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#if NET_4_0
//
// OrderablePartitioner.cs
//
// Author:
// Jérémie "Garuma" Laval <jeremie.laval@gmail.com>
//
// Copyright (c) 2009 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.
using System;
using System.Collections.Generic;
namespace System.Collections.Concurrent
{
public abstract class OrderablePartitioner<TSource> : Partitioner<TSource>
{
bool keysOrderedInEachPartition;
bool keysOrderedAcrossPartitions;
bool keysNormalized;
protected OrderablePartitioner (bool keysOrderedInEachPartition,
bool keysOrderedAcrossPartitions,
bool keysNormalized) : base ()
{
this.keysOrderedInEachPartition = keysOrderedInEachPartition;
this.keysOrderedAcrossPartitions = keysOrderedAcrossPartitions;
this.keysNormalized = keysNormalized;
}
public override IEnumerable<TSource> GetDynamicPartitions ()
{
foreach (KeyValuePair<long, TSource> item in GetOrderableDynamicPartitions ())
yield return item.Value;
}
public override IList<IEnumerator<TSource>> GetPartitions (int partitionCount)
{
IEnumerator<TSource>[] temp = new IEnumerator<TSource>[partitionCount];
IList<IEnumerator<KeyValuePair<long, TSource>>> enumerators
= GetOrderablePartitions (partitionCount);
for (int i = 0; i < enumerators.Count; i++)
temp[i] = GetProxyEnumerator (enumerators[i]);
return temp;
}
IEnumerator<TSource> GetProxyEnumerator (IEnumerator<KeyValuePair<long, TSource>> enumerator)
{
while (enumerator.MoveNext ())
yield return enumerator.Current.Value;
}
public abstract IList<IEnumerator<KeyValuePair<long, TSource>>> GetOrderablePartitions(int partitionCount);
public virtual IEnumerable<KeyValuePair<long, TSource>> GetOrderableDynamicPartitions()
{
if (!SupportsDynamicPartitions)
throw new NotSupportedException ();
return null;
}
public bool KeysOrderedInEachPartition {
get {
return keysOrderedInEachPartition;
}
}
public bool KeysOrderedAcrossPartitions {
get {
return keysOrderedAcrossPartitions;
}
}
public bool KeysNormalized {
get {
return keysNormalized;
}
}
}
}
#endif
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