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>-----Message d'origine----- >De : Jonathan Borden [mailto:jborden@m...] >Envoyé : vendredi 18 janvier 2002 16:00 >À : Nicolas LEHUEN; 'Paul T'; 'Bullard, Claude L (Len)'; 'Leigh Dodds'; >xml-dev@l... >Objet : Re: RDDL (was RE: Negotiate Out The Noise) > > >Nicholas, > > >> >But anyway, I think there are two problems that RDDL try to >> >solve in the >> >same document and that should be separated : resource linking and >> >human-readable documentation. >> >> And once again, RDDL try to solve it the wrong way, by its >assumption that >> resource description and linking has something to do with namespaces. > >Don't get caught up in the term "Resource". I am sorry that it >is used, but >so be it. I am not sure that the term "Resource" has any real >meaning, but >it is thrown about on the Web. Note that the RFC 2396 (URI) >usage of the >term "Resource" means anything that has a URI. Namespaces are >named using >URIs hence the term "Resource". There is nothing other to read >into this. >RDDL does not intend to be RDF. OK. Following RFC 2396, namespaces are resources because they have an URI. But resources aren't namespace. Hence, RDDL should be named NDL. >>If >> RDDL was NDL (Namespace Description Language), there would >be no problem. >> You would describe namespaces and link to resources to those >namespaces. >But >> as I wrote earlier, I don't think that RDDL is appropriate to handle >> resources that contain mixed namespaces. >> > >What do you mean by "appropriate"? If somewhat writes a >software program in >Java that processes mixed namespaces, would that be >"appropriate"? Either it >can or cannot be done. Henry has shown that it can be done. Simple. >"Appropriate"ness has no bearing. What is the real issue? When you write about Henry [Thompson], do you refer to this : http://lists.w3.org/Archives/Public/xmlschema-dev/2001Jun/0048.html ? How is this related to mixing different namespaces in the same document ? All I understand is that instead of directly providing the schema URL for validation, you can provide a RDDL URL (e.g. the namespace URL for which you expect a schema), and then XSV fetches the RDDL document and from there a XML Schema document according to the following rule : "The first <rddl:resource> whose xlink:role="http://www.w3.org/2001/XMLSchema" will be used. Support for RDDL at the end of the 'schemaLocation' attribute of <xs:include> and <xs:import> will follow shortly." The status page : http://www.ltg.ed.ac.uk/~ht/xsv-status.html only mentions "Support RDDL at e.g. namespace URIs ". So how do you relate this to mixed namespaces in the same document ? Regards, Nicolas
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