Subject: Re: [xsl] XPath "validation" From: Michael Kay <mike@xxxxxxxxxxxx> Date: Tue, 06 Dec 2011 15:52:06 +0000 |
GivenAbsolutely. Schema-aware XPath 2.0 (and XSLT/XQuery) processors such as Saxon-EE do exactly this.
(1) an XML schema (expressed in any schema language, though my strong preference would be RNG/C)
and
(2) an XPath path expression (whether XPath 1.0 or 2.0),
it should be possible to compute the "possibility" of the path expression's finding anything in an XML document that is valid under the schema, understood as one of the three following values:
* Guaranteed * Possible * Impossible
Question: Does there exist any software to compute "possibility" in this way?
Michael Kay Saxonica
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