Creating docx/doc From Custom Xml Java Using XSLT

Question

I have a custom XML which i have to convert into Microsoft Word Doc/Docx. There are many Java APIs like Apache POI, docx4j but i couldn't find any support for creating a word document using XSLT.

Docx4j definitely supports for conversion of docx to xml but what about the way around?

I googled and found WordML

So i thought of using XSLT to first convert my custom xml to WordML format and then later on convert WordML to doc/docx.

     Custom XML----> WordML ------> Docx/Doc

My questions are :

• how would i convert WordML to docx/doc (an open source method)
• is it possible to achieve toc linking in WordML

Kindly guide me through if am doing it correctly or suggest a way to do it. Thanks.