mcs/class/System.Core/System.Linq.Parallel.QueryNodes/QueryGroupByNode.cs

   1 #if NET_4_0
   2 //
   3 // QueryOrderByNode.cs
   4 //
   5 // Author:
   6 //       Jérémie "Garuma" Laval <jeremie.laval@gmail.com>
   7 //
   8 // Copyright (c) 2010 Jérémie "Garuma" Laval
   9 //
  10 // Permission is hereby granted, free of charge, to any person obtaining a copy
  11 // of this software and associated documentation files (the "Software"), to deal
  12 // in the Software without restriction, including without limitation the rights
  13 // to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
  14 // copies of the Software, and to permit persons to whom the Software is
  15 // furnished to do so, subject to the following conditions:
  16 //
  17 // The above copyright notice and this permission notice shall be included in
  18 // all copies or substantial portions of the Software.
  19 //
  20 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  21 // IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  22 // FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
  23 // AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  24 // LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  25 // OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
  26 // THE SOFTWARE.
  27
  28 using System;
  29 using System.Threading;
  30 using System.Collections;
  31 using System.Collections.Generic;
  32 using System.Collections.Concurrent;
  33
  34 namespace System.Linq
  35 {
  36         internal class QueryGroupByNode<TSource, TKey, TElement> : QueryStreamNode<IGrouping<TKey, TElement>, TSource>
  37         {
  38                 Func<TSource, TKey> keySelector;
  39                 Func<TSource, TElement> elementSelector;
  40                 IEqualityComparer<TKey> comparer;
  41
  42                 public QueryGroupByNode (QueryBaseNode<TSource> parent,
  43                                          Func<TSource, TKey> keySelector,
  44                                          Func<TSource, TElement> elementSelector,
  45                                          IEqualityComparer<TKey> comparer)
  46                         : base (parent, false)
  47                 {
  48                         this.keySelector = keySelector;
  49                         this.elementSelector = elementSelector;
  50                         this.comparer = comparer;
  51                 }
  52
  53                 internal override IEnumerable<IGrouping<TKey, TElement>> GetSequential ()
  54                 {
  55                         IEnumerable<TSource> src =  Parent.GetSequential ();
  56
  57                         return src.GroupBy (keySelector, elementSelector, comparer);
  58                 }
  59
  60                 internal override IList<IEnumerable<KeyValuePair<long, IGrouping<TKey, TElement>>>> GetOrderedEnumerables (QueryOptions options)
  61                 {
  62                         throw new System.NotImplementedException();
  63                 }
  64
  65                 internal override IList<IEnumerable<IGrouping<TKey, TElement>>> GetEnumerables (QueryOptions options)
  66                 {
  67                         throw new System.NotImplementedException();
  68                 }
  69         }
  70 }
  71
  72 #endif