[xsl] docbook - fo - pdf XInclude

[Thomas Richter <t.richter@xxxxxxxx>]

Hi,
I want to convert Docbook to fo and then to pdf.
The docbook uses xi:include XInclude.
I tried to convert with java org.apache.xalan.xslt.Process
and the xslt from http://docbook.sourceforge.net/
( docbook-xsl-1.65.1/fo/docbook.xsl )
But the includes are not dereferenced and the document is empty, because 
xalan can not handle XIncludes.
I have to use java and not C ( http://xmlsoft.org/XSLT/ xsltproc )
which works with XIncludes.
So fas as I know xalan 2.4 is build in Java 1.4.
So can I update to newer xalan or has it nothing to do with xalan?
(or have I to update xerces or can I use saxon?)

mkr Thomas