Howto include external document from Xalan extension?

Question

Hi,
I'm trying to include an external XML document via the document() function,
but I can't seem to get it to work. The catch is that the external document is
created by a Xalan extension function.
My code is as below. The code in the extension class is successfully executed.
However, when I run the transformation, I keep getting a
java.lang.ArrayIndexOutOfBoundsException. Does anyone know what's going
wrong?
Regards, Ronald Wildenberg.
Style sheet:
<?xml version="1.0" encoding="utf-8" ?>
<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
   xmlns:cpb="builders.CpbBuilderFunctions" extension-element-prefixes="cpb">
<xsl:template match="/">
   <xsl:copy-of select="cpb:test()"/>
</xsl:template>
</xsl:stylesheet>Java code:
public class CpbBuilderFunctions {
   public static Document test() {
      try {
         DocumentBuilderFactory documentBuilderFactory = DocumentBuilderFactory.newInstance();
         DocumentBuilder builder = documentBuilderFactory.newDocumentBuilder();
         Document document = builder.parse(new InputSource(new StringReader("")));
         System.out.println("Successfully returning!");
         return document;
      catch (Throwable e) {
         e.printStackTrace();
      return null;
}

Answer 1

Ok, I tried again to implement this after the weekend and now it all works. Very nice of course, but I don't know what went wrong before. But this item can be considered closed :)