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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 2011 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.tsp.swingui;

import java.awt.BorderLayout;
import javax.swing.JScrollPane;
import javax.swing.JTabbedPane;

import org.optaplanner.core.impl.heuristic.move.Move;
import org.optaplanner.core.impl.score.director.ScoreDirector;
import org.optaplanner.core.api.domain.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.tsp.domain.City;
import org.optaplanner.examples.tsp.domain.Standstill;
import org.optaplanner.examples.tsp.domain.TravelingSalesmanTour;
import org.optaplanner.examples.tsp.domain.Visit;

public class TspPanel extends SolutionPanel {

    public static final String LOGO_PATH = "/org/optaplanner/examples/tsp/swingui/tspLogo.png";

    private TspWorldPanel tspWorldPanel;
    private TspListPanel tspListPanel;

    private Long nextCityId = null;

    public TspPanel() {
        setLayout(new BorderLayout());
        JTabbedPane tabbedPane = new JTabbedPane();
        tspWorldPanel = new TspWorldPanel(this);
        tspWorldPanel.setPreferredSize(PREFERRED_SCROLLABLE_VIEWPORT_SIZE);
        tabbedPane.add("World", tspWorldPanel);
        tspListPanel = new TspListPanel(this);
        JScrollPane tspListScrollPane = new JScrollPane(tspListPanel);
        tabbedPane.add("List", tspListScrollPane);
        add(tabbedPane, BorderLayout.CENTER);
    }

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

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

    public TravelingSalesmanTour getTravelingSalesmanTour() {
        return (TravelingSalesmanTour) solutionBusiness.getSolution();
    }

    public void resetPanel(Solution solution) {
        TravelingSalesmanTour travelingSalesmanTour = (TravelingSalesmanTour) solution;
        tspWorldPanel.resetPanel(travelingSalesmanTour);
        tspListPanel.resetPanel(travelingSalesmanTour);
        resetNextCityId();
    }

    private void resetNextCityId() {
        long highestCityId = 0L;
        for (City city : getTravelingSalesmanTour().getCityList()) {
            if (highestCityId < city.getId().longValue()) {
                highestCityId = city.getId();
            }
        }
        nextCityId = highestCityId + 1L;
    }

    @Override
    public void updatePanel(Solution solution) {
        TravelingSalesmanTour travelingSalesmanTour = (TravelingSalesmanTour) solution;
        tspWorldPanel.updatePanel(travelingSalesmanTour);
        tspListPanel.updatePanel(travelingSalesmanTour);
    }

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

    public SolverAndPersistenceFrame getWorkflowFrame() {
        return solverAndPersistenceFrame;
    }

    public void insertCityAndVisit(double longitude, double latitude) {
        final City newCity = new City();
        newCity.setId(nextCityId);
        nextCityId++;
        newCity.setLongitude(longitude);
        newCity.setLatitude(latitude);
        logger.info("Scheduling insertion of newCity ({}).", newCity);
        solutionBusiness.doProblemFactChange(new ProblemFactChange() {
            public void doChange(ScoreDirector scoreDirector) {
                TravelingSalesmanTour solution = (TravelingSalesmanTour) scoreDirector.getWorkingSolution();
                scoreDirector.beforeProblemFactAdded(newCity);
                solution.getCityList().add(newCity);
                scoreDirector.afterProblemFactAdded(newCity);
                Visit newVisit = new Visit();
                newVisit.setId(newCity.getId());
                newVisit.setCity(newCity);
                scoreDirector.beforeEntityAdded(newVisit);
                solution.getVisitList().add(newVisit);
                scoreDirector.afterEntityAdded(newVisit);
            }
        });
        updatePanel(solutionBusiness.getSolution());
    }

    public void doMove(Visit visit, Standstill toStandstill) {
        solutionBusiness.doChangeMove(visit, "previousStandstill", toStandstill);
    }

}