dotnet-dynamic-linq/PoweredSoft.DynamicLinq.EntityFramework/Extensions/DbContextExtensions.cs

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using System;
using System.Collections.Generic;
using System.Data.Entity;
using System.Linq;
using System.Reflection;
using System.Text;
using System.Threading.Tasks;
using PoweredSoft.DynamicLinq.Extensions;
using PoweredSoft.DynamicLinq.Fluent;
namespace PoweredSoft.DynamicLinq.EntityFramework.Extensions
{
public static class DbContextExtensions
{
private static readonly MethodInfo QueryMethod = typeof(DbContextExtensions)
.GetMethods(BindingFlags.Static | BindingFlags.Public)
.First(t => t.Name == "Query" && t.IsGenericMethod);
public static IQueryable Query(this DbContext context, Type pocoType, Action<QueryBuilderBase> callback)
{
var method = QueryMethod.MakeGenericMethod(pocoType);
var invokeResult = method.Invoke(null, new object[] {context, callback});
var ret = invokeResult as IQueryable;
return ret;
}
public static IQueryable<T> Query<T>(this DbContext context, Action<QueryBuilderBase> callback)
where T : class
{
var query = context.Set<T>().AsQueryable();
query = query.Query(callback);
return query;
}
}
}