Hello, I'm planning to add an interface for external expression validator into ODE compiler. That way there could appear 3rd party plugins, which do validation using any tools. I'm also planning to write an example implementation, which makes use of Saxon SA (Schema Aware commercial version) and publish it as open source 3rd party plugin. Saxon SA does well job of finding schema related problems in expressions - xpaths and xqueries, so it may be useful. There was also a discussion some time ago about providing Psycho XPath schema aware validation. It was about substituting Saxon in ODE, which ended up as a bad idea. But implementing it as an external plugin for ODE can be a good idea.
Regards, -- Rafał Rusin http://www.touk.pl http://top.touk.pl http://www.mimuw.edu.pl/~rrusin
