/*
* 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.move;
import java.util.Arrays;
import java.util.Collection;
import java.util.Objects;
import org.apache.commons.lang3.builder.EqualsBuilder;
import org.apache.commons.lang3.builder.HashCodeBuilder;
import org.optaplanner.core.impl.heuristic.move.AbstractMove;
import org.optaplanner.core.impl.score.director.ScoreDirector;
import org.optaplanner.examples.cloudbalancing.domain.CloudBalance;
import org.optaplanner.examples.cloudbalancing.domain.CloudComputer;
import org.optaplanner.examples.cloudbalancing.domain.CloudProcess;
public class CloudProcessSwapMove extends AbstractMove<CloudBalance> {
private CloudProcess leftCloudProcess;
private CloudProcess rightCloudProcess;
public CloudProcessSwapMove(CloudProcess leftCloudProcess, CloudProcess rightCloudProcess) {
this.leftCloudProcess = leftCloudProcess;
this.rightCloudProcess = rightCloudProcess;
}
@Override
public boolean isMoveDoable(ScoreDirector<CloudBalance> scoreDirector) {
return !Objects.equals(leftCloudProcess.getComputer(), rightCloudProcess.getComputer());
}
@Override
public CloudProcessSwapMove createUndoMove(ScoreDirector<CloudBalance> scoreDirector) {
return new CloudProcessSwapMove(rightCloudProcess, leftCloudProcess);
}
@Override
protected void doMoveOnGenuineVariables(ScoreDirector<CloudBalance> scoreDirector) {
CloudComputer oldLeftCloudComputer = leftCloudProcess.getComputer();
CloudComputer oldRightCloudComputer = rightCloudProcess.getComputer();
scoreDirector.beforeVariableChanged(leftCloudProcess, "computer");
leftCloudProcess.setComputer(oldRightCloudComputer);
scoreDirector.afterVariableChanged(leftCloudProcess, "computer");
scoreDirector.beforeVariableChanged(rightCloudProcess, "computer");
rightCloudProcess.setComputer(oldLeftCloudComputer);
scoreDirector.afterVariableChanged(rightCloudProcess, "computer");
}
@Override
public Collection<? extends Object> getPlanningEntities() {
return Arrays.asList(leftCloudProcess, rightCloudProcess);
}
@Override
public Collection<? extends Object> getPlanningValues() {
return Arrays.asList(leftCloudProcess.getComputer(), rightCloudProcess.getComputer());
}
@Override
public boolean equals(Object o) {
if (this == o) {
return true;
} else if (o instanceof CloudProcessSwapMove) {
CloudProcessSwapMove other = (CloudProcessSwapMove) o;
return new EqualsBuilder()
.append(leftCloudProcess, other.leftCloudProcess)
.append(rightCloudProcess, other.rightCloudProcess)
.isEquals();
} else {
return false;
}
}
@Override
public int hashCode() {
return new HashCodeBuilder()
.append(leftCloudProcess)
.append(rightCloudProcess)
.toHashCode();
}
@Override
public String toString() {
return leftCloudProcess + " {" + leftCloudProcess.getComputer() + "} <-> "
+ rightCloudProcess + " {" + rightCloudProcess.getComputer() + "}";
}
}