Radu, many thanks for your reply. ... and thank you for acknowledging this task to be difficult. I feel better already, as I am struggling with it. :) So you do suggest using Xcerxes' object model of the Schema document to determine the possible opertions on a node? I went down this route using this...

I see. So you think that the Schema validation, XQuery, Xpath implementations are enough to implement a position aware xml editor api? Maybe it is not clear what I want to do. I have a xml document X which is conform to a schema Y. I have a node in that document X. How can I find out which operation...

adrian, thanks alot for this quick reply. wow! I am looking at there website right now http://www.saxonica.com , maybe I can offer them a redesign in exchange for a site license .. :) I see XSLT and xQuery support for their main features, which is not exactly what I was looking for. Is there some sp...

I am looking for a java based component /library / product which allows me to tell at a specific node of my XML document which operations ( add subnode, add attribute, delete node itself) are allowed based on a given XML schema. Could anybody hint me into a direction which Java based XML API would a...