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Re: Deriving from xs:anySimpleType

From: Henry S. Thompson <ht@inf.ed.ac.uk>
Date: Fri, 17 Nov 2006 10:00:28 +0000
To: Sandy Gao <sandygao@ca.ibm.com>
Cc: "Michael Kay" <mike@saxonica.com>, xmlschema-dev@w3.org
Message-ID: <f5bu00ycs03.fsf@erasmus.inf.ed.ac.uk>

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I prefer option (3), allow it.  We allow vacuous redefinition of
anyType, why not of anySimpleType?

Note further that in 1.1, 3.15.1 has already changed to allow for
anyAtomicType. . .

I think we just add to that paragraph, along the lines of

  Non-restricting derivations from anySimpleType and anyAtomic type
  are also allowed, that is, derivations involving no facets.

and add a parallel exception to the para. Michael pointed to
originally, allowing for variety to be absent in cases of vacuous
restriction of anySimpleType.

ht
- -- 
 Henry S. Thompson, HCRC Language Technology Group, University of Edinburgh
                     Half-time member of W3C Team
    2 Buccleuch Place, Edinburgh EH8 9LW, SCOTLAND -- (44) 131 650-4440
            Fax: (44) 131 650-4587, e-mail: ht@inf.ed.ac.uk
                   URL: http://www.ltg.ed.ac.uk/~ht/
[mail really from me _always_ has this .sig -- mail without it is forged spam]
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Received on Friday, 17 November 2006 10:00:53 UTC

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