/*
* Copyright 2012 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.score.director.incremental;
import org.drools.planner.core.score.Score;
import org.drools.planner.core.score.director.AbstractScoreDirector;
import org.drools.planner.core.score.director.ScoreDirector;
import org.drools.planner.core.solution.Solution;
/**
* Incremental java implementation of {@link ScoreDirector}, which only recalculates the {@link Score}
* of the part of the {@link Solution} workingSolution that changed,
* instead of the going through the entire {@link Solution}. This is incremental calculation, which is fast.
* @see ScoreDirector
*/
public class IncrementalScoreDirector extends AbstractScoreDirector<IncrementalScoreDirectorFactory> {
private final IncrementalScoreCalculator incrementalScoreCalculator;
public IncrementalScoreDirector(IncrementalScoreDirectorFactory scoreDirectorFactory,
IncrementalScoreCalculator incrementalScoreCalculator) {
super(scoreDirectorFactory);
this.incrementalScoreCalculator = incrementalScoreCalculator;
}
public void setWorkingSolution(Solution workingSolution) {
this.workingSolution = workingSolution;
incrementalScoreCalculator.resetWorkingSolution(workingSolution);
}
// ************************************************************************
// Complex methods
// ************************************************************************
public void beforeEntityAdded(Object entity) {
incrementalScoreCalculator.beforeEntityAdded(entity);
}
public void afterEntityAdded(Object entity) {
incrementalScoreCalculator.afterEntityAdded(entity);
}
public void beforeAllVariablesChanged(Object entity) {
incrementalScoreCalculator.beforeAllVariablesChanged(entity);
}
public void afterAllVariablesChanged(Object entity) {
incrementalScoreCalculator.afterAllVariablesChanged(entity);
}
public void beforeVariableChanged(Object entity, String variableName) {
incrementalScoreCalculator.beforeVariableChanged(entity, variableName);
}
public void afterVariableChanged(Object entity, String variableName) {
incrementalScoreCalculator.afterVariableChanged(entity, variableName);
}
public void beforeEntityRemoved(Object entity) {
incrementalScoreCalculator.beforeEntityRemoved(entity);
}
public void afterEntityRemoved(Object entity) {
incrementalScoreCalculator.afterEntityRemoved(entity);
}
public void beforeProblemFactAdded(Object problemFact) {
// Do nothing
}
public void afterProblemFactAdded(Object problemFact) {
incrementalScoreCalculator.resetWorkingSolution(workingSolution); // TODO do not nuke it
}
public void beforeProblemFactChanged(Object problemFact) {
// Do nothing
}
public void afterProblemFactChanged(Object problemFact) {
incrementalScoreCalculator.resetWorkingSolution(workingSolution); // TODO do not nuke it
}
public void beforeProblemFactRemoved(Object problemFact) {
// Do nothing
}
public void afterProblemFactRemoved(Object problemFact) {
incrementalScoreCalculator.resetWorkingSolution(workingSolution); // TODO do not nuke it
}
public Score calculateScore() {
Score score = incrementalScoreCalculator.calculateScore();
workingSolution.setScore(score);
calculateCount++;
return score;
}
public void dispose() {
// Do nothing
}
}