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   Re: [xml-dev] Errors in Kendall Clark's xml.com article on QNames

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Elliotte Rusty Harold <elharo@metalab.unc.edu> writes:

> At 1:50 PM +0000 2/13/02, Henry S. Thompson wrote:
> >2) "..there's no way for an XML processor to tell whether QNames are
> >    used in values." (again, quoting Lenz [2], ellipses in original)
> >
> >That's simply false -- any sensible use of QNames would involve a W3C
> >XML Schema or other type-assigning schema language, which in turn
> >would identify all element content and/or attribute values which were
> >QNames.  This means that using type-aware XPath 2.0 it would be
> >trivial to locate all QNames in a document.  Note further that any
> >sensible API for type-information-bearing infosets will expose the
> >_values_ of leaf nodes, which for QNames is defined as being a pair of
> >namespace name and local name.
> >
> No, that's simply true. Many of us aren't using schema-aware
> parsers. Most of us who are still don't have access to the PSVI type
> information in our applications. Even if we did, most of the documents
> we get in practice wouldn't have schemas.

The quote I disagreed with didn't say "I can't" or "my favourite
software doesn't", it said "there's no way".  All it takes to disprove
a universal is to give one counter-example, and I did.  I'm sorry your
parser isn't schema-aware, but it could be, and then you'd be better

  Henry S. Thompson, HCRC Language Technology Group, University of Edinburgh
          W3C Fellow 1999--2001, part-time member of W3C Team
     2 Buccleuch Place, Edinburgh EH8 9LW, SCOTLAND -- (44) 131 650-4440
	    Fax: (44) 131 650-4587, e-mail: ht@cogsci.ed.ac.uk
		     URL: http://www.ltg.ed.ac.uk/~ht/


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