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Subject: Re: [clr-dev] Question about the validation tools

 > Any XPath expression can be used.

I feel a bit uncomfortable with that because:

(1) I'm thinking of working with object instances generated from XML 
files and I want to apply the validation rules directly to these objects 
at the GUI level -- or displaying the filtered choices to the user.

(2) My idea is to have the application read the XPath / Schematron 
expressions and see how I can apply these rules directly on the objects.

(3) It might not be an easy task because I see that the XPath grammar -- 
http://www.antlr.org/grammar/1264460091565/XPath2.g -- is somehow very 

Would this be a possibility that OASIS defines a subset of the XPath 
grammar authorized in a CVA file, with this in mind that the expressions 
allowed in that subset could easily be parsed by most languages, even 
those that do not understand natively XPath? After all, there might be a 
chance that not all of XPath be useful to grab a record...


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