XOM API for Processing XML with Java

[vitrpp AT netscape.net]

Although I am new to XOM it caught my attention by the inplace update and 
validtion feature. I am currently looking for a way to update a DOM using 
XQuery (where the in place update feature can help) but want to make sure 
that the updates are validated (adheres to the associated schema). 
This means I need a way to associate a complex type (on a finer granularity) 
with the node(s) that I will fetch using the XQuery before morphing them.
Can some one suggest a way of doing it. 
One way we follow is to walk the Content Model provided by Abstract Schema 
implemenation before updating the DOM. But I am looking for something elegant 
and widely used solution. 
I was wondering if Saxon with JAXP 1.3 can  be useful.(I am yet to catch up 
with these two as well).

Can some one share some information?

many thanks

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