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OptaPlanner solves planning problems. This lightweight, embeddable planning engine implements powerful and scalable algorithms to optimize business resource scheduling and planning. This module contains the examples which demonstrate how to use it in a normal Java application.

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/*
 * 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.swingui;

import java.awt.BorderLayout;
import java.util.Random;
import javax.swing.JTabbedPane;

import org.optaplanner.core.impl.move.Move;
import org.optaplanner.core.impl.score.director.ScoreDirector;
import org.optaplanner.core.impl.solution.Solution;
import org.optaplanner.core.impl.solver.ProblemFactChange;
import org.optaplanner.examples.common.swingui.SolutionPanel;
import org.optaplanner.examples.common.swingui.SolverAndPersistenceFrame;
import org.optaplanner.examples.vehiclerouting.domain.VrpCustomer;
import org.optaplanner.examples.vehiclerouting.domain.VrpLocation;
import org.optaplanner.examples.vehiclerouting.domain.VrpSchedule;
import org.optaplanner.examples.vehiclerouting.domain.timewindowed.VrpTimeWindowedCustomer;
import org.optaplanner.examples.vehiclerouting.domain.timewindowed.VrpTimeWindowedSchedule;

/**
 * TODO this code is highly unoptimized
 */
public class VehicleRoutingPanel extends SolutionPanel {

    public static final String LOGO_PATH = "/org/optaplanner/examples/vehiclerouting/swingui/vehicleRoutingLogo.png";

    private VehicleRoutingWorldPanel vehicleRoutingWorldPanel;

    private Random demandRandom = new Random(37);
    private Long nextLocationId = null;

    public VehicleRoutingPanel() {
        setLayout(new BorderLayout());
        JTabbedPane tabbedPane = new JTabbedPane();
        vehicleRoutingWorldPanel = new VehicleRoutingWorldPanel(this);
        vehicleRoutingWorldPanel.setPreferredSize(PREFERRED_SCROLLABLE_VIEWPORT_SIZE);
        tabbedPane.add("World", vehicleRoutingWorldPanel);
        add(tabbedPane, BorderLayout.CENTER);
    }

    @Override
    public boolean isWrapInScrollPane() {
        return false;
    }

    @Override
    public boolean isRefreshScreenDuringSolving() {
        return true;
    }

    public VrpSchedule getSchedule() {
        return (VrpSchedule) solutionBusiness.getSolution();
    }

    public void resetPanel(Solution solution) {
        VrpSchedule schedule = (VrpSchedule) solution;
        vehicleRoutingWorldPanel.resetPanel(schedule);
        resetNextLocationId();
    }

    private void resetNextLocationId() {
        long highestLocationId = 0L;
        for (VrpLocation location : getSchedule().getLocationList()) {
            if (highestLocationId < location.getId().longValue()) {
                highestLocationId = location.getId();
            }
        }
        nextLocationId = highestLocationId + 1L;
    }

    @Override
    public void updatePanel(Solution solution) {
        VrpSchedule schedule = (VrpSchedule) solution;
        vehicleRoutingWorldPanel.updatePanel(schedule);
    }

    public void doMove(Move move) {
        solutionBusiness.doMove(move);
    }

    public SolverAndPersistenceFrame getWorkflowFrame() {
        return solverAndPersistenceFrame;
    }

    public void insertLocationAndCustomer(double longitude, double latitude) {
        final VrpLocation newLocation = new VrpLocation();
        newLocation.setId(nextLocationId);
        nextLocationId++;
        newLocation.setLongitude(longitude);
        newLocation.setLatitude(latitude);
        logger.info("Scheduling insertion of newLocation ({}).", newLocation);
        solutionBusiness.doProblemFactChange(new ProblemFactChange() {
            public void doChange(ScoreDirector scoreDirector) {
                VrpSchedule schedule = (VrpSchedule) scoreDirector.getWorkingSolution();
                scoreDirector.beforeProblemFactAdded(newLocation);
                schedule.getLocationList().add(newLocation);
                scoreDirector.afterProblemFactAdded(newLocation);
                VrpCustomer newCustomer;
                if (schedule instanceof VrpTimeWindowedSchedule) {
                    VrpTimeWindowedCustomer newTimeWindowedCustomer = new VrpTimeWindowedCustomer();
                    newTimeWindowedCustomer.setReadyTime(10);
                    newTimeWindowedCustomer.setDueTime(100);
                    newTimeWindowedCustomer.setServiceDuration(10);
                    newCustomer = newTimeWindowedCustomer;
                } else {
                    newCustomer = new VrpCustomer();
                }
                newCustomer.setId(newLocation.getId());
                newCustomer.setLocation(newLocation);
                // Demand must not be 0
                newCustomer.setDemand(demandRandom.nextInt(10) + 1);
                scoreDirector.beforeEntityAdded(newCustomer);
                schedule.getCustomerList().add(newCustomer);
                scoreDirector.afterEntityAdded(newCustomer);
            }
        });
        updatePanel(solutionBusiness.getSolution());
    }

}