/***********************************************************************************************
* File Info: $Id: PieChart2DServlet.java,v 1.1 2003/08/28 01:17:36 nathaniel_auvil Exp $
* Copyright (C) 2000
* Author: Nathaniel G. Auvil
* Contributor(s):
*
* Copyright 2002 (C) Nathaniel G. Auvil. All Rights Reserved.
*
* Redistribution and use of this software and associated documentation ("Software"), with or
* without modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain copyright statements and notices.
* Redistributions must also contain a copy of this document.
*
* 2. Redistributions in binary form must reproduce the above copyright notice, this list of
* conditions and the following disclaimer in the documentation and/or other materials
* provided with the distribution.
*
* 3. The name "jCharts" or "Nathaniel G. Auvil" must not be used to endorse or promote
* products derived from this Software without prior written permission of Nathaniel G.
* Auvil. For written permission, please contact nathaniel_auvil@users.sourceforge.net
*
* 4. Products derived from this Software may not be called "jCharts" nor may "jCharts" appear
* in their names without prior written permission of Nathaniel G. Auvil. jCharts is a
* registered trademark of Nathaniel G. Auvil.
*
* 5. Due credit should be given to the jCharts Project (http://jcharts.sourceforge.net/).
*
* THIS SOFTWARE IS PROVIDED BY Nathaniel G. Auvil AND CONTRIBUTORS ``AS IS'' AND ANY
* EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
* jCharts OR ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
* IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE
************************************************************************************************/
package org.krysalis.jcharts.demo.simpleservlet;
import org.krysalis.jcharts.chartData.ChartDataException;
import org.krysalis.jcharts.chartData.PieChartDataSet;
import org.krysalis.jcharts.encoders.ServletEncoderHelper;
import org.krysalis.jcharts.nonAxisChart.PieChart2D;
import org.krysalis.jcharts.properties.ChartProperties;
import org.krysalis.jcharts.properties.LegendProperties;
import org.krysalis.jcharts.properties.PieChart2DProperties;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.awt.*;
import java.io.IOException;
public class PieChart2DServlet extends HttpServlet
{
//---all of my pie charts serviced by this Servlet will have the same properties.
private PieChart2DProperties properties;
private LegendProperties legendProperties;
private ChartProperties chartProperties;
private int width = 550;
private int height = 350;
/**********************************************************************************************
*
**********************************************************************************************/
public void init()
{
//---all charts of this type of pie chart are going to share the same properties.
this.properties = new PieChart2DProperties();
this.legendProperties = new LegendProperties();
this.legendProperties.setNumColumns( 2 );
this.legendProperties.setPlacement( LegendProperties.RIGHT );
this.chartProperties = new ChartProperties();
}
/**********************************************************************************************
*
**********************************************************************************************/
public void service( HttpServletRequest req, HttpServletResponse response ) throws ServletException, IOException
{
try
{
PieChart2D pieChart2D = new PieChart2D( this.getData(), this.legendProperties, this.chartProperties, this.width, this.height );
ServletEncoderHelper.encodeJPEG13( pieChart2D, 1.0f, response );
}
catch( Throwable throwable )
{
//HACK do your error handling here...
throwable.printStackTrace();
}
}
/******************************************************************************************
* Returns a Tests a 'real' data set and usage.
*
* @throws ChartDataException
******************************************************************************************/
private PieChartDataSet getData() throws ChartDataException
{
double[] data = new double[]{40, 15, 35, 65, 59};
Paint[] paints = new Paint[]{Color.blue, Color.red, Color.green, Color.yellow, Color.white};
String[] labels = {"BMW", "Honda", "Lexus", "Audi", "Acura"};
return new PieChartDataSet( "Cars That Own!", data, labels, paints, this.properties );
}
}