104 lines
2.8 KiB
C#
104 lines
2.8 KiB
C#
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// QueryOrderGuardNode.cs
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//
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// Author:
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// Jérémie "Garuma" Laval <jeremie.laval@gmail.com>
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//
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// Copyright (c) 2010 Jérémie "Garuma" Laval
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//
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// Permission is hereby granted, free of charge, to any person obtaining a copy
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// of this software and associated documentation files (the "Software"), to deal
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// in the Software without restriction, including without limitation the rights
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// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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// copies of the Software, and to permit persons to whom the Software is
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// furnished to do so, subject to the following conditions:
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//
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// The above copyright notice and this permission notice shall be included in
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// all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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// THE SOFTWARE.
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#if NET_4_0
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using System;
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using System.Collections.Generic;
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namespace System.Linq.Parallel.QueryNodes
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{
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internal interface QueryOrderGuardNode : IVisitableNode {
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bool EnsureOrder { get; }
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}
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internal abstract class QueryOrderGuardNode<T> : QueryStreamNode<T, T>, QueryOrderGuardNode
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{
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bool ensureOrder;
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internal QueryOrderGuardNode (QueryBaseNode<T> parent, bool ensureOrder)
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: base (parent, ensureOrder)
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{
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this.ensureOrder = ensureOrder;
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}
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public bool EnsureOrder {
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get {
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return ensureOrder;
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}
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}
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internal override IEnumerable<T> GetSequential ()
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{
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return Parent.GetSequential ();
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}
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public override void Visit (INodeVisitor visitor)
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{
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visitor.Visit ((QueryOrderGuardNode)this);
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}
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}
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internal class QueryAsUnorderedNode<T> : QueryOrderGuardNode<T>
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{
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internal QueryAsUnorderedNode (QueryBaseNode<T> parent)
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: base (parent, false)
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{
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}
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internal override IList<IEnumerable<T>> GetEnumerables (QueryOptions options)
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{
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return Parent.GetEnumerables (options);
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}
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internal override IList<IEnumerable<KeyValuePair<long, T>>> GetOrderedEnumerables (QueryOptions options)
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{
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return Parent.GetOrderedEnumerables (options);
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}
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}
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internal class QueryAsOrderedNode<T> : QueryOrderGuardNode<T>
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{
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internal QueryAsOrderedNode (QueryBaseNode<T> parent)
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: base (parent, true)
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{
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}
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internal override IList<IEnumerable<T>> GetEnumerables (QueryOptions options)
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{
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return Parent.GetEnumerables (options);
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}
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internal override IList<IEnumerable<KeyValuePair<long, T>>> GetOrderedEnumerables (QueryOptions options)
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{
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return Parent.GetOrderedEnumerables (options);
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}
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}
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}
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#endif
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