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   implications of xpath 2.0 for schematron, XSD

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  • To: xml-dev@lists.xml.org
  • Subject: implications of xpath 2.0 for schematron, XSD
  • From: Bryan Rasmussen <bry@itnisk.com>
  • Date: Fri, 13 May 2005 11:21:11 +0200
  • User-agent: Internet Messaging Program (IMP) 3.2.2

I was wondering if anyone has given thought to the 
implications of xpath 2.0 for schematron (possible future xpath 2.0 using
schematron), especially as it relates to the PSVI. 
As lots of people have been using Schematron as an extension to other schema
languages, via the use of embedded Schematron, what would the implications in
that situation be? 
In one way I think it would be great, in that one thing I have found Schematron
useful for is developing algorithmic checks on text content, and XPath 2.0
extends the ability to do this greatly. 
Finally, one of the things that have often worried me vis-a-vis the future of
Schematron is that I figured at some point it would just be absorbed into W3C
Schema, given that it was just too useful not to be. But the concept of W3C 2.5
or something, with Xpath capabilities and a reliance on Xpath 2.0 seems uhm
scary. Of course that could conceivably also be a problem in the context of
xsd:unique, though obviously not as hairy. 

Bryan Rasmussen


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