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Re: Wrapped around the axle: Refining and extending structures ac ross namespaces

From: Jeni Tennison <jeni@jenitennison.com>
Date: Thu, 20 Dec 2001 15:39:53 +0000
Message-ID: <6713489036.20011220153953@jenitennison.com>
To: Mark Feblowitz <mfeblowitz@frictionless.com>
CC: "Xmlschema-Dev (E-mail)" <xmlschema-dev@w3.org>
Hi Mark,

> We have been using the second approach, and it is very elegant. The
> ability to target plug-in content without disturbing the surrounding
> context is very cool. It does, however, get very complicated when
> the type hierarchy gets deeper. That's also when restriction and
> extension come into conflict, because substitution groups want their
> descendants to be restrictions.

I think that the members of substitution groups' types only need to be
*derived* from the type of the head of the substitution group, not
necessarily restrictions?



Jeni Tennison
Received on Thursday, 20 December 2001 11:08:10 UTC

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