first commit

RS_system/Data/DbContextOptimizationExtensions.cs

@@ -0,0 +1,42 @@
+using Microsoft.EntityFrameworkCore;
+
+namespace Rs_system.Data;
+
+public static class DbContextOptimizationExtensions
+{
+    public static IQueryable<T> AsNoTrackingWithIdentityResolution<T>(this IQueryable<T> query) where T : class
+    {
+        return query.AsNoTrackingWithIdentityResolution();
+    }
+
+    public static IQueryable<T> AsSplitQuery<T>(this IQueryable<T> query) where T : class
+    {
+        return query.AsSplitQuery();
+    }
+
+    public static IQueryable<T> TagWith<T>(this IQueryable<T> query, string comment) where T : class
+    {
+        return query.TagWith(comment);
+    }
+
+    public static async Task<List<T>> ToListWithCountAsync<T>(this IQueryable<T> query, CancellationToken cancellationToken = default)
+    {
+        var result = await query.ToListAsync(cancellationToken);
+        return result;
+    }
+
+    public static async Task<T?> FirstOrDefaultNoTrackingAsync<T>(this IQueryable<T> query, CancellationToken cancellationToken = default) where T : class
+    {
+        return await query.AsNoTracking().FirstOrDefaultAsync(cancellationToken);
+    }
+
+    public static async Task<bool> AnyNoTrackingAsync<T>(this IQueryable<T> query, CancellationToken cancellationToken = default) where T : class
+    {
+        return await query.AsNoTracking().AnyAsync(cancellationToken);
+    }
+
+    public static async Task<int> CountNoTrackingAsync<T>(this IQueryable<T> query, CancellationToken cancellationToken = default) where T : class
+    {
+        return await query.AsNoTracking().CountAsync(cancellationToken);
+    }
+}