//
// Queryable.cs
//
// Authors:
// Marek Safar (marek.safar@gmail.com)
// Alejandro Serrano "Serras" (trupill@yahoo.es)
// Jb Evain (jbevain@novell.com)
// Andreas Noever (andreas.noever@gmail.com)
//
// Copyright (C) 2008 Novell, Inc (http://www.novell.com)
//
// Permission is hereby granted, free of charge, to any person obtaining
// a copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to
// permit persons to whom the Software is furnished to do so, subject to
// the following conditions:
//
// The above copyright notice and this permission notice shall be
// included in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
//
using System;
using System.Collections;
using System.Collections.Generic;
using System.Linq.Expressions;
using System.Reflection;
using System.Linq;
namespace System.Linq{
public static class Queryable {
static MethodInfo MakeGeneric (MethodBase method, params Type [] parameters)
{
return ((MethodInfo) method).MakeGenericMethod (parameters);
}
static Expression StaticCall (MethodInfo method, params Expression [] expressions)
{
return Expression.Call (null, method, expressions);
}
static TRet Execute<TRet, TSource> (this IQueryable<TSource> source, MethodBase current)
{
return source.Provider.Execute<TRet> (
StaticCall (
MakeGeneric (current, typeof (TSource)),
source.Expression));
}
#region Aggregate
public static TSource Aggregate<TSource> (this IQueryable<TSource> source, Expression<Func<TSource, TSource, TSource>> func)
{
Check.SourceAndFunc (source, func);
return source.Provider.Execute<TSource> (
StaticCall (
MakeGeneric (MethodBase.GetCurrentMethod (), typeof (TSource)),
source.Expression,
Expression.Quote (func)));
}
public static TAccumulate Aggregate<TSource, TAccumulate> (this IQueryable<TSource> source, TAccumulate seed, Expression<Func<TAccumulate, TSource, TAccumulate>> func)
{
Check.SourceAndFunc (source, func);
return source.Provider.Execute<TAccumulate> (
StaticCall (
MakeGeneric (MethodBase.GetCurrentMethod (), typeof (TSource), typeof (TAccumulate)),
source.Expression,
Expression.Constant (seed),
Expression.Quote (func)));
}
public static TResult Aggregate<TSource, TAccumulate, TResult> (this IQueryable<TSource> source, TAccumulate seed, Expression<Func<TAccumulate, TSource, TAccumulate>> func, Expression<Func<TAccumulate, TResult>> selector)
{
Check.SourceAndFuncAndSelector (source, func, selector);
return source.Provider.Execute<TResult> (
StaticCall (
MakeGeneric (MethodBase.GetCurrentMethod (), typeof (TSource), typeof (TAccumulate), typeof (TResult)),
source.Expression,
Expression.Constant (seed),
Expression.Quote (func),
Expression.Quote (selector)));
}
#endregion
#region All
public static bool All<TSource> (this IQueryable<TSource> source, Expression<Func<TSource, bool>> predicate)
{
Check.SourceAndPredicate (source, predicate);
return source.Provider.Execute<bool> (
StaticCall (
MakeGeneric (MethodBase.GetCurrentMethod (), typeof (TSource)),
source.Expression,
Expression.Quote (predicate)));
}
#endregion
#region Any
public static bool Any<TSource> (this IQueryable<TSource> source)
{
Check.Source (source);
return source.Provider.Execute<bool> (
StaticCall (
MakeGeneric (MethodBase.GetCurrentMethod (), typeof (TSource)),
source.Expression));
}
public static bool Any<TSource> (this IQueryable<TSource> source, Expression<Func<TSource, bool>> predicate)
{
Check.SourceAndPredicate (source, predicate);
return source.Provider.Execute<bool> (
StaticCall (
MakeGeneric (MethodBase.GetCurrentMethod (), typeof (TSource)),
source.Expression,
Expression.Quote (predicate)));
}
#endregion
#region AsQueryable
public static IQueryable<TElement> AsQueryable<TElement> (this IEnumerable<TElement> source)
{
if (source == null)
throw new ArgumentNullException ("source");
var queryable = source as IQueryable<TElement>;
if (queryable != null)
return queryable;
return new QueryableEnumerable<TElement> (source);
}
public static IQueryable AsQueryable (this IEnumerable source)
{
if (source == null)
throw new ArgumentNullException ("source");
var queryable = source as IQueryable;
if (queryable != null)
return queryable;
var type = source.GetType ();
if (!type.IsGenericImplementationOf (typeof (IEnumerable<>)))
throw new ArgumentException ("source is not IEnumerable<>");
return (IQueryable) Activator.CreateInstance (
typeof (QueryableEnumerable<>).MakeGenericType (type.GetFirstGenericArgument ()), source);
}
#endregion
#region Average
public static double Average (this IQueryable<int> source)
{
Check.Source (source);
return source.Provider.Execute<double>(
StaticCall (
(MethodInfo) MethodBase.GetCurrentMethod (),
source.Expression));
}
public static double? Average(this IQueryable<int?> source)
{
Check.Source (source);
return source.Provider.Execute<double?>(
StaticCall (
(MethodInfo) MethodBase.GetCurrentMethod (),
source.Expression));
}
public static double Average(this IQueryable<long> source)
{
Check.Source (source);
return source.Provider.Execute<double>(
StaticCall (
(MethodInfo) MethodBase.GetCurrentMethod (),
source.Expression));
}
public static double? Average(this IQueryable<long?> source)
{
Check.Source (source);
return source.Provider.Execute<double?>(
StaticCall (
(MethodInfo) MethodBase.GetCurrentMethod (),
source.Expression));
}
public static float Average(this IQueryable<float> source)
{
Check.Source (source);
return source.Provider.Execute<float>(
StaticCall (
(MethodInfo) MethodBase.GetCurrentMethod (),
source.Expression));
}
public static float? Average(this IQueryable<float?> source)
{
Check.Source (source);
return source.Provider.Execute<float?>(
StaticCall (
(MethodInfo) MethodBase.GetCurrentMethod (),
source.Expression));
}
public static double Average (this IQueryable<double> source)
{
Check.Source (source);
return source.Provider.Execute<double> (
StaticCall (
(MethodInfo) MethodBase.GetCurrentMethod (),
source.Expression));
}
public static double? Average (this IQueryable<double?> source)
{
Check.Source (source);
return source.Provider.Execute<double?> (
StaticCall (
(MethodInfo) MethodBase.GetCurrentMethod (),
source.Expression));
}
public static decimal Average(this IQueryable<decimal> source)
{
Check.Source (source);
return source.Provider.Execute<decimal>(
StaticCall (
(MethodInfo) MethodBase.GetCurrentMethod (),
source.Expression));
}
public static decimal? Average(this IQueryable<decimal?> source)
{
Check.Source (source);
return source.Provider.Execute<decimal?>(
StaticCall (
(MethodInfo) MethodBase.GetCurrentMethod (),
source.Expression));
}
public static double Average<TSource>(this IQueryable<TSource> source, Expression<Func<TSource, int>> selector)
{
Check.SourceAndSelector (source, selector);
return source.Provider.Execute<double>(
StaticCall (
MakeGeneric (MethodBase.GetCurrentMethod (), typeof (TSource)),
source.Expression,
Expression.Quote (selector)));
}
public static double? Average<TSource>(this IQueryable<TSource> source, Expression<Func<TSource, int?>> selector)
{
Check.SourceAndSelector (source, selector);
return source.Provider.Execute<double?>(
StaticCall (
MakeGeneric (MethodBase.GetCurrentMethod (), typeof (TSource)),
source.Expression,
Expression.Quote (selector)));
}
public static double Average<TSource>(this IQueryable<TSource> source, Expression<Func<TSource, long>> selector)
{
Check.SourceAndSelector (source, selector);
return source.Provider.Execute<double>(
StaticCall (
MakeGeneric (MethodBase.GetCurrentMethod (), typeof (TSource)),
source.Expression,
Expression.Quote (selector)));
}
public static double? Average<TSource>(this IQueryable<TSource> source, Expression<Func<TSource, long?>> selector)
{
Check.SourceAndSelector (source, selector);
return source.Provider.Execute<double?>(
StaticCall (
MakeGeneric (MethodBase.GetCurrentMethod (), typeof (TSource)),
source.Expression,
Expression.Quote (selector)));
}
public static float Average<TSource>(this IQueryable<TSource> source, Expression<Func<TSource, float>> selector)
{
Check.SourceAndSelector (source, selector);
return source.Provider.Execute<float>(
StaticCall (
MakeGeneric (MethodBase.GetCurrentMethod (), typeof (TSource)),
source.Expression,
Expression.Quote (selector)));
}
public static float? Average<TSource>(this IQueryable<TSource> source, Expression<Func<TSource, float?>> selector)
{
Check.SourceAndSelector (source, selector);
return source.Provider.Execute<float?>(
StaticCall (
MakeGeneric (MethodBase.GetCurrentMethod (), typeof (TSource)),
source.Expression,
Expression.Quote (selector)));
}
public static double Average<TSource> (this IQueryable<TSource> source, Expression<Func<TSource, double>> selector)
{
Check.SourceAndSelector (source, selector);
return source.Provider.Execute<double> (
StaticCall (
MakeGeneric (MethodBase.GetCurrentMethod (), typeof (TSource)),
source.Expression,
Expression.Quote (selector)));
}
public static double? Average<TSource> (this IQueryable<TSource> source, Expression<Func<TSource, double?>> selector)
{
Check.SourceAndSelector (source, selector);
return source.Provider.Execute<double?> (
StaticCall (
MakeGeneric (MethodBase.GetCurrentMethod (), typeof (TSource)),
source.Expression,
Expression.Quote (selector)));
}
public static decimal Average<TSource>(this IQueryable<TSource> source, Expression<Func<TSource, decimal>> selector)
{
Check.SourceAndSelector (source, selector);
return source.Provider.Execute<decimal>(
StaticCall (
MakeGeneric (MethodBase.GetCurrentMethod (), typeof (TSource)),
source.Expression,
Expression.Quote (selector)));
}
public static decimal? Average<TSource>(this IQueryable<TSource> source, Expression<Func<TSource, decimal?>> selector)
{
Check.SourceAndSelector (source, selector);
return source.Provider.Execute<decimal?>(
StaticCall (
MakeGeneric (MethodBase.GetCurrentMethod (), typeof (TSource)),
source.Expression,
Expression.Quote (selector)));
}
#endregion
#region Cast
public static IQueryable<TResult> Cast<TResult> (this IQueryable source)
{
Check.Source (source);
return (IQueryable<TResult>) source.Provider.CreateQuery (
StaticCall (MakeGeneric (MethodBase.GetCurrentMethod (), typeof (TResult)),
source.Expression));
}
#endregion
#region Concat
public static IQueryable<TSource> Concat<TSource> (this IQueryable<TSource> source1, IEnumerable<TSource> source2)
{
Check.Source1AndSource2 (source1, source2);
return source1.Provider.CreateQuery<TSource> (
StaticCall (
MakeGeneric (MethodBase.GetCurrentMethod (), typeof (TSource)),
source1.Expression,
Expression.Constant (source2)));
}
#endregion
#region Contains
public static bool Contains<TSource> (this IQueryable<TSource> source, TSource item)
{
Check.Source (source);
return source.Provider.Execute<bool> (
StaticCall (
MakeGeneric (MethodBase.GetCurrentMethod (), typeof (TSource)),
source.Expression,
Expression.Constant (item)));
}
public static bool Contains<TSource> (this IQueryable<TSource> source, TSource item, IEqualityComparer<TSource> comparer)
{
Check.Source (source);
return source.Provider.Execute<bool> (
StaticCall (
MakeGeneric (MethodBase.GetCurrentMethod (), typeof (TSource)),
source.Expression,
Expression.Constant (item),
Expression.Constant (comparer)));
}
#endregion
#region Count
public static int Count<TSource> (this IQueryable<TSource> source)
{
Check.Source (source);
return source.Execute<int, TSource> (MethodBase.GetCurrentMethod ());
}
public static int Count<TSource> (this IQueryable<TSource> source, Expression<Func<TSource, bool>> predicate)
{
Check.SourceAndPredicate (source, predicate);
return source.Provider.Execute<int> (
StaticCall (
MakeGeneric (MethodBase.GetCurrentMethod (), typeof (TSource)),
source.Expression,
Expression.Quote (predicate)));
}
#endregion
#region DefaultIfEmpty
public static IQueryable<TSource> DefaultIfEmpty<TSource> (this IQueryable<TSource> source)
{
Check.Source (source);
return source.Provider.CreateQuery<TSource> (
StaticCall (
MakeGeneric (MethodBase.GetCurrentMethod (), typeof (TSource)),
source.Expression));
}
public static IQueryable<TSource> DefaultIfEmpty<TSource> (this IQueryable<TSource> source, TSource defaultValue)
{
Check.Source (source);
return source.Provider.CreateQuery<TSource> (
StaticCall (
MakeGeneric (MethodBase.GetCurrentMethod (), typeof (TSource)),
source.Expression,
Expression.Constant (defaultValue)));
}
#endregion
#region Distinct
public static IQueryable<TSource> Distinct<TSource> (this IQueryable<TSource> source)
{
Check.Source (source);
return source.Provider.CreateQuery<TSource> (
StaticCall (
MakeGeneric (MethodBase.GetCurrentMethod (), typeof (TSource)),
source.Expression));
}
public static IQueryable<TSource> Distinct<TSource> (this IQueryable<TSource> source, IEqualityComparer<TSource> comparer)
{
Check.Source (source);
return source.Provider.CreateQuery<TSource> (
StaticCall (
MakeGeneric (MethodBase.GetCurrentMethod (), typeof (TSource)),
source.Expression,
Expression.Constant (comparer)));
}
#endregion
#region ElementAt
public static TSource ElementAt<TSource> (this IQueryable<TSource> source, int index)
{
Check.Source (source);
return source.Provider.Execute<TSource> (
StaticCall (
MakeGeneric (MethodBase.GetCurrentMethod (), typeof (TSource)),
source.Expression,
Expression.Constant (index)));
}
#endregion
#region ElementAtOrDefault
public static TSource ElementAtOrDefault<TSource> (this IQueryable<TSource> source, int index)
{
Check.Source (source);
return source.Provider.Execute<TSource> (
StaticCall (
MakeGeneric (MethodBase.GetCurrentMethod (), typeof (TSource)),
source.Expression,
Expression.Constant (index)));
}
#endregion
#region Except
public static IQueryable<TSource> Except<TSource> (this IQueryable<TSource> source1, IEnumerable<TSource> source2)
{
Check.Source1AndSource2 (source1, source2);
return source1.Provider.CreateQuery<TSource> (
StaticCall (
MakeGeneric (MethodBase.GetCurrentMethod (), typeof (TSource)),
source1.Expression,
Expression.Constant (source2)));
}
public static IQueryable<TSource> Except<TSource> (this IQueryable<TSource> source1, IEnumerable<TSource> source2, IEqualityComparer<TSource> comparer)
{
Check.Source1AndSource2 (source1, source2);
return source1.Provider.CreateQuery<TSource> (
StaticCall (
MakeGeneric (MethodBase.GetCurrentMethod (), typeof (TSource)),
source1.Expression,
Expression.Constant (source2),
Expression.Constant (comparer)));
}
#endregion
#region First
public static TSource First<TSource> (this IQueryable<TSource> source)
{
Check.Source (source);
return source.Provider.Execute<TSource> (
StaticCall (
MakeGeneric (MethodBase.GetCurrentMethod (), typeof (TSource)),
source.Expression));
}
public static TSource First<TSource> (this IQueryable<TSource> source, Expression<Func<TSource, bool>> predicate)
{
Check.SourceAndPredicate (source, predicate);
return source.Provider.Execute<TSource> (
StaticCall (
MakeGeneric (MethodBase.GetCurrentMethod (), typeof (TSource)),
source.Expression,
Expression.Quote (predicate)));
}
#endregion
#region FirstOrDefault
public static TSource FirstOrDefault<TSource> (this IQueryable<TSource> source)
{
Check.Source (source);
return source.Provider.Execute<TSource> (
StaticCall (
MakeGeneric (MethodBase.GetCurrentMethod (), typeof (TSource)),
source.Expression));
}
public static TSource FirstOrDefault<TSource> (this IQueryable<TSource> source, Expression<Func<TSource, bool>> predicate)
{
Check.SourceAndPredicate (source, predicate);
return source.Provider.Execute<TSource> (
StaticCall (
MakeGeneric (MethodBase.GetCurrentMethod (), typeof (TSource)),
source.Expression,
Expression.Quote (predicate)));
}
#endregion
#region GroupBy
public static IQueryable<IGrouping<TKey, TSource>> GroupBy<TSource, TKey> (this IQueryable<TSource> source, Expression<Func<TSource, TKey>> keySelector)
{
Check.SourceAndKeySelector (source, keySelector);
return source.Provider.CreateQuery<IGrouping<TKey, TSource>> (
StaticCall (
MakeGeneric (MethodBase.GetCurrentMethod (), typeof (TSource), typeof (TKey)),
source.Expression,
Expression.Quote (keySelector)));
}
public static IQueryable<IGrouping<TKey, TSource>> GroupBy<TSource, TKey> (this IQueryable<TSource> source, Expression<Func<TSource, TKey>> keySelector, IEqualityComparer<TKey> comparer)
{
Check.SourceAndKeySelector (source, keySelector);
return source.Provider.CreateQuery<IGrouping<TKey, TSource>> (
StaticCall (
MakeGeneric (MethodBase.GetCurrentMethod (), typeof (TSource), typeof (TKey)),
source.Expression,
Expression.Quote (keySelector),
Expression.Constant (comparer)));
}
public static IQueryable<IGrouping<TKey, TElement>> GroupBy<TSource, TKey, TElement> (this IQueryable<TSource> source, Expression<Func<TSource, TKey>> keySelector, Expression<Func<TSource, TElement>> elementSelector)
{
Check.SourceAndKeyElementSelectors (source, keySelector, elementSelector);
return source.Provider.CreateQuery<IGrouping<TKey, TElement>>(
StaticCall (
MakeGeneric (MethodBase.GetCurrentMethod (), typeof (TSource), typeof (TKey), typeof (TElement)),
source.Expression,
Expression.Quote (keySelector),
Expression.Quote (elementSelector)));
}
public static IQueryable<TResult> GroupBy<TSource, TKey, TResult> (this IQueryable<TSource> source, Expression<Func<TSource, TKey>> keySelector, Expression<Func<TKey, IEnumerable<TSource>, TResult>> resultSelector)
{
Check.SourceAndKeyResultSelectors (source, keySelector, resultSelector);
return source.Provider.CreateQuery<TResult> (
StaticCall (
MakeGeneric (MethodBase.GetCurrentMethod (), typeof (TSource), typeof (TKey), typeof (TResult)),
source.Expression,
Expression.Quote (keySelector),
Expression.Quote (resultSelector)));
}
public static IQueryable<IGrouping<TKey, TElement>> GroupBy<TSource, TKey, TElement> (this IQueryable<TSource> source, Expression<Func<TSource, TKey>> keySelector, Expression<Func<TSource, TElement>> elementSelector, IEqualityComparer<TKey> comparer)
{
Check.SourceAndKeyElementSelectors (source, keySelector, elementSelector);
return source.Provider.CreateQuery<IGrouping<TKey, TElement>> (
StaticCall (
MakeGeneric (MethodBase.GetCurrentMethod (), typeof (TSource), typeof (TKey), typeof (TElement)),
source.Expression,
Expression.Quote (keySelector),
Expression.Quote (elementSelector),
Expression.Constant (comparer)));
}
public static IQueryable<TResult> GroupBy<TSource, TKey, TElement, TResult> (this IQueryable<TSource> source, Expression<Func<TSource, TKey>> keySelector, Expression<Func<TSource, TElement>> elementSelector, Expression<Func<TKey, IEnumerable<TElement>, TResult>> resultSelector)
{
Check.GroupBySelectors (source, keySelector, elementSelector, resultSelector);
return source.Provider.CreateQuery<TResult> (
StaticCall (
MakeGeneric (MethodBase.GetCurrentMethod (), typeof (TSource), typeof (TKey), typeof (TElement), typeof (TResult)),
source.Expression,
Expression.Quote (keySelector),
Expression.Quote (elementSelector),
Expression.Quote (resultSelector)));
}
public static IQueryable<TResult> GroupBy<TSource, TKey, TResult> (this IQueryable<TSource> source, Expression<Func<TSource, TKey>> keySelector, Expression<Func<TKey, IEnumerable<TSource>, TResult>> resultSelector, IEqualityComparer<TKey> comparer)
{
Check.SourceAndKeyResultSelectors (source, keySelector, resultSelector);
return source.Provider.CreateQuery<TResult> (
StaticCall (
MakeGeneric (MethodBase.GetCurrentMethod (), typeof (TSource), typeof (TKey), typeof (TResult)),
source.Expression,
Expression.Quote (keySelector),
Expression.Quote (resultSelector),
Expression.Constant (comparer)));
}
public static IQueryable<TResult> GroupBy<TSource, TKey, TElement, TResult> (this IQueryable<TSource> source, Expression<Func<TSource, TKey>> keySelector, Expression<Func<TSource, TElement>> elementSelector, Expression<Func<TKey, IEnumerable<TElement>, TResult>> resultSelector, IEqualityComparer<TKey> comparer)
{
Check.GroupBySelectors (source, keySelector, elementSelector, resultSelector);
return source.Provider.CreateQuery<TResult> (
StaticCall (
MakeGeneric (MethodBase.GetCurrentMethod (), typeof (TSource), typeof (TKey), typeof (TElement), typeof (TResult)),
source.Expression,
Expression.Quote (keySelector),
Expression.Quote (elementSelector),
Expression.Quote (resultSelector),
Expression.Constant (comparer)));
}
#endregion
#region GroupJoin
public static IQueryable<TResult> GroupJoin<TOuter, TInner, TKey, TResult> (this IQueryable<TOuter> outer, IEnumerable<TInner> inner, Expression<Func<TOuter, TKey>> outerKeySelector, Expression<Func<TInner, TKey>> innerKeySelector, Expression<Func<TOuter, IEnumerable<TInner>, TResult>> resultSelector)
{
if (outer == null)
throw new ArgumentNullException ("outer");
if (inner == null)
throw new ArgumentNullException ("inner");
if (outerKeySelector == null)
throw new ArgumentNullException ("outerKeySelector");
if (innerKeySelector == null)
throw new ArgumentNullException ("innerKeySelector");
if (resultSelector == null)
throw new ArgumentNullException ("resultSelector");
return outer.Provider.CreateQuery<TResult> (
StaticCall (
MakeGeneric (MethodBase.GetCurrentMethod (), typeof (TOuter), typeof (TInner), typeof (TKey), typeof (TResult)),
outer.Expression,
Expression.Constant (inner),
Expression.Quote (outerKeySelector),
Expression.Quote (innerKeySelector),
Expression.Quote (resultSelector)));
}
public static IQueryable<TResult> GroupJoin<TOuter, TInner, TKey, TResult> (this IQueryable<TOuter> outer, IEnumerable<TInner> inner, Expression<Func<TOuter, TKey>> outerKeySelector, Expression<Func<TInner, TKey>> innerKeySelector, Expression<Func<TOuter, IEnumerable<TInner>, TResult>> resultSelector, IEqualityComparer<TKey> comparer)
{
if (outer == null)
throw new ArgumentNullException ("outer");
if (inner == null)
throw new ArgumentNullException ("inner");
if (outerKeySelector == null)
throw new ArgumentNullException ("outerKeySelector");
if (innerKeySelector == null)
throw new ArgumentNullException ("innerKeySelector");
if (resultSelector == null)
throw new ArgumentNullException ("resultSelector");
return outer.Provider.CreateQuery<TResult> (
StaticCall (
MakeGeneric (MethodBase.GetCurrentMethod (), typeof (TOuter), typeof (TInner), typeof (TKey), typeof (TResult)),
outer.Expression,
Expression.Constant (inner),
Expression.Quote (outerKeySelector),
Expression.Quote (innerKeySelector),
Expression.Quote (resultSelector),
Expression.Constant (comparer)));
}
#endregion
#region Intersect
public static IQueryable<TSource> Intersect<TSource> (this IQueryable<TSource> source1, IEnumerable<TSource> source2)
{
Check.Source1AndSource2 (source1, source2);
return source1.Provider.CreateQuery<TSource> (
StaticCall (
MakeGeneric (MethodBase.GetCurrentMethod (), typeof (TSource)),
source1.Expression,
Expression.Constant (source2)));
}
public static IQueryable<TSource> Intersect<TSource> (this IQueryable<TSource> source1, IEnumerable<TSource> source2, IEqualityComparer<TSource> comparer)
{
Check.Source1AndSource2 (source1, source2);
return source1.Provider.CreateQuery<TSource> (
StaticCall (
MakeGeneric (MethodBase.GetCurrentMethod (), typeof (TSource)),
source1.Expression,
Expression.Constant (source2),
Expression.Constant (comparer)));
}
#endregion
#region Join
public static IQueryable<TResult> Join<TOuter, TInner, TKey, TResult> (this IQueryable<TOuter> outer, IEnumerable<TInner> inner, Expression<Func<TOuter, TKey>> outerKeySelector, Expression<Func<TInner, TKey>> innerKeySelector, Expression<Func<TOuter, TInner, TResult>> resultSelector)
{
Check.JoinSelectors (outer, inner, outerKeySelector, innerKeySelector, resultSelector);
return outer.Provider.CreateQuery<TResult> (
StaticCall (
MakeGeneric (MethodBase.GetCurrentMethod (), typeof (TOuter), typeof (TInner), typeof (TKey), typeof (TResult)),
outer.Expression,
Expression.Constant (inner),
Expression.Quote (outerKeySelector),
Expression.Quote (innerKeySelector),
Expression.Quote (resultSelector)));
}
public static IQueryable<TResult> Join<TOuter, TInner, TKey, TResult> (this IQueryable<TOuter> outer, IEnumerable<TInner> inner, Expression<Func<TOuter, TKey>> outerKeySelector, Expression<Func<TInner, TKey>> innerKeySelector, Expression<Func<TOuter, TInner, TResult>> resultSelector, IEqualityComparer<TKey> comparer)
{
Check.JoinSelectors (outer, inner, outerKeySelector, innerKeySelector, resultSelector);
return outer.Provider.CreateQuery<TResult> (
StaticCall (
MakeGeneric (MethodBase.GetCurrentMethod (), typeof (TOuter), typeof (TInner), typeof (TKey), typeof (TResult)),
outer.Expression,
Expression.Constant (inner),
Expression.Quote (outerKeySelector),
Expression.Quote (innerKeySelector),
Expression.Quote (resultSelector),
Expression.Constant (comparer)));
}
#endregion
#region Last
public static TSource Last<TSource> (this IQueryable<TSource> source)
{
Check.Source (source);
return source.Provider.Execute<TSource> (
StaticCall (
MakeGeneric (MethodBase.GetCurrentMethod (), typeof (TSource)),
source.Expression));
}
public static TSource Last<TSource> (this IQueryable<TSource> source, Expression<Func<TSource, bool>> predicate)
{
Check.SourceAndPredicate (source, predicate);
return source.Provider.Execute<TSource> (
StaticCall (
MakeGeneric (MethodBase.GetCurrentMethod (), typeof (TSource)),
source.Expression,
Expression.Quote (predicate)));
}
#endregion
#region LastOrDefault
public static TSource LastOrDefault<TSource> (this IQueryable<TSource> source)
{
Check.Source (source);
return source.Provider.Execute<TSource> (
StaticCall (
MakeGeneric (MethodBase.GetCurrentMethod (), typeof (TSource)),
source.Expression));
}
public static TSource LastOrDefault<TSource> (this IQueryable<TSource> source, Expression<Func<TSource, bool>> predicate)
{
Check.SourceAndPredicate (source, predicate);
return source.Provider.Execute<TSource> (
StaticCall (
MakeGeneric (MethodBase.GetCurrentMethod (), typeof (TSource)),
source.Expression,
Expression.Quote (predicate)));
}
#endregion
#region LongCount
public static long LongCount<TSource> (this IQueryable<TSource> source)
{
Check.Source (source);
return source.Execute<long, TSource> (MethodBase.GetCurrentMethod ());
}
public static long LongCount<TSource> (this IQueryable<TSource> source, Expression<Func<TSource, bool>> predicate)
{
Check.SourceAndPredicate (source, predicate);
return source.Provider.Execute<long> (
StaticCall (
MakeGeneric (MethodBase.GetCurrentMethod (), typeof (TSource)),
source.Expression,
Expression.Quote (predicate)));
}
#endregion
#region Max
public static TSource Max<TSource> (this IQueryable<TSource> source)
{
Check.Source (source);
return source.Provider.Execute<TSource> (
StaticCall (
MakeGeneric (MethodBase.GetCurrentMethod (), typeof (TSource)),
source.Expression));
}
public static TResult Max<TSource, TResult> (this IQueryable<TSource> source, Expression<Func<TSource, TResult>> selector)
{
Check.Source (source);
return source.Provider.Execute<TResult> (
StaticCall (
MakeGeneric (MethodBase.GetCurrentMethod (), typeof (TSource), typeof (TResult)),
source.Expression,
Expression.Quote (selector)));
}
#endregion
#region Min
public static TSource Min<TSource> (this IQueryable<TSource> source)
{
Check.Source (source);
return source.Provider.Execute<TSource> (
StaticCall (
MakeGeneric (MethodBase.GetCurrentMethod (), typeof (TSource)),
source.Expression));
}
public static TResult Min<TSource, TResult> (this IQueryable<TSource> source, Expression<Func<TSource, TResult>> selector)
{
Check.SourceAndSelector (source, selector);
return source.Provider.Execute<TResult> (
StaticCall (
MakeGeneric (MethodBase.GetCurrentMethod (), typeof (TSource), typeof (TResult)),
source.Expression,
Expression.Quote (selector)));
}
#endregion
#region OfType
public static IQueryable<TResult> OfType<TResult> (this IQueryable source)
{
Check.Source (source);
return (IQueryable<TResult>) source.Provider.CreateQuery (
StaticCall (
MakeGeneric (MethodBase.GetCurrentMethod (), typeof (TResult)),
source.Expression));
}
#endregion
#region OrderBy
public static IOrderedQueryable<TSource> OrderBy<TSource, TKey> (this IQueryable<TSource> source, Expression<Func<TSource, TKey>> keySelector)
{
Check.SourceAndKeySelector (source, keySelector);
return (IOrderedQueryable<TSource>) source.Provider.CreateQuery<TSource> (
StaticCall (
MakeGeneric (MethodBase.GetCurrentMethod (), typeof (TSource), typeof (TKey)),
source.Expression,
Expression.Quote (keySelector)));
}
public static IOrderedQueryable<TSource> OrderBy<TSource, TKey> (this IQueryable<TSource> source, Expression<Func<TSource, TKey>> keySelector, IComparer<TKey> comparer)
{
Check.SourceAndKeySelector (source, keySelector);
return (IOrderedQueryable<TSource>) source.Provider.CreateQuery<TSource> (
StaticCall (
MakeGeneric (MethodBase.GetCurrentMethod (), typeof (TSource), typeof (TKey)),
source.Expression,
Expression.Quote (keySelector),
Expression.Constant (comparer)));
}
#endregion
#region OrderByDescending
public static IOrderedQueryable<TSource> OrderByDescending<TSource, TKey> (this IQueryable<TSource> source, Expression<Func<TSource, TKey>> keySelector)
{
Check.SourceAndKeySelector (source, keySelector);
return (IOrderedQueryable<TSource>) source.Provider.CreateQuery<TSource> (
StaticCall (
MakeGeneric (MethodBase.GetCurrentMethod (), typeof (TSource), typeof (TKey)),
source.Expression,
Expression.Quote (keySelector)));
}
public static IOrderedQueryable<TSource> OrderByDescending<TSource, TKey> (this IQueryable<TSource> source, Expression<Func<TSource, TKey>> keySelector, IComparer<TKey> comparer)
{
Check.SourceAndKeySelector (source, keySelector);
return (IOrderedQueryable<TSource>) source.Provider.CreateQuery<TSource> (
StaticCall (
MakeGeneric (MethodBase.GetCurrentMethod (), typeof (TSource), typeof (TKey)),
source.Expression,
Expression.Quote (keySelector),
Expression.Constant (comparer)));
}
#endregion
#region Reverse
public static IQueryable<TSource> Reverse<TSource> (this IQueryable<TSource> source)
{
Check.Source (source);
return source.Provider.CreateQuery<TSource> (
StaticCall (
MakeGeneric (MethodBase.GetCurrentMethod (), typeof (TSource)),
source.Expression));
}
#endregion
#region Select
public static IQueryable<TResult> Select<TSource, TResult> (this IQueryable<TSource> source, Expression<Func<TSource, TResult>> selector)
{
Check.SourceAndSelector (source, selector);
return source.Provider.CreateQuery<TResult> (
StaticCall (
MakeGeneric (MethodBase.GetCurrentMethod (), typeof (TSource), typeof (TResult)),
source.Expression,
Expression.Quote (selector)));
}
public static IQueryable<TResult> Select<TSource, TResult> (this IQueryable<TSource> source, Expression<Func<TSource, int, TResult>> selector)
{
Check.SourceAndSelector (source, selector);
return source.Provider.CreateQuery<TResult> (
StaticCall (
MakeGeneric (MethodBase.GetCurrentMethod (), typeof (TSource), typeof (TResult)),
source.Expression,
Expression.Quote (selector)));
}
#endregion
#region SelectMany
public static IQueryable<TResult> SelectMany<TSource, TResult> (this IQueryable<TSource> source, Expression<Func<TSource, IEnumerable<TResult>>> selector)
{
Check.SourceAndSelector (source, selector);
return source.Provider.CreateQuery<TResult> (
StaticCall (
MakeGeneric (MethodBase.GetCurrentMethod (), typeof (TSource), typeof (TResult)),
source.Expression,
Expression.Quote (selector)));
}
public static IQueryable<TResult> SelectMany<TSource, TResult> (this IQueryable<TSource> source, Expression<Func<TSource, int, IEnumerable<TResult>>> selector)
{
Check.SourceAndSelector (source, selector);
return source.Provider.CreateQuery<TResult> (
StaticCall (
MakeGeneric (MethodBase.GetCurrentMethod (), typeof (TSource), typeof (TResult)),
source.Expression,
Expression.Quote (selector)));
}
public static IQueryable<TResult> SelectMany<TSource, TCollection, TResult> (this IQueryable<TSource> source, Expression<Func<TSource, int, IEnumerable<TCollection>>> collectionSelector, Expression<Func<TSource, TCollection, TResult>> resultSelector)
{
Check.SourceAndCollectionSelectorAndResultSelector (source, collectionSelector, resultSelector);
return source.Provider.CreateQuery<TResult> (
StaticCall (
MakeGeneric (MethodBase.GetCurrentMethod (), typeof (TSource), typeof (TCollection), typeof (TResult)),
source.Expression,
Expression.Quote (collectionSelector),
Expression.Quote (resultSelector)));
}
public static IQueryable<TResult> SelectMany<TSource, TCollection, TResult> (this IQueryable<TSource> source, Expression<Func<TSource, IEnumerable<TCollection>>> collectionSelector, Expression<Func<TSource, TCollection, TResult>> resultSelector)
{
Check.SourceAndCollectionSelectorAndResultSelector (source, collectionSelector, resultSelector);
return source.Provider.CreateQuery<TResult> (
StaticCall (
MakeGeneric (MethodBase.GetCurrentMethod (), typeof (TSource), typeof (TCollection), typeof (TResult)),
source.Expression,
Expression.Quote (collectionSelector),
Expression.Quote (resultSelector)));
}
#endregion
#region SequenceEqual
public static bool SequenceEqual<TSource> (this IQueryable<TSource> source1, IEnumerable<TSource> source2)
{
Check.Source1AndSource2 (source1, source2);
return source1.Provider.Execute<bool> (
StaticCall (
MakeGeneric (MethodBase.GetCurrentMethod (), typeof (TSource)),
source1.Expression,
Expression.Constant (source2)));
}
public static bool SequenceEqual<TSource> (this IQueryable<TSource> source1, IEnumerable<TSource> source2, IEqualityComparer<TSource> comparer)
{
Check.Source1AndSource2 (source1, source2);
return source1.Provider.Execute<bool> (
StaticCall (
MakeGeneric (MethodBase.GetCurrentMethod (), typeof (TSource)),
source1.Expression,
Expression.Constant (source2),
Expression.Constant (comparer)));
}
#endregion
#region Single
public static TSource Single<TSource> (this IQueryable<TSource> source)
{
Check.Source (source);
return source.Provider.Execute<TSource> (
StaticCall (
MakeGeneric (MethodBase.GetCurrentMethod (), typeof (TSource)),
source.Expression));
}
public static TSource Single<TSource> (this IQueryable<TSource> source, Expression<Func<TSource, bool>> predicate)
{
Check.SourceAndPredicate (source, predicate);
return source.Provider.Execute<TSource> (
StaticCall (
MakeGeneric (MethodBase.GetCurrentMethod (), typeof (TSource)),
source.Expression,
Expression.Quote (predicate)));
}
#endregion
#region SingleOrDefault
public static TSource SingleOrDefault<TSource> (this IQueryable<TSource> source)
{
Check.Source (source);
return source.Provider.Execute<TSource> (
StaticCall (
MakeGeneric (MethodBase.GetCurrentMethod (), typeof (TSource)),
source.Expression));
}
public static TSource SingleOrDefault<TSource> (this IQueryable<TSource> source, Expression<Func<TSource, bool>> predicate)
{
Check.SourceAndPredicate (source, predicate);
return source.Provider.Execute<TSource> (
StaticCall (
MakeGeneric (MethodBase.GetCurrentMethod (), typeof (TSource)),
source.Expression,
Expression.Quote (predicate)));
}
#endregion
#region Skip
public static IQueryable<TSource> Skip<TSource> (this IQueryable<TSource> source, int count)
{
Check.Source (source);
return source.Provider.CreateQuery<TSource> (
StaticCall (
MakeGeneric (MethodBase.GetCurrentMethod (), typeof (TSource)),
source.Expression,
Expression.Constant (count)));
}
#endregion
#region SkipWhile
public static IQueryable<TSource> SkipWhile<TSource> (this IQueryable<TSource> source, Expression<Func<TSource, bool>> predicate)
{
Check.SourceAndPredicate (source, predicate);
return source.Provider.CreateQuery<TSource> (
StaticCall (
MakeGeneric (MethodBase.GetCurrentMethod (), typeof (TSource)),
source.Expression,
Expression.Quote (predicate)));
}
public static IQueryable<TSource> SkipWhile<TSource> (this IQueryable<TSource> source, Expression<Func<TSource, int, bool>> predicate)
{
Check.SourceAndPredicate (source, predicate);
return source.Provider.CreateQuery<TSource> (
StaticCall (
MakeGeneric (MethodBase.GetCurrentMethod (), typeof (TSource)),
source.Expression,
Expression.Quote (predicate)));
}
#endregion
#region Sum
public static int Sum<TSource> (this IQueryable<TSource> source, Expression<Func<TSource, int>> selector)
{
Check.SourceAndSelector (source, selector);
return source.Provider.Execute<int> (
StaticCall (
MakeGeneric (MethodBase.GetCurrentMethod (), typeof (TSource)),
source.Expression,
Expression.Quote (selector)));
}
public static int? Sum<TSource> (this IQueryable<TSource> source, Expression<Func<TSource, int?>> selector)
{
Check.SourceAndSelector (source, selector);
return source.Provider.Execute<int?> (
StaticCall (
MakeGeneric (MethodBase.GetCurrentMethod (), typeof (TSource)),
source.Expression,
Expression.Quote (selector)));
}
public static long Sum<TSource> (this IQueryable<TSource> source, Expression<Func<TSource, long>> selector)
{
Check.SourceAndSelector (source, selector);
return source.Provider.Execute<long> (
StaticCall (
MakeGeneric (MethodBase.GetCurrentMethod (), typeof (TSource)),
source.Expression,
Expression.Quote (selector)));
}
public static long? Sum<TSource> (this IQueryable<TSource> source, Expression<Func<TSource, long?>> selector)
{
Check.SourceAndSelector (source, selector);
return source.Provider.Execute<long?> (
StaticCall (
MakeGeneric (MethodBase.GetCurrentMethod (), typeof (TSource)),
source.Expression,
Expression.Quote (selector)));
}
public static float Sum<TSource> (this IQueryable<TSource> source, Expression<Func<TSource, float>> selector)
{
Check.SourceAndSelector (source, selector);
return source.Provider.Execute<float> (
StaticCall (
MakeGeneric (MethodBase.GetCurrentMethod (), typeof (TSource)),
source.Expression,
Expression.Quote (selector)));
}
public static float? Sum<TSource> (this IQueryable<TSource> source, Expression<Func<TSource, float?>> selector)
{
Check.SourceAndSelector (source, selector);
return source.Provider.Execute<float?> (
StaticCall (
MakeGeneric (MethodBase.GetCurrentMethod (), typeof (TSource)),
source.Expression,
Expression.Quote (selector)));
}
public static double Sum<TSource> (this IQueryable<TSource> source, Expression<Func<TSource, double>> selector)
{
Check.SourceAndSelector (source, selector);
return source.Provider.Execute<double> (
StaticCall (
MakeGeneric (MethodBase.GetCurrentMethod (), typeof (TSource)),
source.Expression,
Expression.Quote (selector)));
}
public static double? Sum<TSource> (this IQueryable<TSource> source, Expression<Func<TSource, double?>> selector)
{
Check.SourceAndSelector (source, selector);
return source.Provider.Execute<double?> (
StaticCall (
MakeGeneric (MethodBase.GetCurrentMethod (), typeof (TSource)),
source.Expression,
Expression.Quote (selector)));
}
public static decimal Sum<TSource> (this IQueryable<TSource> source, Expression<Func<TSource, decimal>> selector)
{
Check.SourceAndSelector (source, selector);
return source.Provider.Execute<decimal> (
StaticCall (
MakeGeneric (MethodBase.GetCurrentMethod (), typeof (TSource)),
source.Expression,
Expression.Quote (selector)));
}
public static decimal? Sum<TSource> (this IQueryable<TSource> source, Expression<Func<TSource, decimal?>> selector)
{
Check.SourceAndSelector (source, selector);
return source.Provider.Execute<decimal?> (
StaticCall (
MakeGeneric (MethodBase.GetCurrentMethod (), typeof (TSource)),
source.Expression,
Expression.Quote (selector)));
}
public static int Sum (this IQueryable<int> source)
{
Check.Source (source);
return source.Provider.Execute<int> (
StaticCall (
(MethodInfo) MethodBase.GetCurrentMethod (),
source.Expression));
}
public static int? Sum (this IQueryable<int?> source)
{
Check.Source (source);
return source.Provider.Execute<int?> (
StaticCall (
(MethodInfo) MethodBase.GetCurrentMethod (),
source.Expression));
}
public static long Sum (this IQueryable<long> source)
{
Check.Source (source);
return source.Provider.Execute<long> (
StaticCall (
(MethodInfo) MethodBase.GetCurrentMethod (),
source.Expression));
}
public static long? Sum (this IQueryable<long?> source)
{
Check.Source (source);
return source.Provider.Execute<long?> (
StaticCall (
(MethodInfo) MethodBase.GetCurrentMethod (),
source.Expression));
}
public static float Sum (this IQueryable<float> source)
{
Check.Source (source);
return source.Provider.Execute<float> (
StaticCall (
(MethodInfo) MethodBase.GetCurrentMethod (),
source.Expression));
}
public static float? Sum (this IQueryable<float?> source)
{
Check.Source (source);
return source.Provider.Execute<float?> (
StaticCall (
(MethodInfo) MethodBase.GetCurrentMethod (),
source.Expression));
}
public static double Sum (this IQueryable<double> source)
{
Check.Source (source);
return source.Provider.Execute<double> (
StaticCall (
(MethodInfo) MethodBase.GetCurrentMethod (),
source.Expression));
}
public static double? Sum (this IQueryable<double?> source)
{
Check.Source (source);
return source.Provider.Execute<double?> (
StaticCall (
(MethodInfo) MethodBase.GetCurrentMethod (),
source.Expression));
}
public static decimal Sum (this IQueryable<decimal> source)
{
Check.Source (source);
return source.Provider.Execute<decimal> (
StaticCall (
(MethodInfo) MethodBase.GetCurrentMethod (),
source.Expression));
}
public static decimal? Sum (this IQueryable<decimal?> source)
{
Check.Source (source);
return source.Provider.Execute<decimal?> (
StaticCall (
(MethodInfo) MethodBase.GetCurrentMethod (),
source.Expression));
}
#endregion
#region Take
public static IQueryable<TSource> Take<TSource> (this IQueryable<TSource> source, int count)
{
Check.Source (source);
return source.Provider.CreateQuery<TSource> (
StaticCall (
MakeGeneric (MethodBase.GetCurrentMethod (), typeof (TSource)),
source.Expression,
Expression.Constant (count)));
}
#endregion
#region TakeWhile
public static IQueryable<TSource> TakeWhile<TSource> (this IQueryable<TSource> source, Expression<Func<TSource, bool>> predicate)
{
Check.SourceAndPredicate (source, predicate);
return source.Provider.CreateQuery<TSource> (
StaticCall (
MakeGeneric (MethodBase.GetCurrentMethod (), typeof (TSource)),
source.Expression,
Expression.Quote (predicate)));
}
public static IQueryable<TSource> TakeWhile<TSource> (this IQueryable<TSource> source, Expression<Func<TSource, int, bool>> predicate)
{
Check.SourceAndPredicate (source, predicate);
return source.Provider.CreateQuery<TSource> (
StaticCall (
MakeGeneric (MethodBase.GetCurrentMethod (), typeof (TSource)),
source.Expression,
Expression.Quote (predicate)));
}
#endregion
#region ThenBy
public static IOrderedQueryable<TSource> ThenBy<TSource, TKey> (this IOrderedQueryable<TSource> source, Expression<Func<TSource, TKey>> keySelector)
{
Check.SourceAndKeySelector (source, keySelector);
return (IOrderedQueryable<TSource>) source.Provider.CreateQuery (
StaticCall (
MakeGeneric (MethodBase.GetCurrentMethod (), typeof (TSource), typeof (TKey)),
source.Expression,
Expression.Quote (keySelector)));
}
public static IOrderedQueryable<TSource> ThenBy<TSource, TKey> (this IOrderedQueryable<TSource> source, Expression<Func<TSource, TKey>> keySelector, IComparer<TKey> comparer)
{
Check.SourceAndKeySelector (source, keySelector);
return (IOrderedQueryable<TSource>) source.Provider.CreateQuery (
StaticCall (
MakeGeneric (MethodBase.GetCurrentMethod (), typeof (TSource), typeof (TKey)),
source.Expression,
Expression.Quote (keySelector),
Expression.Constant (comparer)));
}
#endregion
#region ThenByDescending
public static IOrderedQueryable<TSource> ThenByDescending<TSource, TKey> (this IOrderedQueryable<TSource> source, Expression<Func<TSource, TKey>> keySelector)
{
Check.SourceAndKeySelector (source, keySelector);
return (IOrderedQueryable<TSource>) source.Provider.CreateQuery (
StaticCall (
MakeGeneric (MethodBase.GetCurrentMethod (), typeof (TSource), typeof (TKey)),
source.Expression,
Expression.Quote (keySelector)));
}
public static IOrderedQueryable<TSource> ThenByDescending<TSource, TKey> (this IOrderedQueryable<TSource> source, Expression<Func<TSource, TKey>> keySelector, IComparer<TKey> comparer)
{
Check.SourceAndKeySelector (source, keySelector);
return (IOrderedQueryable<TSource>) source.Provider.CreateQuery (
StaticCall (
MakeGeneric (MethodBase.GetCurrentMethod (), typeof (TSource), typeof (TKey)),
source.Expression,
Expression.Quote (keySelector),
Expression.Constant (comparer)));
}
#endregion
#region Union
public static IQueryable<TSource> Union<TSource> (this IQueryable<TSource> source1, IEnumerable<TSource> source2)
{
Check.Source1AndSource2 (source1, source2);
return source1.Provider.CreateQuery<TSource> (
StaticCall (
MakeGeneric (MethodBase.GetCurrentMethod (), typeof (TSource)),
source1.Expression,
Expression.Constant (source2)));
}
public static IQueryable<TSource> Union<TSource>(this IQueryable<TSource> source1, IEnumerable<TSource> source2, IEqualityComparer<TSource> comparer)
{
Check.Source1AndSource2 (source1, source2);
return source1.Provider.CreateQuery<TSource> (
StaticCall (
MakeGeneric (MethodBase.GetCurrentMethod (), typeof (TSource)),
source1.Expression,
Expression.Constant (source2),
Expression.Constant (comparer)));
}
#endregion
#region Where
public static IQueryable<TSource> Where<TSource> (this IQueryable<TSource> source, Expression<Func<TSource, bool>> predicate)
{
Check.SourceAndPredicate (source, predicate);
return source.Provider.CreateQuery<TSource> (
StaticCall (
MakeGeneric (MethodBase.GetCurrentMethod (), typeof (TSource)),
source.Expression,
Expression.Quote (predicate)));
}
public static IQueryable<TSource> Where<TSource> (this IQueryable<TSource> source, Expression<Func<TSource, int, bool>> predicate)
{
Check.SourceAndPredicate (source, predicate);
return source.Provider.CreateQuery<TSource> (
StaticCall (
MakeGeneric (MethodBase.GetCurrentMethod (), typeof (TSource)),
source.Expression,
Expression.Quote (predicate)));
}
#endregion
#if NET_4_0
#region Zip
public static IQueryable<TResult> Zip<TFirst, TSecond, TResult> (this IQueryable<TFirst> source1, IEnumerable<TSecond> source2, Expression<Func<TFirst, TSecond, TResult>> resultSelector)
{
Check.Source1AndSource2 (source1, source2);
if (resultSelector == null)
throw new ArgumentNullException ("resultSelector");
return source1.Provider.CreateQuery<TResult> (
StaticCall (
MakeGeneric (MethodBase.GetCurrentMethod (), typeof (TFirst), typeof (TSecond), typeof (TResult)),
source1.Expression,
Expression.Quote (resultSelector)));
}
#endregion
#endif
}
}
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