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Re: infinite loop

From: Jeff Rafter <jeffrafter@defined.net>
Date: Thu, 9 Jan 2003 08:49:07 -0600
Message-ID: <050401c2b7ee$438c1ab0$54f0d90c@c1980223a>
To: "Jeni Tennison" <jeni@jenitennison.com>, "oliver fodor" <fodor@itc.it>
Cc: <xmlschema-dev@w3.org>

> There's nothing to stop you from
> creating these schemas, though of course you won't be able to write
> any documents that are valid against it.

Does the Particle Emptiable constraint [1]  in 3.9.6 come into play here? It
seems that the declaration is in fact declaring particles and the constraint
says that it must be emptiable. The minimum effective total range [2] for
Jeni's example is > 0. the Particle Emptiable is explicitly referenced from
the element validity assessment section for mixed declarations (which
Oliver's example was...) but as Jeni pointed out his declaration was
emptiable because of the minOccurs = 0 on the choice. Now, that said, I
don't know of any editor that enforces that rule...

[1] http://www.w3.org/TR/xmlschema-1/#cos-group-emptiable
[2,3] http://www.w3.org/TR/xmlschema-1/#cos-seq-range

All the best,
Jeff Rafter
Defined Systems
XML Development and Developer Web Hosting
Received on Thursday, 9 January 2003 09:45:40 UTC

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