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Re: Derivation by restriction in XML Schema

From: Henry S. Thompson <ht@cogsci.ed.ac.uk>
Date: 07 Mar 2000 08:45:45 +0000
To: "Arnold, Curt" <Curt.Arnold@hyprotech.com>
Cc: "'xml-dev@xml.org'" <xml-dev@xml.org>, "'www-xml-schema-comments@w3.org'" <www-xml-schema-comments@w3.org>
Message-ID: <f5bzosb2mo6.fsf@cogsci.ed.ac.uk>
"Arnold, Curt" <Curt.Arnold@hyprotech.com> writes:

> >4) You can't restrict material from another namespace, 
> >whether it's attribute or element, unless you own, or 
> >bogusly claim to own, rights to define elements, 
> >attributes, types in that namespace, which, in the 
> >case of the XML namespace, you don't.
> 
> I don't think I buy that.  If I include the xlink:show
> attribute in an element by referencing its attribute
> group from the xlink schema, it would seem appropriate
> for me to say that the default is "replace" or that "embed"
> is prohibited in this context.

Attribute 'equivalence classes' would give you that, and they may yet
make it in to the spec.

ht
-- 
  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/
Received on Tuesday, 7 March 2000 03:46:09 GMT

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