- From: Henry S. Thompson <ht@inf.ed.ac.uk>
- Date: Fri, 04 Jun 2004 10:15:24 +0100
- To: "Xan Gregg" <Xan.Gregg@jmp.com>
- Cc: <xmlschema-dev@w3.org>
"Xan Gregg" <Xan.Gregg@jmp.com> writes:
>> So, no keyref selections, no key selections, no problem.
>
> Hmmm. Then identity constraints could be used to enforce the
> HTML requirement that <A> elements not be nested. Just define
> a key constraint for <A> with select=".//A" and
> field="@SomeInvalidAttributeName". If there's no nested <A>,
> then there's no error. If there is a nested <A>, there's
> an error whether it does or doesn't have the invalid attribute.
>
> Just an idea.
Nifty one!
ht
--
Henry S. Thompson, HCRC Language Technology Group, University of Edinburgh
Half-time member of W3C Team
2 Buccleuch Place, Edinburgh EH8 9LW, SCOTLAND -- (44) 131 650-4440
Fax: (44) 131 650-4587, e-mail: ht@inf.ed.ac.uk
URL: http://www.ltg.ed.ac.uk/~ht/
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Received on Friday, 4 June 2004 05:15:26 UTC