2009-08-19 Jérémie Laval <jeremie.laval@gmail.com>
[mono.git] / mcs / class / corlib / System.Collections.Concurrent / Partitioner.cs
1 #if NET_4_0
2 // 
3 // Partitioner.cs
4 //  
5 // Author:
6 //       Jérémie "Garuma" Laval <jeremie.laval@gmail.com>
7 // 
8 // Copyright (c) 2009 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.Collections.Generic;
30
31 namespace System.Collections.Concurrent
32 {
33         public static class Partitioner
34         {
35                 public static OrderablePartitioner<TSource> Create<TSource> (IEnumerable<TSource> source)
36                 {
37                         IList<TSource> tempIList = source as IList<TSource>;
38                         if (tempIList != null)
39                                 return Create (tempIList, true);
40                         
41                         return new EnumerablePartitioner<TSource> (source);
42                 }
43                 
44           public static OrderablePartitioner<TSource> Create<TSource> (TSource[] source, bool loadBalance)
45                 {
46                         return Create ((IList<TSource>)source, loadBalance);
47                 }
48                 
49           public static OrderablePartitioner<TSource> Create<TSource> (IList<TSource> source, bool loadBalance)
50                 {
51                         return new ListPartitioner<TSource> (source);
52                 }
53         }
54         
55         public abstract class Partitioner<TSource>
56         {
57                 protected Partitioner ()
58                 {
59                         
60                 }
61                 
62                 public virtual IEnumerable<TSource> GetDynamicPartitions ()
63                 {
64                         if (!SupportsDynamicPartitions)
65                                 throw new NotSupportedException ();
66                         
67                         return null;
68                 }
69                 
70                 public abstract IList<IEnumerator<TSource>> GetPartitions (int partitionCount);
71                 
72                 public virtual bool SupportsDynamicPartitions {
73                         get {
74                                 return false;
75                         }
76                 }
77         }
78 }
79 #endif