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XML-1.0 is dead! long live XML-1.0+Namespaced-DTD! [was Re: li

• To: Jonathan Borden <jborden@m...>
• Subject: XML-1.0 is dead! long live XML-1.0+Namespaced-DTD! [was Re: life support for DTDs?
• From: james anderson <james.anderson@s...>
• Date: Fri, 01 Feb 2002 16:37:00 +0100
• Cc: The Deviants <xml-dev@l...>
• Organization: nil
• References: <6D54B6A5DCF9D311971600D0B74758C101441B66@a...> <098701c1aa69$4d4d3cc0$0a2e249b@n...> <010801c1aa7d$f828ec70$4bc8a8c0@A...> <022301c1ab13$e92aa920$0301a8c0@n...> <01bf01c1ab29$bf03f140$4bc8a8c0@A...> <0ac701c1ab29$bb6064b0$0a2e249b@n...>
• Reply-to: james.anderson@s...

One doesn't need to change anything.

A DTD can be interpreted to provide the subset of the information set
permitted by REC-xmls-1-20010502, Appendix D.

As such a DTD is a permissible alternative to the XML-encoding for schemas.
Which means it can, as it stands, be used as the basis to generate the
PSVI for a subset of documents. Those which don't entail models or data
types which cannot be expressed in a DTD.

CL-XML does that for namespace aware DTDs. Actually, it doesn't care
whether namespaces are specified in the document or not. In a documents
without namespaces all names are simply in the infamous "null" namespace.

The resulting post-validation document model analogous to the PSVI.* 
Which makes it a "minimally conformant schema aware processor". At least
according to REC-xmls-1-20010502, 2.4. Hey.

...

[* It doesn't retain the specified details about the validation results
and some of the information would need to be generated from the model,
but these issues are not to the point.]

Jonathan Borden wrote:
> 
> ...
>
> Since it doesn't change the syntax, nor rules of XML 1.0, this _could_ be
> done perhaps as an update to XMLNS, but without modifying XML 1.0.
> 
> Simply:
> 
> Define "Namespace Valid" as distinct from "Valid" just as XML Schema defines
> "Schema Valid" without changing XML 1.0
> 
> That is to say, a proper "non validating parser" would be enabled to signal
> "namespace validity", (since DTDs still deal with entities etc, I am not
> sure this could be defined as a property of the 'infoset' but rather the XML
> itself)
> 
> I don't see a problem, what am I missing?
> 
> Jonathan
>

• References:
  • Re: life support for DTDs? was RE: misprocessing namespaces)
    • From: "Jonathan Borden" <jborden@m...>
  • Re: life support for DTDs? was RE: misprocessing namespaces)
    • From: "Rick Jelliffe" <ricko@a...>
  • Re: life support for DTDs? was RE: misprocessing namespaces)
    • From: "Jonathan Borden" <jborden@m...>

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