Proposals to improve xalan extension: com.nwalsh.xalan.Text

[Alexander Karnstedt <alexander_berlin@gmx.de>]

I find the ability to reference external text data really useful. But I had 
to struggle with some problems according the appropriate extension class 
�com.nwalsh.xalan.Text� to get it to work for me. So here are my experiences:

First, returning a NodeSet object (of TextNodes) gives me an error from 
Xalans DTMManager (Data Type Mapping?). So I had to redesign the insertfile 
method to return a string object instead.

Second: what is the base directory for relative paths in the 
texdata/fileref attribute? I think its simply taken from wherever you start 
Xalan. But this seems to be wrong - shouldn't the base (defaultly) be equal 
to that directory where the including document resides?
However, I've would propose to use the URIResolver object to resolve the 
full URL,

in �com.nwalsh.xalan.Text�, instead of:

       fileURL = new URL(href);

I used this:

       this.href = getFilename(context, elem);
       String base = context.getTransformer().getBaseURLOfSource();
       javax.xml.transform.URIResolver resolver = 
context.getTransformer().getURIResolver();
       javax.xml.transform.Source source = this.resolver.resolve(this.href, 
this.base);
       this.hrefSystemID = source.getSystemId();
       ....
       fileURL = new URL(this.hrefSystemID);


Regards,
Alex

PS: Using docbook-xsl 1.61.3, Xalan 2.5.1