Dynamic query projection

[YuriyDurov]

This pull request introduces dynamic query projection capabilities and refactors repository methods to support flexible filtering. The changes include updates to the BooksController in the sample app to showcase handling query parameters for dynamic projections, modifications to repository interfaces and implementations to support generic filtering, and cleanup of unused methods.

Dynamic Query Projection

• src/BitzArt.CA.Core/Interfaces/IRepository.cs: Added new overloads for repository methods (GetAllAsync, GetPageAsync, FirstAsync, FirstOrDefaultAsync, SingleAsync, SingleOrDefaultAsync) to support filtering using Func<IQueryable<TEntity>, IQueryable>. [1] [2] [3] [4] [5] [6]
• src/BitzArt.CA.Persistence.EntityFrameworkCore/Repositories/AppDbRepository.cs: Implemented the new filtering methods in the repository, enabling dynamic query projection. [1] [2] [3] [4] [5] [6]

Sample App

• sample/SampleApp/Requests/Books.http: Added new query parameter property to filter books by specific attributes, such as title.
• sample/SampleApp/Services/BitzArt.CA.SampleApp.WebApi/Controllers/BooksController.cs: Updated GetAllAsync method to accept a property query parameter and dynamically project query results based on the specified property.

[Copilot]

Pull Request Overview

This pull request introduces dynamic query projection capabilities to enable flexible query filtering and projection. Key changes include:

• Adding overloads to repository interfaces and implementations to support filtering via a Func<IQueryable, IQueryable> predicate.
• Updating the sample BooksController to accept a "property" query parameter for dynamic projection.
• Adjustments to the sample HTTP request file and cleanup in the test controller.

Reviewed Changes

Copilot reviewed 5 out of 5 changed files in this pull request and generated 1 comment.

Show a summary per file

File	Description
tests/BitzArt.CA.TestApp/Controllers/TestController.cs	Commented out logging and response code in TestGet; ensure this is intentional.
src/BitzArt.CA.Persistence.EntityFrameworkCore/Repositories/AppDbRepository.cs	Added dynamic filtering overloads and new Set methods to enable dynamic query projection.
src/BitzArt.CA.Core/Interfaces/IRepository.cs	Introduced new method signatures for dynamic projection capabilities.
sample/SampleApp/Services/BitzArt.CA.SampleApp.WebApi/Controllers/BooksController.cs	Updated GetAllAsync to demonstrate dynamic projection based on the "property" query parameter.
sample/SampleApp/Requests/Books.http	Added examples to test the new query parameter functionality.

Comments suppressed due to low confidence (1)

sample/SampleApp/Services/BitzArt.CA.SampleApp.WebApi/Controllers/BooksController.cs:20

• For consistency in dynamic projection responses, consider always applying an explicit projection (even if it's an identity mapping) so that the return type remains predictable.

            return q;