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Looks like I spoke too fast on this. I was assuming Elliotte meant that
each RDDL document pointed to a schema for the entire document, but now
realize he means that each RDDL document points to a namespace-specific
schema that can be used to validate a document fragment. You then
compose the validations of each fragment to determine validation of the
whole document.
With respect to Elliotte's last point (whether schema languages support
this) I thought that XML Schemas did.
-- Ron
Ronald Bourret wrote:
>
> Elliotte Rusty Harold wrote:
> > >I'm glad you write that. So now, do you agree that RDDL cannot be used to
> > >find the schemas of XML documents that contain a mix of namespaces, despite
> > >the fact that those schemas exist (there is a DTD for RDDL, WAP 2.0, etc.) ?
> >
> > No, it can be used for this provided each element is in a namespace,
>
> Fair enough.
>
> > each such namespace URI has a RDDL document
>
> Also fair enough.
>
> > including a link to a relevant schema,
>
> This won't happen. The RDDL document for XHTML cannot reasonably be
> expected to contain pointers to all the schemas that use XHTML.
>
> > and the schema language and the schemas themselves
> > are designed to allow these sorts of multiple namespace documents.
> > (The last point is the biggest obstacle in practice.)
>
> I don't see why the last point is the obstacle. I thought that all
> schema languages already allowed this. Or am I missing something here?
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