1 // QueryOrderGuardNode.cs
4 // Jérémie "Garuma" Laval <jeremie.laval@gmail.com>
6 // Copyright (c) 2010 Jérémie "Garuma" Laval
8 // Permission is hereby granted, free of charge, to any person obtaining a copy
9 // of this software and associated documentation files (the "Software"), to deal
10 // in the Software without restriction, including without limitation the rights
11 // to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
12 // copies of the Software, and to permit persons to whom the Software is
13 // furnished to do so, subject to the following conditions:
15 // The above copyright notice and this permission notice shall be included in
16 // all copies or substantial portions of the Software.
18 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
19 // IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
20 // FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
21 // AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
22 // LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
23 // OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
28 using System.Collections.Generic;
30 namespace System.Linq.Parallel.QueryNodes
32 internal interface QueryOrderGuardNode : IVisitableNode {
33 bool EnsureOrder { get; }
36 internal abstract class QueryOrderGuardNode<T> : QueryStreamNode<T, T>, QueryOrderGuardNode
40 internal QueryOrderGuardNode (QueryBaseNode<T> parent, bool ensureOrder)
41 : base (parent, ensureOrder)
43 this.ensureOrder = ensureOrder;
46 public bool EnsureOrder {
52 internal override IEnumerable<T> GetSequential ()
54 return Parent.GetSequential ();
57 public override void Visit (INodeVisitor visitor)
59 visitor.Visit ((QueryOrderGuardNode)this);
63 internal class QueryAsUnorderedNode<T> : QueryOrderGuardNode<T>
65 internal QueryAsUnorderedNode (QueryBaseNode<T> parent)
66 : base (parent, false)
71 internal override IList<IEnumerable<T>> GetEnumerables (QueryOptions options)
73 return Parent.GetEnumerables (options);
76 internal override IList<IEnumerable<KeyValuePair<long, T>>> GetOrderedEnumerables (QueryOptions options)
78 return Parent.GetOrderedEnumerables (options);
83 internal class QueryAsOrderedNode<T> : QueryOrderGuardNode<T>
85 internal QueryAsOrderedNode (QueryBaseNode<T> parent)
91 internal override IList<IEnumerable<T>> GetEnumerables (QueryOptions options)
93 return Parent.GetEnumerables (options);
96 internal override IList<IEnumerable<KeyValuePair<long, T>>> GetOrderedEnumerables (QueryOptions options)
98 return Parent.GetOrderedEnumerables (options);