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[XML-DEV Mailing List Archive Home] [By Thread] [By Date] [Recent Entries] [Reply To This Message] Re: Re: determining ID-ness in XML
 From: "James Clark" <jjc@j...> > The problem that xml:id is not completely solving the problem, at least as > I see it. Why do we need a complete solution? We need to have broad solutions apppropriate for different classes of users. > Overall xml:id is pretty intrusive. If it were couple with the rule that unknown entity references are resolved against the ISO standard entity sets (i.e. build the ISO sets into XML), then it would allow DTD-less documents, suitable for lightweight, well-known and informal systems. That would let us move to three forms of XML: 1) Instance-only XML (=WF XML - DTD + xml:id + xmlns + ISO entities + xml:base + xml:include + xlink) 2) Classic XML (= Valid XML + namespaces) 3) PSVI-convertable XML (e.g. XML + XML Schemas) I think that would be a pretty healthy split. I believe most users of XML would head towards Instance-only XML, especially since it still could be validated (by RELAX, by XML Schema, by Schematron). The database and tools-making companies would continue to take the PSVI-based XML track, I would guess. > An alternative would be to have an attribute that declares the name of the > attribute that is an ID attribute, say xml:idatt. To make this useable, > xml:idatt would be inherited. By the time we factor in inheritence, we may as well have a schema language. I think the answer to the "problem" should come architecturally, rather than solving small problems. The architectural solution is IMHO to have a clear roadmap for different kinds of XML, and to avoid one-size-fits-all-ism. Cheers Rick Jelliffe 
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