5 // Jérémie "Garuma" Laval <jeremie.laval@gmail.com>
7 // Copyright (c) 2010 Jérémie "Garuma" Laval
9 // Permission is hereby granted, free of charge, to any person obtaining a copy
10 // of this software and associated documentation files (the "Software"), to deal
11 // in the Software without restriction, including without limitation the rights
12 // to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
13 // copies of the Software, and to permit persons to whom the Software is
14 // furnished to do so, subject to the following conditions:
16 // The above copyright notice and this permission notice shall be included in
17 // all copies or substantial portions of the Software.
19 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
20 // IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
21 // FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
22 // AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
23 // LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
24 // OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
30 using System.Collections.Generic;
31 using System.Collections.Concurrent;
33 namespace System.Linq.Parallel.QueryNodes
35 internal class QuerySelectNode<TResult, TSource> : QueryStreamNode<TResult, TSource>
37 Func<TSource, int, TResult> indexedSelector;
38 Func<TSource, TResult> selector;
40 internal QuerySelectNode (QueryBaseNode<TSource> parent, Func<TSource, TResult> selector)
41 : base (parent, false)
43 this.selector = selector;
46 internal QuerySelectNode (QueryBaseNode<TSource> parent, Func<TSource, int, TResult> selector)
49 this.indexedSelector = selector;
52 internal override IEnumerable<TResult> GetSequential ()
55 Parent.GetSequential ().Select (indexedSelector) :
56 Parent.GetSequential ().Select (selector);
59 internal override IList<IEnumerable<TResult>> GetEnumerablesIndexed (QueryOptions options)
61 return Parent.GetOrderedEnumerables (options)
62 .Select ((i) => i.Select ((e) => indexedSelector (e.Value, (int)e.Key)))
66 internal override IList<IEnumerable<TResult>> GetEnumerablesNonIndexed (QueryOptions options)
68 return Parent.GetEnumerables (options)
69 .Select ((i) => i.Select (selector))
73 internal override IList<IEnumerable<KeyValuePair<long, TResult>>> GetOrderedEnumerables (QueryOptions options)
75 return Parent.GetOrderedEnumerables (options)
78 i.Select ((e) => new KeyValuePair<long, TResult> (e.Key, indexedSelector (e.Value, (int)e.Key))) :
79 i.Select ((e) => new KeyValuePair<long, TResult> (e.Key, selector (e.Value))))