- From: Max Voelkel <voelkel@fzi.de>
- Date: Thu, 13 Dec 2007 20:20:25 +0100
- To: Semantic Web <semantic-web@w3.org>
- CC: Michael Rys <mrys@microsoft.com>
Hey semantic web, is there anywhere a general rule *defined* how to expand namespace-prefixed-XML-localnames such as xs:dayTimeDuration into a full (possibly de-referencable) URI? ---------- in http://www.w3.org/TR/xpath-datamodel/#notation it says: ---- The following bindings are assumed. xs: bound to http://www.w3.org/2001/XMLSchema ---- This implies from XML namespace rules that e.g. xs:dayTimeDuration expands to http://www.w3.org/2001/XMLSchemadayTimeDuration which is not a dereferencable URI. Is this correct and intended? For RDF, one uses usually namespace declarations that end with "/" or "#". Michael Rys responds: MR> Namespace prefixes in XML are not concatenated to the names in the way that MR> you do it below. Instead they form a tuple MR> (namespace-uri, local-name). MR> There are different expanded name notations being used, such as MR> {http://www.w3.org/2001/XMLSchema}dayTimeDuration, MR> which is non-dereferencable, or MR> http://www.w3.org/2001/XMLSchema#dayTimeDuration which can be. Thanks a lot for your quick response. Is there a sort of authorative "expanded name notation"? Especially one talking about "#" would be great to read/reference. I have no idea what to Google for. [1] 'defines' (but only in the examples) the rule: <url> = <namespace> + <localname> [1] http://www.w3.org/TR/rdf-primer/ Kind Regards, Max -- Max Völkel voelkel@fzi.de | www.Xam.de office +49 721 96 54-854 mobile +49 171 83 59 678 -- FZI Forschungszentrum Informatik an der Universität Karlsruhe Haid-und-Neu-Str. 10-14, D-76131 Karlsruhe Tel.: +49-721-9654-0, Fax: +49-721-9654-959 Stiftung des bürgerlichen Rechts, Az: 14-0563.1 Regierungspräsidium Karlsruhe. Vorstand: Prof. Dr.-Ing. Rüdiger Dillmann, Dipl. Wi.-Ing. Michael Flor Prof. Dr. Dr.-Ing. Jivka Ovtcharova, Prof. Dr. rer. nat. Rudi Studer Vorsitzender des Kuratoriums: Ministerialdirigent Günther Leßnerkraus
Received on Thursday, 13 December 2007 19:20:43 UTC