Thus I decided for now to change my research field. Now I am going to work about XML.
I am going to write a standard (in the hope that it will become a W3C recommendation) about automatic transforming between different XML namespaces.
Now I am writing a draft, which is too rough to release it now. I will upload it as soon as my draft will become conceivable and readable.
To implement my standard I may recall my Java knowledge and make my work based on Saxon XSLT processor. This may require chaninging Saxon core and I may take this programming work.