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Re: A question about datatypes

From: Henry S. Thompson <ht@cogsci.ed.ac.uk>
Date: 17 Jan 2003 12:02:03 +0000
To: "David Tombs" <tombs@svrc.uq.edu.au>
Cc: <xmlschema-dev@w3.org>
Message-ID: <f5bd6mwassk.fsf@erasmus.inf.ed.ac.uk>

"David Tombs" <tombs@svrc.uq.edu.au> writes:

> Henry,
> 
> > In general, the philosophy behind XML in general, and XML Schema in
> > particular, is that where you need to capture and/or control
> > structure, use markup.  This is the reasoning behind the lack of
> > support for micro-parsing, template-based simple types, etc.
> 
> Is that a 'no'?

Yes.

> And if that is the philosophy, why are list datatypes in as a simple type?

Legacy -- we had to support IDREFS, ENTITIES, NOTATIONS and provided
lists as the minimum necessary underlying generalisation.

Similarly for dates, (which I argued against and lost on).

ht
-- 
  Henry S. Thompson, HCRC Language Technology Group, University of Edinburgh
          W3C Fellow 1999--2002, part-time member of W3C Team
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	    Fax: (44) 131 650-4587, e-mail: ht@cogsci.ed.ac.uk
		     URL: http://www.ltg.ed.ac.uk/~ht/
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Received on Friday, 17 January 2003 07:01:59 GMT

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