Subject: Re: [xsl] XPath "validation" From: Michael Kay <mike@xxxxxxxxxxxx> Date: Tue, 06 Dec 2011 15:57:29 +0000 |
The number of paths that can find a non-empty result is of course infinite. Even if you confine yourself to paths using the child and attribute axes, the number of possible paths is infinite if the schema is recursive. That doesn't mean that you can't represent this infinite set in some way, or compute it in a finite time; just don't expect the answer to be a simple list of permitted path expressions.Anthony B. Coates presented "'Full Impact' Schema differencing" at XML Prague 2010. It uses a thing called XML Zebra, available from http://www.xmlzebra.com, to generate all XPaths from an XML Schema.
Michael Kay Saxonica
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