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Re: inconsistency in PR vis. simpleType final attribute

From: Henry S. Thompson <ht@cogsci.ed.ac.uk>
Date: 23 Mar 2001 10:06:12 +0000
To: neilg@ca.ibm.com
Cc: W3C XML Schema IG <w3c-xml-schema-ig@w3.org>
Message-ID: <f5bg0g4ol4b.fsf@cogsci.ed.ac.uk>
neilg@ca.ibm.com writes:

> Hello all,
> I notice that in section 3.14.1 of the PR draft of the Structures spec, we
> have:
>      {final}
>      A subset of {extension, list, restriction, union}.
> and later on:
> A simple type definition with an empty specification for {final} can be
> used as the {base type definition}
> for other types derived by either of extension or restriction, or as the
> {item type definition} in the definition of a list, or in the {member type
> definitions} of a union; the explicit values extension, restriction, list
> and union prevent further derivations by extension (to yield a complex
> type) and restriction (to yield a simple type) and use in constructing
> lists and unions respectively.
> Although being able to set final to "extension" for simpleTypes might make
> sense, this possibility doesn't seem to be permitted by section 3.14.2 of
> this spec nor anywhere that I could find in the  PR draft of the Datatype
> spec.  Is it the group's intention to permit final="extension" on
> simpleTypes?

The editors made a late set of fixes to our implementation of the WG's 
decision to allow 'final' on simple types, and did not succeed in
perfectly co-ordinating those fixes.  The WG will have to decide how
to resolve the issue you raise.

  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 Friday, 23 March 2001 05:06:16 UTC

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