/*
* 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.examples.cloudbalancing.solver.move;
import java.util.Arrays;
import java.util.Collection;
import org.apache.commons.lang.ObjectUtils;
import org.apache.commons.lang.builder.EqualsBuilder;
import org.apache.commons.lang.builder.HashCodeBuilder;
import org.drools.WorkingMemory;
import org.drools.planner.core.localsearch.decider.acceptor.tabu.TabuPropertyEnabled;
import org.drools.planner.core.move.Move;
import org.drools.planner.examples.cloudbalancing.domain.CloudAssignment;
import org.drools.planner.examples.cloudbalancing.domain.CloudComputer;
import org.drools.planner.examples.nurserostering.domain.Assignment;
import org.drools.planner.examples.nurserostering.domain.Employee;
import org.drools.planner.examples.nurserostering.solver.move.NurseRosteringMoveHelper;
public class CloudAssignmentSwitchMove implements Move, TabuPropertyEnabled {
private CloudAssignment leftCloudAssignment;
private CloudAssignment rightCloudAssignment;
public CloudAssignmentSwitchMove(CloudAssignment leftCloudAssignment, CloudAssignment rightCloudAssignment) {
this.leftCloudAssignment = leftCloudAssignment;
this.rightCloudAssignment = rightCloudAssignment;
}
public boolean isMoveDoable(WorkingMemory workingMemory) {
return !ObjectUtils.equals(leftCloudAssignment.getCloudComputer(), rightCloudAssignment.getCloudComputer());
}
public Move createUndoMove(WorkingMemory workingMemory) {
return new CloudAssignmentSwitchMove(rightCloudAssignment, leftCloudAssignment);
}
public void doMove(WorkingMemory workingMemory) {
CloudComputer oldLeftCloudComputer = leftCloudAssignment.getCloudComputer();
CloudComputer oldRightCloudComputer = rightCloudAssignment.getCloudComputer();
CloudBalancingMoveHelper.moveCloudComputer(workingMemory, leftCloudAssignment, oldRightCloudComputer);
CloudBalancingMoveHelper.moveCloudComputer(workingMemory, rightCloudAssignment, oldLeftCloudComputer);
}
public Collection<? extends Object> getTabuProperties() {
return Arrays.<CloudAssignment>asList(leftCloudAssignment, rightCloudAssignment);
}
public boolean equals(Object o) {
if (this == o) {
return true;
} else if (o instanceof CloudAssignmentSwitchMove) {
CloudAssignmentSwitchMove other = (CloudAssignmentSwitchMove) o;
return new EqualsBuilder()
.append(leftCloudAssignment, other.leftCloudAssignment)
.append(rightCloudAssignment, other.rightCloudAssignment)
.isEquals();
} else {
return false;
}
}
public int hashCode() {
return new HashCodeBuilder()
.append(leftCloudAssignment)
.append(rightCloudAssignment)
.toHashCode();
}
public String toString() {
return leftCloudAssignment + " <=> " + rightCloudAssignment;
}
}