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Extending xs:anyType is certainly allowed -- it's a complex type
definition, so it can be extended. You're right that extending a
mixed type definition with a non-mixed one is an error, and XSV finds
it:
<schemaError char="4" line="3" phase="instance"
resource="extbad.xsd">
attempt to extend a mixed basetype
into an unmixed type or vice versa (None, anyType)
</schemaError>
Note you have to run XSV locally with the -i switch to get it to check
a schema document thoroughly -- running the web form on a schema
document simply confirms that it is schema-valid per the sForS, but
doesn't check the constraints written in to the REC.
ht
--
Henry S. Thompson, HCRC Language Technology Group, University of Edinburgh
Half-time member of W3C Team
2 Buccleuch Place, Edinburgh EH8 9LW, SCOTLAND -- (44) 131 650-4440
Fax: (44) 131 650-4587, e-mail: ht@c...
URL: http://www.ltg.ed.ac.uk/~ht/
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