/**
* 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.termination;
import org.drools.planner.core.localsearch.LocalSearchSolverScope;
import org.drools.planner.core.localsearch.StepScope;
import org.drools.planner.core.score.Score;
/**
* @author Geoffrey De Smet
*/
public class ScoreAttainedTermination extends AbstractTermination {
private Score scoreAttained;
public void setScoreAttained(Score scoreAttained) {
this.scoreAttained = scoreAttained;
}
// ************************************************************************
// Worker methods
// ************************************************************************
public boolean isTerminated(StepScope stepScope) {
Score bestScore = stepScope.getLocalSearchSolverScope().getBestScore();
return bestScore.compareTo(scoreAttained) >= 0;
}
public double calculateTimeGradient(StepScope stepScope) {
LocalSearchSolverScope localSearchSolverScope = stepScope.getLocalSearchSolverScope();
Score startingScore = localSearchSolverScope.getStartingScore();
Score stepScore = localSearchSolverScope.getLastCompletedStepScope().getScore();
return localSearchSolverScope.getScoreDefinition()
.calculateTimeGradient(startingScore, scoreAttained, stepScore);
}
}