/*
* Copyright (c) 2007-2014 Concurrent, Inc. All Rights Reserved.
*
* Project and contact information: http://www.cascading.org/
*
* This file is part of the Cascading project.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package cascading.flow.planner.iso.subgraph.partitioner;
import cascading.flow.planner.iso.ElementAnnotation;
import cascading.flow.planner.iso.expression.ExpressionGraph;
import cascading.flow.planner.iso.subgraph.SubGraphIterator;
import cascading.flow.planner.iso.subgraph.iterator.ExpressionSubGraphIterator;
import cascading.flow.planner.iso.subgraph.iterator.IncludeRemainderSubGraphIterator;
import cascading.flow.planner.iso.subgraph.iterator.UniquePathSubGraphIterator;
/**
*
*/
public class UniquePathGraphPartitioner extends ExpressionGraphPartitioner
{
boolean includeRemainders = false;
public UniquePathGraphPartitioner( ExpressionGraph contractionGraph, ExpressionGraph expressionGraph, ElementAnnotation... annotations )
{
super( contractionGraph, expressionGraph, annotations );
}
public UniquePathGraphPartitioner( ExpressionGraph contractionGraph, ExpressionGraph expressionGraph, boolean includeRemainders, ElementAnnotation... annotations )
{
super( contractionGraph, expressionGraph, annotations );
this.includeRemainders = includeRemainders;
}
@Override
protected SubGraphIterator wrapIterator( ExpressionSubGraphIterator expressionIterator )
{
if( !includeRemainders )
return new UniquePathSubGraphIterator( expressionIterator );
return new IncludeRemainderSubGraphIterator( new UniquePathSubGraphIterator( expressionIterator ) );
}
}