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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 2010 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.projectjobscheduling.swingui;
import java.awt.BasicStroke;
import java.awt.BorderLayout;
import java.awt.Rectangle;
import java.util.LinkedHashMap;
import java.util.Map;
import org.jfree.chart.ChartPanel;
import org.jfree.chart.JFreeChart;
import org.jfree.chart.axis.NumberAxis;
import org.jfree.chart.plot.PlotOrientation;
import org.jfree.chart.plot.XYPlot;
import org.jfree.chart.renderer.xy.YIntervalRenderer;
import org.jfree.data.xy.YIntervalSeries;
import org.jfree.data.xy.YIntervalSeriesCollection;
import org.optaplanner.examples.common.swingui.SolutionPanel;
import org.optaplanner.examples.projectjobscheduling.domain.Allocation;
import org.optaplanner.examples.projectjobscheduling.domain.Project;
import org.optaplanner.examples.projectjobscheduling.domain.Schedule;
public class ProjectJobSchedulingPanel extends SolutionPanel {
public static final String LOGO_PATH =
"/org/optaplanner/examples/projectjobscheduling/swingui/projectJobSchedulingLogo.png";
public ProjectJobSchedulingPanel() {
setLayout(new BorderLayout());
}
@Override
public void resetPanel(Schedule schedule) {
removeAll();
ChartPanel chartPanel = new ChartPanel(createChart(schedule));
add(chartPanel, BorderLayout.CENTER);
}
private JFreeChart createChart(Schedule schedule) {
YIntervalSeriesCollection seriesCollection = new YIntervalSeriesCollection();
Map projectSeriesMap = new LinkedHashMap<>(
schedule.getProjectList().size());
YIntervalRenderer renderer = new YIntervalRenderer();
int maximumEndDate = 0;
int seriesIndex = 0;
for (Project project : schedule.getProjectList()) {
YIntervalSeries projectSeries = new YIntervalSeries(project.getLabel());
seriesCollection.addSeries(projectSeries);
projectSeriesMap.put(project, projectSeries);
renderer.setSeriesShape(seriesIndex, new Rectangle());
renderer.setSeriesStroke(seriesIndex, new BasicStroke(3.0f));
seriesIndex++;
}
for (Allocation allocation : schedule.getAllocationList()) {
int startDate = allocation.getStartDate();
int endDate = allocation.getEndDate();
YIntervalSeries projectSeries = projectSeriesMap.get(allocation.getProject());
projectSeries.add(allocation.getId(), (startDate + endDate) / 2.0,
startDate, endDate);
maximumEndDate = Math.max(maximumEndDate, endDate);
}
NumberAxis domainAxis = new NumberAxis("Job");
domainAxis.setStandardTickUnits(NumberAxis.createIntegerTickUnits());
domainAxis.setRange(-0.5, schedule.getAllocationList().size() - 0.5);
domainAxis.setInverted(true);
NumberAxis rangeAxis = new NumberAxis("Day (start to end date)");
rangeAxis.setRange(-0.5, maximumEndDate + 0.5);
XYPlot plot = new XYPlot(seriesCollection, domainAxis, rangeAxis, renderer);
plot.setOrientation(PlotOrientation.HORIZONTAL);
return new JFreeChart("Project Job Scheduling", JFreeChart.DEFAULT_TITLE_FONT,
plot, true);
}
}