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//
// QueryOptionNode.cs
//
// Author:
// Jérémie "Garuma" Laval <jeremie.laval@gmail.com>
//
// Copyright (c) 2010 Jérémie "Garuma" Laval
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.
#if NET_4_0
using System;
using System.Threading;
using System.Collections.Generic;
namespace System.Linq.Parallel.QueryNodes
{
// The first four elements correspond to the public operator With*
// Last CancellationToken parameter is used internally for ImplementerToken
using OptionsList = Tuple<ParallelMergeOptions?, ParallelExecutionMode?, CancellationToken?, int, CancellationTokenSource>;
interface QueryOptionNode : IVisitableNode {
OptionsList GetOptions ();
}
internal class QueryOptionNode<T> : QueryChildNode<T, T>, QueryOptionNode
{
public QueryOptionNode (QueryBaseNode<T> parent)
: base (parent)
{
}
public virtual OptionsList GetOptions ()
{
return new OptionsList (null, null, null, -1, null);
}
internal override IList<IEnumerable<T>> GetEnumerables (QueryOptions options)
{
return Parent.GetEnumerables (options);
}
internal override IList<IEnumerable<KeyValuePair<long, T>>> GetOrderedEnumerables (QueryOptions options)
{
return Parent.GetOrderedEnumerables (options);
}
internal override IEnumerable<T> GetSequential ()
{
return Parent.GetSequential ();
}
public override void Visit (INodeVisitor visitor)
{
visitor.Visit ((QueryOptionNode)this);
}
}
internal class ParallelExecutionModeNode<T> : QueryOptionNode<T>
{
ParallelExecutionMode mode;
internal ParallelExecutionModeNode (ParallelExecutionMode mode, QueryBaseNode<T> parent)
: base (parent)
{
this.mode = mode;
}
public override OptionsList GetOptions ()
{
return new OptionsList (null, mode, null, -1, null);
}
}
internal class ParallelMergeOptionsNode<T> : QueryOptionNode<T>
{
ParallelMergeOptions opts;
internal ParallelMergeOptionsNode (ParallelMergeOptions opts, QueryBaseNode<T> parent)
: base (parent)
{
this.opts = opts;
}
public override OptionsList GetOptions ()
{
return new OptionsList (opts, null, null, -1, null);
}
}
internal class CancellationTokenNode<T> : QueryOptionNode<T>
{
CancellationToken token;
internal CancellationTokenNode (CancellationToken token, QueryBaseNode<T> parent)
: base (parent)
{
this.token = token;
}
public override OptionsList GetOptions ()
{
return new OptionsList (null, null, token, -1, null);
}
}
internal class DegreeOfParallelismNode<T> : QueryOptionNode<T>
{
int degreeParallelism;
internal DegreeOfParallelismNode (int degreeParallelism, QueryBaseNode<T> parent)
: base (parent)
{
this.degreeParallelism = degreeParallelism;
}
public override OptionsList GetOptions ()
{
return new OptionsList (null, null, null, degreeParallelism, null);
}
}
internal class ImplementerTokenNode<T> : QueryOptionNode<T>
{
CancellationTokenSource source;
internal ImplementerTokenNode (CancellationTokenSource token, QueryBaseNode<T> parent)
: base (parent)
{
this.source = token;
}
public override OptionsList GetOptions ()
{
return new OptionsList (null, null, null, -1, source);
}
}
}
#endif
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