EL not working with custom TLD

[Utkarsh Singh]

I am building a custom TLD for generation of pie chart from the data give. For that I need to provide the HashMap which contains the data on the JSP by EL.
but it is not working. The code is attached below...

Code for JSP:

<%@ taglib uri="/WEB-INF/tld/pieChart.tld" prefix="pie"%>
<h:panelGrid style="border: 1px solid #6c9dc6;background-color:#FFFFFF;height:150px; text-align:center" width="357px" border="0">
<pie:customPieChart3D imgHeight="200" imgWidth="400" strFileName="piecoe.gif"  hashMapData="#{demoBean.hashMapData }"/>
</h:panelGrid>

Code for Tag Handler

package com.customTag;

import java.util.HashMap;

import javax.faces.FacesException;
import javax.faces.component.UIComponent;
import javax.faces.webapp.UIComponentTag;

public class PieChart3D extends UIComponentTag
{
	private String imgHeight = null;
	private String imgWidth = null;
	private String strFileName = null;
	private HashMap<String, String> hashMapData = new HashMap<String, String>();

	public HashMap<String, String> getHashMapData()
	{
		return hashMapData;
	}
	public void setHashMapData(HashMap<String, String> hashMapData)
	{
		this.hashMapData = hashMapData;
	}
	public String getStrFileName()
	{
		return strFileName;
	}
	public void setStrFileName(String strFileName)
	{
		this.strFileName = strFileName;
	}
	public String getImgWidth()
	{
		return imgWidth;
	}
	public void setImgWidth(String imgWidth)
	{
		this.imgWidth = imgWidth;
	}
	public String getImgHeight()
	{
		return imgHeight;
	}
	public void setImgHeight(String imgHeight)
	{
		this.imgHeight = imgHeight;
	}

	@Override
	public String getComponentType()
	{
		return "customPieChart3D";
	}

	@Override
	public String getRendererType()
	{
		return "pie";
	}

	public void release()
	{
		super.release();
	}

	protected void setProperties(UIComponent component) throws FacesException
	{
		super.setProperties(component);
		((UIPieChart3D)component).setImgHeight(imgHeight);
		((UIPieChart3D)component).setImgWidth(imgWidth);
		((UIPieChart3D)component).setStrFileName(strFileName);
		((UIPieChart3D)component).setHashMapData(hashMapData);
	}	
}

Code for TagUI Class:

package com.customTag;

import java.awt.Color;
import java.awt.Font;
import java.awt.Rectangle;
import java.awt.Shape;
import java.io.File;
import java.io.IOException;
import java.text.AttributedString;
import java.util.HashMap;
import java.util.Iterator;
import java.util.Map;

import javax.faces.component.UIOutput;
import javax.faces.context.FacesContext;
import javax.faces.context.ResponseWriter;

import org.jfree.chart.ChartFactory;
import org.jfree.chart.ChartRenderingInfo;
import org.jfree.chart.ChartUtilities;
import org.jfree.chart.JFreeChart;
import org.jfree.chart.entity.StandardEntityCollection;
import org.jfree.chart.labels.PieSectionLabelGenerator;
import org.jfree.chart.plot.PiePlot3D;
import org.jfree.chart.title.LegendTitle;
import org.jfree.data.general.DefaultPieDataset;
import org.jfree.data.general.PieDataset;
import org.jfree.ui.RectangleEdge;
import org.jfree.util.Rotation;

import com.MIS_Constants;

public class UIPieChart3D extends UIOutput
{
	java.util.ResourceBundle _rbEnvironment = java.util.ResourceBundle.getBundle("environment");
	ClassLoader classLoader = Thread.currentThread().getContextClassLoader();

	private String imgHeight;
	private String imgWidth;
	private String strFileName;
	private HashMap<String, String> hashMapData = new HashMap<String, String>();
	
	public void encodeBegin(FacesContext context) throws IOException
	{		
		ResponseWriter writer = context.getResponseWriter();
		writer.startElement("div", this);
		int _intEntryCount = hashMapData.size();
		File _imgFile = null;

		try
		{
			DefaultPieDataset _pieDataSetCOE = new DefaultPieDataset();			
			Iterator i = hashMapData.entrySet().iterator();
			while(i.hasNext())
			{
				Map.Entry<String, String> _entry = (Map.Entry<String, String>)i.next();
				_pieDataSetCOE.setValue(_entry.getKey(), Integer.parseInt(_entry.getValue()));
			}
			
			JFreeChart _pieChart = ChartFactory.createPieChart3D("", _pieDataSetCOE, true, false, false);

			PiePlot3D _objPlot = (PiePlot3D) _pieChart.getPlot();
			_objPlot.setLabelGenerator(null);

			_objPlot.setDepthFactor(0.15);
			_objPlot.setDarkerSides(true);
			_objPlot.setStartAngle(180);
			_objPlot.setDirection(Rotation.ANTICLOCKWISE);

			_pieChart.setBackgroundPaint(Color.WHITE);
			_objPlot.setBackgroundPaint(Color.WHITE);
			_objPlot.setOutlinePaint(null);

			_objPlot.setInteriorGap(0);

			_objPlot.setSimpleLabels(true);
			_objPlot.setLabelBackgroundPaint(null);
			_objPlot.setLabelOutlinePaint(null);
			_objPlot.setLabelShadowPaint(null);
			_objPlot.setLabelPaint(Color.WHITE);
			_objPlot.setLabelFont(new Font("Verdana", Font.BOLD, 12));
			_objPlot.setLabelLinksVisible(false);
			_objPlot.setLabelGenerator(new PieSectionLabelGenerator()
			{
				@Override
				public String generateSectionLabel(PieDataset arg0, Comparable arg1)
				{
					Integer temp = ((arg0.getValue(arg1)).intValue());
					return temp.toString();
				}

				@Override
				public AttributedString generateAttributedSectionLabel(PieDataset arg0, Comparable arg1)
				{
					return null;
				}
			});

			for(int count = 0; count<_intEntryCount; count++)
			{
				_objPlot.setSectionPaint(count, MIS_Constants.COLOR_ARR[count]);
			}

			Shape _objShape=new Rectangle(8,8);
			_objPlot.setLegendItemShape(_objShape);

			_pieChart.setBorderVisible(false);

			LegendTitle _objLegend = _pieChart.getLegend();
			_objLegend.setPosition(RectangleEdge.TOP);
			_objLegend.setItemFont(MIS_Constants.TITLE_FONT);
			_objLegend.setBackgroundPaint(Color.WHITE);
			_objLegend.setBorder(0, 0, 0, 0);

			final ChartRenderingInfo _objInfo = new ChartRenderingInfo(new StandardEntityCollection());
			String _imageFilePath = _rbEnvironment.getString("TEMP_PATH");
			_imgFile = new File(_imageFilePath + "/" + strFileName);
			ChartUtilities.saveChartAsPNG(_imgFile, _pieChart, Integer.parseInt(imgWidth), Integer.parseInt(imgHeight), _objInfo);
			writer.write("<IMG src='" + context.getExternalContext().getRequestContextPath() + "/imageServlet?fileName=" + strFileName + "' HEIGHT='" + Integer.parseInt(imgHeight) + "' WIDTH='" + Integer.parseInt(imgWidth) + "' align='middle' />");
		}
		catch (Exception _exception)
		{
			_exception.printStackTrace();
		}
		finally
		{
			_imgFile = null;
		}
	}

	public void encodeEnd(FacesContext context) throws IOException
	{
		ResponseWriter writer = context.getResponseWriter();
		writer.endElement("div");
	}

	public String getImgHeight()
	{
		return imgHeight;
	}
	public void setImgHeight(String imgHeight)
	{
		this.imgHeight = imgHeight;
	}
	public String getImgWidth()
	{
		return imgWidth;
	}
	public void setImgWidth(String imgWidth)
	{
		this.imgWidth = imgWidth;
	}
	public String getStrFileName()
	{
		return strFileName;
	}
	public void setStrFileName(String strFileName)
	{
		this.strFileName = strFileName;
	}
	public HashMap<String, String> getHashMapData()
	{
		return hashMapData;
	}
	public void setHashMapData(HashMap<String, String> hashMapData)
	{
		this.hashMapData = hashMapData;
	}
}

Code for TLD File

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE taglib
  PUBLIC "-//Sun Microsystems, Inc.//DTD JSP Tag Library 1.2//EN"
  "http://java.sun.com/dtd/web-jsptaglibrary_1_2.dtd">

<taglib>
	<tlib-version>1.0</tlib-version>
	<jsp-version>1.2</jsp-version>
	<short-name>pie</short-name>
	<uri>http://PieChartTLD.com/</uri>
	<tag>
		<name>customPieChart3D</name>
		<tag-class>com.customTag.PieChart3D</tag-class>
		<body-content>empty</body-content>
		<attribute>
			<name>imgHeight</name>
			<required>true</required>
			<rtexprvalue>true</rtexprvalue>
			<type>java.lang.String</type>
		</attribute>
		<attribute>
			<name>imgWidth</name>
			<required>true</required>
			<rtexprvalue>true</rtexprvalue>
			<type>java.lang.String</type>
		</attribute>
		<attribute>
			<name>strFileName</name>
			<required>true</required>
			<rtexprvalue>true</rtexprvalue>
			<type>java.lang.String</type>
		</attribute>
		<attribute>
			<name>hashMapData</name>
			<required>true</required>
			<rtexprvalue>true</rtexprvalue>
			<type>java.util.HashMap</type>
		</attribute>
	</tag>
</taglib>

[harshvardhan ojha]

Hi Utkarsh,

Although your code is very lengthy i found that

<tag-class>com.ultimatix.speed.customTag.PieChart3D</tag-class> 

is wrong. Please provide your log if this will not solve your problem.

[Utkarsh Singh]

Sorry for the mistake but that's actually

<tag-class>com.customTag.PieChart3D</tag-class>