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RE: XPath challenge: can you simplify this XPath expression?

• From: "Michael Kay" <mike@s...>
• To: "'Philippe Poulard'" <philippe.poulard@s...>,"'Costello, Roger L.'" <costello@m...>
• Date: Mon, 11 May 2009 18:13:09 +0100

> I don't know how to write it with XPath 2, but wouldn't it be 
> simpler to
> say: "the context has the type xxx" where xxx is the type 
> defined in a schema, using schema-element() ?
> 
> I'm almost sure Saxon-SA can do that... any confirmation ?

If there is such a type then it can. But I somehow suspect Roger is writing
this XPath expression to go in an assertion within a schema. The rules are
carefully designed to avoid circularity: you can't check whether something
is an instance of a type during the process of validating it against that
type.

Regards,

Michael Kay
http://www.saxonica.com/
http://twitter.com/michaelhkay 

• References:
  • XPath challenge: can you simplify this XPath expression?
    • From: "Costello, Roger L." <costello@m...>
  • Re: XPath challenge: can you simplify this XPath expression?
    • From: Philippe Poulard <philippe.poulard@s...>