/*
* 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.optaplanner.examples.vehiclerouting.domain.solver;
import java.io.Serializable;
import java.util.Comparator;
import org.apache.commons.lang.builder.CompareToBuilder;
import org.optaplanner.examples.vehiclerouting.domain.Customer;
/**
* On large datasets, the constructed solution looks like a zebra crossing.
*/
public class LatitudeCustomerDifficultyComparator implements Comparator<Customer>, Serializable {
public int compare(Customer a, Customer b) {
return new CompareToBuilder()
.append(a.getLocation().getLatitude(), b.getLocation().getLatitude())
.append(a.getLocation().getLongitude(), b.getLocation().getLongitude())
.append(a.getDemand(), b.getDemand())
.append(a.getId(), b.getId())
.toComparison();
}
}