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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 2010 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.common.app;

import java.awt.Component;
import javax.swing.JFrame;
import javax.swing.UIManager;
import javax.swing.UnsupportedLookAndFeelException;

import org.optaplanner.core.api.solver.Solver;
import org.optaplanner.examples.common.business.SolutionBusiness;
import org.optaplanner.examples.common.persistence.AbstractSolutionExporter;
import org.optaplanner.examples.common.persistence.AbstractSolutionImporter;
import org.optaplanner.examples.common.persistence.SolutionDao;
import org.optaplanner.examples.common.swingui.SolutionPanel;
import org.optaplanner.examples.common.swingui.SolverAndPersistenceFrame;
import org.optaplanner.examples.nurserostering.swingui.NurseRosteringPanel;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

public abstract class CommonApp extends LoggingMain {

    protected static final Logger logger = LoggerFactory.getLogger(CommonApp.class);

    /**
     * Some examples are not compatible with every native LookAndFeel.
     * For example, {@link NurseRosteringPanel} is incompatible with Mac.
     */
    public static void fixateLookAndFeel() {
        String lookAndFeelName = "Metal"; // "Nimbus" is nicer but incompatible
        Exception lookAndFeelException;
        try {
            for (UIManager.LookAndFeelInfo info : UIManager.getInstalledLookAndFeels()) {
                if (lookAndFeelName.equals(info.getName())) {
                    UIManager.setLookAndFeel(info.getClassName());
                    return;
                }
            }
            lookAndFeelException = null;
        } catch (UnsupportedLookAndFeelException e) {
            lookAndFeelException = e;
        } catch (ClassNotFoundException e) {
            lookAndFeelException = e;
        } catch (InstantiationException e) {
            lookAndFeelException = e;
        } catch (IllegalAccessException e) {
            lookAndFeelException = e;
        }
        logger.warn("Could not switch to lookAndFeel (" + lookAndFeelName + "). Layout might be incorrect.",
                lookAndFeelException);
    }

    private SolverAndPersistenceFrame solverAndPersistenceFrame;
    private SolutionBusiness solutionBusiness;

    public CommonApp() {
        solutionBusiness = createSolutionBusiness();
        solverAndPersistenceFrame = new SolverAndPersistenceFrame(
                solutionBusiness, createSolutionPanel(), solutionBusiness.getDirName());
    }

    public void init() {
        init(null, true);
    }

    public void init(Component centerForComponent, boolean exitOnClose) {
        solverAndPersistenceFrame.setDefaultCloseOperation(exitOnClose ? JFrame.EXIT_ON_CLOSE : JFrame.DISPOSE_ON_CLOSE);
        solverAndPersistenceFrame.init(centerForComponent);
        solverAndPersistenceFrame.setVisible(true);
    }

    public SolutionBusiness createSolutionBusiness() {
        SolutionDao solutionDao = createSolutionDao();
        SolutionBusiness solutionBusiness = new SolutionBusiness();
        solutionBusiness.setSolutionDao(solutionDao);
        solutionBusiness.setImporter(createSolutionImporter());
        solutionBusiness.setExporter(createSolutionExporter());
        solutionBusiness.updateDataDirs();
        solutionBusiness.setSolver(createSolver());
        return solutionBusiness;
    }

    protected abstract Solver createSolver();

    protected abstract SolutionPanel createSolutionPanel();

    protected abstract SolutionDao createSolutionDao();

    protected AbstractSolutionImporter createSolutionImporter() {
        return null;
    }

    protected AbstractSolutionExporter createSolutionExporter() {
        return null;
    }

}