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RE: XPath 2.0 Best Practice Issue: Graceful Degradation

  • From: "Costello, Roger L." <costello@m...>
  • To: <xml-dev@l...>
  • Date: Fri, 25 Jan 2008 10:23:51 -0500

RE:  XPath 2.0 Best Practice Issue: Graceful Degradation

Thanks David.

> If the input is validated (against xsd or relax or schematron or any
> other schema language of choice) the user will get specific error
> message about missing or incorrectly typed values at an earlier
stage,
> before the calculation has been attempted.

Doesn't that presuppose a certain environment: the XPath is running in
an environment where the data has already been checked?

Ah, you are bringing up an excellent point: how do we design an XPath
statement that gracefully degrades when the expected schema checking is
absent?

/Roger 


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