[jdom-interest] Problems using JDOM and XSLT

[Yuri de Wit]

I have the latest JDOM source plus Xalan 2.0.1 and the XsltTranformer helper
class provided ealier in the mailing list, but I am not able to do a:

	JDOM -> XSLT-> JDOM transformation

I am getting the following exception in Xalan:
javax.xml.transform.TransformerException
	at
org.apache.xalan.transformer.TransformerImpl.transformNode(TransformerImpl.j
ava:1183)
	at
org.apache.xalan.transformer.TransformerImpl.run(TransformerImpl.java:2942)
	at java.lang.Thread.run(Thread.java:484) ---------
java.util.EmptyStackException
	at
org.apache.xalan.transformer.TransformerImpl.applyTemplateToNode(Transformer
Impl.java:2038)
	at
org.apache.xalan.transformer.TransformerImpl.transformNode(TransformerImpl.j
ava:1219)
	at
org.apache.xalan.transformer.TransformerImpl.run(TransformerImpl.java:2942)
	at java.lang.Thread.run(Thread.java:484)


ANY IDEAS??

Thanks,

Stylesheet:
<?xml version='1.0' encoding='UTF-8'?>
<xsl:stylesheet version='1.0'
xmlns:xsl='http://www.w3.org/1999/XSL/Transform'>
	<xsl:output method='xml' indent='yes'/>
			<xsl:template match='BEGIN'>
      <xsl:element name='WHATEVER'>DATA</xsl:element>
	</xsl:template>
</xsl:stylesheet>

Code:
import java.io.IOException;

import org.jdom.Document;
import org.jdom.Element;
import org.jdom.JDOMException;
import org.jdom.input.SAXHandler;
import org.jdom.output.SAXOutputter;

import org.xml.sax.XMLReader;
import org.xml.sax.InputSource;
import org.xml.sax.SAXException;
import org.xml.sax.helpers.XMLReaderFactory;

import javax.xml.transform.Templates;
import javax.xml.transform.TransformerFactory;
import javax.xml.transform.TransformerConfigurationException;
import javax.xml.transform.sax.SAXResult;
import javax.xml.transform.sax.SAXTransformerFactory;
import javax.xml.transform.sax.TemplatesHandler;
import javax.xml.transform.sax.TransformerHandler;

/**
 * Helper class with one static method to allow clients to transform JDOM
 * documents using XSLT.
 */
public class XsltTransformer
{
    private static SAXOutputter saxOutputter;
    private static SAXTransformerFactory saxTFactory;
    private static TemplatesHandler templatesHandler;
    private static XMLReader reader;

    static{
        try{
            // don't forget to set the ContentHandler before using
            // the outputter!
            saxOutputter = new SAXOutputter( null );
            saxTFactory = (SAXTransformerFactory)
TransformerFactory.newInstance();
            templatesHandler = saxTFactory.newTemplatesHandler();
            reader = XMLReaderFactory.createXMLReader();
            reader.setContentHandler( templatesHandler );
        }
        catch( Exception e ){
            e.printStackTrace();
            //System.exit( -1 );
        }
    }

    /**
     * Transforms a JDOM document into another JDOM document using the given
     * stylesheet.
     */
    public static Document transform( Document sourceDoc, String
stylesheet )
         throws SAXException, IOException,
TransformerConfigurationException, JDOMException
    {
            reader.parse( stylesheet );

            Templates templates = templatesHandler.getTemplates();
            TransformerHandler handler = saxTFactory.newTransformerHandler(
                    templates );

            Document targetDoc = new Document((Element)null);
            // had to turn SAXHandler into a public class to use it here:
            handler.setResult( new SAXResult( new
SAXHandler( targetDoc ) ) );

            saxOutputter.setContentHandler( handler );
            saxOutputter.output( sourceDoc );

            return targetDoc;
    }

Yuri