- From: Eric van der Vlist <vdv@dyomedea.com>
- Date: Wed, 20 Mar 2002 13:17:42 +0100
- To: Bruno Chatel <bcha@chadocs.net>
- Cc: xmlschema-dev@w3.org, patt <pattar@tireme.fr>, bcha@chadocs.com
Hi,
Bruno Chatel wrote:
> Hello,
>
> I would like to know if the following compleType defintion is allowed:
>
> <xs:complexType name="unit">
> <xs:simpleContent>
> <xs:extension base="xs:integer"/>
> </xs:simpleContent>
> </xs:complexType>
Yes, why not ;=) ?
> It seems to be equivalent than :
>
> <xs:simpleType name="unit">
> <xs:restriction base="xs:integer"/>
> <xs:simpleType>
Not really, simple and complex types are very different beasts (despite
similarities which are IMO exagerated in the W3C Recommendation) and the
kind of derivations which you will be able to do on those types is
different.
> In fact, I want to define an "interface" of the unit type in order to redefine it :
> (with the first unit complexType def)
>
> <xs:redefine schemaLocation="unit.xsd">
> <xs:complexType name="unit">
> <xs:simpleContent>
> <xs:extension base="unit">
> <xs:attribute name="otherVal" type="xs:integer" use="required"/>
> </xs:extension>
> </xs:simpleContent>
> </xs:complexType>
> </xs:redefine>
>
> This redefinition seems to be forbiden (xsv error : Basing a type on itself is
> forbidden).
> This error is raised only when I try to redefine a complexType with a simpleContent.
> A redefine of a complexType (with a complexContent) using the same name seems
> to be correct ...
I would *bet* for a bug since the rec states that:
Within the [children], each <simpleType> must have a <restriction> among
its [children] and each <complexType> must have a restriction or
extension among its grand-[children] the ·actual value· of whose base
[attribute] must be the same as the ·actual value· of its own name
attribute plus target namespace;
without mentioning any restriction for simple contents.
Eric
>
> Thanks in advance
>
> Regards
>
>
> -- bruno --
> Bruno Chatel
> Tel : (+33)[0] 4 96 11 14 57
> Email : bcha@chadocs.com
> http://www.chadocs.com
> ----------------------------------------
--
See you in Paris.
http://www.afnet.fr/afnet/net200x/programme.html#T9
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Eric van der Vlist http://xmlfr.org http://dyomedea.com
http://xsltunit.org http://4xt.org http://examplotron.org
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Received on Wednesday, 20 March 2002 07:18:16 UTC