presentation.webgui.vitroappservlet.VisualStyles.java Source code

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Here is the source code for presentation.webgui.vitroappservlet.VisualStyles.java

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/*
 * #--------------------------------------------------------------------------
 * # Copyright (c) 2013 VITRO FP7 Consortium.
 * # All rights reserved. This program and the accompanying materials
 * # are made available under the terms of the GNU Lesser Public License v3.0 which accompanies this distribution, and is available at
 * # http://www.gnu.org/licenses/lgpl-3.0.html
 * #
 * # Contributors:
 * #     Antoniou Thanasis (Research Academic Computer Technology Institute)
 * #     Paolo Medagliani (Thales Communications & Security)
 * #     D. Davide Lamanna (WLAB SRL)
 * #     Alessandro Leoni (WLAB SRL)
 * #     Francesco Ficarola (WLAB SRL)
 * #     Stefano Puglia (WLAB SRL)
 * #     Panos Trakadas (Technological Educational Institute of Chalkida)
 * #     Panagiotis Karkazis (Technological Educational Institute of Chalkida)
 * #     Andrea Kropp (Selex ES)
 * #     Kiriakos Georgouleas (Hellenic Aerospace Industry)
 * #     David Ferrer Figueroa (Telefonica Investigacin y Desarrollo S.A.)
 * #
 * #--------------------------------------------------------------------------
 */
/*
 * VisualStyles.java
 *
 */

package presentation.webgui.vitroappservlet;

import presentation.webgui.vitroappservlet.Model3dservice.Model3dStylesEntry;
import presentation.webgui.vitroappservlet.Model3dservice.Model3dStylesList;
import org.jfree.chart.ChartUtilities;
import org.jfree.chart.JFreeChart;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;
import java.io.IOException;
import java.io.OutputStream;
import java.io.PrintWriter;

/**
 *
 * @author antoniou
 */
public class VisualStyles extends HttpServlet {
    String uStyleId;

    /** Creates a new instance of VisualResultsModel */

    protected void doGet(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        doPost(request, response);
    }

    protected void doPost(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        HttpSession session = request.getSession();
        this.uStyleId = request.getParameter("suid");
        Model3dStylesList myStylesIndex = Model3dStylesList.getModel3dStylesList();
        Model3dStylesEntry currStyleEntry = myStylesIndex.getStyleWithId(this.uStyleId);
        if (currStyleEntry != null) {
            response.setContentType("image/png");
            OutputStream out = response.getOutputStream();
            try {
                JFreeChart chart = StyleCreator.createDatasetAndChart(currStyleEntry);

                int chartHeight = 40;
                if (chart.getCategoryPlot().getDataset().getColumnKeys().size() > 1) {
                    chartHeight = chart.getCategoryPlot().getDataset().getColumnKeys().size() * 22;
                }
                ChartUtilities.writeChartAsPNG(out, chart, 300, chartHeight);
            } catch (Exception e) {
                System.err.println(e.toString());
                response.setContentType("text/html");
                PrintWriter outPrintWriter = response.getWriter();
                outPrintWriter.print("<b>Error</b>:" + e.toString());
                outPrintWriter.flush();
                outPrintWriter.close();
            } finally {
                out.close();
            }
            return;
        } else {
            response.setContentType("text/html");
            PrintWriter outPrintWriter = response.getWriter();
            outPrintWriter.print("<b>No style defined</b>");
            outPrintWriter.flush();
            outPrintWriter.close();
        }
    }

}