[XML-DEV Mailing List Archive Home] [By Thread] [By Date] [Recent Entries] [Reply To This Message] (Off-topic) Re: Type-assignment (was Re: Are we losing out because ofgr
From: James Clark <jjc@j...> > I think I > can live with fairly trivial type-assignment (as in W3C's XML Schemas), > which allows type assignment to be done in a single, streaming pass, but XML-DEVers may be interested that for XML Schemas there was a model sometimes floating around in WG discussions that went something like this psuedo-code schema-assess(element e) { if not(exists(e.namespace.schema)) e.schema=fetch-schema(e.namespace)); e.psvi.typeInfo = assess-type(e); for-each(e.child e') schema-assess(e'); e.psvi.validationInfo = validate(e); } in other words type assessment occurs on the way down (e.g., at the start tag) and validity assessment occurs on the way up (e.g., at the end-tag). However, this is not something that needs to be in the XML Schemas spec, because there is no reason to constrain people to particular implementation techniques. Cheers Rick Jelliffe n.b. psvi is "post schema-validation infoset"
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