/**
* Copyright 2011 Marco Berri - marcoberri@gmail.com
*
* 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 it.marcoberri.mbmeteo.action.chart;
import it.marcoberri.mbmeteo.helper.ChartEnumMinMaxHelper;
import it.marcoberri.mbmeteo.model.Meteolog;
import it.marcoberri.mbmeteo.utils.Default;
import java.awt.Font;
import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.OutputStream;
import java.util.HashMap;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.jfree.chart.ChartFactory;
import org.jfree.chart.ChartUtilities;
import org.jfree.chart.JFreeChart;
import org.jfree.chart.plot.PiePlot;
import org.jfree.data.general.DefaultPieDataset;
/**
*
* @author Marco Berri <marcoberri@gmail.com>
*/
public class GetLastUPie extends Base {
/**
* Processes requests for both HTTP
* <code>GET</code> and
* <code>POST</code> methods.
*
* @param request servlet request
* @param response servlet response
* @throws ServletException if a servlet-specific error occurs
* @throws IOException if an I/O error occurs
*/
protected void processRequest(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
log.debug("start : " + this.getClass().getName());
final HashMap<String, String> params = getParams(request.getParameterMap());
final Integer dimy = Default.toInteger(params.get("dimy"), 600);
final Integer dimx = Default.toInteger(params.get("dimx"), 800);
Meteolog meteolog = ds.find(Meteolog.class).order("-time").limit(1).get();
final DefaultPieDataset dataset = new DefaultPieDataset();
dataset.setValue( ChartEnumMinMaxHelper.outdoorHumidityMin.getUm(), meteolog.getOutdoorHumidity());
dataset.setValue( "", 100-meteolog.getOutdoorHumidity());
JFreeChart chart = ChartFactory.createPieChart(
"Humidity %", // chart title
dataset, // data
true, // include legend
true,
false
);
PiePlot plot = (PiePlot) chart.getPlot();
plot.setLabelFont(new Font("SansSerif", Font.PLAIN, 12));
plot.setNoDataMessage("No data available");
plot.setCircular(false);
plot.setLabelGap(0.02);
final File f = File.createTempFile("mbmeteo", ".jpg");
ChartUtilities.saveChartAsJPEG(f, chart, dimx, dimy);
response.setContentType("image/jpeg");
response.setHeader("Content-Length", "" + f.length());
response.setHeader("Content-Disposition", "inline; filename=\"" + f.getName() + "\"");
final OutputStream out = response.getOutputStream();
final FileInputStream in = new FileInputStream(f.toString());
final int size = in.available();
final byte[] content = new byte[size];
in.read(content);
out.write(content);
in.close();
out.close();
}
// <editor-fold defaultstate="collapsed" desc="HttpServlet methods. Click on the + sign on the left to edit the code.">
/**
* Handles the HTTP
* <code>GET</code> method.
*
* @param request servlet request
* @param response servlet response
* @throws ServletException if a servlet-specific error occurs
* @throws IOException if an I/O error occurs
*/
@Override
protected void doGet(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
processRequest(request, response);
}
/**
* Handles the HTTP
* <code>POST</code> method.
*
* @param request servlet request
* @param response servlet response
* @throws ServletException if a servlet-specific error occurs
* @throws IOException if an I/O error occurs
*/
@Override
protected void doPost(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
processRequest(request, response);
}
}