/**
* Copyright 2010 JBoss Inc
*
* 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 org.drools.planner.core.localsearch.decider.selector;
import java.util.Collections;
import java.util.Iterator;
import java.util.List;
import org.drools.planner.core.localsearch.LocalSearchSolverScope;
import org.drools.planner.core.localsearch.StepScope;
import org.drools.planner.core.move.Move;
/**
* @author Geoffrey De Smet
*/
public class TopListSelector extends AbstractSelector {
private int topSize;
private List<Move> topList;
public void setTopSize(int topSize) {
this.topSize = topSize;
}
// ************************************************************************
// Worker methods
// ************************************************************************
@Override
public void solvingStarted(LocalSearchSolverScope localSearchSolverScope) {
topList = Collections.emptyList();
}
public Iterator<Move> moveIterator(StepScope stepScope) {
return topList.iterator();
}
@Override
public void stepTaken(StepScope stepScope) {
topList = decider.getForager().getTopList(topSize);
}
}