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Re: implementing redefinitions

From: Henry S. Thompson <ht@inf.ed.ac.uk>
Date: Wed, 17 Aug 2005 14:00:49 +0100
To: "Michael Kay" <mike@saxonica.com>
Cc: "'Kasimier Buchcik'" <kbuchcik@4commerce.de>, "'XML-SCHEMA'" <xmlschema-dev@w3.org>
Message-ID: <f5bek8sen0e.fsf@erasmus.inf.ed.ac.uk>

Hash: SHA1

Michael Kay" writes:

> I'm struggling with this a bit in Saxon. I think the rule I have to adopt is
> that once a schema component has been used for validating documents that
> exist in the current "environment" (that is, whose PSVIs I can reach),
> redefinition of that schema component is banned.

On an episode-by-episode basis, this makes sense to me, and I think is
covered at least in many cases by the "no new namespaces once we
start" provision.

But across multiple episodes, I don't think the spec. licenses this --
each episode should be treated completely independently.

So, the obvious question -- how can their be more than one document in
the "current 'environment'"?

- -- 
 Henry S. Thompson, HCRC Language Technology Group, University of Edinburgh
                     Half-time member of W3C Team
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            Fax: (44) 131 650-4587, e-mail: ht@inf.ed.ac.uk
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Received on Wednesday, 17 August 2005 13:00:59 UTC

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