- From: Dan Brickley <danbri@w3.org>
- Date: 2005年7月19日 10:48:23 +0100
- To: Arjohn Kampman <arjohn.kampman@aduna.biz>
- Cc: Jeremy Carroll <jjc@hplb.hpl.hp.com>, semantic-web@w3.org, dave.beckett@bristol.ac.uk
- Message-ID: <42DCCC67.909@w3.org>
Arjohn Kampman wrote: > Dan Brickley wrote: > >> RDF/XML parser owners: see below for a little test case that might >> flush out a >> potential (if minor; this idiom isn't widely used) interop problem. > > > Rio[1] also failed this test. A fix will be included in the 1.0.5 > release. Thanks for reporting this. > Thanks for the quick fix :) > Our new implementation resolves relative base URIs against the base URI > of the context. If the "root" xml:base directive contains a relative URI > then it is resolved against the document URI. I guess this is the way to > do it? I'm not sure. Wondering if we might use the ESW Wiki to collect up some more test-cases? >>>> <?xml version="1.0"?> >>>> <rdf:RDF xml:base="http://example.org/" >>>> xmlns:rdf="http://www.w3.org/1999/02/22- >>>> rdf-syntax-ns#" >>>> xmlns:dc="http://purl.org/dc/elements/1.1/"> >>>> <rdf:Description rdf:about="http://www.w3.org/" xml:base="test1/"> >>>> <dc:title>World Wide Web Consortium</dc:title> >>>> <dc:source rdf:resource="test2/"/> >>>> <dc:relation rdf:resource=""/> >>>> </rdf:Description> >>>> </rdf:RDF> >>> > [...] > >>>> ps. the dc:relation thing is in there because >>>> http://lists.w3.org/Archives/Public/www-rdf-comments/2002JanMar/0234.html >>>> via >>>> http://www.w3.org/2000/03/rdf-tracking/#rdfms-xml-base tells me >>>> that "" self-refs aren't >>>> affected by xml:base. Not sure if that decision got reverted. >>> > > Note that the response to this issue[2] states: > "The WG decided that RDF will convert such references to absolute > URI's and will take in scope xml:base attributes into account in such > conversions." > > The revised RDF/XML syntax spec[3] is in agreement with this: > "In RDF/XML, a fragment identifier is transformed into a RDF URI > reference by appending the fragment identifier to the in-scope base > URI. The empty string is transformed into an RDF URI reference by > substituting the in-scope base URI." > > Guess this means that self-refs /are/ affected by xml:base directives. You're right (Dave also pointed this out, I should've trimmed my original comment). I didn't read ahead carefully enough in that message! I wonder how many other parsers are affected... cheers, Dan > -- > Arjohn > > > [1] http://www.openrdf.org/ > [2] > http://lists.w3.org/Archives/Public/www-rdf-comments/2002JanMar/0234.html > [3] http://www.w3.org/TR/rdf-syntax-grammar/#section-baseURIs
Received on Tuesday, 19 July 2005 09:48:27 UTC