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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 2016 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.taskassigning.swingui;
import static org.optaplanner.examples.taskassigning.persistence.TaskAssigningGenerator.BASE_DURATION_AVERAGE;
import java.awt.BorderLayout;
import java.awt.FlowLayout;
import java.awt.GridLayout;
import java.awt.event.ActionEvent;
import java.util.List;
import java.util.Random;
import javax.swing.AbstractAction;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JSpinner;
import javax.swing.JToggleButton;
import javax.swing.SpinnerNumberModel;
import javax.swing.Timer;
import org.optaplanner.examples.common.swingui.SolutionPanel;
import org.optaplanner.examples.taskassigning.domain.Customer;
import org.optaplanner.examples.taskassigning.domain.Priority;
import org.optaplanner.examples.taskassigning.domain.Task;
import org.optaplanner.examples.taskassigning.domain.TaskAssigningSolution;
import org.optaplanner.examples.taskassigning.domain.TaskType;
public class TaskAssigningPanel extends SolutionPanel {
public static final String LOGO_PATH = "/org/optaplanner/examples/taskassigning/swingui/taskAssigningLogo.png";
private final TaskOverviewPanel taskOverviewPanel;
private JSpinner consumeRateField;
private AbstractAction consumeAction;
private Timer consumeTimer;
private JSpinner produceRateField;
private AbstractAction produceAction;
private Timer produceTimer;
private int consumedTimeInSeconds = 0;
private int previousConsumedTime = 0; // In minutes
private int producedTimeInSeconds = 0;
private int previousProducedTime = 0; // In minutes
private volatile Random producingRandom;
public TaskAssigningPanel() {
setLayout(new BorderLayout());
JPanel headerPanel = createHeaderPanel();
add(headerPanel, BorderLayout.NORTH);
taskOverviewPanel = new TaskOverviewPanel(this);
add(new JScrollPane(taskOverviewPanel), BorderLayout.CENTER);
}
private JPanel createHeaderPanel() {
JPanel headerPanel = new JPanel(new GridLayout(1, 0));
JPanel consumePanel = new JPanel(new FlowLayout(FlowLayout.LEFT));
consumePanel.add(new JLabel("Consume rate:"));
consumeRateField = new JSpinner(new SpinnerNumberModel(600, 10, 3600, 10));
consumePanel.add(consumeRateField);
consumeTimer = new Timer(1000, e -> {
consumedTimeInSeconds += (Integer) consumeRateField.getValue();
consumeUpTo(consumedTimeInSeconds / 60);
repaint();
});
consumeAction = new AbstractAction("Consume") {
@Override
public void actionPerformed(ActionEvent e) {
if (!consumeTimer.isRunning()) {
consumeRateField.setEnabled(false);
consumeTimer.start();
} else {
consumeRateField.setEnabled(true);
consumeTimer.stop();
}
}
};
consumePanel.add(new JToggleButton(consumeAction));
headerPanel.add(consumePanel);
JPanel producePanel = new JPanel(new FlowLayout(FlowLayout.LEFT));
producePanel.add(new JLabel("Produce rate:"));
produceRateField = new JSpinner(new SpinnerNumberModel(600, 10, 3600, 10));
producePanel.add(produceRateField);
produceTimer = new Timer(1000, e -> {
producedTimeInSeconds += (Integer) produceRateField.getValue();
produceUpTo(producedTimeInSeconds / 60);
repaint();
});
produceAction = new AbstractAction("Produce") {
@Override
public void actionPerformed(ActionEvent e) {
if (!produceTimer.isRunning()) {
produceRateField.setEnabled(false);
produceTimer.start();
} else {
produceRateField.setEnabled(true);
produceTimer.stop();
}
}
};
producePanel.add(new JToggleButton(produceAction));
headerPanel.add(producePanel);
return headerPanel;
}
/**
* @param consumedTime in minutes, just like {@link Task#getStartTime()}
*/
public void consumeUpTo(final int consumedTime) {
taskOverviewPanel.setConsumedDuration(consumedTime);
if (consumedTime <= previousConsumedTime) {
// Occurs due to rounding down of consumedTimeInSeconds
return;
}
logger.debug("Scheduling consumption of all tasks up to {} minutes.", consumedTime);
previousConsumedTime = consumedTime;
doProblemFactChange(scoreDirector -> {
TaskAssigningSolution solution = scoreDirector.getWorkingSolution();
solution.setFrozenCutoff(consumedTime);
for (Task task : solution.getTaskList()) {
if (!task.isPinned()) {
if (task.getStartTime() != null && task.getStartTime() < consumedTime) {
scoreDirector.beforeProblemPropertyChanged(task);
task.setPinned(true);
scoreDirector.afterProblemPropertyChanged(task);
logger.trace("Consumed task ({}).", task);
} else if (task.getReadyTime() < consumedTime) {
// Prevent a non-pinned task from being assigned retroactively
scoreDirector.beforeProblemPropertyChanged(task);
task.setReadyTime(consumedTime);
scoreDirector.afterProblemPropertyChanged(task);
}
}
}
scoreDirector.triggerVariableListeners();
});
}
/**
* @param producedTime in minutes, just like {@link Task#getStartTime()}
*/
public void produceUpTo(final int producedTime) {
if (producedTime <= previousProducedTime) {
// Occurs due to rounding down of producedDurationInSeconds
return;
}
final int baseDurationBudgetPerEmployee = (producedTime - previousProducedTime);
final int newTaskCount = getSolution().getEmployeeList().size() * baseDurationBudgetPerEmployee / BASE_DURATION_AVERAGE;
if (newTaskCount <= 0) {
// Do not change previousProducedDuration
return;
}
logger.debug("Scheduling production of {} new tasks.", newTaskCount);
previousProducedTime = producedTime;
final int readyTime = previousConsumedTime;
doProblemFactChange(scoreDirector -> {
TaskAssigningSolution solution = scoreDirector.getWorkingSolution();
List taskTypeList = solution.getTaskTypeList();
List customerList = solution.getCustomerList();
Priority[] priorities = Priority.values();
List taskList = solution.getTaskList();
for (int i = 0; i < newTaskCount; i++) {
Task task = new Task();
TaskType taskType = taskTypeList.get(producingRandom.nextInt(taskTypeList.size()));
long nextTaskId = 0L;
int nextIndexInTaskType = 0;
for (Task other : taskList) {
if (nextTaskId <= other.getId()) {
nextTaskId = other.getId() + 1L;
}
if (taskType == other.getTaskType()) {
if (nextIndexInTaskType <= other.getIndexInTaskType()) {
nextIndexInTaskType = other.getIndexInTaskType() + 1;
}
}
}
task.setId(nextTaskId);
task.setTaskType(taskType);
task.setIndexInTaskType(nextIndexInTaskType);
task.setCustomer(customerList.get(producingRandom.nextInt(customerList.size())));
// Prevent the new task from being assigned retroactively
task.setReadyTime(readyTime);
task.setPriority(priorities[producingRandom.nextInt(priorities.length)]);
scoreDirector.beforeEntityAdded(task);
taskList.add(task);
scoreDirector.afterEntityAdded(task);
}
scoreDirector.triggerVariableListeners();
});
}
@Override
public boolean isWrapInScrollPane() {
return false;
}
@Override
public void resetPanel(TaskAssigningSolution solution) {
consumedTimeInSeconds = solution.getFrozenCutoff() * 60;
previousConsumedTime = solution.getFrozenCutoff();
producedTimeInSeconds = 0;
previousProducedTime = 0;
producingRandom = new Random(0); // Random is thread safe
taskOverviewPanel.resetPanel(solution);
taskOverviewPanel.setConsumedDuration(consumedTimeInSeconds / 60);
}
@Override
public void updatePanel(TaskAssigningSolution taskAssigningSolution) {
taskOverviewPanel.resetPanel(taskAssigningSolution);
}
}