Refactoring durchgeführt

DaSaSo.EntityFramework/Services/Common/NonQueryDataService.cs

@@ -0,0 +1,51 @@
+using DaSaSo.Domain.Model;
+using Microsoft.EntityFrameworkCore;
+using Microsoft.EntityFrameworkCore.ChangeTracking;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace DaSaSo.EntityFramework.Services.Common
+{
+    class NonQueryDataService<T> where T: DomainObject
+    {
+        private readonly DaSaSoDbContextFactory _contextFactory;
+
+        public NonQueryDataService(DaSaSoDbContextFactory contextFactory)
+        {
+            _contextFactory = contextFactory;
+        }
+        public async Task<T> Create(T entity)
+        {
+            using (DaSaSoDbContext context = _contextFactory.CreateDbContext())
+            {
+                EntityEntry<T> createdEntity = await context.Set<T>().AddAsync(entity);
+                await context.SaveChangesAsync();
+                return createdEntity.Entity;
+            }
+        }
+
+        public async Task<bool> Delete(int id)
+        {
+            using (DaSaSoDbContext context = _contextFactory.CreateDbContext())
+            {
+                T entity = await context.Set<T>().FirstOrDefaultAsync((e) => e.Id == id);
+                context.Set<T>().Remove(entity);
+                await context.SaveChangesAsync();
+                return true;
+            }
+        }
+        public async Task<T> Update(int id, T entity)
+        {
+            using (DaSaSoDbContext context = _contextFactory.CreateDbContext())
+            {
+                entity.Id = id;
+                context.Set<T>().Update(entity);
+                await context.SaveChangesAsync();
+                return entity;
+            }
+        }
+    }
+}