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RE: RE: RE: RE: unique question

From: "Michael Kay" <mike@--------.--->
To: "'Markus Gamperl'" <markus.gamperl@---.-->, <xmlschema-dev@--.--->
Date: 2/15/2007 10:31:00 AM
> 
> But why isn't the default namespace enough within xs:unique? 
> Is this the definition of xs:unique? What's the sense of the 
> default namespace...

For better or worse, the XPath 1.0 specification states that an unprefixed
name in a path expression represents a name in no namespace, regardless of
any default namespace that might be in scope.

The original motivation for this, I think, was the scenario where XPath is
embedded within XSLT and the default namespace for the source document is
different from that for the result document. But like everything else to do
with namespaces, it has tripped a lot of people up over the years.

XPath 2.0 makes the default namespace for unprefixed element names something
that can be defined in the context, so XML Schema could, if it wished, say
that it is taken from the default namespace of the enclosing element.

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


From markus.gamperl@g... Thu Feb 15 11:04:24 2007
Receiv


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