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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.
/*
* 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.machinereassignment.swingui;
import java.awt.GridLayout;
import java.awt.event.ActionEvent;
import java.util.ArrayList;
import java.util.Collections;
import java.util.Iterator;
import java.util.LinkedHashMap;
import java.util.LinkedHashSet;
import java.util.List;
import java.util.Map;
import java.util.Set;
import javax.swing.AbstractAction;
import javax.swing.GroupLayout;
import javax.swing.JComboBox;
import javax.swing.JLabel;
import javax.swing.JOptionPane;
import javax.swing.JPanel;
import org.apache.commons.lang.ObjectUtils;
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.machinereassignment.domain.MachineReassignment;
import org.optaplanner.examples.machinereassignment.domain.MrMachine;
import org.optaplanner.examples.machinereassignment.domain.MrProcessAssignment;
import org.optaplanner.examples.machinereassignment.domain.MrResource;
public class MachineReassignmentPanel extends SolutionPanel {
public static final String LOGO_PATH
= "/org/optaplanner/examples/machinereassignment/swingui/machineReassignmentLogo.png";
private JPanel machineListPanel;
private MrMachinePanel unassignedPanel;
private JLabel tooBigLabel = null;
private Map machineToPanelMap;
public MachineReassignmentPanel() {
GroupLayout layout = new GroupLayout(this);
setLayout(layout);
createMachineListPanel();
JPanel headerPanel = new JPanel();
layout.setHorizontalGroup(layout.createParallelGroup()
.addComponent(headerPanel).addComponent(machineListPanel));
layout.setVerticalGroup(layout.createSequentialGroup()
.addComponent(headerPanel, GroupLayout.PREFERRED_SIZE, GroupLayout.PREFERRED_SIZE,
GroupLayout.PREFERRED_SIZE)
.addComponent(machineListPanel, GroupLayout.PREFERRED_SIZE, GroupLayout.PREFERRED_SIZE,
GroupLayout.PREFERRED_SIZE));
}
private void createMachineListPanel() {
machineListPanel = new JPanel(new GridLayout(0, 1));
unassignedPanel = new MrMachinePanel(this, Collections.emptyList(), null);
machineListPanel.add(unassignedPanel);
machineToPanelMap = new LinkedHashMap();
machineToPanelMap.put(null, unassignedPanel);
}
private MachineReassignment getMachineReassignment() {
return (MachineReassignment) solutionBusiness.getSolution();
}
public void resetPanel(Solution solution) {
for (MrMachinePanel machinePanel : machineToPanelMap.values()) {
if (machinePanel.getMachine() != null) {
machineListPanel.remove(machinePanel);
}
}
machineToPanelMap.clear();
machineToPanelMap.put(null, unassignedPanel);
unassignedPanel.clearProcessAssignments();
updatePanel(solution);
}
@Override
public void updatePanel(Solution solution) {
MachineReassignment machineReassignment = (MachineReassignment) solution;
List resourceList = machineReassignment.getResourceList();
unassignedPanel.setResourceList(resourceList);
if (machineReassignment.getMachineList().size() > 1000) {
if (tooBigLabel == null) {
tooBigLabel = new JLabel("The dataset is too big to show.");
machineListPanel.add(tooBigLabel);
}
} else {
if (tooBigLabel != null) {
machineListPanel.remove(tooBigLabel);
tooBigLabel = null;
}
Set deadMachineSet = new LinkedHashSet(machineToPanelMap.keySet());
deadMachineSet.remove(null);
for (MrMachine machine : machineReassignment.getMachineList()) {
deadMachineSet.remove(machine);
MrMachinePanel machinePanel = machineToPanelMap.get(machine);
if (machinePanel == null) {
machinePanel = new MrMachinePanel(this, resourceList, machine);
machineListPanel.add(machinePanel);
machineToPanelMap.put(machine, machinePanel);
}
machinePanel.clearProcessAssignments();
}
unassignedPanel.clearProcessAssignments();
for (MrProcessAssignment processAssignment : machineReassignment.getProcessAssignmentList()) {
MrMachine machine = processAssignment.getMachine();
MrMachinePanel machinePanel = machineToPanelMap.get(machine);
machinePanel.addProcessAssignment(processAssignment);
}
for (MrMachine deadMachine : deadMachineSet) {
MrMachinePanel deadMachinePanel = machineToPanelMap.remove(deadMachine);
machineListPanel.remove(deadMachinePanel);
}
for (MrMachinePanel machinePanel : machineToPanelMap.values()) {
machinePanel.update();
}
}
}
public void deleteMachine(final MrMachine machine) {
logger.info("Scheduling delete of machine ({}).", machine);
solutionBusiness.doProblemFactChange(new ProblemFactChange() {
public void doChange(ScoreDirector scoreDirector) {
MachineReassignment machineReassignment = (MachineReassignment) scoreDirector.getWorkingSolution();
// First remove the planning fact from all planning entities that use it
for (MrProcessAssignment processAssignment : machineReassignment.getProcessAssignmentList()) {
if (ObjectUtils.equals(processAssignment.getMachine(), machine)) {
// TODO HACK we are removing it because it becomes uninitialized,
// which means it has to be retracted
// This is nonsense from a ProblemFactChange point of view, FIXME!
scoreDirector.beforeEntityRemoved(processAssignment);
processAssignment.setMachine(null);
scoreDirector.afterEntityRemoved(processAssignment);
}
}
// A SolutionCloner does not clone problem fact lists (such as machineList)
// Shallow clone the machineList so only workingSolution is affected, not bestSolution or guiSolution
machineReassignment.setMachineList(new ArrayList(machineReassignment.getMachineList()));
// Next remove it the planning fact itself
for (Iterator it = machineReassignment.getMachineList().iterator(); it.hasNext(); ) {
MrMachine workingMachine = it.next();
if (ObjectUtils.equals(workingMachine, machine)) {
scoreDirector.beforeProblemFactRemoved(workingMachine);
it.remove(); // remove from list
scoreDirector.beforeProblemFactRemoved(workingMachine);
break;
}
}
}
});
updatePanel(solutionBusiness.getSolution());
}
private class MrProcessAssignmentAction extends AbstractAction {
private MrProcessAssignment processAssignment;
public MrProcessAssignmentAction(MrProcessAssignment processAssignment) {
super("=>");
this.processAssignment = processAssignment;
}
public void actionPerformed(ActionEvent e) {
List machineList = getMachineReassignment().getMachineList();
JComboBox machineListField = new JComboBox(machineList.toArray());
machineListField.setSelectedItem(processAssignment.getMachine());
int result = JOptionPane.showConfirmDialog(MachineReassignmentPanel.this.getRootPane(), machineListField,
"Select machine", JOptionPane.OK_CANCEL_OPTION);
if (result == JOptionPane.OK_OPTION) {
MrMachine toMrMachine = (MrMachine) machineListField.getSelectedItem();
solutionBusiness.doChangeMove(processAssignment, "machine", toMrMachine);
solverAndPersistenceFrame.resetScreen();
}
}
}
}