[xsl] problem chaining stylesheets with java

[Paul Tremblay <phthenry@xxxxxxxxxxxxx>]

I am trying to write a java application to chain together xslt
stylesheets. My code below is taken out of Michael Kay's book. I almost
have gotten it to run except the very last part. 

What I need to do is chain serveral stylesheets together, and then run
the final transfromation through a SAX filter to change the encoding of
the file. (I need to change unicode to microsoft ascii: Ö =>
/'u214/'d6)

The first two stylesheets transform the document. But the last SAX
filter has no affect. I know that the document is running through the
SAX filter because if I tell the SAX class to simply print out the name
of the element, it does. But the SAX class does not filter to my final
output.

Oddly enough, if I had an extra stylesheet *after* the SAX filter, then
the SAX filter does take affect.

I am probably overlooking something silly.

Thanks

Paul

*******************************************************

//run program which will have a pipe

import javax.xml.transform.*;
import javax.xml.transform.stream.*;
import javax.xml.transform.sax.*;
import org.xml.sax.XMLFilter;
import java.io.File;
import org.xml.sax.helpers.XMLFilterImpl;
import org.xml.sax.Attributes;
import org.xml.sax.SAXException;


class Pipeline{
    public static void main(String[] args) throws Exception{
        int len = args.length;
	if (len != 1){
	   System.err.println("Please provide one argument");
	   System.exit(1);
	}
	new Pipeline().run(args[0]);
    }
    public void run(String input) throws Exception{
	StreamSource source = new StreamSource(new File(input));
	File style = new File("/home/paul/paultemp/test.xsl");
	File style2 = new File("/home/paul/paultemp/test2.xsl");
	File style3 = new File("/home/paul/paultemp/test3.xsl");
	TransformerFactory factory = TransformerFactory.newInstance();
	if (!factory.getFeature(SAXTransformerFactory.FEATURE_XMLFILTER)){
	    System.err.println("SAX Filters are not supported");
        }
	else{
	   System.err.println("Okay, we're ready to go!");
	   SAXTransformerFactory saxFactory = (SAXTransformerFactory)factory;

           //first filter
	   XMLFilter filter = saxFactory.newXMLFilter(new StreamSource(style));
	   filter.setParent(new com.icl.saxon.aelfred.SAXDriver());
           

           //second filter
	   XMLFilter filter2 = saxFactory.newXMLFilter(new StreamSource(style2));
	   filter2.setParent(filter);

           //third filter
	   XMLFilter filter3 = new PostFilter();
	   filter3.setParent(filter2);

           //If I used a fourth filter and change the last two lines in this method to
           //"filter4", then the above SAX filter works!
           //fourth filter
	   //XMLFilter filter4 = saxFactory.newXMLFilter(new StreamSource(style3));
	   //filter4.setParent(filter3);

	   TransformerHandler serializer = saxFactory.newTransformerHandler();
	   serializer.setResult(new StreamResult (System.out));
	   Transformer trans = serializer.getTransformer();
	   filter3.setContentHandler(serializer);
	   filter3.parse(source.getSystemId());

	}

    }
}
//This is just temporary. I need to change all the character info
// to a funky encoding.
class PostFilter extends XMLFilterImpl{
    public void startElement(String uri, String localName, String qName, Attributes atts)
	    throws SAXException{
	    String newLocalName = localName.toUpperCase();
            //if the line below is uncommented, the new local name appears
	    //System.err.println(newLocalName);
	    super.startElement(uri, newLocalName, qName, atts);
	    }
}

-- 

************************
*Paul Tremblay         *
*phthenry@xxxxxxxxxxxxx*
************************

 XSL-List info and archive:  http://www.mulberrytech.com/xsl/xsl-list