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Drools Planner optimizes automated planning by combining metaheuristic search algorithms with rule
engine powered score calculation. This is the drools-planner-examples module which contains examples on how to use
Drools Planner.
/*
* 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.drools.planner.examples.cloudbalancing.swingui;
import java.awt.Color;
import java.awt.Component;
import java.awt.FlowLayout;
import java.awt.GridLayout;
import java.awt.event.ActionEvent;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import javax.swing.AbstractAction;
import javax.swing.BorderFactory;
import javax.swing.BoxLayout;
import javax.swing.JButton;
import javax.swing.JComboBox;
import javax.swing.JLabel;
import javax.swing.JOptionPane;
import javax.swing.JPanel;
import javax.swing.JTextArea;
import org.drools.planner.examples.cloudbalancing.domain.CloudAssignment;
import org.drools.planner.examples.cloudbalancing.domain.CloudBalance;
import org.drools.planner.examples.cloudbalancing.domain.CloudComputer;
import org.drools.planner.examples.cloudbalancing.domain.CloudProcess;
import org.drools.planner.examples.cloudbalancing.solver.move.CloudComputerChangeMove;
import org.drools.planner.examples.common.swingui.SolutionPanel;
import org.drools.planner.examples.nurserostering.domain.Assignment;
import org.drools.planner.examples.nurserostering.domain.Employee;
import org.drools.planner.examples.nurserostering.domain.ShiftDate;
import org.drools.planner.examples.nurserostering.solver.move.EmployeeChangeMove;
/**
* TODO this code is highly unoptimized
*/
public class CloudBalancingPanel extends SolutionPanel {
private static final Color HEADER_COLOR = Color.YELLOW;
private static final int TEXT_AREA_ROWS = 4;
private static final int TEXT_AREA_COLUMNS = 14;
public CloudBalancingPanel() {
setLayout(new GridLayout(0, 1));
}
private CloudBalance getCloudBalance() {
return (CloudBalance) solutionBusiness.getSolution();
}
public void resetPanel() {
removeAll();
CloudBalance cloudBalance = getCloudBalance();
add(createHeaderPanel());
List cloudComputerList = cloudBalance.getCloudComputerList();
Map computerToPanelMap
= new HashMap(cloudComputerList.size());
for (CloudComputer cloudComputer : cloudComputerList) {
CloudComputerPanel cloudComputerPanel = new CloudComputerPanel(cloudComputer);
computerToPanelMap.put(cloudComputer, cloudComputerPanel);
add(cloudComputerPanel);
}
if (cloudBalance.isInitialized()) {
for (CloudAssignment cloudAssignment : cloudBalance.getCloudAssignmentList()) {
CloudComputer cloudComputer = cloudAssignment.getCloudComputer();
CloudComputerPanel cloudComputerPanel = computerToPanelMap.get(cloudComputer);
cloudComputerPanel.addCloudAssignment(cloudAssignment);
}
}
}
private JPanel createHeaderPanel() {
JPanel headerPanel = new JPanel(new FlowLayout(FlowLayout.LEFT));
headerPanel.setBorder(BorderFactory.createCompoundBorder(
BorderFactory.createLineBorder(Color.LIGHT_GRAY),
BorderFactory.createEmptyBorder(2, 2, 2, 2)));
JTextArea cloudComputerLabel = new JTextArea("CloudComputer", TEXT_AREA_ROWS, TEXT_AREA_COLUMNS);
cloudComputerLabel.setBorder(BorderFactory.createCompoundBorder(
BorderFactory.createLineBorder(Color.DARK_GRAY),
BorderFactory.createEmptyBorder(2, 2, 2, 2)));
cloudComputerLabel.setBackground(HEADER_COLOR);
cloudComputerLabel.setEditable(false);
headerPanel.add(cloudComputerLabel);
JTextArea cloudProcessLabel = new JTextArea("CloudProcess", TEXT_AREA_ROWS, TEXT_AREA_COLUMNS);
cloudProcessLabel.setBorder(BorderFactory.createCompoundBorder(
BorderFactory.createLineBorder(Color.DARK_GRAY),
BorderFactory.createEmptyBorder(2, 2, 2, 2)));
cloudProcessLabel.setEditable(false);
headerPanel.add(cloudProcessLabel);
return headerPanel;
}
private class CloudComputerPanel extends JPanel {
private final CloudComputer cloudComputer;
public CloudComputerPanel(CloudComputer cloudComputer) {
setLayout(new FlowLayout(FlowLayout.LEFT));
this.cloudComputer = cloudComputer;
setBorder(BorderFactory.createCompoundBorder(
BorderFactory.createLineBorder(Color.DARK_GRAY),
BorderFactory.createEmptyBorder(2, 2, 2, 2)));
JTextArea cloudComputerLabel = new JTextArea(cloudComputer.getLabel(), TEXT_AREA_ROWS, TEXT_AREA_COLUMNS);
cloudComputerLabel.setBorder(BorderFactory.createCompoundBorder(
BorderFactory.createLineBorder(Color.DARK_GRAY),
BorderFactory.createEmptyBorder(2, 2, 2, 2)));
cloudComputerLabel.setBackground(HEADER_COLOR);
cloudComputerLabel.setEditable(false);
add(cloudComputerLabel);
}
public void addCloudAssignment(CloudAssignment cloudAssignment) {
JPanel cloudAssignmentPanel = new JPanel();
cloudAssignmentPanel.setLayout(new BoxLayout(cloudAssignmentPanel, BoxLayout.X_AXIS));
cloudAssignmentPanel.setBorder(BorderFactory.createCompoundBorder(
BorderFactory.createLineBorder(Color.DARK_GRAY),
BorderFactory.createEmptyBorder(2, 2, 2, 2)));
JTextArea cloudAssignmentLabel = new JTextArea(cloudAssignment.getLabel(), TEXT_AREA_ROWS, TEXT_AREA_COLUMNS);
cloudAssignmentLabel.setEditable(false);
cloudAssignmentPanel.add(cloudAssignmentLabel);
JButton button = new JButton(new CloudAssignmentAction(cloudAssignment));
cloudAssignmentPanel.add(button);
add(cloudAssignmentPanel);
}
}
private class CloudAssignmentAction extends AbstractAction {
private CloudAssignment cloudAssignment;
public CloudAssignmentAction(CloudAssignment cloudAssignment) {
super("=>");
this.cloudAssignment = cloudAssignment;
}
public void actionPerformed(ActionEvent e) {
List cloudComputerList = getCloudBalance().getCloudComputerList();
JComboBox cloudComputerListField = new JComboBox(cloudComputerList.toArray());
cloudComputerListField.setSelectedItem(cloudAssignment.getCloudComputer());
int result = JOptionPane.showConfirmDialog(CloudBalancingPanel.this.getRootPane(), cloudComputerListField,
"Select cloud computer", JOptionPane.OK_CANCEL_OPTION);
if (result == JOptionPane.OK_OPTION) {
CloudComputer toCloudComputer = (CloudComputer) cloudComputerListField.getSelectedItem();
solutionBusiness.doMove(new CloudComputerChangeMove(cloudAssignment, toCloudComputer));
workflowFrame.updateScreen();
}
}
}
}