Re: XML Schema question: A <xs:choice> equivalent for attributes?

[Eric van der Vlist <vdv@dyomedea.com>]

Eddie Robertsson wrote:
> 
> Unfortunately you can't do this with W3C XML Schema. As I see it you have two
> options:
> 
> 1) Change to a different schema dialect (I think RELAX-NG support this
> functionality)
> 2) Express you co-constraint using an embedded schematron rule

Since yesterday, we need add to this list of options the elegant
workaround using abstract datatypes [1] proposed by Jeni.
 
[1] http://lists.xml.org/archives/xml-dev/200107/msg00038.html

Here, the xsi:type attribute in the instance document is giving to the
W3C XML Schema validator enough information to determine which case we
are handling.

Eric

> /Eddie
-- 
See you at XTech in San Diego.
             http://conferences.oreillynet.com/cs/os2001/view/e_spkr/790
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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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