"Andrew Welch" <andrew.j.welch@gmail.com> wrote on 09/22/2008 10:38:22 AM:
> > <xs:element name='category' type='categoryType' />
> >
> > <xs:complexType name='categoryType' abstract='true'/>
> >
> > <xs:complexType name='privacy'>
> > <xs:complexContent>
> > <xs:extension base='categoryType'>
>
> Rather than extend from an abstract type, I think it's better to
> restrict from a loose type... I think it benefits the validator in
> some way that I can't remember (that's suitably vague and
> non-committal :) Hopefully someone who knows can back that up.
>
> > So, my answer to Ian is you can't exactly do what you want using XSD
>
> ...in XSD 1.0. It's perfectly possible 1.1 isn't it?
>
> I think the XSD 1.1 license for Saxon is 30 quid, that's a round of
> drinks in London....
If you're feeling adventurous you could also try out the XML Schema 1.1 development branch [1] of Xerces. Support for xs:alternative was just recently implemented there.
> --
> Andrew Welch
> http://andrewjwelch.com
> Kernow: http://kernowforsaxon.sf.net/
[1] http://svn.apache.org/viewvc/xerces/java/branches/xml-schema-1.1-dev/
Michael Glavassevich
XML Parser Development
IBM Toronto Lab
E-mail: mrglavas@ca.ibm.com
E-mail: mrglavas@apache.org