/*
* Copyright 2012 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.webexamples.vehiclerouting;
import java.awt.Dimension;
import java.awt.image.BufferedImage;
import java.io.IOException;
import javax.imageio.ImageIO;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;
import org.drools.planner.examples.vehiclerouting.domain.VrpSchedule;
import org.drools.planner.examples.vehiclerouting.swingui.VehicleRoutingSchedulePainter;
public class VrpShowScheduleServlet extends HttpServlet {
private VehicleRoutingSchedulePainter schedulePainter;
@Override
public void init() {
schedulePainter = new VehicleRoutingSchedulePainter();
}
@Override
protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws IOException {
HttpSession session = req.getSession();
VrpSchedule shownSolution = (VrpSchedule) session.getAttribute(VrpSessionAttributeName.SHOWN_SOLUTION);
Dimension size = new Dimension(800, 600);
BufferedImage image;
if (shownSolution == null) {
schedulePainter.createCanvas(size.width, size.height);
} else {
schedulePainter.reset(shownSolution, size, null);
}
image = schedulePainter.getCanvas();
resp.setContentType("image/png");
ImageIO.write(image, "png", resp.getOutputStream());
}
}