[xsl] Re: Query re XMLSpy XPath engine

[Elliotte Rusty Harold <elharo at metalab dot unc dot edu>]

At 8:21 AM -0700 7/22/02, Dimitre Novatchev wrote:

> >  > At 1:23 PM +1000 7/22/02, Michael Leditschke wrote:
> >  >
> >  > I have the following document
> >  >
> >  > <root xmlns:html="http://www.w3.org/1999/xhtml";;
> >  > xmlns="http://www.a.com";;>
> >  >   <hr xmlns="http://www.w3.org/1999/xhtml"/>
> >  > </root>

> As the "html" prefix is specified on the top element of the xml
> docoment, the evaluation of "//html:hr" must be return the element:
>
> <hr xmlns="http://www.w3.org/1999/xhtml"/>
No, not necessarily. The XPath expression does not occur in the XML 
document being queried. Thus the namespace bindings from the source 
document do not apply to the XPath expression. We do not know in what 
context the XPath expression at issue does appear (an XPointer? and 
XSLT stylesheet? a W3C XML Schema? a Schematron schema? something 
else). Thus we do not know which namespace bindings are in scope for 
the XPath expression. We should not assume they are the same as in 
the source document itself.
--

+-----------------------+------------------------+-------------------+
| Elliotte Rusty Harold | elharo@metalab.unc.edu | Writer/Programmer |
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|          XML in a  Nutshell, 2nd Edition (O'Reilly, 2002)          |
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