diff options
| author | Jb Evain <jbevain@gmail.com> | 2007-12-12 18:15:27 +0300 |
|---|---|---|
| committer | Jb Evain <jbevain@gmail.com> | 2007-12-12 18:15:27 +0300 |
| commit | 157e653f540a058099d50125950d90bc2563d491 (patch) | |
| tree | d2bba751900c3a6d3bc58f6aa799cf65edcb851e /mcs/class/System.Core/System.Linq/Queryable.cs | |
| parent | f3422a1f2b68b7cf560ce45745ec382e95fcbce0 (diff) | |
remove non sensical code
svn path=/trunk/mcs/; revision=91155
Diffstat (limited to 'mcs/class/System.Core/System.Linq/Queryable.cs')
| -rw-r--r-- | mcs/class/System.Core/System.Linq/Queryable.cs | 3592 |
1 files changed, 808 insertions, 2784 deletions
diff --git a/mcs/class/System.Core/System.Linq/Queryable.cs b/mcs/class/System.Core/System.Linq/Queryable.cs index 7e663509f49..2b460f80cf8 100644 --- a/mcs/class/System.Core/System.Linq/Queryable.cs +++ b/mcs/class/System.Core/System.Linq/Queryable.cs @@ -1,3 +1,13 @@ +// +// Queryable.cs +// +// Authors: +// Marek Safar (marek.safar@gmail.com) +// Alejandro Serrano "Serras" (trupill@yahoo.es) +// Jb Evain (jbevain@novell.com) +// +// Copyright (C) 2007 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 @@ -5,2824 +15,838 @@ // 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 -// -// Authors: -// Alejandro Serrano "Serras" (trupill@yahoo.es) -// Marek Safar (marek.safar@gmail.com) +// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. // using System; using System.Collections.Generic; using System.Linq.Expressions; +using System.Reflection; -namespace System.Linq -{ - public static class Queryable - { - #region Count - - public static int Count<TSource> (this IQueryable<TSource> source) - { - if (source == null) - throw new ArgumentNullException (); - - if (source is ICollection<TSource>) - return ((ICollection<TSource>)source).Count; - - int counter = 0; - foreach (TSource element in source) - counter++; - return counter; - } - - public static int Count<TSource> ( - this IQueryable<TSource> source, - Func<TSource, bool> selector) - { - if (source == null || selector == null) - throw new ArgumentNullException (); - - int counter = 0; - foreach (TSource element in source) - if (selector(element)) - counter++; - - return counter; - } - - #endregion - - #region LongCount - - public static long LongCount<TSource> (this IQueryable<TSource> source) - { - if (source == null) - throw new ArgumentNullException (); - - long counter = 0; - foreach (TSource element in source) - counter++; - return counter; - } - - public static long LongCount<TSource> ( - this IQueryable<TSource> source, - Func<TSource, bool> selector) - { - if (source == null || selector == null) - throw new ArgumentNullException (); - - long counter = 0; - foreach (TSource element in source) - if (selector(element)) - counter++; - - return counter; - } - - #endregion - - #region Sum - - public static int Sum (this IQueryable<int> source) - { - if (source == null) - throw new ArgumentNullException (); - - int sum = 0; - foreach (int element in source) - sum += element; - - return sum; - } - - public static int Sum<TSource> ( - this IQueryable<TSource> source, - Func<TSource, int> selector) - { - if (source == null || selector == null) - throw new ArgumentNullException (); - - int sum = 0; - foreach (TSource element in source) - sum += selector (element); - - return sum; - } - - public static int? Sum (this IQueryable<int?> source) - { - if (source == null) - throw new ArgumentNullException (); - - int? sum = 0; - foreach (int? element in source) - if (element.HasValue) - sum += element.Value; - - return sum; - } - - public static int? Sum<TSource> ( - this IQueryable<TSource> source, - Func<TSource, int?> selector) - { - if (source == null || selector == null) - throw new ArgumentNullException (); - - int? sum = 0; - foreach (TSource element in source) { - int? item = selector (element); - if (item.HasValue) - sum += item.Value; - } - - return sum; - } +namespace System.Linq { - public static long Sum (this IQueryable<long> source) - { - if (source == null) - throw new ArgumentNullException (); - - long sum = 0; - foreach (long element in source) - sum += element; - - return sum; - } - - public static long Sum<TSource> ( - this IQueryable<TSource> source, - Func<TSource, long> selector) - { - if (source == null || selector == null) - throw new ArgumentNullException (); - - long sum = 0; - foreach (TSource element in source) - sum += selector (element); - - return sum; - } - - public static long? Sum (this IQueryable<long?> source) - { - if (source == null) - throw new ArgumentNullException (); - - long? sum = 0; - foreach (long? element in source) - if (element.HasValue) - sum += element.Value; - - return sum; - } - - public static long? Sum<TSource> ( - this IQueryable<TSource> source, - Func<TSource, long?> selector) - { - if (source == null || selector == null) - throw new ArgumentNullException (); - - long? sum = 0; - foreach (TSource element in source) { - long? item = selector (element); - if (item.HasValue) - sum += item.Value; - } - - return sum; - } - - public static double Sum (this IQueryable<double> source) - { - if (source == null) - throw new ArgumentNullException (); - - double sum = 0; - foreach (double element in source) - sum += element; - - return sum; - } - - public static double Sum<TSource> ( - this IQueryable<TSource> source, - Func<TSource, double> selector) - { - if (source == null || selector == null) - throw new ArgumentNullException (); - - double sum = 0; - foreach (TSource element in source) - sum += selector (element); - - return sum; - } - - public static double? Sum (this IQueryable<double?> source) - { - if (source == null) - throw new ArgumentNullException (); - - double? sum = 0; - foreach (double? element in source) - if (element.HasValue) - sum += element.Value; - - return sum; - } - - public static double? Sum<TSource> ( - this IQueryable<TSource> source, - Func<TSource, double?> selector) - { - if (source == null || selector == null) - throw new ArgumentNullException (); - - double? sum = 0; - foreach (TSource element in source) { - double? item = selector (element); - if (item.HasValue) - sum += item.Value; - } - - return sum; - } - - public static decimal Sum (this IQueryable<decimal> source) - { - if (source == null) - throw new ArgumentNullException (); - - decimal sum = 0; - foreach (decimal element in source) - sum += element; - - return sum; - } - - public static decimal Sum<TSource> ( - this IQueryable<TSource> source, - Func<TSource, decimal> selector) - { - if (source == null || selector == null) - throw new ArgumentNullException (); - - decimal sum = 0; - foreach (TSource element in source) - sum += selector (element); - - return sum; - } - - public static decimal? Sum (this IQueryable<decimal?> source) - { - if (source == null) - throw new ArgumentNullException (); - - decimal? sum = 0; - foreach (decimal? element in source) - if (element.HasValue) - sum += element.Value; - - return sum; - } - - public static decimal? Sum<TSource> ( - this IQueryable<TSource> source, - Func<TSource, decimal?> selector) - { - if (source == null || selector == null) - throw new ArgumentNullException (); - - decimal? sum = 0; - foreach (TSource element in source) { - decimal? item = selector (element); - if (item.HasValue) - sum += item.Value; - } - - return sum; - } - - #endregion - - #region Min - - public static int Min (this IQueryable<int> source) - { - if (source == null) - throw new ArgumentNullException (); - - int minimum = int.MaxValue; - int counter = 0; - foreach (int element in source) { - if (element < minimum) - minimum = element; - counter++; - } - - if (counter == 0) - throw new InvalidOperationException (); - else - return minimum; - } - - public static int? Min (this IQueryable<int?> source) - { - if (source == null) - throw new ArgumentNullException (); - - bool onlyNull = true; - int? minimum = int.MaxValue; - foreach (int? element in source) { - if (element.HasValue) { - onlyNull = false; - if (element < minimum) - minimum = element; - } - } - return (onlyNull ? null : minimum); - } - - public static long Min (this IQueryable<long> source) - { - if (source == null) - throw new ArgumentNullException (); - - long minimum = long.MaxValue; - int counter = 0; - foreach (long element in source) { - if (element < minimum) - minimum = element; - counter++; - } - - if (counter == 0) - throw new InvalidOperationException (); - else - return minimum; - } - - public static long? Min (this IQueryable<long?> source) - { - if (source == null) - throw new ArgumentNullException (); - - bool onlyNull = true; - long? minimum = long.MaxValue; - foreach (long? element in source) { - if (element.HasValue) { - onlyNull = false; - if (element < minimum) - minimum = element; - } - } - return (onlyNull ? null : minimum); - } - - public static double Min (this IQueryable<double> source) - { - if (source == null) - throw new ArgumentNullException (); - - double minimum = double.MaxValue; - int counter = 0; - foreach (double element in source) { - if (element < minimum) - minimum = element; - counter++; - } - - if (counter == 0) - throw new InvalidOperationException (); - else - return minimum; - } - - public static double? Min (this IQueryable<double?> source) - { - if (source == null) - throw new ArgumentNullException (); - - bool onlyNull = true; - double? minimum = double.MaxValue; - foreach (double? element in source) { - if (element.HasValue) { - onlyNull = false; - if (element < minimum) - minimum = element; - } - } - return (onlyNull ? null : minimum); - } - - public static decimal Min (this IQueryable<decimal> source) - { - if (source == null) - throw new ArgumentNullException (); - - decimal minimum = decimal.MaxValue; - int counter = 0; - foreach (decimal element in source) { - if (element < minimum) - minimum = element; - counter++; - } - - if (counter == 0) - throw new InvalidOperationException (); - else - return minimum; - } - - public static decimal? Min (this IQueryable<decimal?> source) - { - if (source == null) - throw new ArgumentNullException (); - - bool onlyNull = true; - decimal? minimum = decimal.MaxValue; - foreach (decimal? element in source) { - if (element.HasValue) { - onlyNull = false; - if (element < minimum) - minimum = element; - } - } - return (onlyNull ? null : minimum); - } - - public static TSource Min<TSource> (this IQueryable<TSource> source) - { - if (source == null) - throw new ArgumentNullException (); - - bool notAssigned = true; - TSource minimum = default (TSource); - int counter = 0; - foreach (TSource element in source) { - if (notAssigned) { - minimum = element; - notAssigned = false; - } - else { - int comparison; - if (element is IComparable<TSource>) - comparison = ((IComparable<TSource>)element).CompareTo (minimum); - else if (element is System.IComparable) - comparison = ((System.IComparable)element).CompareTo (minimum); - else - throw new ArgumentNullException(); - - if (comparison < 0) - minimum = element; - } - counter++; - } - - if (counter == 0) - throw new InvalidOperationException (); - else - return minimum; - } - - public static int Min<TSource> ( - this IQueryable<TSource> source, - Func<TSource, int> selector) - { - if (source == null || selector == null) - throw new ArgumentNullException (); - - int minimum = int.MaxValue; - int counter = 0; - foreach (TSource item in source) { - int element = selector (item); - if (element < minimum) - minimum = element; - counter++; - } - - if (counter == 0) - throw new InvalidOperationException (); - else - return minimum; - } - - public static int? Min<TSource> ( - this IQueryable<TSource> source, - Func<TSource, int?> selector) - { - if (source == null || selector == null) - throw new ArgumentNullException (); - - bool onlyNull = true; - int? minimum = int.MaxValue; - foreach (TSource item in source) { - int? element = selector (item); - if (element.HasValue) { - onlyNull = false; - if (element < minimum) - minimum = element; - } - } - return (onlyNull ? null : minimum); - } - - public static long Min<TSource> ( - this IQueryable<TSource> source, - Func<TSource, long> selector) - { - if (source == null || selector == null) - throw new ArgumentNullException (); - - long minimum = long.MaxValue; - int counter = 0; - foreach (TSource item in source) { - long element = selector (item); - if (element < minimum) - minimum = element; - counter++; - } - - if (counter == 0) - throw new InvalidOperationException (); - else - return minimum; - } - - public static long? Min<TSource> ( - this IQueryable<TSource> source, - Func<TSource, long?> selector) - { - if (source == null || selector == null) - throw new ArgumentNullException (); - - bool onlyNull = true; - long? minimum = long.MaxValue; - foreach (TSource item in source) { - long? element = selector (item); - if (element.HasValue) { - onlyNull = false; - if (element < minimum) - minimum = element; - } - } - return (onlyNull ? null : minimum); - } - - public static double Min<TSource> ( - this IQueryable<TSource> source, - Func<TSource, double> selector) - { - if (source == null || selector == null) - throw new ArgumentNullException (); - - double minimum = double.MaxValue; - int counter = 0; - foreach (TSource item in source) - { - double element = selector (item); - if (element < minimum) - minimum = element; - counter++; - } - - if (counter == 0) - throw new InvalidOperationException (); - else - return minimum; - } - - public static double? Min<TSource> ( - this IQueryable<TSource> source, - Func<TSource, double?> selector) - { - if (source == null || selector == null) - throw new ArgumentNullException (); - - bool onlyNull = true; - double? minimum = double.MaxValue; - foreach (TSource item in source) { - double? element = selector (item); - if (element.HasValue) { - onlyNull = false; - if (element < minimum) - minimum = element; - } - } - return (onlyNull ? null : minimum); - } - - public static decimal Min<TSource> ( - this IQueryable<TSource> source, - Func<TSource, decimal> selector) - { - if (source == null || selector == null) - throw new ArgumentNullException (); - - decimal minimum = decimal.MaxValue; - int counter = 0; - foreach (TSource item in source) { - decimal element = selector (item); - if (element < minimum) - minimum = element; - counter++; - } - - if (counter == 0) - throw new InvalidOperationException (); - else - return minimum; - } - - public static decimal? Min<TSource> ( - this IQueryable<TSource> source, - Func<TSource, decimal?> selector) - { - if (source == null || selector == null) - throw new ArgumentNullException (); - - bool onlyNull = true; - decimal? minimum = decimal.MaxValue; - foreach (TSource item in source) { - decimal? element = selector (item); - if (element.HasValue) { - onlyNull = false; - if (element < minimum) - minimum = element; - } - } - return (onlyNull ? null : minimum); - } - - public static TResult Min<TSource, TResult> ( - this IQueryable<TSource> source, - Func<TSource, TResult> selector) - { - if (source == null || selector == null) - throw new ArgumentNullException (); - - bool notAssigned = true; - TResult minimum = default (TResult); - int counter = 0; - foreach (TSource item in source) { - TResult element = selector (item); - if (notAssigned) { - minimum = element; - notAssigned = false; - } - else { - int comparison; - if (element is IComparable<TResult>) - comparison = ((IComparable<TResult>)element).CompareTo (minimum); - else if (element is System.IComparable) - comparison = ((System.IComparable)element).CompareTo (minimum); - else - throw new ArgumentNullException (); - - if (comparison < 0) - minimum = element; - } - counter++; - } - - if (counter == 0) - throw new InvalidOperationException (); - else - return minimum; - } - - #endregion - - #region Max - - public static int Max (this IQueryable<int> source) - { - if (source == null) - throw new ArgumentNullException (); - - int maximum = int.MinValue; - int counter = 0; - foreach (int element in source) { - if (element > maximum) - maximum = element; - counter++; - } - - if (counter == 0) - throw new InvalidOperationException (); - else - return maximum; - } - - public static int? Max (this IQueryable<int?> source) - { - if (source == null) - throw new ArgumentNullException (); - - bool onlyNull = true; - int? maximum = int.MinValue; - foreach (int? element in source) { - if (element.HasValue) { - onlyNull = false; - if (element > maximum) - maximum = element; - } - } - return (onlyNull ? null : maximum); - } - - public static long Max (this IQueryable<long> source) - { - if (source == null) - throw new ArgumentNullException (); - - long maximum = long.MinValue; - int counter = 0; - foreach (long element in source) { - if (element > maximum) - maximum = element; - counter++; - } - - if (counter == 0) - throw new InvalidOperationException (); - else - return maximum; - } - - public static long? Max (this IQueryable<long?> source) - { - if (source == null) - throw new ArgumentNullException (); - - bool onlyNull = true; - long? maximum = long.MinValue; - foreach (long? element in source) { - if (element.HasValue) { - onlyNull = false; - if (element > maximum) - maximum = element; - } - } - return (onlyNull ? null : maximum); - } - - public static double Max ( - this IQueryable<double> source) - { - if (source == null) - throw new ArgumentNullException (); - - double maximum = double.MinValue; - int counter = 0; - foreach (double element in source) { - if (element > maximum) - maximum = element; - counter++; - } - - if (counter == 0) - throw new InvalidOperationException (); - else - return maximum; - } - - public static double? Max ( - this IQueryable<double?> source) - { - if (source == null) - throw new ArgumentNullException (); - - bool onlyNull = true; - double? maximum = double.MinValue; - foreach (double? element in source) { - if (element.HasValue) { - onlyNull = false; - if (element > maximum) - maximum = element; - } - } - return (onlyNull ? null : maximum); - } - - public static decimal Max ( - this IQueryable<decimal> source) - { - if (source == null) - throw new ArgumentNullException (); - - decimal maximum = decimal.MinValue; - int counter = 0; - foreach (decimal element in source) { - if (element > maximum) - maximum = element; - counter++; - } - - if (counter == 0) - throw new InvalidOperationException (); - else - return maximum; - } - - public static decimal? Max ( - this IQueryable<decimal?> source) - { - if (source == null) - throw new ArgumentNullException (); - - bool onlyNull = true; - decimal? maximum = decimal.MinValue; - foreach (decimal? element in source) { - if (element.HasValue) { - onlyNull = false; - if (element > maximum) - maximum = element; - } - } - return (onlyNull ? null : maximum); - } - - public static TSource Max<TSource> ( - this IQueryable<TSource> source) - { - if (source == null) - throw new ArgumentNullException (); - - bool notAssigned = true; - TSource maximum = default (TSource); - int counter = 0; - foreach (TSource element in source) { - if (notAssigned) { - maximum = element; - notAssigned = false; - } - else { - int comparison; - if (element is IComparable<TSource>) - comparison = ((IComparable<TSource>)element).CompareTo (maximum); - else if (element is System.IComparable) - comparison = ((System.IComparable)element).CompareTo (maximum); - else - throw new ArgumentNullException(); - - if (comparison > 0) - maximum = element; - } - counter++; - } - - if (counter == 0) - throw new InvalidOperationException (); - else - return maximum; - } - - public static int Max<TSource> ( - this IQueryable<TSource> source, - Func<TSource, int> selector) - { - if (source == null || selector == null) - throw new ArgumentNullException (); - - int maximum = int.MinValue; - int counter = 0; - foreach (TSource item in source) - { - int element = selector (item); - if (element > maximum) - maximum = element; - counter++; - } - - if (counter == 0) - throw new InvalidOperationException (); - else - return maximum; - } - - public static int? Max<TSource> ( - this IQueryable<TSource> source, - Func<TSource, int?> selector) - { - if (source == null || selector == null) - throw new ArgumentNullException (); - - bool onlyNull = true; - int? maximum = int.MinValue; - foreach (TSource item in source) { - int? element = selector (item); - if (element.HasValue) { - onlyNull = false; - if (element > maximum) - maximum = element; - } - } - return (onlyNull ? null : maximum); - } - - public static long Max<TSource> ( - this IQueryable<TSource> source, - Func<TSource, long> selector) - { - if (source == null || selector == null) - throw new ArgumentNullException (); - - long maximum = long.MinValue; - int counter = 0; - foreach (TSource item in source) { - long element = selector (item); - if (element > maximum) - maximum = element; - counter++; - } - - if (counter == 0) - throw new InvalidOperationException (); - else - return maximum; - } - - public static long? Max<TSource> ( - this IQueryable<TSource> source, - Func<TSource, long?> selector) - { - if (source == null || selector == null) - throw new ArgumentNullException (); - - bool onlyNull = true; - long? maximum = long.MinValue; - foreach (TSource item in source) { - long? element = selector (item); - if (element.HasValue) { - onlyNull = false; - if (element > maximum) - maximum = element; - } - } - return (onlyNull ? null : maximum); - } - - public static double Max<TSource> ( - this IQueryable<TSource> source, - Func<TSource, double> selector) - { - if (source == null || selector == null) - throw new ArgumentNullException (); - - double maximum = double.MinValue; - int counter = 0; - foreach (TSource item in source) { - double element = selector (item); - if (element > maximum) - maximum = element; - counter++; - } - - if (counter == 0) - throw new InvalidOperationException (); - else - return maximum; - } - - public static double? Max<TSource> ( - this IQueryable<TSource> source, - Func<TSource, double?> selector) - { - if (source == null || selector == null) - throw new ArgumentNullException (); - - bool onlyNull = true; - double? maximum = double.MinValue; - foreach (TSource item in source) { - double? element = selector(item); - if (element.HasValue) { - onlyNull = false; - if (element > maximum) - maximum = element; - } - } - return (onlyNull ? null : maximum); - } - - public static decimal Max<TSource> ( - this IQueryable<TSource> source, - Func<TSource, decimal> selector) - { - if (source == null || selector == null) - throw new ArgumentNullException (); - - decimal maximum = decimal.MinValue; - int counter = 0; - foreach (TSource item in source) { - decimal element = selector(item); - if (element > maximum) - maximum = element; - counter++; - } - - if (counter == 0) - throw new InvalidOperationException (); - else - return maximum; - } - - public static decimal? Max<TSource> ( - this IQueryable<TSource> source, - Func<TSource, decimal?> selector) - { - if (source == null || selector == null) - throw new ArgumentNullException (); - - bool onlyNull = true; - decimal? maximum = decimal.MinValue; - foreach (TSource item in source) { - decimal? element = selector(item); - if (element.HasValue) { - onlyNull = false; - if (element > maximum) - maximum = element; - } - } - return (onlyNull ? null : maximum); - } - - public static TResult Max<TSource, TResult> ( - this IQueryable<TSource> source, - Func<TSource, TResult> selector) - { - if (source == null || selector == null) - throw new ArgumentNullException (); - - bool notAssigned = true; - TResult maximum = default (TResult); - int counter = 0; - foreach (TSource item in source) - { - TResult element = selector (item); - if (notAssigned) { - maximum = element; - notAssigned = false; - } - else { - int comparison; - if (element is IComparable<TResult>) - comparison = ((IComparable<TResult>)element).CompareTo (maximum); - else if (element is System.IComparable) - comparison = ((System.IComparable)element).CompareTo (maximum); - else - throw new ArgumentNullException(); - - if (comparison > 0) - maximum = element; - } - counter++; - } - - if (counter == 0) - throw new InvalidOperationException (); - else - return maximum; - } - - #endregion - - #region Average - - public static double Average (this IQueryable<int> source) - { - if (source == null) - throw new ArgumentNullException (); - - long sum = 0; - long counter = 0; - foreach (int element in source) { - sum += element; - counter++; - } - - if (counter == 0) - throw new InvalidOperationException (); - else - return (double)sum / (double)counter; - } - - public static double? Average (this IQueryable<int?> source) - { - if (source == null) - throw new ArgumentNullException (); - - bool onlyNull = true; - long sum = 0; - long counter = 0; - foreach (int? element in source) { - if (element.HasValue) { - onlyNull = false; - sum += element.Value; - counter++; - } - } - return (onlyNull ? null : (double?)sum / (double?)counter); - } - - public static double Average (this IQueryable<long> source) - { - if (source == null) - throw new ArgumentNullException (); - - long sum = 0; - long counter = 0; - foreach (long element in source) { - sum += element; - counter++; - } - - if (counter == 0) - throw new InvalidOperationException (); - else - return (double)sum / (double)counter; - } - - public static double? Average (this IQueryable<long?> source) - { - if (source == null) - throw new ArgumentNullException (); - - bool onlyNull = true; - long sum = 0; - long counter = 0; - foreach (long? element in source) { - if (element.HasValue) { - onlyNull = false; - sum += element.Value; - counter++; - } - } - return (onlyNull ? null : (double?)sum / (double?)counter); - } - - public static double Average (this IQueryable<double> source) - { - if (source == null) - throw new ArgumentNullException (); - - double sum = 0; - double counter = 0; - foreach (double element in source) { - sum += element; - counter++; - } - - if (counter == 0) - throw new InvalidOperationException (); - else - return sum / counter; - } - - public static double? Average (this IQueryable<double?> source) - { - if (source == null) - throw new ArgumentNullException (); - - bool onlyNull = true; - double sum = 0; - double counter = 0; - foreach (double? element in source) { - if (element.HasValue) { - onlyNull = false; - sum += element.Value; - counter++; - } - } - return (onlyNull ? null : (double?)(sum / counter)); - } - - public static decimal Average (this IQueryable<decimal> source) - { - if (source == null) - throw new ArgumentNullException (); - - decimal sum = 0; - decimal counter = 0; - foreach (decimal element in source) { - sum += element; - counter++; - } - - if (counter == 0) - throw new InvalidOperationException (); - else - return sum / counter; - } - - public static decimal? Average (this IQueryable<decimal?> source) - { - if (source == null) - throw new ArgumentNullException (); - - bool onlyNull = true; - decimal sum = 0; - decimal counter = 0; - foreach (decimal? element in source) { - if (element.HasValue) { - onlyNull = false; - sum += element.Value; - counter++; - } - } - return (onlyNull ? null : (decimal?)(sum / counter)); - } - - public static double Average<TSource> (this IQueryable<TSource> source, - Func<TSource, int> selector) - { - if (source == null || selector == null) - throw new ArgumentNullException (); - - long sum = 0; - long counter = 0; - foreach (TSource item in source) { - sum += selector (item); - counter++; - } - - if (counter == 0) - throw new InvalidOperationException (); - else - return (double)sum / (double)counter; - } - - public static double? Average<TSource> (this IQueryable<TSource> source, - Func<TSource, int?> selector) - { - if (source == null || selector == null) - throw new ArgumentNullException (); - - bool onlyNull = true; - long sum = 0; - long counter = 0; - foreach (TSource item in source) { - int? element = selector (item); - if (element.HasValue) { - onlyNull = false; - sum += element.Value; - counter++; - } - } - return (onlyNull ? null : (double?)sum / (double?)counter); - } - - public static double Average<TSource> (this IQueryable<TSource> source, - Func<TSource, long> selector) - { - if (source == null || selector == null) - throw new ArgumentNullException (); - - long sum = 0; - long counter = 0; - foreach (TSource item in source) { - sum += selector (item); - counter++; - } - - if (counter == 0) - throw new InvalidOperationException(); - else - return (double)sum / (double)counter; - } - - public static double? Average<TSource> (this IQueryable<TSource> source, - Func<TSource, long?> selector) - { - if (source == null || selector == null) - throw new ArgumentNullException (); - - bool onlyNull = true; - long sum = 0; - long counter = 0; - foreach (TSource item in source) { - long? element = selector (item); - if (element.HasValue) { - onlyNull = false; - sum += element.Value; - counter++; - } - } - return (onlyNull ? null : (double?)sum/(double?)counter); - } - - public static double Average<TSource> (this IQueryable<TSource> source, - Func<TSource, double> selector) - { - if (source == null || selector == null) - throw new ArgumentNullException (); - - double sum = 0; - double counter = 0; - foreach (TSource item in source) { - sum += selector (item); - counter++; - } - - if (counter == 0) - throw new InvalidOperationException (); - else - return sum / counter; - } - - public static double? Average<TSource> (this IQueryable<TSource> source, - Func<TSource, double?> selector) - { - if (source == null || selector == null) - throw new ArgumentNullException (); - - bool onlyNull = true; - double sum = 0; - double counter = 0; - foreach (TSource item in source) { - double? element = selector (item); - if (element.HasValue) { - onlyNull = false; - sum += element.Value; - counter++; - } - } - return (onlyNull ? null : (double?)(sum/counter)); - } - - public static decimal Average<TSource> (this IQueryable<TSource> source, - Func<TSource, decimal> selector) - { - if (source == null || selector == null) - throw new ArgumentNullException (); - - decimal sum = 0; - decimal counter = 0; - foreach (TSource item in source) { - sum += selector(item); - counter++; - } - - if (counter == 0) - throw new InvalidOperationException (); - else - return sum / counter; - } - - public static decimal? Average<TSource> (this IQueryable<TSource> source, - Func<TSource, decimal?> selector) - { - if (source == null || selector == null) - throw new ArgumentNullException (); - - bool onlyNull = true; - decimal sum = 0; - decimal counter = 0; - foreach (TSource item in source) { - decimal? element = selector (item); - if (element.HasValue) { - onlyNull = false; - sum += element.Value; - counter++; - } - } - return (onlyNull ? null : (decimal?)(sum/counter)); - } - - #endregion - - #region Fold -/* - [Obsolete ("Use Aggregate instead")] - [System.Runtime.CompilerServices.Extension] - public static TSource Fold<TSource> ( - IQueryable<TSource> source, - Func<TSource, TSource, TSource> func) - { - return Fold<TSource> (source, func); - } - - [Obsolete ("Use Aggregate instead")] - [System.Runtime.CompilerServices.Extension] - public static U Fold<TSource, U> ( - IQueryable<TSource> source, - U seed, - Func<U, TSource, U> func) - { - return Fold<TSource, U> (source, seed, func); - } -*/ - #endregion - - #region Aggregate - - public static TSource Aggregate<TSource> ( - this IQueryable<TSource> source, - Func<TSource, TSource, TSource> func) - { - if (source == null || func == null) - throw new ArgumentNullException (); - - int counter = 0; - TSource folded = default (TSource); - - foreach (TSource element in source) { - if (counter == 0) - folded = element; - else - folded = func (folded, element); - } - - if (counter == 0) - throw new InvalidOperationException (); - else - return folded; - } - - public static U Aggregate<TSource, U> ( - this IQueryable<TSource> source, - U seed, - Func<U, TSource, U> func) - { - if (source == null || func == null) - throw new ArgumentNullException (); - - U folded = seed; - foreach (TSource element in source) - folded = func (folded, element); - return folded; - } - - #endregion + public static class Queryable { - #region Concat - - public static IEnumerable<TSource> Concat<TSource> ( - this IQueryable<TSource> first, - IEnumerable<TSource> second) - { - if (first == null || second == null) - throw new ArgumentNullException (); - - foreach (TSource element in first) - yield return element; - foreach (TSource element in second) - yield return element; - } - - #endregion -/* - #region ToSequence - - [System.Runtime.CompilerServices.Extension] - public static IQueryable<TSource> ToSequence<TSource> ( - IQueryable<TSource> source) - { - return (IQueryable<TSource>)source; - } - - #endregion - - #region ToArray - - [System.Runtime.CompilerServices.Extension] - public static TSource[] ToArray<TSource> ( - IQueryable<TSource> source) - { - if (source == null) - throw new ArgumentNullException (); - - List<TSource> list = new List<TSource> (source); - return list.ToArray (); - } - - #endregion - - #region ToList - - [System.Runtime.CompilerServices.Extension] - public static List<TSource> ToList<TSource> ( - IQueryable<TSource> source) - { - if (source == null) - throw new ArgumentNullException (); - - return new List<TSource> (source); - } - - #endregion - - #region ToDictionary - - [System.Runtime.CompilerServices.Extension] - public static Dictionary<K, TSource> ToDictionary<TSource, K> ( - IQueryable<TSource> source, - Func<TSource, K> keySelector) - { - return ToDictionary<TSource, K> (source, keySelector, null); - } - - [System.Runtime.CompilerServices.Extension] - public static Dictionary<K, TSource> ToDictionary<TSource, K> ( - IQueryable<TSource> source, - Func<TSource, K> keySelector, - IEqualityComparer<K> comparer) - { - if (source == null || keySelector == null) - throw new ArgumentNullException (); - - Dictionary<K, TSource> dictionary = new Dictionary<K, TSource> (comparer ?? EqualityComparer<K>.Default); - foreach (TSource element in source) { - K key = keySelector (element); - if (key == null) - throw new ArgumentNullException (); - else if (dictionary.ContainsKey (key)) - throw new ArgumentException (); - else - dictionary.Add (key, element); - } - return dictionary; - } + static MethodInfo MakeGeneric (MethodBase method, params Type [] parameters) + { + return ((MethodInfo) method).MakeGenericMethod (parameters); + } - [System.Runtime.CompilerServices.Extension] - public static Dictionary<K, E> ToDictionary<TSource, K, E> ( - IQueryable<TSource> source, - Func<TSource, K> keySelector, - Func<TSource, E> elementSelector) - { - return ToDictionary<TSource, K, E> (source, keySelector, elementSelector, null); - } - - [System.Runtime.CompilerServices.Extension] - public static Dictionary<K, E> ToDictionary<TSource, K, E> ( - IQueryable<TSource> source, - Func<TSource, K> keySelector, - Func<TSource, E> elementSelector, - IEqualityComparer<K> comparer) - { - if (source == null || keySelector == null || elementSelector == null) - throw new ArgumentNullException (); - - Dictionary<K, E> dictionary = new Dictionary<K, E>(comparer ?? EqualityComparer<K>.Default); - foreach (TSource element in source) - { - K key = keySelector (element); - if (key == null) - throw new ArgumentNullException (); - else if (dictionary.ContainsKey (key)) - throw new ArgumentException (); - else - dictionary.Add(key, elementSelector (element)); - } - return dictionary; - } - - #endregion - - #region ToLookup - - [System.Runtime.CompilerServices.Extension] - public static Lookup<K, TSource> ToLookup<TSource, K> ( - IQueryable<TSource> source, - Func<TSource, K> keySelector) - { - return ToLookup<TSource, K> (source, keySelector, null); - } - - [System.Runtime.CompilerServices.Extension] - public static Lookup<K, TSource> ToLookup<TSource, K> ( - IQueryable<TSource> source, - Func<TSource, K> keySelector, - IEqualityComparer<K> comparer) - { - if (source == null || keySelector == null) - throw new ArgumentNullException (); - - Dictionary<K, List<TSource>> dictionary = new Dictionary<K, List<TSource>> (comparer ?? EqualityComparer<K>.Default); - foreach (TSource element in source) { - K key = keySelector (element); - if (key == null) - throw new ArgumentNullException (); - if (!dictionary.ContainsKey (key)) - dictionary.Add (key, new List<TSource> ()); - dictionary[key].Add (element); - } - return new Lookup<K, TSource> (dictionary); - } + static Expression StaticCall (MethodInfo method, params Expression [] expressions) + { + return Expression.Call (null, method, expressions); + } - [System.Runtime.CompilerServices.Extension] - public static Lookup<K, E> ToLookup<TSource, K, E> ( - IQueryable<TSource> source, - Func<TSource, K> keySelector, - Func<TSource, E> elementSelector) - { - return ToLookup<TSource, K, E> (source, keySelector, elementSelector, null); - } - - [System.Runtime.CompilerServices.Extension] - public static Lookup<K, E> ToLookup<TSource, K, E> ( - IQueryable<TSource> source, - Func<TSource, K> keySelector, - Func<TSource, E> elementSelector, - IEqualityComparer<K> comparer) - { - if (source == null || keySelector == null || elementSelector == null) - throw new ArgumentNullException (); - - Dictionary<K, List<E>> dictionary = new Dictionary<K, List<E>>(comparer ?? EqualityComparer<K>.Default); - foreach (TSource element in source) - { - K key = keySelector (element); - if (key == null) - throw new ArgumentNullException (); - if (!dictionary.ContainsKey (key)) - dictionary.Add (key, new List<E> ()); - dictionary[key].Add (elementSelector (element)); - } - return new Lookup<K, E> (dictionary); - } - - #endregion - */ - #region OfType - - public static IEnumerable<TResult> OfType<TResult> (this IQueryable source) - { - if (source == null) - throw new ArgumentNullException (); - - foreach (object element in source) - if (element is TResult) - yield return (TResult)element; - } - - #endregion - - #region Cast - - public static IEnumerable<TResult> Cast<TResult> (this IQueryable source) - { - if (source == null) - throw new ArgumentNullException (); - - foreach (object element in source) - yield return (TResult)element; - } - - #endregion + static TRet Execute<TRet, TSource> (this IQueryable<TSource> source, MethodBase current) + { + return source.Provider.Execute<TRet> ( + StaticCall ( + MakeGeneric (current, typeof (TSource)), + source.Expression)); + } - #region First - - public static TSource First<TSource> (this IQueryable<TSource> source) - { - if (source == null) - throw new ArgumentNullException (); - - foreach (TSource element in source) - return element; - - throw new InvalidOperationException (); - } - - public static TSource First<TSource> ( - this IQueryable<TSource> source, - Func<TSource, bool> predicate) - { - if (source == null || predicate == null) - throw new ArgumentNullException (); - - foreach (TSource element in source) { - if (predicate (element)) - return element; - } - - throw new InvalidOperationException (); - } - - #endregion - - #region FirstOrDefault - - public static TSource FirstOrDefault<TSource> (this IQueryable<TSource> source) - { - if (source == null) - throw new ArgumentNullException (); - - foreach (TSource element in source) - return element; - - return default (TSource); - } - - public static TSource FirstOrDefault<TSource> ( - this IQueryable<TSource> source, - Func<TSource, bool> predicate) - { - if (source == null || predicate == null) - throw new ArgumentNullException (); - - foreach (TSource element in source) { - if (predicate (element)) - return element; - } - - return default (TSource); - } - - #endregion - - #region Last - - public static TSource Last<TSource> (this IQueryable<TSource> source) - { - if (source == null) - throw new ArgumentNullException (); - - bool noElements = true; - TSource lastElement = default (TSource); - foreach (TSource element in source) - { - if (noElements) noElements = false; - lastElement = element; - } - - if (!noElements) - return lastElement; - else - throw new InvalidOperationException(); - } - - public static TSource Last<TSource> ( - this IQueryable<TSource> source, - Func<TSource, bool> predicate) - { - if (source == null || predicate == null) - throw new ArgumentNullException (); - - bool noElements = true; - TSource lastElement = default (TSource); - foreach (TSource element in source) { - if (predicate (element)) - { - if (noElements) noElements = false; - lastElement = element; - } - } - - if (!noElements) - return lastElement; - else - throw new InvalidOperationException (); - } - - #endregion - - #region LastOrDefault - - public static TSource LastOrDefault<TSource> (this IQueryable<TSource> source) - { - if (source == null) - throw new ArgumentNullException (); - - TSource lastElement = default (TSource); - foreach (TSource element in source) - lastElement = element; - - return lastElement; - } - - public static TSource LastOrDefault<TSource> ( - this IQueryable<TSource> source, - Func<TSource, bool> predicate) - { - if (source == null || predicate == null) - throw new ArgumentNullException (); - - TSource lastElement = default (TSource); - foreach (TSource element in source) { - if (predicate (element)) - lastElement = element; - } - - return lastElement; - } - - #endregion - - #region Single - - public static TSource Single<TSource> (this IQueryable<TSource> source) - { - if (source == null) - throw new ArgumentNullException (); - - bool otherElement = false; - TSource singleElement = default (TSource); - foreach (TSource element in source) - { - if (otherElement) throw new InvalidOperationException (); - if (!otherElement) otherElement = true; - singleElement = element; - } - - if (otherElement) - return singleElement; - else - throw new InvalidOperationException(); - } - - public static TSource Single<TSource> ( - this IQueryable<TSource> source, - Func<TSource, bool> predicate) - { - if (source == null || predicate == null) - throw new ArgumentNullException (); - - bool otherElement = false; - TSource singleElement = default (TSource); - foreach (TSource element in source) { - if (predicate (element)) - { - if (otherElement) throw new InvalidOperationException (); - if (!otherElement) otherElement = true; - singleElement = element; - } - } - - if (otherElement) - return singleElement; - else - throw new InvalidOperationException (); - } - - #endregion - - #region SingleOrDefault - - public static TSource SingleOrDefault<TSource> (this IQueryable<TSource> source) - { - if (source == null) - throw new ArgumentNullException (); - - bool otherElement = false; - TSource singleElement = default (TSource); - foreach (TSource element in source) - { - if (otherElement) throw new InvalidOperationException (); - if (!otherElement) otherElement = true; - singleElement = element; - } - - return singleElement; - } - - public static TSource SingleOrDefault<TSource> ( - this IQueryable<TSource> source, - Func<TSource, bool> predicate) - { - if (source == null || predicate == null) - throw new ArgumentNullException (); - - bool otherElement = false; - TSource singleElement = default (TSource); - foreach (TSource element in source) { - if (predicate (element)) - { - if (otherElement) throw new InvalidOperationException (); - if (!otherElement) otherElement = true; - singleElement = element; - } - } - - return singleElement; - } - - #endregion - - #region ElementAt - - public static TSource ElementAt<TSource> ( - this IQueryable<TSource> source, - int index) - { - if (source == null) - throw new ArgumentNullException (); - if (index < 0) - throw new ArgumentOutOfRangeException (); - - if (source is IList<TSource>) - return ((IList<TSource>)source)[index]; - else { - int counter = 0; - foreach (TSource element in source) { - if (counter == index) - return element; - counter++; - } - throw new ArgumentOutOfRangeException(); - } - } - - #endregion - - #region ElementAtOrDefault - - public static TSource ElementAtOrDefault<TSource> ( - this IQueryable<TSource> source, - int index) - { - if (source == null) - throw new ArgumentNullException (); - if (index < 0) - return default(TSource); - - if (source is IList<TSource>) - { - if (((IList<TSource>)source).Count >= index) - return default(TSource); - else - return ((IList<TSource>)source)[index]; - } - else { - int counter = 0; - foreach (TSource element in source) { - if (counter == index) - return element; - counter++; - } - return default (TSource); - } - } - - #endregion - - #region DefaultIfEmpty - - public static IEnumerable<TSource> DefaultIfEmpty<TSource> ( - this IQueryable<TSource> source) - { - if (source == null) - throw new ArgumentNullException (); - - bool noYield = true; - foreach (TSource item in source) - { - noYield = false; - yield return item; - } - - if (noYield) - yield return default (TSource); - } - - public static IEnumerable<TSource> DefaultIfEmpty<TSource> ( - this IQueryable<TSource> source, - TSource defaultValue) - { - if (source == null) - throw new ArgumentNullException (); - - bool noYield = true; - foreach (TSource item in source) - { - noYield = false; - yield return item; - } - - if (noYield) - yield return defaultValue; - } - - #endregion + public static int Count<TSource> (this IQueryable<TSource> source) + { + Check.Source (source); -/* #region EqualAll - - [System.Runtime.CompilerServices.Extension] - public static bool EqualAll<TSource> ( - IQueryable<TSource> first, - IQueryable<TSource> second) - { - if (first == null || second == null) - throw new ArgumentNullException (); - - List<TSource> firstList = new List<TSource> (first); - List<TSource> secondList = new List<TSource> (second); - - if (firstList.Count != firstList.Count) - return false; - - for (int i = 0; i < firstList.Count; i++) { - if (!System.Object.Equals (firstList [i], secondList [i])) - return false; - } - // If no pair of elements is different, then everything is equal - return true; - } - - #endregion + return source.Execute<int, TSource> (MethodBase.GetCurrentMethod ()); + } - #region Range - - [System.Runtime.CompilerServices.Extension] - public static IEnumerable<int> Range ( - int start, int count) - { - if (count < 0 || (start + count - 1) > int.MaxValue) - throw new ArgumentOutOfRangeException (); - - for (int i = start; i < (start + count - 1); i++) - yield return i; - } - - #endregion -*/ - #region Repeat - - public static IEnumerable<TSource> Repeat<TSource> (this TSource element, int count) - { - if (count < 0) - throw new ArgumentOutOfRangeException (); - - for (int i = 0; i < count; i++) - yield return element; - } - - #endregion - - /** A NOTE ON IMPLEMENTATION REGARDING NULL KEYS - * - * GroupBy specification states that null-key values - * are allowed. However, all implementations of - * Dictionary<K, TSource> ban null keys. - * Because of this, a small trick has to be done: - * a special List<TSource> variable is created in order to - * be filled with this null-key values. - * Also, groups must be yielded in the order their - * keys were found for first time, so we need to keep - * a record on when the null-key values appeared - * (that is nullCounter variable). - * Then, when results are iterated and yielded, we - * mantain a counter and if null-key values were - * found, they are yielded in the order needed. - * Because K can be a valuetype, compilers expose a - * restriction on null values, that's why default(TSource) - * is used. However, default(TSource) is null for - * reference types, and values with selectors that - * return value types can't return null. **/ - - #region GroupBy - - private static List<TSource> ContainsGroup<K, TSource>( - Dictionary<K, List<TSource>> items, K key, IEqualityComparer<K> comparer) - { - IEqualityComparer<K> comparerInUse = (comparer ?? EqualityComparer<K>.Default); - foreach (KeyValuePair<K, List<TSource>> value in items) { - if (comparerInUse.Equals(value.Key, key)) - return value.Value; - } - return null; - } - - public static IQueryable<IGrouping<K, TSource>> GroupBy<TSource, K> ( - this IQueryable<TSource> source, - Func<TSource, K> keySelector) - { - throw new NotImplementedException (); - //return GroupBy<TSource, K> (source, keySelector, null); - } -/* - [System.Runtime.CompilerServices.Extension] - public static IQueryable<IGrouping<K, TSource>> GroupBy<TSource, K> ( - IQueryable<TSource> source, - Func<TSource, K> keySelector, - IEqualityComparer<K> comparer) - { - if (source == null || keySelector == null) - throw new ArgumentNullException (); - - Dictionary<K, List<TSource>> groups = new Dictionary<K, List<TSource>> (); - List<TSource> nullList = new List<TSource> (); - int counter = 0; - int nullCounter = -1; - - foreach (TSource element in source) { - K key = keySelector (element); - if (key == null) { - nullList.Add (element); - if (nullCounter == -1) { - nullCounter = counter; - counter++; - } - } - else { - List<TSource> group = ContainsGroup<K, TSource> (groups, key, comparer); - if (group == null) { - group = new List<TSource> (); - groups.Add (key, group); - counter++; - } - group.Add (element); - } - } - - counter = 0; - foreach (KeyValuePair<K, List<TSource>> group in groups) { - if (counter == nullCounter) { - Grouping<K, TSource> nullGroup = new Grouping<K, TSource> (default (K), nullList); - yield return nullGroup; - counter++; - } - Grouping<K, TSource> grouping = new Grouping<K, TSource> (group.Key, group.Value); - yield return grouping; - counter++; - } - } -*/ + public static int Count<TSource> (this IQueryable<TSource> source, Expression<Func<TSource, bool>> predicate) + { + Check.SourceAndPredicate (source, predicate); - public static IQueryable<IGrouping<K, E>> GroupBy<TSource, K, E> ( - this IQueryable<TSource> source, - Func<TSource, K> keySelector, - Func<TSource, E> elementSelector) - { - return GroupBy<TSource, K, E> (source, keySelector, elementSelector); - } - - public static IEnumerable<IGrouping<K, E>> GroupBy<TSource, K, E> ( - this IQueryable<TSource> source, - Func<TSource, K> keySelector, - Func<TSource, E> elementSelector, - IEqualityComparer<K> comparer) - { - if (source == null || keySelector == null || elementSelector == null) - throw new ArgumentNullException (); - - Dictionary<K, List<E>> groups = new Dictionary<K, List<E>> (); - List<E> nullList = new List<E> (); - int counter = 0; - int nullCounter = -1; + return source.Provider.Execute<int> ( + StaticCall ( + MakeGeneric (MethodBase.GetCurrentMethod (), typeof (TSource)), + source.Expression, + Expression.Quote (predicate))); + } - foreach (TSource item in source) { - K key = keySelector (item); - E element = elementSelector (item); - if (key == null) { - nullList.Add(element); - if (nullCounter == -1) { - nullCounter = counter; - counter++; - } - } - else { - List<E> group = ContainsGroup<K, E> (groups, key, comparer); - if (group == null) { - group = new List<E> (); - groups.Add (key, group); - counter++; - } - group.Add (element); - } - } - - counter = 0; - foreach (KeyValuePair<K, List<E>> group in groups) { - if (counter == nullCounter) { - Grouping<K, E> nullGroup = new Grouping<K, E> (default (K), nullList); - yield return nullGroup; - counter++; - } - Grouping<K, E> grouping = new Grouping<K, E> (group.Key, group.Value); - yield return grouping; - counter++; - } - } - - #endregion + public static long LongCount<TSource> (this IQueryable<TSource> source) + { + Check.Source (source); - #region OrderBy - - public static IOrderedQueryable<TSource> OrderBy<TSource, TKey> ( - this IQueryable<TSource> source, - Func<TSource, TKey> keySelector) - { - return OrderBy<TSource, TKey> (source, keySelector, null); - } - - public static IOrderedQueryable<TSource> OrderBy<TSource, TKey> ( - this IQueryable<TSource> source, - Func<TSource, TKey> keySelector, - IComparer<TKey> comparer) - { - if (source == null || keySelector == null) - throw new ArgumentNullException (); - - throw new NotImplementedException (); -// return new InternalOrderedSequence<TSource, K> ( -// source, keySelector, (comparer ?? Comparer<K>.Default), false, null); - } - - #endregion - - #region OrderByDescending - - public static IOrderedQueryable<TSource> OrderByDescending<TSource, TKey> ( - this IQueryable<TSource> source, - Func<TSource, TKey> keySelector) - { - return OrderByDescending<TSource, TKey> (source, keySelector, null); - } - - public static IOrderedQueryable<TSource> OrderByDescending<TSource, TKey> ( - this IQueryable<TSource> source, - Func<TSource, TKey> keySelector, - IComparer<TKey> comparer) - { - if (source == null || keySelector == null) - throw new ArgumentNullException (); - - throw new NotImplementedException (); - -// return new InternalOrderedSequence<TSource, K> ( -// source, keySelector, (comparer ?? Comparer<K>.Default), true, null); - } - - #endregion - - #region ThenBy - - public static IOrderedQueryable<TSource> ThenBy<TSource, TKey> ( - this IOrderedQueryable<TSource> source, - Func<TSource, TKey> keySelector) - { - return ThenBy<TSource, TKey> (source, keySelector, null); - } - - public static IOrderedQueryable<TSource> ThenBy<TSource, TKey> ( - this IOrderedQueryable<TSource> source, - Func<TSource, TKey> keySelector, - IComparer<TKey> comparer) - { - if (source == null || keySelector == null) - throw new ArgumentNullException (); + return source.Execute<long, TSource> (MethodBase.GetCurrentMethod ()); + } - throw new NotImplementedException (); -// return new InternalOrderedSequence<TSource, K> ( -// source, keySelector, (comparer ?? Comparer<K>.Default), false, source); - } - - #endregion - - #region ThenByDescending - - public static IOrderedQueryable<TSource> ThenByDescending<TSource, TKey> ( - this IOrderedQueryable<TSource> source, - Func<TSource, TKey> keySelector) - { - return ThenByDescending<TSource, TKey> (source, keySelector, null); - } - - public static IOrderedQueryable<TSource> ThenByDescending<TSource, TKey> ( - this IOrderedQueryable<TSource> source, - Func<TSource, TKey> keySelector, - IComparer<TKey> comparer) - { - if (source == null || keySelector == null) - throw new ArgumentNullException (); - - throw new NotImplementedException (); - -// return new InternalOrderedSequence<TSource, K> ( -// source, keySelector, (comparer ?? Comparer<K>.Default), true, source); - } - - #endregion - - #region Reverse + public static long LongCount<TSource> (this IQueryable<TSource> source, Expression<Func<TSource, bool>> predicate) + { + Check.SourceAndPredicate (source, predicate); - public static IQueryable<TSource> Reverse<TSource> ( - this IQueryable<TSource> source) - { - if (source == null) - throw new ArgumentNullException (); - - //List<TSource> list = new List<TSource> (source); - //list.Reverse (); - //return list; - throw new NotImplementedException (); - } - - #endregion + return source.Provider.Execute<long> ( + StaticCall ( + MakeGeneric (MethodBase.GetCurrentMethod (), typeof (TSource)), + source.Expression, + Expression.Quote (predicate))); + } - #region Take - - public static IEnumerable<TSource> Take<TSource> ( - this IQueryable<TSource> source, - int count) - { - if (source == null) - throw new ArgumentNullException (); - - if (count <= 0) - yield break; - else { - int counter = 0; - foreach (TSource element in source) { - yield return element; - counter++; - if (counter == count) - yield break; - } - } - } - - #endregion - - #region Skip - - public static IEnumerable<TSource> Skip<TSource> ( - this IQueryable<TSource> source, - int count) - { - if (source == null) - throw new ArgumentNullException (); - - int counter = 0; - bool yield = false; - if (count <= 0) - yield = true; + public static int Sum (this IQueryable<int> source) + { + Check.Source (source); - foreach (TSource element in source) { - if (yield) - yield return element; - else { - counter++; - if (counter == count) - yield = true; - } - } - } - - #endregion - - #region TakeWhile - - public static IEnumerable<TSource> TakeWhile<TSource> ( - this IQueryable<TSource> source, - Func<TSource, bool> predicate) - { - if (source == null || predicate == null) - throw new ArgumentNullException (); - - foreach (TSource element in source) { - if (predicate (element)) - yield return element; - else - yield break; - } - } - - public static IEnumerable<TSource> TakeWhile<TSource> ( - this IQueryable<TSource> source, - Func<TSource, int, bool> predicate) - { - if (source == null || predicate == null) - throw new ArgumentNullException (); - - int counter = 0; - foreach (TSource element in source) - { - if (predicate (element, counter)) - yield return element; - else - yield break; - counter++; - } - } - - #endregion - - #region SkipWhile - - public static IEnumerable<TSource> SkipWhile<TSource> ( - this IQueryable<TSource> source, - Func<TSource, bool> predicate) - { - if (source == null || predicate == null) - throw new ArgumentNullException (); - - bool yield = false; - - foreach (TSource element in source) { - if (yield) - yield return element; - else - if (!predicate (element)) { - yield return element; - yield = true; - } - } - } - - public static IEnumerable<TSource> SkipWhile<TSource> ( - this IQueryable<TSource> source, - Func<TSource, int, bool> predicate) - { - if (source == null || predicate == null) - throw new ArgumentNullException(); - - int counter = 0; - bool yield = false; - - foreach (TSource element in source) { - if (yield) - yield return element; - else - if (!predicate (element, counter)) { - yield return element; - yield = true; - } - counter++; - } - } - - #endregion + return source.Provider.Execute<int> ( + StaticCall ( + (MethodInfo) MethodBase.GetCurrentMethod (), + source.Expression)); + } + + public static int Sum<TSource> (this IQueryable<TSource> source, Expression<Func<TSource, int>> selector) + { + throw new NotImplementedException (); + } + + public static int? Sum (this IQueryable<int?> source) + { + throw new NotImplementedException (); + } + + public static int? Sum<TSource> ( + this IQueryable<TSource> source, + Func<TSource, int?> selector) + { + throw new NotImplementedException (); + } - #region Select - - public static IEnumerable<TResult> Select<TSource, TResult> ( - this IQueryable<TSource> source, - Func<TSource, TResult> selector) - { - if (source == null || selector == null) - throw new ArgumentNullException (); - - foreach (TSource element in source) - yield return selector (element); - } - - public static IEnumerable<TResult> Select<TSource, TResult> ( - this IQueryable<TSource> source, - Func<TSource, int, TResult> selector) - { - if (source == null || selector == null) - throw new ArgumentNullException (); - - int counter = 0; - foreach (TSource element in source) { - yield return selector (element, counter); - counter++; - } - } - - #endregion - - #region SelectMany - - public static IEnumerable<TResult> SelectMany<TSource, TResult> ( - this IQueryable<TSource> source, - Func<TSource, IQueryable<TResult>> selector) - { - if (source == null || selector == null) - throw new ArgumentNullException (); - - foreach (TSource element in source) - foreach (TResult item in selector (element)) - yield return item; - } - - public static IEnumerable<TResult> SelectMany<TSource, TResult> ( - this IQueryable<TSource> source, - Func<TSource, int, IQueryable<TResult>> selector) - { - if (source == null || selector == null) - throw new ArgumentNullException (); - - int counter = 0; - foreach (TSource element in source) { - foreach (TResult item in selector (element, counter)) - yield return item; - counter++; - } - } - - #endregion + public static long Sum (this IQueryable<long> source) + { + throw new NotImplementedException (); + } + + public static long Sum<TSource> ( + this IQueryable<TSource> source, + Func<TSource, long> selector) + { + throw new NotImplementedException (); + } + + public static long? Sum (this IQueryable<long?> source) + { + throw new NotImplementedException (); + } + + public static long? Sum<TSource> ( + this IQueryable<TSource> source, + Func<TSource, long?> selector) + { + throw new NotImplementedException (); + } + + public static double Sum (this IQueryable<double> source) + { + throw new NotImplementedException (); + } + + public static double Sum<TSource> ( + this IQueryable<TSource> source, + Func<TSource, double> selector) + { + throw new NotImplementedException (); + } + + public static double? Sum (this IQueryable<double?> source) + { + throw new NotImplementedException (); + } + + public static double? Sum<TSource> ( + this IQueryable<TSource> source, + Func<TSource, double?> selector) + { + throw new NotImplementedException (); + } + + public static decimal Sum (this IQueryable<decimal> source) + { + throw new NotImplementedException (); + } + + public static decimal Sum<TSource> ( + this IQueryable<TSource> source, + Func<TSource, decimal> selector) + { + throw new NotImplementedException (); + } - #region Any - - public static bool Any<TSource> (this IQueryable<TSource> source) - { - if (source == null) - throw new ArgumentNullException (); - - foreach (TSource element in source) - return true; - return false; - } - - public static bool Any<TSource> ( - this IQueryable<TSource> source, - Func<TSource, bool> predicate) - { - if (source == null || predicate == null) - throw new ArgumentNullException (); - - foreach (TSource element in source) - if (predicate(element)) - return true; - return false; - } - - #endregion - - #region All - - public static bool All<TSource> ( - this IQueryable<TSource> source, - Func<TSource, bool> predicate) - { - if (source == null || predicate == null) - throw new ArgumentNullException (); - - foreach (TSource element in source) - if (!predicate(element)) - return false; - return true; - } - - #endregion - - #region Contains - - public static bool Contains<TSource> (this IQueryable<TSource> source, TSource value) - { - if (source is ICollection<TSource>) { - ICollection<TSource> collection = (ICollection<TSource>)source; - return collection.Contains(value); - } - else { - foreach (TSource element in source) - if (Equals(element, value)) - return true; - return false; - } - } - - #endregion + public static decimal? Sum (this IQueryable<decimal?> source) + { + throw new NotImplementedException (); + } - #region Where - - public static IEnumerable<TSource> Where<TSource> ( - this IQueryable<TSource> source, - Func<TSource, bool> predicate) - { - if (source == null || predicate == null) - throw new ArgumentNullException (); - - foreach (TSource element in source) - if (predicate (element)) - yield return element; - } - - public static IEnumerable<TSource> Where<TSource> ( - this IQueryable<TSource> source, - Func<TSource, int, bool> predicate) - { - if (source == null || predicate == null) - throw new ArgumentNullException (); + public static decimal? Sum<TSource> ( + this IQueryable<TSource> source, + Func<TSource, decimal?> selector) + { + throw new NotImplementedException (); + } - int counter = 0; - foreach (TSource element in source) { - if (predicate (element, counter)) - yield return element; - counter++; - } - } - - #endregion + public static int Min (this IQueryable<int> source) + { + throw new NotImplementedException (); + } + + public static int? Min (this IQueryable<int?> source) + { + throw new NotImplementedException (); + } + + public static long Min (this IQueryable<long> source) + { + throw new NotImplementedException (); + } + + public static long? Min (this IQueryable<long?> source) + { + throw new NotImplementedException (); + } + + public static double Min (this IQueryable<double> source) + { + throw new NotImplementedException (); + } + + public static double? Min (this IQueryable<double?> source) + { + throw new NotImplementedException (); + } + + public static decimal Min (this IQueryable<decimal> source) + { + throw new NotImplementedException (); + } + + public static decimal? Min (this IQueryable<decimal?> source) + { + throw new NotImplementedException (); + } + + public static TSource Min<TSource> (this IQueryable<TSource> source) + { + throw new NotImplementedException (); + } + + public static int Min<TSource> ( + this IQueryable<TSource> source, + Func<TSource, int> selector) + { + throw new NotImplementedException (); + } + + public static int? Min<TSource> ( + this IQueryable<TSource> source, + Func<TSource, int?> selector) + { + throw new NotImplementedException (); + } + + public static long Min<TSource> ( + this IQueryable<TSource> source, + Func<TSource, long> selector) + { + throw new NotImplementedException (); + } + + public static long? Min<TSource> ( + this IQueryable<TSource> source, + Func<TSource, long?> selector) + { + throw new NotImplementedException (); + } + + public static double Min<TSource> ( + this IQueryable<TSource> source, + Func<TSource, double> selector) + { + throw new NotImplementedException (); + } + + public static double? Min<TSource> ( + this IQueryable<TSource> source, + Func<TSource, double?> selector) + { + throw new NotImplementedException (); + } + + public static decimal Min<TSource> ( + this IQueryable<TSource> source, + Func<TSource, decimal> selector) + { + throw new NotImplementedException (); + } + + public static decimal? Min<TSource> ( + this IQueryable<TSource> source, + Func<TSource, decimal?> selector) + { + throw new NotImplementedException (); + } + + public static TResult Min<TSource, TResult> ( + this IQueryable<TSource> source, + Func<TSource, TResult> selector) + { + throw new NotImplementedException (); + } + + public static int Max (this IQueryable<int> source) + { + throw new NotImplementedException (); + } + + public static int? Max (this IQueryable<int?> source) + { + throw new NotImplementedException (); + } + + public static long Max (this IQueryable<long> source) + { + throw new NotImplementedException (); + } + + public static long? Max (this IQueryable<long?> source) + { + throw new NotImplementedException (); + } + + public static double Max ( + this IQueryable<double> source) + { + throw new NotImplementedException (); + } + + public static double? Max ( + this IQueryable<double?> source) + { + throw new NotImplementedException (); + } + + public static decimal Max ( + this IQueryable<decimal> source) + { + throw new NotImplementedException (); + } + + public static decimal? Max ( + this IQueryable<decimal?> source) + { + throw new NotImplementedException (); + } + + public static TSource Max<TSource> ( + this IQueryable<TSource> source) + { + throw new NotImplementedException (); + } + + public static int Max<TSource> ( + this IQueryable<TSource> source, + Func<TSource, int> selector) + { + throw new NotImplementedException (); + } + + public static int? Max<TSource> ( + this IQueryable<TSource> source, + Func<TSource, int?> selector) + { + throw new NotImplementedException (); + } + + public static long Max<TSource> ( + this IQueryable<TSource> source, + Func<TSource, long> selector) + { + throw new NotImplementedException (); + } + + public static long? Max<TSource> ( + this IQueryable<TSource> source, + Func<TSource, long?> selector) + { + throw new NotImplementedException (); + } + + public static double Max<TSource> ( + this IQueryable<TSource> source, + Func<TSource, double> selector) + { + throw new NotImplementedException (); + } + + public static double? Max<TSource> ( + this IQueryable<TSource> source, + Func<TSource, double?> selector) + { + throw new NotImplementedException (); + } + + public static decimal Max<TSource> ( + this IQueryable<TSource> source, + Func<TSource, decimal> selector) + { + throw new NotImplementedException (); + } + + public static decimal? Max<TSource> ( + this IQueryable<TSource> source, + Func<TSource, decimal?> selector) + { + throw new NotImplementedException (); + } + + public static TResult Max<TSource, TResult> ( + this IQueryable<TSource> source, + Func<TSource, TResult> selector) + { + throw new NotImplementedException (); + } + + public static double Average (this IQueryable<int> source) + { + throw new NotImplementedException (); + } + + public static double? Average (this IQueryable<int?> source) + { + throw new NotImplementedException (); + } + + public static double Average (this IQueryable<long> source) + { + throw new NotImplementedException (); + } + + public static double? Average (this IQueryable<long?> source) + { + throw new NotImplementedException (); + } + + public static double Average (this IQueryable<double> source) + { + throw new NotImplementedException (); + } + + public static double? Average (this IQueryable<double?> source) + { + throw new NotImplementedException (); + } + + public static decimal Average (this IQueryable<decimal> source) + { + throw new NotImplementedException (); + } + + public static decimal? Average (this IQueryable<decimal?> source) + { + throw new NotImplementedException (); + } + + public static double Average<TSource> (this IQueryable<TSource> source, + Func<TSource, int> selector) + { + throw new NotImplementedException (); + } + + public static double? Average<TSource> (this IQueryable<TSource> source, + Func<TSource, int?> selector) + { + throw new NotImplementedException (); + } + + public static double Average<TSource> (this IQueryable<TSource> source, + Func<TSource, long> selector) + { + throw new NotImplementedException (); + } + + public static double? Average<TSource> (this IQueryable<TSource> source, + Func<TSource, long?> selector) + { + throw new NotImplementedException (); + } + + public static double Average<TSource> (this IQueryable<TSource> source, + Func<TSource, double> selector) + { + throw new NotImplementedException (); + } + + public static double? Average<TSource> (this IQueryable<TSource> source, + Func<TSource, double?> selector) + { + throw new NotImplementedException (); + } + + public static decimal Average<TSource> (this IQueryable<TSource> source, + Func<TSource, decimal> selector) + { + throw new NotImplementedException (); + } + + public static decimal? Average<TSource> (this IQueryable<TSource> source, + Func<TSource, decimal?> selector) + { + throw new NotImplementedException (); + } + + public static TSource Aggregate<TSource> ( + this IQueryable<TSource> source, + Func<TSource, TSource, TSource> func) + { + throw new NotImplementedException (); + } + + public static U Aggregate<TSource, U> ( + this IQueryable<TSource> source, + U seed, + Func<U, TSource, U> func) + { + throw new NotImplementedException (); + } - #region Distinct - -/* [System.Runtime.CompilerServices.Extension] - public static IQueryable<TSource> Distinct<TSource> ( - IQueryable<TSource> source) - { - if (source == null) - throw new ArgumentNullException (); - - List<TSource> items = new List<TSource> (); - foreach (TSource element in source) { - if (IndexOf (items, element) == -1) { - items.Add (element); - yield return element; - } - } - }*/ - - #endregion - - #region Union - -/* [System.Runtime.CompilerServices.Extension] - public static IQueryable<TSource> Union<TSource> ( - IQueryable<TSource> first, - IQueryable<TSource> second) - { - if (first == null || second == null) - throw new ArgumentNullException (); - - List<TSource> items = new List<TSource> (); - foreach (TSource element in first) { - if (IndexOf (items, element) == -1) { - items.Add (element); - yield return element; - } - } - foreach (TSource element in second) { - if (IndexOf (items, element) == -1) { - items.Add (element); - yield return element; - } - } - }*/ - - #endregion - - #region Intersect - -/* [System.Runtime.CompilerServices.Extension] - public static IQueryable<TSource> Intersect<TSource> ( - IQueryable<TSource> first, - IQueryable<TSource> second) - { - if (first == null || second == null) - throw new ArgumentNullException (); + public static IEnumerable<TSource> Concat<TSource> ( + this IQueryable<TSource> first, + IEnumerable<TSource> second) + { + throw new NotImplementedException (); + } + + public static IEnumerable<TResult> OfType<TResult> (this IQueryable source) + { + throw new NotImplementedException (); + } - List<TSource> items = new List<TSource> (Distinct (first)); - bool[] marked = new bool [items.Count]; - for (int i = 0; i < marked.Length; i++) - marked[i] = false; - - foreach (TSource element in second) { - int index = IndexOf (items, element); - if (index != -1) - marked [index] = true; - } - for (int i = 0; i < marked.Length; i++) { - if (marked [i]) - yield return items [i]; - } - }*/ - - #endregion - - #region Except - - /*[System.Runtime.CompilerServices.Extension] - public static IQueryable<TSource> Except<TSource> ( - IQueryable<TSource> first, - IQueryable<TSource> second) - { - if (first == null || second == null) - throw new ArgumentNullException (); + public static IEnumerable<TResult> Cast<TResult> (this IQueryable source) + { + throw new NotImplementedException (); + } + + public static TSource First<TSource> (this IQueryable<TSource> source) + { + throw new NotImplementedException (); + } + + public static TSource First<TSource> ( + this IQueryable<TSource> source, + Func<TSource, bool> predicate) + { + throw new NotImplementedException (); + } + + public static TSource FirstOrDefault<TSource> (this IQueryable<TSource> source) + { + throw new NotImplementedException (); + } + + public static TSource FirstOrDefault<TSource> ( + this IQueryable<TSource> source, + Func<TSource, bool> predicate) + { + throw new NotImplementedException (); + } + + public static TSource Last<TSource> (this IQueryable<TSource> source) + { + throw new NotImplementedException (); + } + + public static TSource Last<TSource> ( + this IQueryable<TSource> source, + Func<TSource, bool> predicate) + { + throw new NotImplementedException (); + } + + public static TSource LastOrDefault<TSource> (this IQueryable<TSource> source) + { + throw new NotImplementedException (); + } + + public static TSource LastOrDefault<TSource> ( + this IQueryable<TSource> source, + Func<TSource, bool> predicate) + { + throw new NotImplementedException (); + } + + public static TSource Single<TSource> (this IQueryable<TSource> source) + { + throw new NotImplementedException (); + } + + public static TSource Single<TSource> ( + this IQueryable<TSource> source, + Func<TSource, bool> predicate) + { + throw new NotImplementedException (); + } + + public static TSource SingleOrDefault<TSource> (this IQueryable<TSource> source) + { + throw new NotImplementedException (); + } + + public static TSource SingleOrDefault<TSource> ( + this IQueryable<TSource> source, + Func<TSource, bool> predicate) + { + throw new NotImplementedException (); + } + + public static TSource ElementAt<TSource> ( + this IQueryable<TSource> source, + int index) + { + throw new NotImplementedException (); + } + + public static TSource ElementAtOrDefault<TSource> ( + this IQueryable<TSource> source, + int index) + { + throw new NotImplementedException (); + } + + public static IEnumerable<TSource> DefaultIfEmpty<TSource> ( + this IQueryable<TSource> source) + { + throw new NotImplementedException (); + } + + public static IEnumerable<TSource> DefaultIfEmpty<TSource> ( + this IQueryable<TSource> source, + TSource defaultValue) + { + throw new NotImplementedException (); + } - List<TSource> items = new List<TSource> (Distinct (first)); - foreach (TSource element in second) { - int index = IndexOf (items, element); - if (index == -1) - items.Add (element); - else - items.RemoveAt (index); - } - foreach (TSource item in items) - yield return item; - }*/ - - #endregion - - # region Join - - public static IEnumerable<V> Join<TSource, U, K, V> ( - this IQueryable<TSource> outer, - IQueryable<U> inner, - Func<TSource, K> outerKeySelector, - Func<U, K> innerKeySelector, - Func<TSource, U, V> resultSelector) - { - if (outer == null || inner == null || outerKeySelector == null || - innerKeySelector == null || resultSelector == null) - throw new ArgumentNullException (); - - /*Lookup<K, U> innerKeys = ToLookup<U, K> (inner, innerKeySelector); - /*Dictionary<K, List<U>> innerKeys = new Dictionary<K, List<U>> (); - foreach (U element in inner) - { - K innerKey = innerKeySelector (element); - if (!innerKeys.ContainsKey (innerKey)) - innerKeys.Add (innerKey, new List<U> ()); - innerKeys[innerKey].Add (element); - }*/ - /* - foreach (TSource element in outer) - { - K outerKey = outerKeySelector (element); - if (innerKeys.Contains (outerKey)) - { - foreach (U innerElement in innerKeys [outerKey]) - yield return resultSelector (element, innerElement); - } - }*/ - throw new NotImplementedException (); - } - - # endregion - - # region GroupJoin - - /*[System.Runtime.CompilerServices.Extension] - public static IQueryable<V> GroupJoin<TSource, U, K, V> ( - IQueryable<TSource> outer, - IQueryable<U> inner, - Func<TSource, K> outerKeySelector, - Func<U, K> innerKeySelector, - Func<TSource, IQueryable<U>, V> resultSelector) - { - if (outer == null || inner == null || outerKeySelector == null || - innerKeySelector == null || resultSelector == null) - throw new ArgumentNullException (); - - Lookup<K, U> innerKeys = ToLookup<U, K> (inner, innerKeySelector); - /*Dictionary<K, List<U>> innerKeys = new Dictionary<K, List<U>> (); - foreach (U element in inner) - { - K innerKey = innerKeySelector (element); - if (!innerKeys.ContainsKey (innerKey)) - innerKeys.Add (innerKey, new List<U> ()); - innerKeys[innerKey].Add (element); - }*/ - - /*foreach (TSource element in outer) - { - K outerKey = outerKeySelector (element); - if (innerKeys.Contains (outerKey)) - yield return resultSelector (element, innerKeys [outerKey]); - } - }*/ - - # endregion + public static IEnumerable<TSource> Repeat<TSource> (this TSource element, int count) + { + throw new NotImplementedException (); + } + + private static List<TSource> ContainsGroup<K, TSource>( + Dictionary<K, List<TSource>> items, K key, IEqualityComparer<K> comparer) + { + throw new NotImplementedException (); + } + + public static IQueryable<IGrouping<K, TSource>> GroupBy<TSource, K> ( + this IQueryable<TSource> source, + Func<TSource, K> keySelector) + { + throw new NotImplementedException (); + } + + public static IQueryable<IGrouping<K, E>> GroupBy<TSource, K, E> ( + this IQueryable<TSource> source, + Func<TSource, K> keySelector, + Func<TSource, E> elementSelector) + { + throw new NotImplementedException (); + } + + public static IEnumerable<IGrouping<K, E>> GroupBy<TSource, K, E> ( + this IQueryable<TSource> source, + Func<TSource, K> keySelector, + Func<TSource, E> elementSelector, + IEqualityComparer<K> comparer) + { + throw new NotImplementedException (); + } + + public static IOrderedQueryable<TSource> OrderBy<TSource, TKey> ( + this IQueryable<TSource> source, + Func<TSource, TKey> keySelector) + { + throw new NotImplementedException (); + } + + public static IOrderedQueryable<TSource> OrderBy<TSource, TKey> ( + this IQueryable<TSource> source, + Func<TSource, TKey> keySelector, + IComparer<TKey> comparer) + { + throw new NotImplementedException (); + } + + public static IOrderedQueryable<TSource> OrderByDescending<TSource, TKey> ( + this IQueryable<TSource> source, + Func<TSource, TKey> keySelector) + { + throw new NotImplementedException (); + } + + public static IOrderedQueryable<TSource> OrderByDescending<TSource, TKey> ( + this IQueryable<TSource> source, + Func<TSource, TKey> keySelector, + IComparer<TKey> comparer) + { + throw new NotImplementedException (); + } + + public static IOrderedQueryable<TSource> ThenBy<TSource, TKey> ( + this IOrderedQueryable<TSource> source, + Func<TSource, TKey> keySelector) + { + throw new NotImplementedException (); + } + + public static IOrderedQueryable<TSource> ThenBy<TSource, TKey> ( + this IOrderedQueryable<TSource> source, + Func<TSource, TKey> keySelector, + IComparer<TKey> comparer) + { + throw new NotImplementedException (); + } + + public static IOrderedQueryable<TSource> ThenByDescending<TSource, TKey> ( + this IOrderedQueryable<TSource> source, + Func<TSource, TKey> keySelector) + { + throw new NotImplementedException (); + } + + public static IOrderedQueryable<TSource> ThenByDescending<TSource, TKey> ( + this IOrderedQueryable<TSource> source, + Func<TSource, TKey> keySelector, + IComparer<TKey> comparer) + { + throw new NotImplementedException (); + } + + public static IQueryable<TSource> Reverse<TSource> ( + this IQueryable<TSource> source) + { + throw new NotImplementedException (); + } + + public static IEnumerable<TSource> Take<TSource> ( + this IQueryable<TSource> source, + int count) + { + throw new NotImplementedException (); + } + + public static IEnumerable<TSource> Skip<TSource> ( + this IQueryable<TSource> source, + int count) + { + throw new NotImplementedException (); + } - // These methods are not included in the - // .NET Standard Query Operators Specification, - // but they provide additional useful commands - - #region Compare - - private static bool Equals<TSource> ( - this TSource first, TSource second) - { - // Mostly, values in Enumerable<TSource> - // sequences need to be compared using - // Equals and GetHashCode - - if (first == null || second == null) - return (first == null && second == null); - else - return ((first.Equals (second) || - first.GetHashCode () == second.GetHashCode ())); - } - - #endregion -/* - #region IndexOf - - [System.Runtime.CompilerServices.Extension] - public static int IndexOf<TSource>( - IQueryable<TSource> source, - TSource item) - { - int counter = 0; - foreach (TSource element in source) { - if (Equals(element, item)) - return counter; - counter++; - } - // The item was not found - return -1; - } - - #endregion -*/ - } + public static IEnumerable<TSource> TakeWhile<TSource> ( + this IQueryable<TSource> source, + Func<TSource, bool> predicate) + { + throw new NotImplementedException (); + } + + public static IEnumerable<TSource> TakeWhile<TSource> ( + this IQueryable<TSource> source, + Func<TSource, int, bool> predicate) + { + throw new NotImplementedException (); + } + + public static IEnumerable<TSource> SkipWhile<TSource> ( + this IQueryable<TSource> source, + Func<TSource, bool> predicate) + { + throw new NotImplementedException (); + } + + public static IEnumerable<TSource> SkipWhile<TSource> ( + this IQueryable<TSource> source, + Func<TSource, int, bool> predicate) + { + throw new NotImplementedException (); + } + + public static IEnumerable<TResult> Select<TSource, TResult> ( + this IQueryable<TSource> source, + Func<TSource, TResult> selector) + { + throw new NotImplementedException (); + } + + public static IEnumerable<TResult> Select<TSource, TResult> ( + this IQueryable<TSource> source, + Func<TSource, int, TResult> selector) + { + throw new NotImplementedException (); + } + + public static IEnumerable<TResult> SelectMany<TSource, TResult> ( + this IQueryable<TSource> source, + Func<TSource, IQueryable<TResult>> selector) + { + throw new NotImplementedException (); + } + + public static IEnumerable<TResult> SelectMany<TSource, TResult> ( + this IQueryable<TSource> source, + Func<TSource, int, IQueryable<TResult>> selector) + { + throw new NotImplementedException (); + } + + public static bool Any<TSource> (this IQueryable<TSource> source) + { + throw new NotImplementedException (); + } + + public static bool Any<TSource> ( + this IQueryable<TSource> source, + Func<TSource, bool> predicate) + { + throw new NotImplementedException (); + } + + public static bool All<TSource> ( + this IQueryable<TSource> source, + Func<TSource, bool> predicate) + { + throw new NotImplementedException (); + } + + public static bool Contains<TSource> (this IQueryable<TSource> source, TSource value) + { + throw new NotImplementedException (); + } + + public static IEnumerable<TSource> Where<TSource> ( + this IQueryable<TSource> source, + Func<TSource, bool> predicate) + { + throw new NotImplementedException (); + } + + public static IEnumerable<TSource> Where<TSource> ( + this IQueryable<TSource> source, + Func<TSource, int, bool> predicate) + { + throw new NotImplementedException (); + } + + public static IEnumerable<V> Join<TSource, U, K, V> ( + this IQueryable<TSource> outer, + IQueryable<U> inner, + Func<TSource, K> outerKeySelector, + Func<U, K> innerKeySelector, + Func<TSource, U, V> resultSelector) + { + throw new NotImplementedException (); + } + } } |