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

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Eric van der Vlist <vdv@dyomedea.com> writes:

> Henry S. Thompson wrote:
>  > Why use two mechanisms to do the same thing,
> > namely establish ownership/semantic scope for names?
> To me, this is a design issue more than a practical one: namespaces
> belong to markup while QNames belong to applications.
> This is the same kind of question than:
> - Why model communication protocols as layers?
> - Why defined private classes?
> It's allways more concise to access private classes, methods and
> properties directly and to short-circuit the layers of a protocol...
> Allowing QNames creates a dependency between the applications and the
> markup which should not exist. It makes it more difficult to build
> applications relying on a "virtual XML" which is never serialized as
> XML.

Intriguing -- I would say exactly the opposite, i.e. that QNames provide a
uniform way to ensure that "virtual XML" (what I think of as the
type-enriched infoset) has (namespace name,local name) pairs in it
wherever you want them.

  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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