41 lines
1.5 KiB
C#
41 lines
1.5 KiB
C#
using System;
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using System.Collections.Generic;
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using System.Linq;
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using System.Reflection;
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using System.Text;
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using System.Threading.Tasks;
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using Microsoft.EntityFrameworkCore;
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using PoweredSoft.DynamicLinq.Fluent;
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namespace PoweredSoft.DynamicLinq.EntityFrameworkCore
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{
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public static class DbContextExtensions
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{
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private static MethodInfo SetMethod = typeof(DbContext).GetMethod(nameof(DbContext.Set), BindingFlags.Public | BindingFlags.Instance);
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public static IQueryable Query(this DbContext context, Type pocoType, Action<WhereBuilder> callback)
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{
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var set = SetMethod.MakeGenericMethod(pocoType).Invoke(context, new object[] { });
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var queryable = set as IQueryable;
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var builder = new WhereBuilder(queryable);
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callback(builder);
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var result = builder.Build();
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return result;
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}
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public static IQueryable<T> Query<T>(this DbContext context, Action<WhereBuilder> callback)
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where T : class
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{
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var query = context.Set<T>().AsQueryable();
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query = query.Query(callback);
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return query;
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}
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public static IQueryable Where(this DbContext context, Type pocoType, Action<WhereBuilder> callback)
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=> context.Query(pocoType, callback);
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public static IQueryable<T> Where<T>(this DbContext context, Action<WhereBuilder> callback)
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where T : class => context.Query<T>(callback);
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}
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}
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