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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 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.vehiclerouting.swingui;

import java.awt.BorderLayout;
import java.util.Random;

import javax.swing.JTabbedPane;

import org.optaplanner.core.impl.solver.random.RandomUtils;
import org.optaplanner.examples.common.swingui.SolutionPanel;
import org.optaplanner.examples.common.swingui.SolverAndPersistenceFrame;
import org.optaplanner.examples.vehiclerouting.domain.Customer;
import org.optaplanner.examples.vehiclerouting.domain.VehicleRoutingSolution;
import org.optaplanner.examples.vehiclerouting.domain.location.AirLocation;
import org.optaplanner.examples.vehiclerouting.domain.location.Location;
import org.optaplanner.examples.vehiclerouting.domain.timewindowed.TimeWindowedCustomer;
import org.optaplanner.examples.vehiclerouting.domain.timewindowed.TimeWindowedDepot;
import org.optaplanner.examples.vehiclerouting.domain.timewindowed.TimeWindowedVehicleRoutingSolution;

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 void resetPanel(VehicleRoutingSolution solution) {
        vehicleRoutingWorldPanel.resetPanel(solution);
        resetNextLocationId();
    }

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

    @Override
    public void updatePanel(VehicleRoutingSolution solution) {
        vehicleRoutingWorldPanel.updatePanel(solution);
    }

    public SolverAndPersistenceFrame getWorkflowFrame() {
        return solverAndPersistenceFrame;
    }

    public void insertLocationAndCustomer(double longitude, double latitude) {
        final Location newLocation;
        switch (getSolution().getDistanceType()) {
            case AIR_DISTANCE:
                newLocation = new AirLocation();
                break;
            case ROAD_DISTANCE:
                logger.warn("Adding locations for a road distance dataset is not supported.");
                return;
            case SEGMENTED_ROAD_DISTANCE:
                logger.warn("Adding locations for a segmented road distance dataset is not supported.");
                return;
            default:
                throw new IllegalStateException("The distanceType (" + getSolution().getDistanceType()
                        + ") is not implemented.");
        }
        newLocation.setId(nextLocationId);
        nextLocationId++;
        newLocation.setLongitude(longitude);
        newLocation.setLatitude(latitude);
        logger.info("Scheduling insertion of newLocation ({}).", newLocation);
        doProblemFactChange(scoreDirector -> {
            VehicleRoutingSolution solution = scoreDirector.getWorkingSolution();
            scoreDirector.beforeProblemFactAdded(newLocation);
            solution.getLocationList().add(newLocation);
            scoreDirector.afterProblemFactAdded(newLocation);
            Customer newCustomer = createCustomer(solution, newLocation);
            scoreDirector.beforeEntityAdded(newCustomer);
            solution.getCustomerList().add(newCustomer);
            scoreDirector.afterEntityAdded(newCustomer);
            scoreDirector.triggerVariableListeners();
        });
    }

    protected Customer createCustomer(VehicleRoutingSolution solution, Location newLocation) {
        Customer newCustomer;
        if (solution instanceof TimeWindowedVehicleRoutingSolution) {
            TimeWindowedCustomer newTimeWindowedCustomer = new TimeWindowedCustomer();
            TimeWindowedDepot timeWindowedDepot = (TimeWindowedDepot) solution.getDepotList().get(0);
            long windowTime = (timeWindowedDepot.getDueTime() - timeWindowedDepot.getReadyTime()) / 4L;
            long readyTime = RandomUtils.nextLong(demandRandom, windowTime * 3L);
            newTimeWindowedCustomer.setReadyTime(readyTime);
            newTimeWindowedCustomer.setDueTime(readyTime + windowTime);
            newTimeWindowedCustomer.setServiceDuration(Math.min(10000L, windowTime / 2L));
            newCustomer = newTimeWindowedCustomer;
        } else {
            newCustomer = new Customer();
        }
        newCustomer.setId(newLocation.getId());
        newCustomer.setLocation(newLocation);
        // Demand must not be 0
        newCustomer.setDemand(demandRandom.nextInt(10) + 1);
        return newCustomer;
    }

}