- From: Jeni Tennison <jeni@jenitennison.com>
- Date: Mon, 20 Feb 2012 20:10:51 +0000
- To: Shane McCarron <shane@aptest.com>
- Cc: public-rdfa-wg@w3.org
Shane, I think your language requires that *all* required RDFa attributes (ie everything but @href and @src) are permitted on at least one element within the Host Language. What I'm saying is that this requirement is contrary to what Host Language authors probably want from RDFa. Under this wording, a Host Language that purposefully didn't allow @datatype would be non-conformant. But a Host Language could claim conformance with RDFa by defining @datatype on an element that was optional in the content model with big warnings all over the spec for the Host Language saying "don't use this element!" Forcing a Host Language that wanted to use only parts of RDFa to jump through those hoops just makes RDFa annoying to incorporate. A Host Language that doesn't support some attributes means that people using it won't be able to express some RDF using RDFa, but that's the lookout of the Host Language. I think that the conformance section should state that to claim conformance all the RDFa attributes in a Host Language must, when processed to generate RDF, create the RDF defined by the RDFa Core processing, but not say anything about which of the attributes the Host Language needs to incorporate in its content models. Jeni On 20 Feb 2012, at 18:35, Shane McCarron wrote: > In my mind the language I proposed requires that an attribute be supported in a host language. Therefore it would have to be supported on at least one element in order for the host language to be conforming. Do you disagree? > > On 2/20/2012 12:32 PM, Jeni Tennison wrote: >> Shane, >> >> On 20 Feb 2012, at 16:40, Shane McCarron wrote: >>> My suggestion would be that we do two things: >>> >>> 1. Add text in the host language conformance clause that says "The required attributes defined in this specification must be included in the content model of the Host Language. The elements on which these attributes can occur is at the discretion of the Host Language." >> If the elements on which the attributes can occur is at the discretion of the Host Language, then couldn't it decide not to enable any elements to have particular attributes? This might be used by a Host Language that only wanted to support RDFa Lite to limit its support to just the RDFa Lite attributes and not include eg datatype. >> >> So I don't think you can say that Host Languages MUST include all the required attributes in their content models. Obviously they will be better off (in the expressivity of RDFa that they can support) if they do, but I think the strongest you can go is a SHOULD. >> >> Jeni > > -- > Shane McCarron > Managing Director, Applied Testing and Technology, Inc. > +1 763 786 8160 x120 > > > -- Jeni Tennison http://www.jenitennison.com
Received on Monday, 20 February 2012 20:11:20 UTC