Java tutorial
/* * 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 com.web.vehiclerouting.optaplanner.domain; import java.util.ArrayList; import java.util.Collection; import java.util.Iterator; import java.util.List; import com.thoughtworks.xstream.annotations.XStreamAlias; import com.thoughtworks.xstream.annotations.XStreamConverter; import com.thoughtworks.xstream.annotations.XStreamInclude; import org.apache.commons.lang.builder.HashCodeBuilder; import org.optaplanner.core.api.domain.solution.PlanningEntityCollectionProperty; import org.optaplanner.core.api.domain.solution.PlanningSolution; import org.optaplanner.core.api.domain.value.ValueRangeProvider; import org.optaplanner.core.api.score.buildin.hardsoft.HardSoftScore; import org.optaplanner.core.impl.score.buildin.hardsoft.HardSoftScoreDefinition; import org.optaplanner.core.impl.solution.Solution; import com.web.vehiclerouting.optaplanner.common.domain.AbstractPersistable; import com.web.vehiclerouting.optaplanner.domain.timewindowed.TimeWindowedVehicleRoutingSolution; import org.optaplanner.persistence.xstream.XStreamScoreConverter; @PlanningSolution @XStreamAlias("VrpVehicleRoutingSolution") @XStreamInclude({ TimeWindowedVehicleRoutingSolution.class }) public class VehicleRoutingSolution extends AbstractPersistable implements Solution<HardSoftScore> { protected String name; protected List<Location> locationList; protected List<Depot> depotList; protected List<Vehicle> vehicleList; protected List<Customer> customerList; @XStreamConverter(value = XStreamScoreConverter.class, types = { HardSoftScoreDefinition.class }) protected HardSoftScore score; public String getName() { return name; } public void setName(String name) { this.name = name; } public List<Location> getLocationList() { return locationList; } public void setLocationList(List<Location> locationList) { this.locationList = locationList; } public List<Depot> getDepotList() { return depotList; } public void setDepotList(List<Depot> depotList) { this.depotList = depotList; } @PlanningEntityCollectionProperty @ValueRangeProvider(id = "vehicleRange") public List<Vehicle> getVehicleList() { return vehicleList; } public void setVehicleList(List<Vehicle> vehicleList) { this.vehicleList = vehicleList; } @PlanningEntityCollectionProperty @ValueRangeProvider(id = "customerRange") public List<Customer> getCustomerList() { return customerList; } public void setCustomerList(List<Customer> customerList) { this.customerList = customerList; } public HardSoftScore getScore() { return score; } public void setScore(HardSoftScore score) { this.score = score; } // ************************************************************************ // Complex methods // ************************************************************************ public Collection<? extends Object> getProblemFacts() { List<Object> facts = new ArrayList<Object>(); facts.addAll(locationList); facts.addAll(depotList); // Do not add the planning entity's (customerList) because that will be done automatically return facts; } public boolean equals(Object o) { if (this == o) { return true; } if (id == null || !(o instanceof VehicleRoutingSolution)) { return false; } else { VehicleRoutingSolution other = (VehicleRoutingSolution) o; if (customerList.size() != other.customerList.size()) { return false; } for (Iterator<Customer> it = customerList.iterator(), otherIt = other.customerList.iterator(); it .hasNext();) { Customer customer = it.next(); Customer otherCustomer = otherIt.next(); // Notice: we don't use equals() if (!customer.solutionEquals(otherCustomer)) { return false; } } return true; } } public int hashCode() { HashCodeBuilder hashCodeBuilder = new HashCodeBuilder(); for (Customer customer : customerList) { // Notice: we don't use hashCode() hashCodeBuilder.append(customer.solutionHashCode()); } return hashCodeBuilder.toHashCode(); } }