- From: Henry S. Thompson <ht@cogsci.ed.ac.uk>
- Date: 30 Nov 2000 12:17:23 +0000
- To: "David E. Cleary" <davec@progress.com>
- Cc: <xmlschema-dev@w3.org>
"David E. Cleary" <davec@progress.com> writes:
> This is using the April 7 syntax:
>
> <element name = "XMI.difference">
> <complexType content = "elementOnly">
> <choice minOccurs = "0" maxOccurs = "unbounded">
> <element ref = "XMI.difference"/>
> <element ref = "XMI.delete"/>
> <element ref = "XMI.add"/>
> <element ref = "XMI.replace"/>
> </choice>
> <attributeGroup ref = "XMI.element.att"/>
> <attributeGroup ref = "XMI.link.att"/>
> </complexType>
> </element>
>
> This definition was created by XML Authority by converting a DTD. It has an
> element declaration that includes a reference to itself. This causes our
> tool to loop until it blows up. The April 7 XSV doesn't complain. Is it
> legal to do this?
It's fine. It reconstructs
<!ELEMENT x (x|y|z)>
which it would be very odd to rule out, to say nothing of violating
our Requirements document.
ht
--
Henry S. Thompson, HCRC Language Technology Group, University of Edinburgh
W3C Fellow 1999--2001, 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@cogsci.ed.ac.uk
URL: http://www.ltg.ed.ac.uk/~ht/
Received on Thursday, 30 November 2000 07:17:31 UTC