How to create multiple output files using TrAX?

Question

I am new in this field. I'm trying to create multiple xml output files using TrAX. I have to parse a xml source file and output it to multiple xml files. My problem is that it only creates one output file and puts all the parsed data there. When i use saxon and run xsl and xml files, it works fine and creates multiple files...it has something to do with my java code...Any help is greatly appreciated.
Here's my XSL file
<?xml version="1.0"?>
<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform" version="1.1"
<xsl:template match="data_order">
<data_order>
     <xsl:copy-of select="contact_address"/>
     <xsl:copy-of select="shipping_address"/>
     <xsl:apply-templates select="ds"/>
</data_order>
</xsl:template>
<xsl:template match="ds">
<xsl:variable name="file" select="concat('order', position(),'.xml')"/>
<order number="{position()}" href="{$file}"/>
<xsl:document href="{$file}">
<xsl:copy-of select="."/>     
</xsl:document>
</xsl:template>
</xsl:stylesheet>
xml source file
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE operation SYSTEM 'data_order.dtd'>
<data_order job_id='00-00-000' origin='PM-ESIP'>
     <contact_address>
          <first_name>ssssss</first_name>
          <last_name>sssss></last_name>
          <phone>2323232</phone>
          <email>dfdfdsaf</email>
     </contact_address>
     <ds ds_short_name ='mif13tbs'>
          <output>
               <media_format>neither</media_format>
               <media_type>FTP</media_type>
               <output_format>GIF</output_format>
          </output>
     </ds>
          <ds ds_short_name ='mif15tbs'>
          <output>
               <media_format>neither</media_format>
               <media_type>FTP</media_type>
               <output_format>GIF</output_format>
          </output>
     </ds>
</data_order>
My java file
import javax.xml.transform.*;
import javax.xml.transform.stream.*;
import java.io.*;
public class FileTransform {
public static void main(String[] args)
throws Exception {
File source = new File(args[0]);
File style = new File(args[1]);
File out = new File(args[2]);
TransformerFactory factory = TransformerFactory.newInstance();
Transformer t = factory.newTransformer(new StreamSource(style));
t.transform(new StreamSource(source), new StreamResult(out));

Answer 1

Saxon has specific extensions. In this case it is <xsl:document>. That looks like a standard XSLT element, but it actually isn't. The history behind it is this: There was a proposal to create a new version of XSLT, called XSLT 1.1. One of the new features of this version was to be this xsl:document element. The author of the Saxon product, Michael Kay, is one of the people on the W3C committee directing the evolution of XSLT, so he upgraded his product to implement XSLT 1.1. But then the committee decided to drop XSLT 1.1 as a recommendation. So that left Saxon in the strange position of implementing a non-existent extension to XSLT.
The other outcome of this process was that XSLT (1.0) does not have a way of producing more than one output file from an input file. And so the short answer to your question is "Trax can't do that." However, XSLT 2.0 will be able to do that, although it is not yet a formal W3C recommendation, and when it does become one it will take a while before there are good implementations of it. (I predict that Saxon will be the first good implementation.)
One of the problems with XML and XSLT is that what you knew a year ago is probably obsolete now, because of all the evolution going on. So being new in the field is not a disadvantage, unless you get stung by reading obsolete tutorials or magazine articles.