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
29 using System.Threading;
30 using System.Collections;
31 using System.Collections.Generic;
33 namespace System.Linq.Parallel.QueryNodes
35 internal class QueryConcatNode<TSource> : QueryMuxNode<TSource, TSource, TSource>
37 public QueryConcatNode (QueryBaseNode<TSource> first, QueryBaseNode<TSource> second)
38 : base (first, second)
42 internal override IList<IEnumerable<TSource>> GetEnumerables (QueryOptions options)
44 var second = Second.GetEnumerables (options);
46 return Parent.GetEnumerables (options)
47 .Select ((f, i) => CombineEnumerables (f, second[i]))
51 internal override IList<IEnumerable<KeyValuePair<long, TSource>>> GetOrderedEnumerables (QueryOptions options)
53 var second = Second.GetOrderedEnumerables (options);
55 return Parent.GetOrderedEnumerables (options)
56 .Select ((f, i) => CombineEnumerables (f, second[i]))
60 internal override IEnumerable<TSource> GetSequential ()
62 IEnumerable<TSource> first = Parent.GetSequential ();
63 IEnumerable<TSource> second = Second.GetSequential ();
65 return first.Concat (second);
68 IEnumerable<TResult> CombineEnumerables<TResult> (IEnumerable<TResult> f, IEnumerable<TResult> s)