/*
* Copyright 2016 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.examples.cloudbalancing.optional.realtime;
import java.util.ArrayList;
import org.optaplanner.core.impl.score.director.ScoreDirector;
import org.optaplanner.core.impl.solver.ProblemFactChange;
import org.optaplanner.examples.cloudbalancing.domain.CloudBalance;
import org.optaplanner.examples.cloudbalancing.domain.CloudComputer;
public class AddComputerProblemFactChange implements ProblemFactChange<CloudBalance> {
private final CloudComputer computer;
public AddComputerProblemFactChange(CloudComputer computer) {
this.computer = computer;
}
@Override
public void doChange(ScoreDirector<CloudBalance> scoreDirector) {
CloudBalance cloudBalance = scoreDirector.getWorkingSolution();
// Set a unique id on the new computer
long nextComputerId = 0L;
for (CloudComputer otherComputer : cloudBalance.getComputerList()) {
if (nextComputerId <= otherComputer.getId()) {
nextComputerId = otherComputer.getId() + 1L;
}
}
computer.setId(nextComputerId);
// A SolutionCloner does not clone problem fact lists (such as computerList)
// Shallow clone the computerList so only workingSolution is affected, not bestSolution or guiSolution
cloudBalance.setComputerList(new ArrayList<>(cloudBalance.getComputerList()));
// Add the problem fact itself
scoreDirector.beforeProblemFactAdded(computer);
cloudBalance.getComputerList().add(computer);
scoreDirector.afterProblemFactAdded(computer);
}
}