/*
* 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.deciderscorecomparator;
import java.util.Comparator;
import org.drools.planner.core.score.Score;
import org.drools.planner.core.score.HardAndSoftScore;
/**
* Compares 2 HardAndSoftScore based on the calculation the hard multiplied by a weight to the soft.
*/
public class HardPenaltyDeciderScoreComparator implements Comparator<Score> {
private int hardWeight;
public HardPenaltyDeciderScoreComparator(int hardWeight) {
this.hardWeight = hardWeight;
}
public int getHardWeight() {
return hardWeight;
}
public int compare(Score s1, Score s2) {
HardAndSoftScore score1 = (HardAndSoftScore) s1;
HardAndSoftScore score2 = (HardAndSoftScore) s2;
int score1Side = score1.getHardScore() * hardWeight + score1.getSoftScore();
int score2Side = score2.getHardScore() * hardWeight + score2.getSoftScore();
return score1Side < score2Side ? -1 : (score1Side == score2Side ? 0 : 1);
}
}