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Re: Schema Namespace name, schemaLocation, and Schema V ersi

• To: "Dare Obasanjo" <dareo@m...>
• Subject: Re: Schema Namespace name, schemaLocation, and Schema V ersioning
• From: ht@c... (Henry S. Thompson)
• Date: 18 Jul 2002 20:27:36 +0100
• Cc: "Dare Obasanjo" <kpako@y...>, "David Carlisle" <davidc@n...>, <jeni@j...>, <xml-dev@l...>
• In-reply-to: <8BD7226E07DDFF49AF5EF4030ACE0B7E06621DF0@r...>
• References: <8BD7226E07DDFF49AF5EF4030ACE0B7E06621DF0@r...>
• User-agent: Gnus/5.0808 (Gnus v5.8.8) XEmacs/21.4 (Honest Recruiter)

"Dare Obasanjo" <dareo@m...> writes:

> > As far as the Schema WG is concerned, we've tried _very_ hard 
> > not to do that, and your representatives on the WG have not 
> > identified any cases of this happening as far as I know -- 
> > please let the WG know ASAP which errata rendered previously 
> > valid schemas or instances invalid!
> 
> That's interesting given that I've mentioned on this very list about the

This is not the official official comments list -- I read it when I
can, but I don't always manage to read every post -- _please_ post
issues with the RECs or the errata to www-xml-schema-comments@w...
as well as here.

> non-breaking change that was the gMonth errata[0] which invalidated
  xxx

> previously valid schemata like the one below 
> 
> <xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema">
> 
>  <xs:simpleType name="NotDecember">
>   <xs:restriction base="xs:gMonth">
>    <xs:maxInclusive value="--11--" />
>   </xs:restriction>
>  </xs:simpleType>
> 
> </xs:schema>
> 
> I'd be very surprised if our standards reps have not brought this up
> with the W3C XML Schema working group since they are well aware of this
> issue. 

This is a corner case, hard to be sure about -- the REC was actually
contradictory as it stood, with one clause specifying one form, and
another clause a conflicting form.  In that case, there are _no_
non-breaking fixes, at least in principle, and we went with what we
believed was the majority of existing usage in practice -- are you
aware of any _deployed_ schemas using the --MM-- form?

On balance I support the judgement call that this change should not
have resulted in a namespace change -- the REC was (by accident)
contradictory, we agreed what we meant, we've brought the REC into
line with that agreement.

ht
-- 
  Henry S. Thompson, HCRC Language Technology Group, University of Edinburgh
          W3C Fellow 1999--2002, 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@c...
		     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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  • RE: Schema Namespace name, schemaLocation, and Schema V ersioning
    • From: "Dare Obasanjo" <dareo@m...>

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