- From: Henry S. Thompson <ht@cogsci.ed.ac.uk>
- Date: 11 Mar 2000 22:12:39 +0000
- To: Qiong Chen <qiong@cs.washington.edu>
- Cc: www-xml-schema-comments@w3.org
Qiong Chen <qiong@cs.washington.edu> writes:
> Dear Henry Thompson,
>
> another problem is raised . If we have two groups that both have elements with
> the same name in them, will there be any conflict ? Accroding to the W3C's
> document, there should be no conflict if elements in the different group have
> the same name. But pls see:
>
> <group name="A">
> <element name="E" type="string" minOccurs="0" />
> </group>
>
> <group name="B">
> <element name="E" type="string" minOccurs="0" />
> </group>
>
> <complexType name="C">
> <group ref="A"/>
> <group ref="B"/>
> </complexType>
The result is
<complexType name="C">
<element name="E" type="string" minOccurs="0" />
<element name="E" type="string" minOccurs="0" />
</complexType>
which is an ambiguous content model, so ruled out.
model groups are _not_ an inheritance mechanism, simply a means of
structured reuse of element declarations.
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 Saturday, 11 March 2000 17:12:44 UTC