/*
* Copyright 2013 Red Hat, Inc. and/or its affiliates.
*
* 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.optaplanner.core.impl.score;
import org.optaplanner.core.api.score.Score;
import org.optaplanner.core.api.score.buildin.bendable.BendableScore;
import org.optaplanner.core.api.score.buildin.bendablebigdecimal.BendableBigDecimalScore;
import org.optaplanner.core.api.score.buildin.bendablelong.BendableLongScore;
import org.optaplanner.core.api.score.buildin.hardmediumsoft.HardMediumSoftScore;
import org.optaplanner.core.api.score.buildin.hardmediumsoftlong.HardMediumSoftLongScore;
import org.optaplanner.core.api.score.buildin.hardsoft.HardSoftScore;
import org.optaplanner.core.api.score.buildin.hardsoftbigdecimal.HardSoftBigDecimalScore;
import org.optaplanner.core.api.score.buildin.hardsoftdouble.HardSoftDoubleScore;
import org.optaplanner.core.api.score.buildin.hardsoftlong.HardSoftLongScore;
import org.optaplanner.core.api.score.buildin.simple.SimpleScore;
import org.optaplanner.core.api.score.buildin.simplebigdecimal.SimpleBigDecimalScore;
import org.optaplanner.core.api.score.buildin.simpledouble.SimpleDoubleScore;
import org.optaplanner.core.api.score.buildin.simplelong.SimpleLongScore;
import org.optaplanner.core.impl.score.definition.ScoreDefinition;
public class ScoreUtils {
/**
* @param scoreClass never null, should be of the same {@link ClassLoader} as this class.
* @param scoreString never null
* @return never null
* @throws IllegalArgumentException if the scoreClass is a custom {@link Score}
* @see ScoreDefinition#parseScore(String)
*/
public static Score parseScore(Class<? extends Score> scoreClass, String scoreString) {
if (SimpleScore.class.equals(scoreClass)) {
return SimpleScore.parseScore(scoreString);
} else if (SimpleLongScore.class.equals(scoreClass)) {
return SimpleLongScore.parseScore(scoreString);
} else if (SimpleDoubleScore.class.equals(scoreClass)) {
return SimpleDoubleScore.parseScore(scoreString);
} else if (SimpleBigDecimalScore.class.equals(scoreClass)) {
return SimpleBigDecimalScore.parseScore(scoreString);
} else if (HardSoftScore.class.equals(scoreClass)) {
return HardSoftScore.parseScore(scoreString);
} else if (HardSoftLongScore.class.equals(scoreClass)) {
return HardSoftLongScore.parseScore(scoreString);
} else if (HardSoftDoubleScore.class.equals(scoreClass)) {
return HardSoftDoubleScore.parseScore(scoreString);
} else if (HardSoftBigDecimalScore.class.equals(scoreClass)) {
return HardSoftBigDecimalScore.parseScore(scoreString);
} else if (HardMediumSoftScore.class.equals(scoreClass)) {
return HardMediumSoftScore.parseScore(scoreString);
} else if (HardMediumSoftLongScore.class.equals(scoreClass)) {
return HardMediumSoftLongScore.parseScore(scoreString);
} else if (BendableScore.class.equals(scoreClass)) {
return BendableScore.parseScore(scoreString);
} else if (BendableLongScore.class.equals(scoreClass)) {
return BendableLongScore.parseScore(scoreString);
} else if (BendableBigDecimalScore.class.equals(scoreClass)) {
return BendableBigDecimalScore.parseScore(scoreString);
} else {
throw new IllegalArgumentException("Unrecognized scoreClass (" + scoreClass
+ ") for scoreString (" + scoreString + ").");
}
}
public static double[] extractLevelDoubles(Score score) {
Number[] levelNumbers = score.toLevelNumbers();
double[] levelDoubles = new double[levelNumbers.length];
for (int i = 0; i < levelNumbers.length; i++) {
levelDoubles[i] = levelNumbers[i].doubleValue();
}
return levelDoubles;
}
/**
*
* @param totalDiffNumbers never null
* @param scoreDiffNumbers never null
* @param timeGradientWeightNumbers never null
* @param levelDepth The number of levels of the diffNumbers that are included
* @return {@code 0.0 <= value <= 1.0}
*/
public static double calculateTimeGradient(Number[] totalDiffNumbers, Number[] scoreDiffNumbers,
double[] timeGradientWeightNumbers, int levelDepth) {
double timeGradient = 0.0;
double remainingTimeGradient = 1.0;
for (int i = 0; i < levelDepth; i++) {
double levelTimeGradientWeight;
if (i != (levelDepth - 1)) {
levelTimeGradientWeight = remainingTimeGradient * timeGradientWeightNumbers[i];
remainingTimeGradient -= levelTimeGradientWeight;
} else {
levelTimeGradientWeight = remainingTimeGradient;
remainingTimeGradient = 0.0;
}
double totalDiffLevel = totalDiffNumbers[i].doubleValue();
double scoreDiffLevel = scoreDiffNumbers[i].doubleValue();
if (scoreDiffLevel == totalDiffLevel) {
// Max out this level
timeGradient += levelTimeGradientWeight;
} else if (scoreDiffLevel > totalDiffLevel) {
// Max out this level and all softer levels too
timeGradient += levelTimeGradientWeight + remainingTimeGradient;
break;
} else if (scoreDiffLevel == 0.0) {
// Ignore this level
// timeGradient += 0.0
} else if (scoreDiffLevel < 0.0) {
// Ignore this level and all softer levels too
// timeGradient += 0.0
break;
} else {
double levelTimeGradient = (double) scoreDiffLevel / (double) totalDiffLevel;
timeGradient += levelTimeGradient * levelTimeGradientWeight;
}
}
if (timeGradient > 1.0) {
// Rounding error due to calculating with doubles
timeGradient = 1.0;
}
return timeGradient;
}
private ScoreUtils() {
}
}