Entity Framework Plus

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• Entity Framework Plus
• Git repository

Query cache

var items = await context.Items.FromCacheAsync(); // The first call perform a database round trip // The following calls will take the value from the memory instead // for immediate methods (count, first, single, contains, any), use a query Deferred var count = await context.Items.DeferredCount().FromCacheAsync();

Query Future

Allow to reduce database roundtrip by batching multiple queries in the same sql command.

var futureItems = dbContext.Items.Future(); var futureCategories = dbContext.Categories.Future(); // TRIGGER all pending queries (futureItems & futureCategories) var items = await futureItems.ToListAsync(); // for immediate methods (count, first, single, contains, any), use a query Deferred var futureItemCount = await context.Items.DeferredCount().FutureValue(); var count = futureItemCount.Value;

Audit

Allow to easily track changes, exclude/include entity or property and auto save audit entries in the database.

Batch update

EF Core 7 ExecuteUpdate can handle this scenario

context.Items.Where(x => ids.Contains(x.Id)) .UpdateAsync(x => new Item { Name = "new name" }, x => { x.Executing = command => Console.WriteLine(command.CommandText); });

UPDATE A SET A.[Name] = @zzz_BatchUpdate_0 FROM [Items] AS A INNER JOIN ( SELECT [i].[Id], [i].[Name] FROM [Items] AS [i] WHERE [i].[Id] IN (1, 2) ) AS B ON A.[Id] = B.[Id]

• Updates multiples rows
  • in a single database roundtrip
  • without loading entities in the context

Limitations:

• Do not support Complex Type
• Do not support TPC
• Do not support TPH
• Do not support TPT

If you need to use one of this feature, you need to use the paying library Entity Framework Extensions

Batch delete

EF Core 7 ExecuteDelete can handle this scenario

• Deletes multiples rows
  • in a single database roundtrip
  • without loading entities in the context