Namespaces and DTDs
rbourret at ito.tu-darmstadt.de
Tue Mar 9 17:03:20 GMT 1999
Richard L. Goerwitz wrote:
> Maybe I misunderstand, but as far as I can see, namespaces won't help
> you, either. Why? Because even if you can refer to, say, your two TITLE
> elements by different prefixes, you'll still have to declare the prefixed
> elements in the DTD as if they were atomic element names.
> Namespaces, in other words, don't solve your problem. They may make it
> worse, in fact, because you have to know what prefixes you are going to
> declare in a given document to be able to rewrite your DTD to work with
> that document.
> There was a furor two or three months ago on this list about namespaces
> breaking validation. That furor died down when the namespace spec became
> an official recommendation (a done deal, in other words).
You are correct. In today's environment (namespace-unaware parsers and no
way to associate prefixes and URIs in the DTD), you must use the same
prefixes in the DTD and the document for validation to work. I didn't
state this because it was stated repeatedly during the aforementioned
furor, which I sincerely hope this thread won't reignite.
-- Ron Bourret
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