням типу ",[3033,9644,9645],{},"/1/5/12/"," — це дозволяє вибрати всіх нащадків одним ",[3033,9648,9649],{},"WHERE Path LIKE '/1/5/%'"," без рекурсії.",[3327,9652,9654],{"id":9653},"курсорна-пагінація-коментарів","Курсорна пагінація коментарів",[2965,9656,9657,9658,9661,9662,9665,9666,9669],{},"Коли коментарів під постом тисячі — завантажувати їх усі одразу нерозумно. ",[3033,9659,9660],{},"OFFSET","-пагінація (",[3033,9663,9664],{},"Skip(20).Take(10)",") має відомий недолік: при великому зміщенні база все одно «пробігає» пропущені рядки. Для коментарів природніша ",[2978,9667,9668],{},"курсорна пагінація"," (keyset pagination): замість «пропусти N рядків» — «покажи рядки після цього конкретного коментаря».",[2965,9671,9672,9673,9676,9677,5932],{},"Курсором для коментарів зручно використовувати пару ",[3033,9674,9675],{},"(CreatedAt, Id)"," — це дає стабільний порядок навіть при однаковому ",[3033,9678,8458],{},[3060,9680,9682],{"className":3062,"code":9681,"language":3064,"meta":3065,"style":3065},"// Запит першої сторінки кореневих коментарів\npublic record CommentCursor(DateTime CreatedAt, int Id);\n\npublic record CommentsPage(\n    IReadOnlyList\u003CComment> Items,\n    CommentCursor? NextCursor,  // null якщо це остання сторінка\n    bool HasMore);\n\npublic async Task\u003CCommentsPage> GetRootCommentsAsync(\n    int postId,\n    CommentCursor? afterCursor = null,  // null = перша сторінка\n    int pageSize = 20)\n{\n    var query = context.Comments\n        .Where(c => c.PostId == postId && c.ParentCommentId == null)\n        .AsNoTracking();\n\n    // Застосовуємо cursor: беремо коментарі \"після\" відомої точки\n    if (afterCursor is not null)\n    {\n        query = query.Where(c =>\n            c.CreatedAt > afterCursor.CreatedAt ||           // пізніші за датою\n            (c.CreatedAt == afterCursor.CreatedAt && c.Id > afterCursor.Id)); // або в той самий момент, але з більшим Id\n    }\n\n    // Беремо на один більше щоб перевірити: є ще сторінки?\n    var items = await query\n        .OrderBy(c => c.CreatedAt)\n        .ThenBy(c => c.Id)          // стабільне сортування: Id гарантує порядок при однаковому часі\n        .Take(pageSize + 1)\n        .ToListAsync();\n\n    var hasMore = items.Count > pageSize;\n    if (hasMore)\n        items.RemoveAt(items.Count - 1); // прибираємо \"зайвий\" елемент-маркер\n\n    // Наступний cursor — це останній елемент поточної сторінки\n    var nextCursor = hasMore\n        ? new CommentCursor(items[^1].CreatedAt, items[^1].Id)\n        : null;\n\n    return new CommentsPage(items, nextCursor, hasMore);\n}\n",[3033,9683,9684,9689,9714,9718,9730,9745,9760,9770,9774,9794,9804,9822,9836,9840,9856,9893,9901,9905,9910,9926,9930,9951,9975,10016,10020,10024,10029,10043,10063,10088,10108,10116,10120,10143,10154,10182,10186,10191,10203,10240,10249,10253,10277],{"__ignoreMap":3065},[3069,9685,9686],{"class":3071,"line":3072},[3069,9687,9688],{"class":3086},"// Запит першої сторінки кореневих коментарів\n",[3069,9690,9691,9693,9696,9699,9701,9704,9706,9708,9710,9712],{"class":3071,"line":3090},[3069,9692,3076],{"class":3075},[3069,9694,9695],{"class":3075}," record",[3069,9697,9698],{"class":3082}," CommentCursor",[3069,9700,4288],{"class":3093},[3069,9702,9703],{"class":3082},"DateTime",[3069,9705,3438],{"class":3106},[3069,9707,3346],{"class":3093},[3069,9709,9321],{"class":3075},[3069,9711,3107],{"class":3106},[3069,9713,3711],{"class":3093},[3069,9715,9716],{"class":3071,"line":3097},[3069,9717,3132],{"emptyLinePlaceholder":3131},[3069,9719,9720,9722,9724,9727],{"class":3071,"line":3128},[3069,9721,3076],{"class":3075},[3069,9723,9695],{"class":3075},[3069,9725,9726],{"class":3082}," CommentsPage",[3069,9728,9729],{"class":3093},"(\n",[3069,9731,9732,9735,9737,9739,9741,9743],{"class":3071,"line":3135},[3069,9733,9734],{"class":3082},"    IReadOnlyList",[3069,9736,3143],{"class":3093},[3069,9738,8115],{"class":3082},[3069,9740,3148],{"class":3093},[3069,9742,3473],{"class":3106},[3069,9744,3757],{"class":3093},[3069,9746,9747,9750,9752,9755,9757],{"class":3071,"line":3178},[3069,9748,9749],{"class":3082},"    CommentCursor",[3069,9751,3939],{"class":3093},[3069,9753,9754],{"class":3106},"NextCursor",[3069,9756,3780],{"class":3093},[3069,9758,9759],{"class":3086},"// null якщо це остання сторінка\n",[3069,9761,9762,9765,9768],{"class":3071,"line":3184},[3069,9763,9764],{"class":3075},"    bool",[3069,9766,9767],{"class":3106}," HasMore",[3069,9769,3711],{"class":3093},[3069,9771,9772],{"class":3071,"line":3189},[3069,9773,3132],{"emptyLinePlaceholder":3131},[3069,9775,9776,9778,9780,9782,9784,9787,9789,9792],{"class":3071,"line":3202},[3069,9777,3076],{"class":3075},[3069,9779,9310],{"class":3075},[3069,9781,9313],{"class":3082},[3069,9783,3143],{"class":3093},[3069,9785,9786],{"class":3082},"CommentsPage",[3069,9788,3148],{"class":3093},[3069,9790,9791],{"class":3667},"GetRootCommentsAsync",[3069,9793,9729],{"class":3093},[3069,9795,9796,9799,9802],{"class":3071,"line":3207},[3069,9797,9798],{"class":3075},"    int",[3069,9800,9801],{"class":3106}," postId",[3069,9803,3757],{"class":3093},[3069,9805,9806,9808,9810,9813,9815,9817,9819],{"class":3071,"line":3227},[3069,9807,9749],{"class":3082},[3069,9809,3939],{"class":3093},[3069,9811,9812],{"class":3106},"afterCursor",[3069,9814,5879],{"class":3093},[3069,9816,3275],{"class":3075},[3069,9818,3780],{"class":3093},[3069,9820,9821],{"class":3086},"// null = перша сторінка\n",[3069,9823,9824,9826,9829,9831,9834],{"class":3071,"line":3232},[3069,9825,9798],{"class":3075},[3069,9827,9828],{"class":3106}," pageSize",[3069,9830,5879],{"class":3093},[3069,9832,9833],{"class":6873},"20",[3069,9835,3818],{"class":3093},[3069,9837,9838],{"class":3071,"line":3256},[3069,9839,3094],{"class":3093},[3069,9841,9842,9844,9847,9849,9852,9854],{"class":3071,"line":3284},[3069,9843,9340],{"class":3075},[3069,9845,9846],{"class":3106}," query",[3069,9848,5879],{"class":3093},[3069,9850,9851],{"class":3106},"context",[3069,9853,3044],{"class":3093},[3069,9855,8868],{"class":3106},[3069,9857,9858,9860,9862,9864,9866,9868,9870,9872,9874,9876,9878,9881,9883,9885,9887,9889,9891],{"class":3071,"line":3574},[3069,9859,7103],{"class":3093},[3069,9861,7053],{"class":3667},[3069,9863,4288],{"class":3093},[3069,9865,6814],{"class":3106},[3069,9867,4343],{"class":3093},[3069,9869,6814],{"class":3106},[3069,9871,3044],{"class":3093},[3069,9873,8545],{"class":3106},[3069,9875,6086],{"class":3093},[3069,9877,8891],{"class":3106},[3069,9879,9880],{"class":3093}," && ",[3069,9882,6814],{"class":3106},[3069,9884,3044],{"class":3093},[3069,9886,8054],{"class":3106},[3069,9888,6086],{"class":3093},[3069,9890,3275],{"class":3075},[3069,9892,3818],{"class":3093},[3069,9894,9895,9897,9899],{"class":3071,"line":3579},[3069,9896,7103],{"class":3093},[3069,9898,7206],{"class":3667},[3069,9900,5973],{"class":3093},[3069,9902,9903],{"class":3071,"line":3585},[3069,9904,3132],{"emptyLinePlaceholder":3131},[3069,9906,9907],{"class":3071,"line":3605},[3069,9908,9909],{"class":3086},"    // Застосовуємо cursor: беремо коментарі \"після\" відомої точки\n",[3069,9911,9912,9914,9916,9918,9920,9922,9924],{"class":3071,"line":3610},[3069,9913,7413],{"class":6059},[3069,9915,3342],{"class":3093},[3069,9917,9812],{"class":3106},[3069,9919,9564],{"class":3075},[3069,9921,9567],{"class":3075},[3069,9923,9570],{"class":3075},[3069,9925,3818],{"class":3093},[3069,9927,9928],{"class":3071,"line":3616},[3069,9929,4307],{"class":3093},[3069,9931,9932,9935,9937,9940,9942,9944,9946,9948],{"class":3071,"line":3641},[3069,9933,9934],{"class":3106},"        query",[3069,9936,5879],{"class":3093},[3069,9938,9939],{"class":3106},"query",[3069,9941,3044],{"class":3093},[3069,9943,7053],{"class":3667},[3069,9945,4288],{"class":3093},[3069,9947,6814],{"class":3106},[3069,9949,9950],{"class":3093}," =>\n",[3069,9952,9953,9956,9958,9960,9963,9965,9967,9969,9972],{"class":3071,"line":7452},[3069,9954,9955],{"class":3106},"            c",[3069,9957,3044],{"class":3093},[3069,9959,8458],{"class":3106},[3069,9961,9962],{"class":3093}," > ",[3069,9964,9812],{"class":3106},[3069,9966,3044],{"class":3093},[3069,9968,8458],{"class":3106},[3069,9970,9971],{"class":3093}," ||           ",[3069,9973,9974],{"class":3086},"// пізніші за датою\n",[3069,9976,9977,9980,9982,9984,9986,9988,9990,9992,9994,9996,9998,10000,10002,10004,10006,10008,10010,10013],{"class":3071,"line":7472},[3069,9978,9979],{"class":3093},"            (",[3069,9981,6814],{"class":3106},[3069,9983,3044],{"class":3093},[3069,9985,8458],{"class":3106},[3069,9987,6086],{"class":3093},[3069,9989,9812],{"class":3106},[3069,9991,3044],{"class":3093},[3069,9993,8458],{"class":3106},[3069,9995,9880],{"class":3093},[3069,9997,6814],{"class":3106},[3069,9999,3044],{"class":3093},[3069,10001,5332],{"class":3106},[3069,10003,9962],{"class":3093},[3069,10005,9812],{"class":3106},[3069,10007,3044],{"class":3093},[3069,10009,5332],{"class":3106},[3069,10011,10012],{"class":3093},")); ",[3069,10014,10015],{"class":3086},"// або в той самий момент, але з більшим Id\n",[3069,10017,10018],{"class":3071,"line":7478},[3069,10019,4462],{"class":3093},[3069,10021,10022],{"class":3071,"line":7499},[3069,10023,3132],{"emptyLinePlaceholder":3131},[3069,10025,10026],{"class":3071,"line":7514},[3069,10027,10028],{"class":3086},"    // Беремо на один більше щоб перевірити: є ще сторінки?\n",[3069,10030,10031,10033,10036,10038,10040],{"class":3071,"line":7520},[3069,10032,9340],{"class":3075},[3069,10034,10035],{"class":3106}," items",[3069,10037,5879],{"class":3093},[3069,10039,7038],{"class":3075},[3069,10041,10042],{"class":3106}," query\n",[3069,10044,10045,10047,10049,10051,10053,10055,10057,10059,10061],{"class":3071,"line":7525},[3069,10046,7103],{"class":3093},[3069,10048,8900],{"class":3667},[3069,10050,4288],{"class":3093},[3069,10052,6814],{"class":3106},[3069,10054,4343],{"class":3093},[3069,10056,6814],{"class":3106},[3069,10058,3044],{"class":3093},[3069,10060,8458],{"class":3106},[3069,10062,3818],{"class":3093},[3069,10064,10065,10067,10070,10072,10074,10076,10078,10080,10082,10085],{"class":3071,"line":7530},[3069,10066,7103],{"class":3093},[3069,10068,10069],{"class":3667},"ThenBy",[3069,10071,4288],{"class":3093},[3069,10073,6814],{"class":3106},[3069,10075,4343],{"class":3093},[3069,10077,6814],{"class":3106},[3069,10079,3044],{"class":3093},[3069,10081,5332],{"class":3106},[3069,10083,10084],{"class":3093},")          ",[3069,10086,10087],{"class":3086},"// стабільне сортування: Id гарантує порядок при однаковому часі\n",[3069,10089,10090,10092,10095,10097,10100,10103,10106],{"class":3071,"line":7535},[3069,10091,7103],{"class":3093},[3069,10093,10094],{"class":3667},"Take",[3069,10096,4288],{"class":3093},[3069,10098,10099],{"class":3106},"pageSize",[3069,10101,10102],{"class":3093}," + ",[3069,10104,10105],{"class":6873},"1",[3069,10107,3818],{"class":3093},[3069,10109,10110,10112,10114],{"class":3071,"line":7554},[3069,10111,7103],{"class":3093},[3069,10113,7153],{"class":3667},[3069,10115,5973],{"class":3093},[3069,10117,10118],{"class":3071,"line":7567},[3069,10119,3132],{"emptyLinePlaceholder":3131},[3069,10121,10122,10124,10127,10129,10132,10134,10137,10139,10141],{"class":3071,"line":7573},[3069,10123,9340],{"class":3075},[3069,10125,10126],{"class":3106}," hasMore",[3069,10128,5879],{"class":3093},[3069,10130,10131],{"class":3106},"items",[3069,10133,3044],{"class":3093},[3069,10135,10136],{"class":3106},"Count",[3069,10138,9962],{"class":3093},[3069,10140,10099],{"class":3106},[3069,10142,3921],{"class":3093},[3069,10144,10145,10147,10149,10152],{"class":3071,"line":9206},[3069,10146,7413],{"class":6059},[3069,10148,3342],{"class":3093},[3069,10150,10151],{"class":3106},"hasMore",[3069,10153,3818],{"class":3093},[3069,10155,10156,10159,10161,10164,10166,10168,10170,10172,10175,10177,10179],{"class":3071,"line":9211},[3069,10157,10158],{"class":3106},"        items",[3069,10160,3044],{"class":3093},[3069,10162,10163],{"class":3667},"RemoveAt",[3069,10165,4288],{"class":3093},[3069,10167,10131],{"class":3106},[3069,10169,3044],{"class":3093},[3069,10171,10136],{"class":3106},[3069,10173,10174],{"class":3093}," - ",[3069,10176,10105],{"class":6873},[3069,10178,4454],{"class":3093},[3069,10180,10181],{"class":3086},"// прибираємо \"зайвий\" елемент-маркер\n",[3069,10183,10184],{"class":3071,"line":9232},[3069,10185,3132],{"emptyLinePlaceholder":3131},[3069,10187,10188],{"class":3071,"line":9244},[3069,10189,10190],{"class":3086},"    // Наступний cursor — це останній елемент поточної сторінки\n",[3069,10192,10193,10195,10198,10200],{"class":3071,"line":9249},[3069,10194,9340],{"class":3075},[3069,10196,10197],{"class":3106}," nextCursor",[3069,10199,5879],{"class":3093},[3069,10201,10202],{"class":3106},"hasMore\n",[3069,10204,10205,10208,10210,10212,10214,10216,10219,10221,10224,10226,10228,10230,10232,10234,10236,10238],{"class":3071,"line":9254},[3069,10206,10207],{"class":3093},"        ? ",[3069,10209,3165],{"class":3075},[3069,10211,9698],{"class":3082},[3069,10213,4288],{"class":3093},[3069,10215,10131],{"class":3106},[3069,10217,10218],{"class":3093},"[^",[3069,10220,10105],{"class":6873},[3069,10222,10223],{"class":3093},"].",[3069,10225,8458],{"class":3106},[3069,10227,3346],{"class":3093},[3069,10229,10131],{"class":3106},[3069,10231,10218],{"class":3093},[3069,10233,10105],{"class":6873},[3069,10235,10223],{"class":3093},[3069,10237,5332],{"class":3106},[3069,10239,3818],{"class":3093},[3069,10241,10242,10245,10247],{"class":3071,"line":9259},[3069,10243,10244],{"class":3093},"        : ",[3069,10246,3275],{"class":3075},[3069,10248,3921],{"class":3093},[3069,10250,10251],{"class":3071,"line":9264},[3069,10252,3132],{"emptyLinePlaceholder":3131},[3069,10254,10255,10258,10260,10262,10264,10266,10268,10271,10273,10275],{"class":3071,"line":9281},[3069,10256,10257],{"class":6059},"    return",[3069,10259,6103],{"class":3075},[3069,10261,9726],{"class":3082},[3069,10263,4288],{"class":3093},[3069,10265,10131],{"class":3106},[3069,10267,3346],{"class":3093},[3069,10269,10270],{"class":3106},"nextCursor",[3069,10272,3346],{"class":3093},[3069,10274,10151],{"class":3106},[3069,10276,3711],{"class":3093},[3069,10278,10280],{"class":3071,"line":10279},43,[3069,10281,3181],{"class":3093},[2965,10283,10284],{},"Використання в коді (наприклад, у Controller або Service):",[3060,10286,10288],{"className":3062,"code":10287,"language":3064,"meta":3065,"style":3065},"// Перша сторінка\nvar page1 = await GetRootCommentsAsync(postId: 42, pageSize: 20);\n\n// Відображаємо page1.Items\nforeach (var comment in page1.Items)\n    Console.WriteLine($\"[{comment.CreatedAt:HH:mm}] {comment.AuthorName}: {comment.Text}\");\n\n// Якщо є наступна сторінка — зберігаємо cursor для кнопки \"Завантажити ще\"\nif (page1.HasMore)\n{\n    // Друга сторінка: передаємо cursor від першої\n    var page2 = await GetRootCommentsAsync(\n        postId: 42,\n        afterCursor: page1.NextCursor,\n        pageSize: 20);\n}\n",[3033,10289,10290,10295,10329,10333,10338,10358,10423,10427,10432,10449,10453,10458,10473,10484,10499,10510],{"__ignoreMap":3065},[3069,10291,10292],{"class":3071,"line":3072},[3069,10293,10294],{"class":3086},"// Перша сторінка\n",[3069,10296,10297,10299,10302,10304,10306,10309,10311,10313,10316,10319,10321,10323,10325,10327],{"class":3071,"line":3090},[3069,10298,7030],{"class":3075},[3069,10300,10301],{"class":3106}," page1",[3069,10303,5879],{"class":3093},[3069,10305,7038],{"class":3075},[3069,10307,10308],{"class":3667}," GetRootCommentsAsync",[3069,10310,4288],{"class":3093},[3069,10312,8891],{"class":3106},[3069,10314,10315],{"class":3093},": ",[3069,10317,10318],{"class":6873},"42",[3069,10320,3346],{"class":3093},[3069,10322,10099],{"class":3106},[3069,10324,10315],{"class":3093},[3069,10326,9833],{"class":6873},[3069,10328,3711],{"class":3093},[3069,10330,10331],{"class":3071,"line":3097},[3069,10332,3132],{"emptyLinePlaceholder":3131},[3069,10334,10335],{"class":3071,"line":3128},[3069,10336,10337],{"class":3086},"// Відображаємо page1.Items\n",[3069,10339,10340,10342,10344,10346,10348,10350,10352,10354,10356],{"class":3071,"line":3135},[3069,10341,7538],{"class":6059},[3069,10343,3342],{"class":3093},[3069,10345,7030],{"class":3075},[3069,10347,9143],{"class":3106},[3069,10349,7465],{"class":6059},[3069,10351,10301],{"class":3106},[3069,10353,3044],{"class":3093},[3069,10355,3473],{"class":3106},[3069,10357,3818],{"class":3093},[3069,10359,10360,10363,10365,10368,10370,10373,10375,10377,10379,10381,10383,10386,10388,10391,10393,10396,10398,10400,10402,10404,10406,10408,10410,10412,10414,10416,10418,10421],{"class":3071,"line":3178},[3069,10361,10362],{"class":3106},"    Console",[3069,10364,3044],{"class":3093},[3069,10366,10367],{"class":3667},"WriteLine",[3069,10369,4288],{"class":3093},[3069,10371,10372],{"class":3676},"$\"[",[3069,10374,6115],{"class":6114},[3069,10376,9167],{"class":3106},[3069,10378,3044],{"class":6114},[3069,10380,8458],{"class":3106},[3069,10382,5932],{"class":3093},[3069,10384,10385],{"class":3106},"HH",[3069,10387,5932],{"class":3093},[3069,10389,10390],{"class":3106},"mm",[3069,10392,6124],{"class":6114},[3069,10394,10395],{"class":3676},"] ",[3069,10397,6115],{"class":6114},[3069,10399,9167],{"class":3106},[3069,10401,3044],{"class":6114},[3069,10403,8411],{"class":3106},[3069,10405,6124],{"class":6114},[3069,10407,10315],{"class":3676},[3069,10409,6115],{"class":6114},[3069,10411,9167],{"class":3106},[3069,10413,3044],{"class":6114},[3069,10415,8363],{"class":3106},[3069,10417,6124],{"class":6114},[3069,10419,10420],{"class":3676},"\"",[3069,10422,3711],{"class":3093},[3069,10424,10425],{"class":3071,"line":3184},[3069,10426,3132],{"emptyLinePlaceholder":3131},[3069,10428,10429],{"class":3071,"line":3189},[3069,10430,10431],{"class":3086},"// Якщо є наступна сторінка — зберігаємо cursor для кнопки \"Завантажити ще\"\n",[3069,10433,10434,10437,10439,10442,10444,10447],{"class":3071,"line":3202},[3069,10435,10436],{"class":6059},"if",[3069,10438,3342],{"class":3093},[3069,10440,10441],{"class":3106},"page1",[3069,10443,3044],{"class":3093},[3069,10445,10446],{"class":3106},"HasMore",[3069,10448,3818],{"class":3093},[3069,10450,10451],{"class":3071,"line":3207},[3069,10452,3094],{"class":3093},[3069,10454,10455],{"class":3071,"line":3227},[3069,10456,10457],{"class":3086},"    // Друга сторінка: передаємо cursor від першої\n",[3069,10459,10460,10462,10465,10467,10469,10471],{"class":3071,"line":3232},[3069,10461,9340],{"class":3075},[3069,10463,10464],{"class":3106}," page2",[3069,10466,5879],{"class":3093},[3069,10468,7038],{"class":3075},[3069,10470,10308],{"class":3667},[3069,10472,9729],{"class":3093},[3069,10474,10475,10478,10480,10482],{"class":3071,"line":3256},[3069,10476,10477],{"class":3106},"        postId",[3069,10479,10315],{"class":3093},[3069,10481,10318],{"class":6873},[3069,10483,3757],{"class":3093},[3069,10485,10486,10489,10491,10493,10495,10497],{"class":3071,"line":3284},[3069,10487,10488],{"class":3106},"        afterCursor",[3069,10490,10315],{"class":3093},[3069,10492,10441],{"class":3106},[3069,10494,3044],{"class":3093},[3069,10496,9754],{"class":3106},[3069,10498,3757],{"class":3093},[3069,10500,10501,10504,10506,10508],{"class":3071,"line":3574},[3069,10502,10503],{"class":3106},"        pageSize",[3069,10505,10315],{"class":3093},[3069,10507,9833],{"class":6873},[3069,10509,3711],{"class":3093},[3069,10511,10512],{"class":3071,"line":3579},[3069,10513,3181],{"class":3093},[2965,10515,10516],{},"Генерований SQL для другої сторінки виглядає приблизно так:",[3060,10518,10520],{"className":3649,"code":10519,"language":3651,"meta":3065,"style":3065},"-- PostgreSQL\nSELECT c.\"Id\", c.\"Text\", c.\"AuthorName\", c.\"CreatedAt\", c.\"ParentCommentId\"\nFROM \"Comments\" c\nWHERE c.\"PostId\" = 42\n  AND c.\"ParentCommentId\" IS NULL\n  AND (c.\"CreatedAt\" > '2024-03-15 14:23:01'              -- після курсора\n    OR (c.\"CreatedAt\" = '2024-03-15 14:23:01' AND c.\"Id\" > 1047))\nORDER BY c.\"CreatedAt\" ASC, c.\"Id\" ASC\nLIMIT 21;   -- pageSize + 1 для перевірки \"є ще?\"\n",[3033,10521,10522,10527,10557,10567,10582,10598,10615,10642,10660],{"__ignoreMap":3065},[3069,10523,10524],{"class":3071,"line":3072},[3069,10525,10526],{"class":3086},"-- PostgreSQL\n",[3069,10528,10529,10531,10534,10536,10539,10542,10544,10547,10549,10552,10554],{"class":3071,"line":3090},[3069,10530,7847],{"class":3075},[3069,10532,10533],{"class":3093}," c.",[3069,10535,3815],{"class":3676},[3069,10537,10538],{"class":3093},", c.",[3069,10540,10541],{"class":3676},"\"Text\"",[3069,10543,10538],{"class":3093},[3069,10545,10546],{"class":3676},"\"AuthorName\"",[3069,10548,10538],{"class":3093},[3069,10550,10551],{"class":3676},"\"CreatedAt\"",[3069,10553,10538],{"class":3093},[3069,10555,10556],{"class":3676},"\"ParentCommentId\"\n",[3069,10558,10559,10561,10564],{"class":3071,"line":3097},[3069,10560,7853],{"class":3075},[3069,10562,10563],{"class":3676}," \"Comments\"",[3069,10565,10566],{"class":3093}," c\n",[3069,10568,10569,10572,10574,10577,10579],{"class":3071,"line":3128},[3069,10570,10571],{"class":3075},"WHERE",[3069,10573,10533],{"class":3093},[3069,10575,10576],{"class":3676},"\"PostId\"",[3069,10578,5879],{"class":3093},[3069,10580,10581],{"class":6873},"42\n",[3069,10583,10584,10587,10589,10592,10595],{"class":3071,"line":3135},[3069,10585,10586],{"class":3075},"  AND",[3069,10588,10533],{"class":3093},[3069,10590,10591],{"class":3676},"\"ParentCommentId\"",[3069,10593,10594],{"class":3075}," IS",[3069,10596,10597],{"class":3075}," NULL\n",[3069,10599,10600,10602,10605,10607,10609,10612],{"class":3071,"line":3178},[3069,10601,10586],{"class":3075},[3069,10603,10604],{"class":3093}," (c.",[3069,10606,10551],{"class":3676},[3069,10608,9962],{"class":3093},[3069,10610,10611],{"class":3676},"'2024-03-15 14:23:01'",[3069,10613,10614],{"class":3086},"              -- після курсора\n",[3069,10616,10617,10620,10622,10624,10626,10628,10631,10633,10635,10637,10640],{"class":3071,"line":3184},[3069,10618,10619],{"class":3075},"    OR",[3069,10621,10604],{"class":3093},[3069,10623,10551],{"class":3676},[3069,10625,5879],{"class":3093},[3069,10627,10611],{"class":3676},[3069,10629,10630],{"class":3075}," AND",[3069,10632,10533],{"class":3093},[3069,10634,3815],{"class":3676},[3069,10636,9962],{"class":3093},[3069,10638,10639],{"class":6873},"1047",[3069,10641,6095],{"class":3093},[3069,10643,10644,10646,10648,10650,10653,10655,10657],{"class":3071,"line":3189},[3069,10645,5910],{"class":3075},[3069,10647,10533],{"class":3093},[3069,10649,10551],{"class":3676},[3069,10651,10652],{"class":3075}," ASC",[3069,10654,10538],{"class":3093},[3069,10656,3815],{"class":3676},[3069,10658,10659],{"class":3075}," ASC\n",[3069,10661,10662,10665,10668,10671],{"class":3071,"line":3202},[3069,10663,10664],{"class":3075},"LIMIT",[3069,10666,10667],{"class":6873}," 21",[3069,10669,10670],{"class":3093},";   ",[3069,10672,10673],{"class":3086},"-- pageSize + 1 для перевірки \"є ще?\"\n",[2965,10675,10676,10677,10679,10680,10683],{},"Жодного ",[3033,10678,9660],{}," — БД одразу переходить до потрібної точки через ",[2978,10681,10682],{},"індекс",". При мільйоні коментарів перша і мільйонна сторінки завантажуються з однаковою швидкістю.",[2965,10685,10686],{},"Щоб це ефективно працювало, потрібен складений індекс:",[3060,10688,10690],{"className":3062,"code":10689,"filename":8265,"language":3064,"meta":3065,"style":3065},"// Додаємо у Configure():\nbuilder.HasIndex(c => new { c.PostId, c.ParentCommentId, c.CreatedAt, c.Id })\n       .HasDatabaseName(\"IX_Comments_Post_Cursor\");\n// Цей індекс покриває WHERE PostId = ? AND ParentCommentId IS NULL ORDER BY CreatedAt, Id\n",[3033,10691,10692,10697,10749,10763],{"__ignoreMap":3065},[3069,10693,10694],{"class":3071,"line":3072},[3069,10695,10696],{"class":3086},"// Додаємо у Configure():\n",[3069,10698,10699,10701,10703,10706,10708,10710,10712,10714,10716,10718,10720,10722,10724,10726,10728,10730,10732,10734,10736,10738,10740,10742,10744,10746],{"class":3071,"line":3090},[3069,10700,4300],{"class":3106},[3069,10702,3044],{"class":3093},[3069,10704,10705],{"class":3667},"HasIndex",[3069,10707,4288],{"class":3093},[3069,10709,6814],{"class":3106},[3069,10711,4343],{"class":3093},[3069,10713,3165],{"class":3075},[3069,10715,3110],{"class":3093},[3069,10717,6814],{"class":3106},[3069,10719,3044],{"class":3093},[3069,10721,8545],{"class":3106},[3069,10723,3346],{"class":3093},[3069,10725,6814],{"class":3106},[3069,10727,3044],{"class":3093},[3069,10729,8054],{"class":3106},[3069,10731,3346],{"class":3093},[3069,10733,6814],{"class":3106},[3069,10735,3044],{"class":3093},[3069,10737,8458],{"class":3106},[3069,10739,3346],{"class":3093},[3069,10741,6814],{"class":3106},[3069,10743,3044],{"class":3093},[3069,10745,5332],{"class":3106},[3069,10747,10748],{"class":3093}," })\n",[3069,10750,10751,10753,10756,10758,10761],{"class":3071,"line":3097},[3069,10752,6188],{"class":3093},[3069,10754,10755],{"class":3667},"HasDatabaseName",[3069,10757,4288],{"class":3093},[3069,10759,10760],{"class":3676},"\"IX_Comments_Post_Cursor\"",[3069,10762,3711],{"class":3093},[3069,10764,10765],{"class":3071,"line":3128},[3069,10766,10767],{"class":3086},"// Цей індекс покриває WHERE PostId = ? AND ParentCommentId IS NULL ORDER BY CreatedAt, Id\n",[2965,10769,10770,10771,10774,10775,5932],{},"Для ",[2978,10772,10773],{},"відповідей"," (replies) на конкретний коментар — та сама логіка, але фільтруємо по ",[3033,10776,8054],{},[3060,10778,10780],{"className":3062,"code":10779,"language":3064,"meta":3065,"style":3065},"public async Task\u003CCommentsPage> GetRepliesAsync(\n    int parentCommentId,\n    CommentCursor? afterCursor = null,\n    int pageSize = 10)   // відповідей зазвичай менше — менша сторінка\n{\n    var query = context.Comments\n        .Where(c => c.ParentCommentId == parentCommentId)\n        .AsNoTracking();\n\n    if (afterCursor is not null)\n    {\n        query = query.Where(c =>\n            c.CreatedAt > afterCursor.CreatedAt ||\n            (c.CreatedAt == afterCursor.CreatedAt && c.Id > afterCursor.Id));\n    }\n\n    var items = await query\n        .OrderBy(c => c.CreatedAt)\n        .ThenBy(c => c.Id)\n        .Take(pageSize + 1)\n        .ToListAsync();\n\n    var hasMore = items.Count > pageSize;\n    if (hasMore) items.RemoveAt(items.Count - 1);\n\n    return new CommentsPage(\n        items,\n        hasMore ? new CommentCursor(items[^1].CreatedAt, items[^1].Id) : null,\n        hasMore);\n}\n",[3033,10781,10782,10801,10810,10824,10841,10845,10859,10884,10892,10896,10912,10916,10934,10953,10990,10994,10998,11010,11030,11050,11066,11074,11078,11098,11128,11132,11142,11148,11191,11197],{"__ignoreMap":3065},[3069,10783,10784,10786,10788,10790,10792,10794,10796,10799],{"class":3071,"line":3072},[3069,10785,3076],{"class":3075},[3069,10787,9310],{"class":3075},[3069,10789,9313],{"class":3082},[3069,10791,3143],{"class":3093},[3069,10793,9786],{"class":3082},[3069,10795,3148],{"class":3093},[3069,10797,10798],{"class":3667},"GetRepliesAsync",[3069,10800,9729],{"class":3093},[3069,10802,10803,10805,10808],{"class":3071,"line":3090},[3069,10804,9798],{"class":3075},[3069,10806,10807],{"class":3106}," parentCommentId",[3069,10809,3757],{"class":3093},[3069,10811,10812,10814,10816,10818,10820,10822],{"class":3071,"line":3097},[3069,10813,9749],{"class":3082},[3069,10815,3939],{"class":3093},[3069,10817,9812],{"class":3106},[3069,10819,5879],{"class":3093},[3069,10821,3275],{"class":3075},[3069,10823,3757],{"class":3093},[3069,10825,10826,10828,10830,10832,10835,10838],{"class":3071,"line":3128},[3069,10827,9798],{"class":3075},[3069,10829,9828],{"class":3106},[3069,10831,5879],{"class":3093},[3069,10833,10834],{"class":6873},"10",[3069,10836,10837],{"class":3093},")   ",[3069,10839,10840],{"class":3086},"// відповідей зазвичай менше — менша сторінка\n",[3069,10842,10843],{"class":3071,"line":3135},[3069,10844,3094],{"class":3093},[3069,10846,10847,10849,10851,10853,10855,10857],{"class":3071,"line":3178},[3069,10848,9340],{"class":3075},[3069,10850,9846],{"class":3106},[3069,10852,5879],{"class":3093},[3069,10854,9851],{"class":3106},[3069,10856,3044],{"class":3093},[3069,10858,8868],{"class":3106},[3069,10860,10861,10863,10865,10867,10869,10871,10873,10875,10877,10879,10882],{"class":3071,"line":3184},[3069,10862,7103],{"class":3093},[3069,10864,7053],{"class":3667},[3069,10866,4288],{"class":3093},[3069,10868,6814],{"class":3106},[3069,10870,4343],{"class":3093},[3069,10872,6814],{"class":3106},[3069,10874,3044],{"class":3093},[3069,10876,8054],{"class":3106},[3069,10878,6086],{"class":3093},[3069,10880,10881],{"class":3106},"parentCommentId",[3069,10883,3818],{"class":3093},[3069,10885,10886,10888,10890],{"class":3071,"line":3189},[3069,10887,7103],{"class":3093},[3069,10889,7206],{"class":3667},[3069,10891,5973],{"class":3093},[3069,10893,10894],{"class":3071,"line":3202},[3069,10895,3132],{"emptyLinePlaceholder":3131},[3069,10897,10898,10900,10902,10904,10906,10908,10910],{"class":3071,"line":3207},[3069,10899,7413],{"class":6059},[3069,10901,3342],{"class":3093},[3069,10903,9812],{"class":3106},[3069,10905,9564],{"class":3075},[3069,10907,9567],{"class":3075},[3069,10909,9570],{"class":3075},[3069,10911,3818],{"class":3093},[3069,10913,10914],{"class":3071,"line":3227},[3069,10915,4307],{"class":3093},[3069,10917,10918,10920,10922,10924,10926,10928,10930,10932],{"class":3071,"line":3232},[3069,10919,9934],{"class":3106},[3069,10921,5879],{"class":3093},[3069,10923,9939],{"class":3106},[3069,10925,3044],{"class":3093},[3069,10927,7053],{"class":3667},[3069,10929,4288],{"class":3093},[3069,10931,6814],{"class":3106},[3069,10933,9950],{"class":3093},[3069,10935,10936,10938,10940,10942,10944,10946,10948,10950],{"class":3071,"line":3256},[3069,10937,9955],{"class":3106},[3069,10939,3044],{"class":3093},[3069,10941,8458],{"class":3106},[3069,10943,9962],{"class":3093},[3069,10945,9812],{"class":3106},[3069,10947,3044],{"class":3093},[3069,10949,8458],{"class":3106},[3069,10951,10952],{"class":3093}," ||\n",[3069,10954,10955,10957,10959,10961,10963,10965,10967,10969,10971,10973,10975,10977,10979,10981,10983,10985,10987],{"class":3071,"line":3284},[3069,10956,9979],{"class":3093},[3069,10958,6814],{"class":3106},[3069,10960,3044],{"class":3093},[3069,10962,8458],{"class":3106},[3069,10964,6086],{"class":3093},[3069,10966,9812],{"class":3106},[3069,10968,3044],{"class":3093},[3069,10970,8458],{"class":3106},[3069,10972,9880],{"class":3093},[3069,10974,6814],{"class":3106},[3069,10976,3044],{"class":3093},[3069,10978,5332],{"class":3106},[3069,10980,9962],{"class":3093},[3069,10982,9812],{"class":3106},[3069,10984,3044],{"class":3093},[3069,10986,5332],{"class":3106},[3069,10988,10989],{"class":3093},"));\n",[3069,10991,10992],{"class":3071,"line":3574},[3069,10993,4462],{"class":3093},[3069,10995,10996],{"class":3071,"line":3579},[3069,10997,3132],{"emptyLinePlaceholder":3131},[3069,10999,11000,11002,11004,11006,11008],{"class":3071,"line":3585},[3069,11001,9340],{"class":3075},[3069,11003,10035],{"class":3106},[3069,11005,5879],{"class":3093},[3069,11007,7038],{"class":3075},[3069,11009,10042],{"class":3106},[3069,11011,11012,11014,11016,11018,11020,11022,11024,11026,11028],{"class":3071,"line":3605},[3069,11013,7103],{"class":3093},[3069,11015,8900],{"class":3667},[3069,11017,4288],{"class":3093},[3069,11019,6814],{"class":3106},[3069,11021,4343],{"class":3093},[3069,11023,6814],{"class":3106},[3069,11025,3044],{"class":3093},[3069,11027,8458],{"class":3106},[3069,11029,3818],{"class":3093},[3069,11031,11032,11034,11036,11038,11040,11042,11044,11046,11048],{"class":3071,"line":3610},[3069,11033,7103],{"class":3093},[3069,11035,10069],{"class":3667},[3069,11037,4288],{"class":3093},[3069,11039,6814],{"class":3106},[3069,11041,4343],{"class":3093},[3069,11043,6814],{"class":3106},[3069,11045,3044],{"class":3093},[3069,11047,5332],{"class":3106},[3069,11049,3818],{"class":3093},[3069,11051,11052,11054,11056,11058,11060,11062,11064],{"class":3071,"line":3616},[3069,11053,7103],{"class":3093},[3069,11055,10094],{"class":3667},[3069,11057,4288],{"class":3093},[3069,11059,10099],{"class":3106},[3069,11061,10102],{"class":3093},[3069,11063,10105],{"class":6873},[3069,11065,3818],{"class":3093},[3069,11067,11068,11070,11072],{"class":3071,"line":3641},[3069,11069,7103],{"class":3093},[3069,11071,7153],{"class":3667},[3069,11073,5973],{"class":3093},[3069,11075,11076],{"class":3071,"line":7452},[3069,11077,3132],{"emptyLinePlaceholder":3131},[3069,11079,11080,11082,11084,11086,11088,11090,11092,11094,11096],{"class":3071,"line":7472},[3069,11081,9340],{"class":3075},[3069,11083,10126],{"class":3106},[3069,11085,5879],{"class":3093},[3069,11087,10131],{"class":3106},[3069,11089,3044],{"class":3093},[3069,11091,10136],{"class":3106},[3069,11093,9962],{"class":3093},[3069,11095,10099],{"class":3106},[3069,11097,3921],{"class":3093},[3069,11099,11100,11102,11104,11106,11108,11110,11112,11114,11116,11118,11120,11122,11124,11126],{"class":3071,"line":7478},[3069,11101,7413],{"class":6059},[3069,11103,3342],{"class":3093},[3069,11105,10151],{"class":3106},[3069,11107,3804],{"class":3093},[3069,11109,10131],{"class":3106},[3069,11111,3044],{"class":3093},[3069,11113,10163],{"class":3667},[3069,11115,4288],{"class":3093},[3069,11117,10131],{"class":3106},[3069,11119,3044],{"class":3093},[3069,11121,10136],{"class":3106},[3069,11123,10174],{"class":3093},[3069,11125,10105],{"class":6873},[3069,11127,3711],{"class":3093},[3069,11129,11130],{"class":3071,"line":7499},[3069,11131,3132],{"emptyLinePlaceholder":3131},[3069,11133,11134,11136,11138,11140],{"class":3071,"line":7514},[3069,11135,10257],{"class":6059},[3069,11137,6103],{"class":3075},[3069,11139,9726],{"class":3082},[3069,11141,9729],{"class":3093},[3069,11143,11144,11146],{"class":3071,"line":7520},[3069,11145,10158],{"class":3106},[3069,11147,3757],{"class":3093},[3069,11149,11150,11153,11156,11158,11160,11162,11164,11166,11168,11170,11172,11174,11176,11178,11180,11182,11184,11187,11189],{"class":3071,"line":7525},[3069,11151,11152],{"class":3106},"        hasMore",[3069,11154,11155],{"class":3093}," ? ",[3069,11157,3165],{"class":3075},[3069,11159,9698],{"class":3082},[3069,11161,4288],{"class":3093},[3069,11163,10131],{"class":3106},[3069,11165,10218],{"class":3093},[3069,11167,10105],{"class":6873},[3069,11169,10223],{"class":3093},[3069,11171,8458],{"class":3106},[3069,11173,3346],{"class":3093},[3069,11175,10131],{"class":3106},[3069,11177,10218],{"class":3093},[3069,11179,10105],{"class":6873},[3069,11181,10223],{"class":3093},[3069,11183,5332],{"class":3106},[3069,11185,11186],{"class":3093},") : ",[3069,11188,3275],{"class":3075},[3069,11190,3757],{"class":3093},[3069,11192,11193,11195],{"class":3071,"line":7530},[3069,11194,11152],{"class":3106},[3069,11196,3711],{"class":3093},[3069,11198,11199],{"class":3071,"line":7535},[3069,11200,3181],{"class":3093},[2965,11202,11203],{},"Типова інтеграція для REST API — через query parameters:",[3060,11205,11207],{"className":3062,"code":11206,"language":3064,"meta":3065,"style":3065},"// GET /api/posts/42/comments?after_id=1047&after_date=2024-03-15T14:23:01Z&page_size=20\n[HttpGet(\"{postId}/comments\")]\npublic async Task\u003CIActionResult> GetComments(\n    int postId,\n    [FromQuery(Name = \"after_id\")] int? afterId,\n    [FromQuery(Name = \"after_date\")] DateTime? afterDate,\n    [FromQuery(Name = \"page_size\")] int pageSize = 20)\n{\n    CommentCursor? cursor = (afterId.HasValue && afterDate.HasValue)\n        ? new CommentCursor(afterDate.Value, afterId.Value)\n        : null;\n\n    var page = await GetRootCommentsAsync(postId, cursor, Math.Min(pageSize, 100));\n\n    return Ok(new\n    {\n        items    = page.Items.Select(MapToDto),\n        has_more = page.HasMore,\n        // Cursor для наступного запиту — клієнт передає їх назад\n        next_after_id   = page.NextCursor?.Id,\n        next_after_date = page.NextCursor?.CreatedAt\n    });\n}\n",[3033,11208,11209,11214,11230,11250,11258,11287,11313,11340,11344,11372,11398,11406,11410,11452,11456,11468,11472,11498,11513,11518,11539,11557,11562],{"__ignoreMap":3065},[3069,11210,11211],{"class":3071,"line":3072},[3069,11212,11213],{"class":3086},"// GET /api/posts/42/comments?after_id=1047&after_date=2024-03-15T14:23:01Z&page_size=20\n",[3069,11215,11216,11219,11222,11224,11227],{"class":3071,"line":3090},[3069,11217,11218],{"class":3093},"[",[3069,11220,11221],{"class":3082},"HttpGet",[3069,11223,4288],{"class":3093},[3069,11225,11226],{"class":3676},"\"{postId}/comments\"",[3069,11228,11229],{"class":3093},")]\n",[3069,11231,11232,11234,11236,11238,11240,11243,11245,11248],{"class":3071,"line":3097},[3069,11233,3076],{"class":3075},[3069,11235,9310],{"class":3075},[3069,11237,9313],{"class":3082},[3069,11239,3143],{"class":3093},[3069,11241,11242],{"class":3082},"IActionResult",[3069,11244,3148],{"class":3093},[3069,11246,11247],{"class":3667},"GetComments",[3069,11249,9729],{"class":3093},[3069,11251,11252,11254,11256],{"class":3071,"line":3128},[3069,11253,9798],{"class":3075},[3069,11255,9801],{"class":3106},[3069,11257,3757],{"class":3093},[3069,11259,11260,11263,11266,11268,11270,11272,11275,11278,11280,11282,11285],{"class":3071,"line":3135},[3069,11261,11262],{"class":3093},"    [",[3069,11264,11265],{"class":3082},"FromQuery",[3069,11267,4288],{"class":3093},[3069,11269,6850],{"class":3106},[3069,11271,5879],{"class":3093},[3069,11273,11274],{"class":3676},"\"after_id\"",[3069,11276,11277],{"class":3093},")] ",[3069,11279,9321],{"class":3075},[3069,11281,3939],{"class":3093},[3069,11283,11284],{"class":3106},"afterId",[3069,11286,3757],{"class":3093},[3069,11288,11289,11291,11293,11295,11297,11299,11302,11304,11306,11308,11311],{"class":3071,"line":3178},[3069,11290,11262],{"class":3093},[3069,11292,11265],{"class":3082},[3069,11294,4288],{"class":3093},[3069,11296,6850],{"class":3106},[3069,11298,5879],{"class":3093},[3069,11300,11301],{"class":3676},"\"after_date\"",[3069,11303,11277],{"class":3093},[3069,11305,9703],{"class":3082},[3069,11307,3939],{"class":3093},[3069,11309,11310],{"class":3106},"afterDate",[3069,11312,3757],{"class":3093},[3069,11314,11315,11317,11319,11321,11323,11325,11328,11330,11332,11334,11336,11338],{"class":3071,"line":3184},[3069,11316,11262],{"class":3093},[3069,11318,11265],{"class":3082},[3069,11320,4288],{"class":3093},[3069,11322,6850],{"class":3106},[3069,11324,5879],{"class":3093},[3069,11326,11327],{"class":3676},"\"page_size\"",[3069,11329,11277],{"class":3093},[3069,11331,9321],{"class":3075},[3069,11333,9828],{"class":3106},[3069,11335,5879],{"class":3093},[3069,11337,9833],{"class":6873},[3069,11339,3818],{"class":3093},[3069,11341,11342],{"class":3071,"line":3189},[3069,11343,3094],{"class":3093},[3069,11345,11346,11348,11350,11353,11356,11358,11360,11362,11364,11366,11368,11370],{"class":3071,"line":3202},[3069,11347,9749],{"class":3082},[3069,11349,3939],{"class":3093},[3069,11351,11352],{"class":3106},"cursor",[3069,11354,11355],{"class":3093}," = (",[3069,11357,11284],{"class":3106},[3069,11359,3044],{"class":3093},[3069,11361,7260],{"class":3106},[3069,11363,9880],{"class":3093},[3069,11365,11310],{"class":3106},[3069,11367,3044],{"class":3093},[3069,11369,7260],{"class":3106},[3069,11371,3818],{"class":3093},[3069,11373,11374,11376,11378,11380,11382,11384,11386,11388,11390,11392,11394,11396],{"class":3071,"line":3207},[3069,11375,10207],{"class":3093},[3069,11377,3165],{"class":3075},[3069,11379,9698],{"class":3082},[3069,11381,4288],{"class":3093},[3069,11383,11310],{"class":3106},[3069,11385,3044],{"class":3093},[3069,11387,7287],{"class":3106},[3069,11389,3346],{"class":3093},[3069,11391,11284],{"class":3106},[3069,11393,3044],{"class":3093},[3069,11395,7287],{"class":3106},[3069,11397,3818],{"class":3093},[3069,11399,11400,11402,11404],{"class":3071,"line":3227},[3069,11401,10244],{"class":3093},[3069,11403,3275],{"class":3075},[3069,11405,3921],{"class":3093},[3069,11407,11408],{"class":3071,"line":3232},[3069,11409,3132],{"emptyLinePlaceholder":3131},[3069,11411,11412,11414,11417,11419,11421,11423,11425,11427,11429,11431,11433,11436,11438,11441,11443,11445,11447,11450],{"class":3071,"line":3256},[3069,11413,9340],{"class":3075},[3069,11415,11416],{"class":3106}," page",[3069,11418,5879],{"class":3093},[3069,11420,7038],{"class":3075},[3069,11422,10308],{"class":3667},[3069,11424,4288],{"class":3093},[3069,11426,8891],{"class":3106},[3069,11428,3346],{"class":3093},[3069,11430,11352],{"class":3106},[3069,11432,3346],{"class":3093},[3069,11434,11435],{"class":3106},"Math",[3069,11437,3044],{"class":3093},[3069,11439,11440],{"class":3667},"Min",[3069,11442,4288],{"class":3093},[3069,11444,10099],{"class":3106},[3069,11446,3346],{"class":3093},[3069,11448,11449],{"class":6873},"100",[3069,11451,10989],{"class":3093},[3069,11453,11454],{"class":3071,"line":3284},[3069,11455,3132],{"emptyLinePlaceholder":3131},[3069,11457,11458,11460,11463,11465],{"class":3071,"line":3574},[3069,11459,10257],{"class":6059},[3069,11461,11462],{"class":3667}," Ok",[3069,11464,4288],{"class":3093},[3069,11466,11467],{"class":3075},"new\n",[3069,11469,11470],{"class":3071,"line":3579},[3069,11471,4307],{"class":3093},[3069,11473,11474,11476,11479,11482,11484,11486,11488,11491,11493,11496],{"class":3071,"line":3585},[3069,11475,10158],{"class":3106},[3069,11477,11478],{"class":3093},"    = ",[3069,11480,11481],{"class":3106},"page",[3069,11483,3044],{"class":3093},[3069,11485,3473],{"class":3106},[3069,11487,3044],{"class":3093},[3069,11489,11490],{"class":3667},"Select",[3069,11492,4288],{"class":3093},[3069,11494,11495],{"class":3106},"MapToDto",[3069,11497,5395],{"class":3093},[3069,11499,11500,11503,11505,11507,11509,11511],{"class":3071,"line":3605},[3069,11501,11502],{"class":3106},"        has_more",[3069,11504,5879],{"class":3093},[3069,11506,11481],{"class":3106},[3069,11508,3044],{"class":3093},[3069,11510,10446],{"class":3106},[3069,11512,3757],{"class":3093},[3069,11514,11515],{"class":3071,"line":3610},[3069,11516,11517],{"class":3086},"        // Cursor для наступного запиту — клієнт передає їх назад\n",[3069,11519,11520,11523,11526,11528,11530,11532,11535,11537],{"class":3071,"line":3616},[3069,11521,11522],{"class":3106},"        next_after_id",[3069,11524,11525],{"class":3093},"   = ",[3069,11527,11481],{"class":3106},[3069,11529,3044],{"class":3093},[3069,11531,9754],{"class":3106},[3069,11533,11534],{"class":3093},"?.",[3069,11536,5332],{"class":3106},[3069,11538,3757],{"class":3093},[3069,11540,11541,11544,11546,11548,11550,11552,11554],{"class":3071,"line":3641},[3069,11542,11543],{"class":3106},"        next_after_date",[3069,11545,5879],{"class":3093},[3069,11547,11481],{"class":3106},[3069,11549,3044],{"class":3093},[3069,11551,9754],{"class":3106},[3069,11553,11534],{"class":3093},[3069,11555,11556],{"class":3106},"CreatedAt\n",[3069,11558,11559],{"class":3071,"line":7452},[3069,11560,11561],{"class":3093},"    });\n",[3069,11563,11564],{"class":3071,"line":7472},[3069,11565,3181],{"class":3093},[11567,11568,11569,11570,11573],"note",{},"Курсорна пагінація має одне обмеження порівняно з OFFSET: ",[2978,11571,11572],{},"не можна перейти на довільну сторінку"," (наприклад, «сторінка 5 з 20»). Вона підходить для нескінченної прокрутки (infinite scroll) і кнопки «завантажити ще» — саме так і організовані коментарі у більшості соціальних мереж і платформ.",[3327,11575,11577],{"id":11576},"one-to-one-самореферентний","One-to-One самореферентний",[2965,11579,11580],{},"Рідкісний, але зустрічається — наприклад, ланцюжок версій документа, де кожна версія вказує на попередню:",[3060,11582,11584],{"className":3062,"code":11583,"language":3064,"meta":3065,"style":3065},"public class DocumentVersion\n{\n    public int Id { get; set; }\n    public string Content { get; set; } = string.Empty;\n    public int Version { get; set; }\n\n    public int? PreviousVersionId { get; set; }\n    public DocumentVersion? PreviousVersion { get; set; } // Optional One-to-One\n}\n",[3033,11585,11586,11595,11599,11617,11644,11663,11667,11688,11714],{"__ignoreMap":3065},[3069,11587,11588,11590,11592],{"class":3071,"line":3072},[3069,11589,3076],{"class":3075},[3069,11591,3079],{"class":3075},[3069,11593,11594],{"class":3082}," DocumentVersion\n",[3069,11596,11597],{"class":3071,"line":3090},[3069,11598,3094],{"class":3093},[3069,11600,11601,11603,11605,11607,11609,11611,11613,11615],{"class":3071,"line":3097},[3069,11602,3100],{"class":3075},[3069,11604,3103],{"class":3075},[3069,11606,3107],{"class":3106},[3069,11608,3110],{"class":3093},[3069,11610,3113],{"class":3075},[3069,11612,3116],{"class":3093},[3069,11614,3119],{"class":3075},[3069,11616,3224],{"class":3093},[3069,11618,11619,11621,11623,11626,11628,11630,11632,11634,11636,11638,11640,11642],{"class":3071,"line":3128},[3069,11620,3100],{"class":3075},[3069,11622,3897],{"class":3075},[3069,11624,11625],{"class":3106}," Content",[3069,11627,3110],{"class":3093},[3069,11629,3113],{"class":3075},[3069,11631,3116],{"class":3093},[3069,11633,3119],{"class":3075},[3069,11635,3162],{"class":3093},[3069,11637,3913],{"class":3075},[3069,11639,3044],{"class":3093},[3069,11641,3918],{"class":3106},[3069,11643,3921],{"class":3093},[3069,11645,11646,11648,11650,11653,11655,11657,11659,11661],{"class":3071,"line":3135},[3069,11647,3100],{"class":3075},[3069,11649,3103],{"class":3075},[3069,11651,11652],{"class":3106}," Version",[3069,11654,3110],{"class":3093},[3069,11656,3113],{"class":3075},[3069,11658,3116],{"class":3093},[3069,11660,3119],{"class":3075},[3069,11662,3224],{"class":3093},[3069,11664,11665],{"class":3071,"line":3178},[3069,11666,3132],{"emptyLinePlaceholder":3131},[3069,11668,11669,11671,11673,11675,11678,11680,11682,11684,11686],{"class":3071,"line":3184},[3069,11670,3100],{"class":3075},[3069,11672,3103],{"class":3075},[3069,11674,3939],{"class":3093},[3069,11676,11677],{"class":3106},"PreviousVersionId",[3069,11679,3110],{"class":3093},[3069,11681,3113],{"class":3075},[3069,11683,3116],{"class":3093},[3069,11685,3119],{"class":3075},[3069,11687,3224],{"class":3093},[3069,11689,11690,11692,11695,11697,11700,11702,11704,11706,11708,11711],{"class":3071,"line":3189},[3069,11691,3100],{"class":3075},[3069,11693,11694],{"class":3082}," DocumentVersion",[3069,11696,3939],{"class":3093},[3069,11698,11699],{"class":3106},"PreviousVersion",[3069,11701,3110],{"class":3093},[3069,11703,3113],{"class":3075},[3069,11705,3116],{"class":3093},[3069,11707,3119],{"class":3075},[3069,11709,11710],{"class":3093},"; } ",[3069,11712,11713],{"class":3086},"// Optional One-to-One\n",[3069,11715,11716],{"class":3071,"line":3202},[3069,11717,3181],{"class":3093},[3010,11719],{},[2960,11721,11723],{"id":11722},"deletebehavior-повний-розбір-із-прикладами","DeleteBehavior: повний розбір із прикладами",[2965,11725,11726,11727,11729],{},"Ми вже стикались із ",[3033,11728,4428],{}," раніше. Тепер розберемо кожен варіант на конкретних прикладах, щоб чітко розуміти вибір.",[3327,11731,11733],{"id":11732},"сценарій-author-books-required-fk-not-null","Сценарій: Author → Books (Required, FK NOT NULL)",[2965,11735,11736],{},"У цьому зв'язку Book завжди має Author. Що відбудеться, якщо видалити Author?",[2965,11738,11739],{},[2978,11740,11741],{},"DeleteBehavior.Cascade (SQL CASCADE)",[3060,11743,11745],{"className":3062,"code":11744,"language":3064,"meta":3065,"style":3065},".OnDelete(DeleteBehavior.Cascade)\n",[3033,11746,11747],{"__ignoreMap":3065},[3069,11748,11749,11751,11753,11755,11757,11759,11761],{"class":3071,"line":3072},[3069,11750,3044],{"class":3093},[3069,11752,4423],{"class":3667},[3069,11754,4288],{"class":3093},[3069,11756,4428],{"class":3106},[3069,11758,3044],{"class":3093},[3069,11760,4433],{"class":3106},[3069,11762,3818],{"class":3093},[2965,11764,11765,11766,11768,11769,11771,11772,11775,11776,11778,11779,11781],{},"EF Core налаштовує ",[3033,11767,3836],{}," у FK constraint. При видаленні ",[3033,11770,3035],{}," СУБД ",[2978,11773,11774],{},"автоматично"," видаляє всі пов'язані ",[3033,11777,3151],{},". Це відбувається на рівні бази — навіть якщо ",[3033,11780,3151],{}," не завантажені в ChangeTracker.",[3060,11783,11785],{"className":3062,"code":11784,"language":3064,"meta":3065,"style":3065},"// Cascade: Books видаляються автоматично\nvar author = await context.Authors.FindAsync(1);\ncontext.Authors.Remove(author!);\nawait context.SaveChangesAsync(); // Видалить author і всі його books. БД сама дбає.\n",[3033,11786,11787,11792,11819,11839],{"__ignoreMap":3065},[3069,11788,11789],{"class":3071,"line":3072},[3069,11790,11791],{"class":3086},"// Cascade: Books видаляються автоматично\n",[3069,11793,11794,11796,11799,11801,11803,11805,11807,11809,11811,11813,11815,11817],{"class":3071,"line":3090},[3069,11795,7030],{"class":3075},[3069,11797,11798],{"class":3106}," author",[3069,11800,5879],{"class":3093},[3069,11802,7038],{"class":3075},[3069,11804,7041],{"class":3106},[3069,11806,3044],{"class":3093},[3069,11808,4852],{"class":3106},[3069,11810,3044],{"class":3093},[3069,11812,9547],{"class":3667},[3069,11814,4288],{"class":3093},[3069,11816,10105],{"class":6873},[3069,11818,3711],{"class":3093},[3069,11820,11821,11823,11825,11827,11829,11831,11833,11836],{"class":3071,"line":3097},[3069,11822,9851],{"class":3106},[3069,11824,3044],{"class":3093},[3069,11826,4852],{"class":3106},[3069,11828,3044],{"class":3093},[3069,11830,5918],{"class":3667},[3069,11832,4288],{"class":3093},[3069,11834,11835],{"class":3106},"author",[3069,11837,11838],{"class":3093},"!);\n",[3069,11840,11841,11843,11845,11847,11849,11851],{"class":3071,"line":3128},[3069,11842,7038],{"class":3075},[3069,11844,7041],{"class":3106},[3069,11846,3044],{"class":3093},[3069,11848,9625],{"class":3667},[3069,11850,5858],{"class":3093},[3069,11852,11853],{"class":3086},"// Видалить author і всі його books. БД сама дбає.\n",[2965,11855,11856,11859],{},[2978,11857,11858],{},"Використовуйте Cascade для:"," залежних сутностей без власного сенсу існування (OrderItems без Order, Comments без BlogPost).",[2965,11861,11862],{},[2978,11863,11864],{},"DeleteBehavior.Restrict",[3060,11866,11868],{"className":3062,"code":11867,"language":3064,"meta":3065,"style":3065},".OnDelete(DeleteBehavior.Restrict)\n",[3033,11869,11870],{"__ignoreMap":3065},[3069,11871,11872,11874,11876,11878,11880,11882,11884],{"class":3071,"line":3072},[3069,11873,3044],{"class":3093},[3069,11875,4423],{"class":3667},[3069,11877,4288],{"class":3093},[3069,11879,4428],{"class":3106},[3069,11881,3044],{"class":3093},[3069,11883,4238],{"class":3106},[3069,11885,3818],{"class":3093},[2965,11887,11888,11889,11892],{},"Видалення Author ",[2978,11890,11891],{},"заборонено",", якщо є хоча б одна пов'язана Book. База кине FK violation exception.",[3060,11894,11896],{"className":3062,"code":11895,"language":3064,"meta":3065,"style":3065},"var author = await context.Authors\n    .Include(a => a.Books)\n    .FirstAsync(a => a.Id == 1);\n\nif (author.Books.Any())\n{\n    // Треба спочатку видалити або перепризначити всі книги\n    throw new BusinessException(\"Не можна видалити автора з книгами\");\n}\n\ncontext.Authors.Remove(author);\nawait context.SaveChangesAsync();\n",[3033,11897,11898,11915,11935,11959,11963,11982,11986,11991,12008,12012,12016,12034],{"__ignoreMap":3065},[3069,11899,11900,11902,11904,11906,11908,11910,11912],{"class":3071,"line":3072},[3069,11901,7030],{"class":3075},[3069,11903,11798],{"class":3106},[3069,11905,5879],{"class":3093},[3069,11907,7038],{"class":3075},[3069,11909,7041],{"class":3106},[3069,11911,3044],{"class":3093},[3069,11913,11914],{"class":3106},"Authors\n",[3069,11916,11917,11919,11921,11923,11925,11927,11929,11931,11933],{"class":3071,"line":3090},[3069,11918,4489],{"class":3093},[3069,11920,7081],{"class":3667},[3069,11922,4288],{"class":3093},[3069,11924,5554],{"class":3106},[3069,11926,4343],{"class":3093},[3069,11928,5554],{"class":3106},[3069,11930,3044],{"class":3093},[3069,11932,3151],{"class":3106},[3069,11934,3818],{"class":3093},[3069,11936,11937,11939,11941,11943,11945,11947,11949,11951,11953,11955,11957],{"class":3071,"line":3097},[3069,11938,4489],{"class":3093},[3069,11940,8839],{"class":3667},[3069,11942,4288],{"class":3093},[3069,11944,5554],{"class":3106},[3069,11946,4343],{"class":3093},[3069,11948,5554],{"class":3106},[3069,11950,3044],{"class":3093},[3069,11952,5332],{"class":3106},[3069,11954,6086],{"class":3093},[3069,11956,10105],{"class":6873},[3069,11958,3711],{"class":3093},[3069,11960,11961],{"class":3071,"line":3128},[3069,11962,3132],{"emptyLinePlaceholder":3131},[3069,11964,11965,11967,11969,11971,11973,11975,11977,11979],{"class":3071,"line":3135},[3069,11966,10436],{"class":6059},[3069,11968,3342],{"class":3093},[3069,11970,11835],{"class":3106},[3069,11972,3044],{"class":3093},[3069,11974,3151],{"class":3106},[3069,11976,3044],{"class":3093},[3069,11978,6069],{"class":3667},[3069,11980,11981],{"class":3093},"())\n",[3069,11983,11984],{"class":3071,"line":3178},[3069,11985,3094],{"class":3093},[3069,11987,11988],{"class":3071,"line":3184},[3069,11989,11990],{"class":3086},"    // Треба спочатку видалити або перепризначити всі книги\n",[3069,11992,11993,11996,11998,12001,12003,12006],{"class":3071,"line":3189},[3069,11994,11995],{"class":6059},"    throw",[3069,11997,6103],{"class":3075},[3069,11999,12000],{"class":3082}," BusinessException",[3069,12002,4288],{"class":3093},[3069,12004,12005],{"class":3676},"\"Не можна видалити автора з книгами\"",[3069,12007,3711],{"class":3093},[3069,12009,12010],{"class":3071,"line":3202},[3069,12011,3181],{"class":3093},[3069,12013,12014],{"class":3071,"line":3207},[3069,12015,3132],{"emptyLinePlaceholder":3131},[3069,12017,12018,12020,12022,12024,12026,12028,12030,12032],{"class":3071,"line":3227},[3069,12019,9851],{"class":3106},[3069,12021,3044],{"class":3093},[3069,12023,4852],{"class":3106},[3069,12025,3044],{"class":3093},[3069,12027,5918],{"class":3667},[3069,12029,4288],{"class":3093},[3069,12031,11835],{"class":3106},[3069,12033,3711],{"class":3093},[3069,12035,12036,12038,12040,12042,12044],{"class":3071,"line":3232},[3069,12037,7038],{"class":3075},[3069,12039,7041],{"class":3106},[3069,12041,3044],{"class":3093},[3069,12043,9625],{"class":3667},[3069,12045,5973],{"class":3093},[2965,12047,12048,12051],{},[2978,12049,12050],{},"Використовуйте Restrict для:"," бізнес-сутностей, де видалення батька без очищення дочірніх є логічною помилкою (Customer з Orders, Product зі OrderItems).",[2965,12053,12054],{},[2978,12055,12056],{},"DeleteBehavior.SetNull",[3060,12058,12060],{"className":3062,"code":12059,"language":3064,"meta":3065,"style":3065},".OnDelete(DeleteBehavior.SetNull) // Вимагає nullable FK!\n",[3033,12061,12062],{"__ignoreMap":3065},[3069,12063,12064,12066,12068,12070,12072,12074,12076,12078],{"class":3071,"line":3072},[3069,12065,3044],{"class":3093},[3069,12067,4423],{"class":3667},[3069,12069,4288],{"class":3093},[3069,12071,4428],{"class":3106},[3069,12073,3044],{"class":3093},[3069,12075,4234],{"class":3106},[3069,12077,3804],{"class":3093},[3069,12079,12080],{"class":3086},"// Вимагає nullable FK!\n",[2965,12082,12083],{},"При видаленні Principal — FK у Dependent встановлюється в NULL. Дочірні записи залишаються, але вже без батька. Вимагає nullable FK.",[3060,12085,12087],{"className":3062,"code":12086,"language":3064,"meta":3065,"style":3065},"// Book.AuthorId повинен бути int? (nullable)\n// При видаленні Author: Book.AuthorId = NULL\nvar author = await context.Authors.FindAsync(1);\ncontext.Authors.Remove(author!);\nawait context.SaveChangesAsync();\n// SQL: DELETE FROM Authors WHERE Id = 1;\n//      UPDATE Books SET AuthorId = NULL WHERE AuthorId = 1;\n",[3033,12088,12089,12094,12099,12125,12143,12155,12160],{"__ignoreMap":3065},[3069,12090,12091],{"class":3071,"line":3072},[3069,12092,12093],{"class":3086},"// Book.AuthorId повинен бути int? (nullable)\n",[3069,12095,12096],{"class":3071,"line":3090},[3069,12097,12098],{"class":3086},"// При видаленні Author: Book.AuthorId = NULL\n",[3069,12100,12101,12103,12105,12107,12109,12111,12113,12115,12117,12119,12121,12123],{"class":3071,"line":3097},[3069,12102,7030],{"class":3075},[3069,12104,11798],{"class":3106},[3069,12106,5879],{"class":3093},[3069,12108,7038],{"class":3075},[3069,12110,7041],{"class":3106},[3069,12112,3044],{"class":3093},[3069,12114,4852],{"class":3106},[3069,12116,3044],{"class":3093},[3069,12118,9547],{"class":3667},[3069,12120,4288],{"class":3093},[3069,12122,10105],{"class":6873},[3069,12124,3711],{"class":3093},[3069,12126,12127,12129,12131,12133,12135,12137,12139,12141],{"class":3071,"line":3128},[3069,12128,9851],{"class":3106},[3069,12130,3044],{"class":3093},[3069,12132,4852],{"class":3106},[3069,12134,3044],{"class":3093},[3069,12136,5918],{"class":3667},[3069,12138,4288],{"class":3093},[3069,12140,11835],{"class":3106},[3069,12142,11838],{"class":3093},[3069,12144,12145,12147,12149,12151,12153],{"class":3071,"line":3135},[3069,12146,7038],{"class":3075},[3069,12148,7041],{"class":3106},[3069,12150,3044],{"class":3093},[3069,12152,9625],{"class":3667},[3069,12154,5973],{"class":3093},[3069,12156,12157],{"class":3071,"line":3178},[3069,12158,12159],{"class":3086},"// SQL: DELETE FROM Authors WHERE Id = 1;\n",[3069,12161,12162],{"class":3071,"line":3184},[3069,12163,12164],{"class":3086},"//      UPDATE Books SET AuthorId = NULL WHERE AuthorId = 1;\n",[2965,12166,12167,12170],{},[2978,12168,12169],{},"Використовуйте SetNull для:"," необов'язкових зв'язків, де дочірня сутність має сенс без батька (Article без assigned Editor, Product без assigned Category).",[2965,12172,12173],{},[2978,12174,12175],{},"DeleteBehavior.NoAction",[2965,12177,12178,12179,12181,12182,12184,12185,12188],{},"База не виконує жодних дій при видаленні. Якщо є залежні записи — отримаєте FK violation при commit. Відрізняється від ",[3033,12180,4238],{}," моментом перевірки: ",[3033,12183,4238],{}," перевіряє одразу, ",[3033,12186,12187],{},"NoAction"," може відкласти перевірку до кінця транзакції (залежить від СУБД).",[2965,12190,12191],{},[2978,12192,12193],{},"DeleteBehavior.ClientSetNull (дефолт для Optional)",[2965,12195,12196],{},"EF Core обнуляє FK у завантажених і відстежуваних об'єктах, але не задає ON DELETE на рівні БД. Якщо залежні об'єкти не завантажені — FK залишається з попереднім значенням і отримаєте FK violation.",[3060,12198,12200],{"className":3062,"code":12199,"language":3064,"meta":3065,"style":3065},"// ClientSetNull: працює ТІЛЬКИ якщо Books завантажені в ChangeTracker\nvar author = await context.Authors\n    .Include(a => a.Books) // ← критично важливо!\n    .FirstAsync(a => a.Id == 1);\n\ncontext.Authors.Remove(author);\nawait context.SaveChangesAsync();\n// EF Core: book.AuthorId = null для кожного завантаженого book\n// БД: немає ON DELETE → авторська перевірка на стороні клієнта\n",[3033,12201,12202,12207,12223,12246,12270,12274,12292,12304,12309],{"__ignoreMap":3065},[3069,12203,12204],{"class":3071,"line":3072},[3069,12205,12206],{"class":3086},"// ClientSetNull: працює ТІЛЬКИ якщо Books завантажені в ChangeTracker\n",[3069,12208,12209,12211,12213,12215,12217,12219,12221],{"class":3071,"line":3090},[3069,12210,7030],{"class":3075},[3069,12212,11798],{"class":3106},[3069,12214,5879],{"class":3093},[3069,12216,7038],{"class":3075},[3069,12218,7041],{"class":3106},[3069,12220,3044],{"class":3093},[3069,12222,11914],{"class":3106},[3069,12224,12225,12227,12229,12231,12233,12235,12237,12239,12241,12243],{"class":3071,"line":3097},[3069,12226,4489],{"class":3093},[3069,12228,7081],{"class":3667},[3069,12230,4288],{"class":3093},[3069,12232,5554],{"class":3106},[3069,12234,4343],{"class":3093},[3069,12236,5554],{"class":3106},[3069,12238,3044],{"class":3093},[3069,12240,3151],{"class":3106},[3069,12242,3804],{"class":3093},[3069,12244,12245],{"class":3086},"// ← критично важливо!\n",[3069,12247,12248,12250,12252,12254,12256,12258,12260,12262,12264,12266,12268],{"class":3071,"line":3128},[3069,12249,4489],{"class":3093},[3069,12251,8839],{"class":3667},[3069,12253,4288],{"class":3093},[3069,12255,5554],{"class":3106},[3069,12257,4343],{"class":3093},[3069,12259,5554],{"class":3106},[3069,12261,3044],{"class":3093},[3069,12263,5332],{"class":3106},[3069,12265,6086],{"class":3093},[3069,12267,10105],{"class":6873},[3069,12269,3711],{"class":3093},[3069,12271,12272],{"class":3071,"line":3135},[3069,12273,3132],{"emptyLinePlaceholder":3131},[3069,12275,12276,12278,12280,12282,12284,12286,12288,12290],{"class":3071,"line":3178},[3069,12277,9851],{"class":3106},[3069,12279,3044],{"class":3093},[3069,12281,4852],{"class":3106},[3069,12283,3044],{"class":3093},[3069,12285,5918],{"class":3667},[3069,12287,4288],{"class":3093},[3069,12289,11835],{"class":3106},[3069,12291,3711],{"class":3093},[3069,12293,12294,12296,12298,12300,12302],{"class":3071,"line":3184},[3069,12295,7038],{"class":3075},[3069,12297,7041],{"class":3106},[3069,12299,3044],{"class":3093},[3069,12301,9625],{"class":3667},[3069,12303,5973],{"class":3093},[3069,12305,12306],{"class":3071,"line":3189},[3069,12307,12308],{"class":3086},"// EF Core: book.AuthorId = null для кожного завантаженого book\n",[3069,12310,12311],{"class":3071,"line":3202},[3069,12312,12313],{"class":3086},"// БД: немає ON DELETE → авторська перевірка на стороні клієнта\n",[5626,12315,12316,12318,12319,12321,12322,12324,12325,12327],{},[3033,12317,4199],{}," — небезпечна поведінка за замовчуванням для Optional зв'язків. Якщо забудете ",[3033,12320,7010],{}," — отримаєте FK violation або orphaned records. Явно задавайте ",[3033,12323,4234],{}," або ",[3033,12326,4238],{}," замість покладання на дефолт.",[3010,12329],{},[2960,12331,12333],{"id":12332},"ключові-сценарії-конфігурація-по-ситуаціях","Ключові сценарії: конфігурація по ситуаціях",[2965,12335,12336],{},"Зберемо найпоширеніші сценарії у практичний довідник:",[12338,12339,12340,12443,12548,12657],"card-group",{},[12341,12342,12345],"card",{"icon":12343,"title":12344},"i-lucide-message-circle","Блог: пост та коментарі",[3060,12346,12348],{"className":3062,"code":12347,"language":3064,"meta":3065,"style":3065},"// Required One-to-Many: коментар ЗАВЖДИ належить посту\nbuilder.HasOne(c => c.Post)\n       .WithMany(p => p.Comments)\n       .HasForeignKey(c => c.PostId)\n       .IsRequired()\n       .OnDelete(DeleteBehavior.Cascade); // видалення поста → видалення всіх коментарів\n",[3033,12349,12350,12355,12377,12397,12417,12425],{"__ignoreMap":3065},[3069,12351,12352],{"class":3071,"line":3072},[3069,12353,12354],{"class":3086},"// Required One-to-Many: коментар ЗАВЖДИ належить посту\n",[3069,12356,12357,12359,12361,12363,12365,12367,12369,12371,12373,12375],{"class":3071,"line":3090},[3069,12358,4300],{"class":3106},[3069,12360,3044],{"class":3093},[3069,12362,4335],{"class":3667},[3069,12364,4288],{"class":3093},[3069,12366,6814],{"class":3106},[3069,12368,4343],{"class":3093},[3069,12370,6814],{"class":3106},[3069,12372,3044],{"class":3093},[3069,12374,8504],{"class":3106},[3069,12376,3818],{"class":3093},[3069,12378,12379,12381,12383,12385,12387,12389,12391,12393,12395],{"class":3071,"line":3097},[3069,12380,6188],{"class":3093},[3069,12382,4362],{"class":3667},[3069,12384,4288],{"class":3093},[3069,12386,2965],{"class":3106},[3069,12388,4343],{"class":3093},[3069,12390,2965],{"class":3106},[3069,12392,3044],{"class":3093},[3069,12394,8234],{"class":3106},[3069,12396,3818],{"class":3093},[3069,12398,12399,12401,12403,12405,12407,12409,12411,12413,12415],{"class":3071,"line":3128},[3069,12400,6188],{"class":3093},[3069,12402,4388],{"class":3667},[3069,12404,4288],{"class":3093},[3069,12406,6814],{"class":3106},[3069,12408,4343],{"class":3093},[3069,12410,6814],{"class":3106},[3069,12412,3044],{"class":3093},[3069,12414,8545],{"class":3106},[3069,12416,3818],{"class":3093},[3069,12418,12419,12421,12423],{"class":3071,"line":3135},[3069,12420,6188],{"class":3093},[3069,12422,4410],{"class":3667},[3069,12424,5600],{"class":3093},[3069,12426,12427,12429,12431,12433,12435,12437,12439,12441],{"class":3071,"line":3178},[3069,12428,6188],{"class":3093},[3069,12430,4423],{"class":3667},[3069,12432,4288],{"class":3093},[3069,12434,4428],{"class":3106},[3069,12436,3044],{"class":3093},[3069,12438,4433],{"class":3106},[3069,12440,4454],{"class":3093},[3069,12442,8574],{"class":3086},[12341,12444,12447],{"icon":12445,"title":12446},"i-lucide-shopping-cart","Магазин: замовлення та клієнт",[3060,12448,12450],{"className":3062,"code":12449,"language":3064,"meta":3065,"style":3065},"// Required One-to-Many, але без каскаду (клієнт з замовленнями не видаляється)\nbuilder.HasOne(o => o.Customer)\n       .WithMany(c => c.Orders)\n       .HasForeignKey(o => o.CustomerId)\n       .IsRequired()\n       .OnDelete(DeleteBehavior.Restrict); // не можна видалити клієнта з замовленнями\n",[3033,12451,12452,12457,12480,12500,12521,12529],{"__ignoreMap":3065},[3069,12453,12454],{"class":3071,"line":3072},[3069,12455,12456],{"class":3086},"// Required One-to-Many, але без каскаду (клієнт з замовленнями не видаляється)\n",[3069,12458,12459,12461,12463,12465,12467,12470,12472,12474,12476,12478],{"class":3071,"line":3090},[3069,12460,4300],{"class":3106},[3069,12462,3044],{"class":3093},[3069,12464,4335],{"class":3667},[3069,12466,4288],{"class":3093},[3069,12468,12469],{"class":3106},"o",[3069,12471,4343],{"class":3093},[3069,12473,12469],{"class":3106},[3069,12475,3044],{"class":3093},[3069,12477,6435],{"class":3106},[3069,12479,3818],{"class":3093},[3069,12481,12482,12484,12486,12488,12490,12492,12494,12496,12498],{"class":3071,"line":3097},[3069,12483,6188],{"class":3093},[3069,12485,4362],{"class":3667},[3069,12487,4288],{"class":3093},[3069,12489,6814],{"class":3106},[3069,12491,4343],{"class":3093},[3069,12493,6814],{"class":3106},[3069,12495,3044],{"class":3093},[3069,12497,3668],{"class":3106},[3069,12499,3818],{"class":3093},[3069,12501,12502,12504,12506,12508,12510,12512,12514,12516,12519],{"class":3071,"line":3128},[3069,12503,6188],{"class":3093},[3069,12505,4388],{"class":3667},[3069,12507,4288],{"class":3093},[3069,12509,12469],{"class":3106},[3069,12511,4343],{"class":3093},[3069,12513,12469],{"class":3106},[3069,12515,3044],{"class":3093},[3069,12517,12518],{"class":3106},"CustomerId",[3069,12520,3818],{"class":3093},[3069,12522,12523,12525,12527],{"class":3071,"line":3135},[3069,12524,6188],{"class":3093},[3069,12526,4410],{"class":3667},[3069,12528,5600],{"class":3093},[3069,12530,12531,12533,12535,12537,12539,12541,12543,12545],{"class":3071,"line":3178},[3069,12532,6188],{"class":3093},[3069,12534,4423],{"class":3667},[3069,12536,4288],{"class":3093},[3069,12538,4428],{"class":3106},[3069,12540,3044],{"class":3093},[3069,12542,4238],{"class":3106},[3069,12544,4454],{"class":3093},[3069,12546,12547],{"class":3086},"// не можна видалити клієнта з замовленнями\n",[12341,12549,12551],{"icon":132,"title":12550},"Стаття та категорія (optional)",[3060,12552,12554],{"className":3062,"code":12553,"language":3064,"meta":3065,"style":3065},"// Optional One-to-Many: стаття може бути без категорії\nbuilder.HasOne(a => a.Category)\n       .WithMany(c => c.Articles)\n       .HasForeignKey(a => a.CategoryId) // int? nullable\n       .IsRequired(false)\n       .OnDelete(DeleteBehavior.SetNull); // видалення категорії → CategoryId = NULL\n",[3033,12555,12556,12561,12583,12603,12626,12638],{"__ignoreMap":3065},[3069,12557,12558],{"class":3071,"line":3072},[3069,12559,12560],{"class":3086},"// Optional One-to-Many: стаття може бути без категорії\n",[3069,12562,12563,12565,12567,12569,12571,12573,12575,12577,12579,12581],{"class":3071,"line":3090},[3069,12564,4300],{"class":3106},[3069,12566,3044],{"class":3093},[3069,12568,4335],{"class":3667},[3069,12570,4288],{"class":3093},[3069,12572,5554],{"class":3106},[3069,12574,4343],{"class":3093},[3069,12576,5554],{"class":3106},[3069,12578,3044],{"class":3093},[3069,12580,3367],{"class":3106},[3069,12582,3818],{"class":3093},[3069,12584,12585,12587,12589,12591,12593,12595,12597,12599,12601],{"class":3071,"line":3097},[3069,12586,6188],{"class":3093},[3069,12588,4362],{"class":3667},[3069,12590,4288],{"class":3093},[3069,12592,6814],{"class":3106},[3069,12594,4343],{"class":3093},[3069,12596,6814],{"class":3106},[3069,12598,3044],{"class":3093},[3069,12600,4068],{"class":3106},[3069,12602,3818],{"class":3093},[3069,12604,12605,12607,12609,12611,12613,12615,12617,12619,12621,12623],{"class":3071,"line":3128},[3069,12606,6188],{"class":3093},[3069,12608,4388],{"class":3667},[3069,12610,4288],{"class":3093},[3069,12612,5554],{"class":3106},[3069,12614,4343],{"class":3093},[3069,12616,5554],{"class":3106},[3069,12618,3044],{"class":3093},[3069,12620,3942],{"class":3106},[3069,12622,3804],{"class":3093},[3069,12624,12625],{"class":3086},"// int? nullable\n",[3069,12627,12628,12630,12632,12634,12636],{"class":3071,"line":3135},[3069,12629,6188],{"class":3093},[3069,12631,4410],{"class":3667},[3069,12633,4288],{"class":3093},[3069,12635,6967],{"class":3075},[3069,12637,3818],{"class":3093},[3069,12639,12640,12642,12644,12646,12648,12650,12652,12654],{"class":3071,"line":3178},[3069,12641,6188],{"class":3093},[3069,12643,4423],{"class":3667},[3069,12645,4288],{"class":3093},[3069,12647,4428],{"class":3106},[3069,12649,3044],{"class":3093},[3069,12651,4234],{"class":3106},[3069,12653,4454],{"class":3093},[3069,12655,12656],{"class":3086},"// видалення категорії → CategoryId = NULL\n",[12341,12658,12661],{"icon":12659,"title":12660},"i-lucide-user","Автор та контактна інформація",[3060,12662,12664],{"className":3062,"code":12663,"language":3064,"meta":3065,"style":3065},"// Optional One-to-One: Author може існувати без ContactInfo\nbuilder.HasOne(a => a.ContactInfo)\n       .WithOne(ci => ci.Author)\n       .HasForeignKey\u003CContactInfo>(ci => ci.AuthorId)\n       .IsRequired()\n       .OnDelete(DeleteBehavior.Cascade); // видалення автора → видалення ContactInfo\n",[3033,12665,12666,12671,12693,12713,12737,12745],{"__ignoreMap":3065},[3069,12667,12668],{"class":3071,"line":3072},[3069,12669,12670],{"class":3086},"// Optional One-to-One: Author може існувати без ContactInfo\n",[3069,12672,12673,12675,12677,12679,12681,12683,12685,12687,12689,12691],{"class":3071,"line":3090},[3069,12674,4300],{"class":3106},[3069,12676,3044],{"class":3093},[3069,12678,4335],{"class":3667},[3069,12680,4288],{"class":3093},[3069,12682,5554],{"class":3106},[3069,12684,4343],{"class":3093},[3069,12686,5554],{"class":3106},[3069,12688,3044],{"class":3093},[3069,12690,4661],{"class":3106},[3069,12692,3818],{"class":3093},[3069,12694,12695,12697,12699,12701,12703,12705,12707,12709,12711],{"class":3071,"line":3097},[3069,12696,6188],{"class":3093},[3069,12698,4517],{"class":3667},[3069,12700,4288],{"class":3093},[3069,12702,5533],{"class":3106},[3069,12704,4343],{"class":3093},[3069,12706,5533],{"class":3106},[3069,12708,3044],{"class":3093},[3069,12710,3035],{"class":3106},[3069,12712,3818],{"class":3093},[3069,12714,12715,12717,12719,12721,12723,12725,12727,12729,12731,12733,12735],{"class":3071,"line":3128},[3069,12716,6188],{"class":3093},[3069,12718,4388],{"class":3667},[3069,12720,3143],{"class":3093},[3069,12722,4661],{"class":3082},[3069,12724,5321],{"class":3093},[3069,12726,5533],{"class":3106},[3069,12728,4343],{"class":3093},[3069,12730,5533],{"class":3106},[3069,12732,3044],{"class":3093},[3069,12734,3057],{"class":3106},[3069,12736,3818],{"class":3093},[3069,12738,12739,12741,12743],{"class":3071,"line":3135},[3069,12740,6188],{"class":3093},[3069,12742,4410],{"class":3667},[3069,12744,5600],{"class":3093},[3069,12746,12747,12749,12751,12753,12755,12757,12759,12761],{"class":3071,"line":3178},[3069,12748,6188],{"class":3093},[3069,12750,4423],{"class":3667},[3069,12752,4288],{"class":3093},[3069,12754,4428],{"class":3106},[3069,12756,3044],{"class":3093},[3069,12758,4433],{"class":3106},[3069,12760,4454],{"class":3093},[3069,12762,12763],{"class":3086},"// видалення автора → видалення ContactInfo\n",[3010,12765],{},[2960,12767,12769],{"id":12768},"правила-хорошого-тону-при-роботі-зі-звязками","Правила хорошого тону при роботі зі зв'язками",[2965,12771,12772],{},"Ряд практик, що суттєво спрощують роботу зі зв'язками в EF Core:",[2965,12774,12775],{},[2978,12776,12777],{},"Правило 1: Завжди включайте FK-властивість явно.",[2965,12779,12780,12781,12784],{},"Не покладайтесь на Shadow Properties для FK. Явне ",[3033,12782,12783],{},"public int AuthorId { get; set; }"," дає вам доступ до FK без завантаження навігаційної властивості, спрощує перевірку і дає кращу продуктивність:",[3060,12786,12788],{"className":3062,"code":12787,"language":3064,"meta":3065,"style":3065},"// ✅ Явний FK: можна оновити без завантаження Author\nvar book = await context.Books.FindAsync(bookId);\nbook!.AuthorId = newAuthorId; // Просто змінюємо int — без Include!\nawait context.SaveChangesAsync();\n\n// ❌ Без FK: потрібно завантажувати Author\nvar book = await context.Books.Include(b => b.Author).FirstAsync(b => b.Id == bookId);\nbook.Author = await context.Authors.FindAsync(newAuthorId);\nawait context.SaveChangesAsync();\n",[3033,12789,12790,12795,12822,12840,12852,12856,12861,12915,12943],{"__ignoreMap":3065},[3069,12791,12792],{"class":3071,"line":3072},[3069,12793,12794],{"class":3086},"// ✅ Явний FK: можна оновити без завантаження Author\n",[3069,12796,12797,12799,12801,12803,12805,12807,12809,12811,12813,12815,12817,12820],{"class":3071,"line":3090},[3069,12798,7030],{"class":3075},[3069,12800,6031],{"class":3106},[3069,12802,5879],{"class":3093},[3069,12804,7038],{"class":3075},[3069,12806,7041],{"class":3106},[3069,12808,3044],{"class":3093},[3069,12810,3151],{"class":3106},[3069,12812,3044],{"class":3093},[3069,12814,9547],{"class":3667},[3069,12816,4288],{"class":3093},[3069,12818,12819],{"class":3106},"bookId",[3069,12821,3711],{"class":3093},[3069,12823,12824,12826,12828,12830,12832,12835,12837],{"class":3071,"line":3097},[3069,12825,6052],{"class":3106},[3069,12827,7284],{"class":3093},[3069,12829,3057],{"class":3106},[3069,12831,5879],{"class":3093},[3069,12833,12834],{"class":3106},"newAuthorId",[3069,12836,3116],{"class":3093},[3069,12838,12839],{"class":3086},"// Просто змінюємо int — без Include!\n",[3069,12841,12842,12844,12846,12848,12850],{"class":3071,"line":3128},[3069,12843,7038],{"class":3075},[3069,12845,7041],{"class":3106},[3069,12847,3044],{"class":3093},[3069,12849,9625],{"class":3667},[3069,12851,5973],{"class":3093},[3069,12853,12854],{"class":3071,"line":3135},[3069,12855,3132],{"emptyLinePlaceholder":3131},[3069,12857,12858],{"class":3071,"line":3178},[3069,12859,12860],{"class":3086},"// ❌ Без FK: потрібно завантажувати Author\n",[3069,12862,12863,12865,12867,12869,12871,12873,12875,12877,12879,12881,12883,12885,12887,12889,12891,12893,12895,12897,12899,12901,12903,12905,12907,12909,12911,12913],{"class":3071,"line":3184},[3069,12864,7030],{"class":3075},[3069,12866,6031],{"class":3106},[3069,12868,5879],{"class":3093},[3069,12870,7038],{"class":3075},[3069,12872,7041],{"class":3106},[3069,12874,3044],{"class":3093},[3069,12876,3151],{"class":3106},[3069,12878,3044],{"class":3093},[3069,12880,7081],{"class":3667},[3069,12882,4288],{"class":3093},[3069,12884,6074],{"class":3106},[3069,12886,4343],{"class":3093},[3069,12888,6074],{"class":3106},[3069,12890,3044],{"class":3093},[3069,12892,3035],{"class":3106},[3069,12894,9044],{"class":3093},[3069,12896,8839],{"class":3667},[3069,12898,4288],{"class":3093},[3069,12900,6074],{"class":3106},[3069,12902,4343],{"class":3093},[3069,12904,6074],{"class":3106},[3069,12906,3044],{"class":3093},[3069,12908,5332],{"class":3106},[3069,12910,6086],{"class":3093},[3069,12912,12819],{"class":3106},[3069,12914,3711],{"class":3093},[3069,12916,12917,12919,12921,12923,12925,12927,12929,12931,12933,12935,12937,12939,12941],{"class":3071,"line":3189},[3069,12918,6052],{"class":3106},[3069,12920,3044],{"class":3093},[3069,12922,3035],{"class":3106},[3069,12924,5879],{"class":3093},[3069,12926,7038],{"class":3075},[3069,12928,7041],{"class":3106},[3069,12930,3044],{"class":3093},[3069,12932,4852],{"class":3106},[3069,12934,3044],{"class":3093},[3069,12936,9547],{"class":3667},[3069,12938,4288],{"class":3093},[3069,12940,12834],{"class":3106},[3069,12942,3711],{"class":3093},[3069,12944,12945,12947,12949,12951,12953],{"class":3071,"line":3202},[3069,12946,7038],{"class":3075},[3069,12948,7041],{"class":3106},[3069,12950,3044],{"class":3093},[3069,12952,9625],{"class":3667},[3069,12954,5973],{"class":3093},[2965,12956,12957],{},[2978,12958,12959],{},"Правило 2: Явно задавайте OnDelete.",[2965,12961,12962,12963,12324,12966,12969],{},"Не покладайтесь на дефолтні значення. ",[3033,12964,12965],{},"OnDelete(DeleteBehavior.Cascade)",[3033,12967,12968],{},"OnDelete(DeleteBehavior.Restrict)"," — явно, у конфігурації, з коментарем якщо потрібно.",[2965,12971,12972],{},[2978,12973,12974],{},"Правило 3: Ініціалізуйте колекції.",[3060,12976,12978],{"className":3062,"code":12977,"language":3064,"meta":3065,"style":3065},"// ✅ Колекція завжди не null — без NullReferenceException\npublic ICollection\u003CBook> Books { get; set; } = new List\u003CBook>();\n\n// ❌ Null колекція: NullReferenceException при foreach без Include\npublic ICollection\u003CBook> Books { get; set; }\n",[3033,12979,12980,12985,13019,13023,13028],{"__ignoreMap":3065},[3069,12981,12982],{"class":3071,"line":3072},[3069,12983,12984],{"class":3086},"// ✅ Колекція завжди не null — без NullReferenceException\n",[3069,12986,12987,12989,12991,12993,12995,12997,12999,13001,13003,13005,13007,13009,13011,13013,13015,13017],{"class":3071,"line":3090},[3069,12988,3076],{"class":3075},[3069,12990,3140],{"class":3106},[3069,12992,3143],{"class":3093},[3069,12994,3053],{"class":3106},[3069,12996,3148],{"class":3093},[3069,12998,3151],{"class":3106},[3069,13000,3110],{"class":3093},[3069,13002,3113],{"class":3106},[3069,13004,3116],{"class":3093},[3069,13006,3119],{"class":3106},[3069,13008,3162],{"class":3093},[3069,13010,3165],{"class":3075},[3069,13012,3168],{"class":3082},[3069,13014,3143],{"class":3093},[3069,13016,3053],{"class":3082},[3069,13018,3175],{"class":3093},[3069,13020,13021],{"class":3071,"line":3097},[3069,13022,3132],{"emptyLinePlaceholder":3131},[3069,13024,13025],{"class":3071,"line":3128},[3069,13026,13027],{"class":3086},"// ❌ Null колекція: NullReferenceException при foreach без Include\n",[3069,13029,13030,13032,13034,13036,13038,13040,13042,13044,13046,13048,13050],{"class":3071,"line":3135},[3069,13031,3076],{"class":3075},[3069,13033,3140],{"class":3106},[3069,13035,3143],{"class":3093},[3069,13037,3053],{"class":3106},[3069,13039,3148],{"class":3093},[3069,13041,3151],{"class":3106},[3069,13043,3110],{"class":3093},[3069,13045,3113],{"class":3106},[3069,13047,3116],{"class":3093},[3069,13049,3119],{"class":3106},[3069,13051,3224],{"class":3093},[2965,13053,13054],{},[2978,13055,13056],{},"Правило 4: При зборці зв'язків — завантажуйте Principal до додавання Dependent.",[3060,13058,13060],{"className":3062,"code":13059,"language":3064,"meta":3065,"style":3065},"// ❌ Неправильно: Author не завантажений, EF Core може не правильно відслідкувати\nvar book = new Book { AuthorId = 1, Title = \"New Book\" };\ncontext.Books.Add(book);\nawait context.SaveChangesAsync(); // Нормально, але Author.Books порожня\n\n// ✅ Правильно: якщо потрібна двостороння консистентність\nvar author = await context.Authors.FindAsync(1);\nvar book = new Book { Title = \"New Book\" };\nauthor!.Books.Add(book); // EF Core автоматично заповнить book.AuthorId\nawait context.SaveChangesAsync();\n",[3033,13061,13062,13067,13100,13118,13133,13137,13142,13168,13190,13211],{"__ignoreMap":3065},[3069,13063,13064],{"class":3071,"line":3072},[3069,13065,13066],{"class":3086},"// ❌ Неправильно: Author не завантажений, EF Core може не правильно відслідкувати\n",[3069,13068,13069,13071,13073,13075,13077,13079,13081,13083,13085,13087,13089,13092,13094,13097],{"class":3071,"line":3090},[3069,13070,7030],{"class":3075},[3069,13072,6031],{"class":3106},[3069,13074,5879],{"class":3093},[3069,13076,3165],{"class":3075},[3069,13078,3196],{"class":3082},[3069,13080,3110],{"class":3093},[3069,13082,3057],{"class":3106},[3069,13084,5879],{"class":3093},[3069,13086,10105],{"class":6873},[3069,13088,3346],{"class":3093},[3069,13090,13091],{"class":3106},"Title",[3069,13093,5879],{"class":3093},[3069,13095,13096],{"class":3676},"\"New Book\"",[3069,13098,13099],{"class":3093}," };\n",[3069,13101,13102,13104,13106,13108,13110,13112,13114,13116],{"class":3071,"line":3097},[3069,13103,9851],{"class":3106},[3069,13105,3044],{"class":3093},[3069,13107,3151],{"class":3106},[3069,13109,3044],{"class":3093},[3069,13111,5914],{"class":3667},[3069,13113,4288],{"class":3093},[3069,13115,6052],{"class":3106},[3069,13117,3711],{"class":3093},[3069,13119,13120,13122,13124,13126,13128,13130],{"class":3071,"line":3128},[3069,13121,7038],{"class":3075},[3069,13123,7041],{"class":3106},[3069,13125,3044],{"class":3093},[3069,13127,9625],{"class":3667},[3069,13129,5858],{"class":3093},[3069,13131,13132],{"class":3086},"// Нормально, але Author.Books порожня\n",[3069,13134,13135],{"class":3071,"line":3135},[3069,13136,3132],{"emptyLinePlaceholder":3131},[3069,13138,13139],{"class":3071,"line":3178},[3069,13140,13141],{"class":3086},"// ✅ Правильно: якщо потрібна двостороння консистентність\n",[3069,13143,13144,13146,13148,13150,13152,13154,13156,13158,13160,13162,13164,13166],{"class":3071,"line":3184},[3069,13145,7030],{"class":3075},[3069,13147,11798],{"class":3106},[3069,13149,5879],{"class":3093},[3069,13151,7038],{"class":3075},[3069,13153,7041],{"class":3106},[3069,13155,3044],{"class":3093},[3069,13157,4852],{"class":3106},[3069,13159,3044],{"class":3093},[3069,13161,9547],{"class":3667},[3069,13163,4288],{"class":3093},[3069,13165,10105],{"class":6873},[3069,13167,3711],{"class":3093},[3069,13169,13170,13172,13174,13176,13178,13180,13182,13184,13186,13188],{"class":3071,"line":3189},[3069,13171,7030],{"class":3075},[3069,13173,6031],{"class":3106},[3069,13175,5879],{"class":3093},[3069,13177,3165],{"class":3075},[3069,13179,3196],{"class":3082},[3069,13181,3110],{"class":3093},[3069,13183,13091],{"class":3106},[3069,13185,5879],{"class":3093},[3069,13187,13096],{"class":3676},[3069,13189,13099],{"class":3093},[3069,13191,13192,13194,13196,13198,13200,13202,13204,13206,13208],{"class":3071,"line":3202},[3069,13193,11835],{"class":3106},[3069,13195,7284],{"class":3093},[3069,13197,3151],{"class":3106},[3069,13199,3044],{"class":3093},[3069,13201,5914],{"class":3667},[3069,13203,4288],{"class":3093},[3069,13205,6052],{"class":3106},[3069,13207,4454],{"class":3093},[3069,13209,13210],{"class":3086},"// EF Core автоматично заповнить book.AuthorId\n",[3069,13212,13213,13215,13217,13219,13221],{"class":3071,"line":3207},[3069,13214,7038],{"class":3075},[3069,13216,7041],{"class":3106},[3069,13218,3044],{"class":3093},[3069,13220,9625],{"class":3667},[3069,13222,5973],{"class":3093},[3010,13224],{},[2960,13226,13228],{"id":13227},"практичні-завдання","Практичні завдання",[12338,13230,13231,13293,13350],{},[12341,13232,13235,13262,13280],{"icon":13233,"title":13234},"i-lucide-brain","Рівень 1: Базові зв'язки",[2965,13236,13237,13240,13241,13244,13245,13248,13249,13244,13251,13254,13255,13244,13258,13261],{},[2978,13238,13239],{},"Завдання 1.1"," — Реалізуйте модель університету з кількома One-to-Many зв'язками: ",[3033,13242,13243],{},"Department"," → ",[3033,13246,13247],{},"Course"," (Required, один відділ може бути видалений тільки якщо немає курсів), ",[3033,13250,13247],{},[3033,13252,13253],{},"Lesson"," (Required, каскадне видалення), ",[3033,13256,13257],{},"Student",[3033,13259,13260],{},"Submission"," (Required, каскад). Запустіть міграцію і перевірте DDL: де CASCADE, де RESTRICT?",[2965,13263,13264,13267,13268,5915,13270,13273,13274,13276,13277,13279],{},[2978,13265,13266],{},"Завдання 1.2"," — Реалізуйте Optional One-to-One між ",[3033,13269,5263],{},[3033,13271,13272],{},"ParkingSpot"," (одному співробітнику може бути виданий одне місце парковки, або не видано). Де буде FK — в ",[3033,13275,5263],{}," чи ",[3033,13278,13272],{},"? Чому? Перевірте обидва варіанти і поясніть різницю у DDL.",[2965,13281,13282,13285,13286,5915,13289,13292],{},[2978,13283,13284],{},"Завдання 1.3"," — Продемонструйте різницю між ",[3033,13287,13288],{},"DeleteBehavior.Cascade",[3033,13290,13291],{},"DeleteBehavior.ClientSetNull",". Напишіть два тести: (а) видалення з завантаженими залежними (Include) → ClientSetNull спрацьовує; (б) видалення без завантаження (без Include) → ClientSetNull не захищає. Що потрібно змінити у другому тесті?",[12341,13294,13297,13315,13340],{"icon":13295,"title":13296},"i-lucide-bar-chart","Рівень 2: Ієрархія та складні сценарії",[2965,13298,13299,13302,13303,13306,13307,13310,13311,13314],{},[2978,13300,13301],{},"Завдання 2.1"," — Реалізуйте самореферентну ієрархію для системи навігаційного меню: ",[3033,13304,13305],{},"MenuItem { Id, Title, Url, OrderIndex, ParentId?, SubItems }",". Напишіть метод ",[3033,13308,13309],{},"GetMenuTree()",", що повертає всі кореневі пункти меню з підменю до 3 рівнів. Порівняйте кількість SQL-запитів з ",[3033,13312,13313],{},"Include().ThenInclude()"," vs ітеративним завантаженням.",[2965,13316,13317,13320,13321,5915,13324,13327,13328,13331,13332,13335,13336,13339],{},[2978,13318,13319],{},"Завдання 2.2"," — Реалізуйте систему, де між ",[3033,13322,13323],{},"User",[3033,13325,13326],{},"Role"," є явна join entity ",[3033,13329,13330],{},"UserRole"," з додатковим полем ",[3033,13333,13334],{},"AssignedAt: DateTime",". Налаштуйте складений PK ",[3033,13337,13338],{},"{UserId, RoleId}",". Напишіть код, що: (а) призначає роль користувачу, (б) перевіряє, чи є у користувача роль, (в) відкликає роль. Переконайтесь, що один і той самий User не може мати дублюючу Role.",[2965,13341,13342,13345,13346,13349],{},[2978,13343,13344],{},"Завдання 2.3"," — Використовуйте ",[3033,13347,13348],{},"DebugView.LongView"," ChangeTracker'а для детального вивчення того, як EF Core відстежує зв'язані сутності. Створіть Author з трьома Books. Після збереження: (а) виведіть DebugView, (б) видаліть одну Book, виведіть DebugView знову, (в) після SaveChanges виведіть DebugView вкотре. Проаналізуйте зміни станів.",[12341,13351,13354,13386],{"icon":13352,"title":13353},"i-lucide-rocket","Рівень 3: Складні патерни",[2965,13355,13356,13359,13360,5915,13363,13366,13367,13370,13371,13374,13375,13378,13379,13382,13383,3044],{},[2978,13357,13358],{},"Завдання 3.1 — Ланцюжок версій:"," Реалізуйте систему версіонування документів: ",[3033,13361,13362],{},"Document { Id, CurrentVersionId, CreatedById }",[3033,13364,13365],{},"DocumentVersion { Id, DocumentId, Number, Content, CreatedAt, PreviousVersionId? }",". Зв'язки: ",[3033,13368,13369],{},"Document → DocumentVersion"," (Current: One-to-One), ",[3033,13372,13373],{},"Document → ICollection\u003CDocumentVersion>"," (History: One-to-Many), ",[3033,13376,13377],{},"DocumentVersion → DocumentVersion"," (PreviousVersion: Self-ref One-to-One Optional). Напишіть метод ",[3033,13380,13381],{},"CreateNewVersion(int documentId, string content)",", що атомарно: (а) зберігає нову версію, (б) оновлює ",[3033,13384,13385],{},"Document.CurrentVersionId",[2965,13387,13388,13391,13392,13395,13396,13399,13400,13402,13403,13406,13407,13409,13410,13413,13414,13417,13418,13420],{},[2978,13389,13390],{},"Завдання 3.2 — Backing field + DDD:"," Реалізуйте ",[3033,13393,13394],{},"ShoppingCart"," з ",[3033,13397,13398],{},"CartItem",", де: (а) ",[3033,13401,13398],{}," доступні зовні тільки через ",[3033,13404,13405],{},"IReadOnlyCollection\u003CCartItem>"," через backing field, (б) додавання ",[3033,13408,13398],{}," тільки через ",[3033,13411,13412],{},"cart.AddItem(product, qty)"," з валідацією (не можна додати той самий продукт двічі — натомість збільшити кількість), (в) видалення через ",[3033,13415,13416],{},"cart.RemoveItem(productId)",". Налаштуйте Fluent API для backing field. Перевірте, що EF Core правильно зберігає і завантажує ",[3033,13419,13398],{}," через backing field.",[3010,13422],{},[2960,13424,13426],{"id":13425},"підсумок","Підсумок",[11567,13428,13429,13434],{},[2965,13430,13431],{},[2978,13432,13433],{},"Ключові думки цієї статті:",[2972,13435,13436,13444,13454,13462,13465,13471,13477,13482,13485],{},[2975,13437,13438,13440,13441,13443],{},[2978,13439,3030],{}," — сторона зі своїм PK (батько); ",[2978,13442,3049],{}," — сторона з FK (дитина). FK завжди у Dependent.",[2975,13445,13446,13449,13450,13453],{},[2978,13447,13448],{},"Required"," One-to-Many: FK NOT NULL → Cascade за замовчуванням. ",[2978,13451,13452],{},"Optional",": FK nullable → ClientSetNull за замовчуванням (небезпечно! краще SetNull або Restrict явно).",[2975,13455,13456,13459,13460,3044],{},[2978,13457,13458],{},"One-to-One",": EF Core не може автоматично визначити Principal/Dependent — необхідний Fluent API з ",[3033,13461,5634],{},[2975,13463,13464],{},"Навігаційна властивість — колекція → One-to-Many; посилання → One-to-One або Many-to-One.",[2975,13466,13467,13470],{},[2978,13468,13469],{},"Односторонні навігації",": ідентичний DDL, різна C#-модель. Краще для великих колекцій і строгого DDD.",[2975,13472,13473,13476],{},[2978,13474,13475],{},"Self-referencing",": nullable FK для кореневих елементів; Restrict замість Cascade (обережно з СУБД).",[2975,13478,13479,13481],{},[3033,13480,4428],{},": Cascade (видаляє), Restrict (забороняє), SetNull (обнуляє FK), ClientSetNull (обнуляє тільки у ChangeTracker).",[2975,13483,13484],{},"Завжди оголошуйте FK-поле явно — це дозволяє оновлювати зв'язок без завантаження навігаційних властивостей.",[2975,13486,13487,13488,3044],{},"Ініціалізуйте колекції у конструкторі або в місці оголошення: ",[3033,13489,13490],{},"= new List\u003CBook>()",[2965,13492,13493,13494,13497],{},"Наступна стаття — ",[5554,13495,13496],{"href":492},"Зв'язки Advanced: Many-to-Many та Складні Сценарії"," — розбирає M:N зв'язки з implicit та explicit join entity, skip navigations, alternate keys, shadow FK, складні графи об'єктів.",[13499,13500,13501],"style",{},"html pre.shiki code .su1O8, html code.shiki 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