45 lines
2.0 KiB
C#
45 lines
2.0 KiB
C#
using System.Collections.Generic;
|
|
using System.Linq;
|
|
using Microsoft.EntityFrameworkCore;
|
|
|
|
namespace DataLayer
|
|
{
|
|
// only library importing should use tracking. All else should be NoTracking.
|
|
// only library importing should directly query Book. All else should use LibraryBook
|
|
public static class LibraryBookQueries
|
|
{
|
|
//// tracking is a bad idea for main grid. it prevents anything else from updating entities unless getting them from the grid
|
|
//public static List<LibraryBook> GetLibrary_Flat_WithTracking(this LibationContext context)
|
|
// => context
|
|
// .Library
|
|
// .GetLibrary()
|
|
// .ToList();
|
|
|
|
public static List<LibraryBook> GetLibrary_Flat_NoTracking(this LibationContext context)
|
|
=> context
|
|
.LibraryBooks
|
|
.AsNoTrackingWithIdentityResolution()
|
|
.GetLibrary()
|
|
.ToList();
|
|
|
|
public static LibraryBook GetLibraryBook_Flat_NoTracking(this LibationContext context, string productId)
|
|
=> context
|
|
.LibraryBooks
|
|
.AsNoTrackingWithIdentityResolution()
|
|
.GetLibraryBook(productId);
|
|
|
|
public static LibraryBook GetLibraryBook(this IQueryable<LibraryBook> library, string productId)
|
|
=> library
|
|
.GetLibrary()
|
|
.SingleOrDefault(lb => lb.Book.AudibleProductId == productId);
|
|
|
|
/// <summary>This is still IQueryable. YOU MUST CALL ToList() YOURSELF</summary>
|
|
public static IQueryable<LibraryBook> GetLibrary(this IQueryable<LibraryBook> library)
|
|
=> library
|
|
// owned items are always loaded. eg: book.UserDefinedItem, book.Supplements
|
|
.Include(le => le.Book).ThenInclude(b => b.SeriesLink).ThenInclude(sb => sb.Series)
|
|
.Include(le => le.Book).ThenInclude(b => b.ContributorsLink).ThenInclude(c => c.Contributor)
|
|
.Include(le => le.Book).ThenInclude(b => b.Category).ThenInclude(c => c.ParentCategory);
|
|
}
|
|
}
|