[xsl] How to output an element from within an extension element?

[Michael Ody <Michael.Ody@xxxxxxxxxxxx>]

What's the correct way to output an element to the result tree from within
the code of an extension element (or function)?

As a dummy example, let's say I want to write a Javascript extension element
(using the Xalan-Java processor) to output a <p> tag, then process
the child elements of the context node, then output a </p> tag.  The code
I've got at the moment is

<?xml version="1.0"?> 
<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform";
                xmlns:lxslt="http://xml.apache.org/xslt";
                xmlns:my="MyNamespace"
                extension-element-prefixes="my"
                version="1.0">
                
  <lxslt:component prefix="my" elements="para">
  <lxslt:script lang="javascript">
    <![CDATA[

      function para(xslContext,thisElement) {
        xslContext.outputToResultTree(xslContext.getStylesheet(),"<p>");
        
        xslTrans = xslContext.getTransformer();
        xslTrans.executeChildTemplates(thisElement,
           xslContext.getContextNode(),
           xslContext.getMode(),
           true
        );
        
        xslContext.outputToResultTree(xslContext.getStylesheet(),"</p>");
        
        return null;
      }
    ]]>
  </lxslt:script>
  </lxslt:component>

  <xsl:template match="/">
    <my:para>
      This is a paragraph.
    </my:para>
  </xsl:template>
</xsl:stylesheet>

Of course, this isn't right.  I don't want to output the text strings '<p>'
and '</p>'; I want to output an element node <p>, but I haven't been able to
find any documentation or examples which mention this kind of thing.  (In
fact, I only found out about the .executeChildTemplates method by looking in
the source code for <xalan:write>!  Where *should* I look for a guide to
neat things I can do in Javascript extension elements/functions?)

Second question: Let's say I put the xsl:component and xsl:script stuff
shown above in a separate stylesheet, and then include or import this into
my main stylesheet.  Will the main stylesheet *and any other stylesheets
included/imported by it* be able to 'see' the definition of <my:para>?

All help appreciated,

Mike.

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