- From: Richard Cyganiak <richard.cyganiak@deri.org>
- Date: Wed, 25 Aug 2010 17:11:10 +0100
- To: Ivan Herman <ivan@w3.org>
- Cc: W3C RDFa WG <public-rdfa-wg@w3.org>
On 24 Aug 2010, at 13:32, Ivan Herman wrote: > Modeling wise it should be > > <http://example.com/my-host-language#> rdfa:vocabulary > "True"^^xsd:boolean . > > But I was not sure whether it is worth the trouble to add that > explicit request in the processing rules... Oh, I see. I think the processing is fine as is, but the spec should somehow indicate that a boolean literal is supposed to be used as the object, so that the question doesn't arise for a reader. One way of doing this would be to have an example with rdfa:vocab in Section 2.2, and link to it from the passage in the Profiles section. >>>> 10. There should be a sub-section on default profiles. >>> >>> I added instead a reference to section 6 where this is described. >> >> I see a reference for default vocabulary URI, but what I meant was >> profiles (incl. term and prefix mappings) pre-defined by the host >> language. > > But this can be used for other purposes as well, not only for the > host language thingy! Essentially, an rdf:vocabulary triplet is > equivalent to a @vocab attribute used on the same node. That is why > I have put the reference to section 6 My request for a sub-section on default profiles is not specifically about @vocab/rdfa:vocab. What I meant is that I'd like to see a single subsection where one can read how default profiles work. Currently this information is scattered throughout 4.2, 7.2, 7.5 and 9, under headlines that mostly have nothing to do with “profiles”. This makes it hard to understand the mechanism. (I certainly didn't succeed, as you have seen throughout this thread!) So this is an editorial request to add something like this as a subsection of Section 9: == 9.1 Default profile documents == Host languages MAY define a '''default profile document'''. Its URI is known as the host language's '''profile URI'''. Any prefix mappings, term mappings, and default vocabulary URIs defined in the default profile document are used as initial values for the evaluation context (see 7.2). RDFa processors MAY embed, cache or retrieve the default profile document of supported host languages. Host languages MUST NOT change the prefix mappings, term mappings or default vocabulary URI defined in their profile document without changing the profile URI. (Collecting the information for writing the above, I notice that it's a bit unclear wether default profiles can define *prefix* mappings; I read sections 4.2 and 7.2 as saying “no”, and section 7.5 as saying “yes”. One more reason for having a dedicated section for this!) Best, Richard > > Ivan > > >> Best, >> Richard >> >> >> >>> >>> Ivan >>> >>>> >>>> Best, >>>> Richard >>>> >>>>> [4] http://www.w3.org/TR/2010/WD-rdfa-core-20100803/#s_profiles >>>>> [5] http://www.w3.org/2010/02/rdfa/wiki/ProfileSpec >>>> >>> >>> >>> ---- >>> Ivan Herman, W3C Semantic Web Activity Lead >>> Home: http://www.w3.org/People/Ivan/ >>> mobile: +31-641044153 >>> PGP Key: http://www.ivan-herman.net/pgpkey.html >>> FOAF: http://www.ivan-herman.net/foaf.rdf >>> >>> >>> >>> >>> >> >> -- >> Linked Data Technologist • Linked Data Research Centre >> Digital Enterprise Research Institute (DERI), NUI Galway, Ireland >> http://linkeddata.deri.ie/ >> skype:richard.cyganiak >> tel:+353-91-49-5711 >> > > > ---- > Ivan Herman, W3C Semantic Web Activity Lead > Home: http://www.w3.org/People/Ivan/ > mobile: +31-641044153 > PGP Key: http://www.ivan-herman.net/pgpkey.html > FOAF: http://www.ivan-herman.net/foaf.rdf > > > > > -- Linked Data Technologist • Linked Data Research Centre Digital Enterprise Research Institute (DERI), NUI Galway, Ireland http://linkeddata.deri.ie/ skype:richard.cyganiak tel:+353-91-49-5711
Received on Wednesday, 25 August 2010 16:11:45 UTC