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Re: XHTML-RDFa draft made public

From: Ivan Herman <ivan@w3.org>
Date: Wed, 11 Apr 2007 10:04:38 +0200
Message-ID: <461C9696.7050801@w3.org>
To: Shane McCarron <shane@aptest.com>
Cc: public-rdf-in-xhtml-tf@w3.org, HTML WG <w3c-html-wg@w3.org>
Dear all,

my apologies for chiming in here, although I am not part of the HTML WG.
But I do follow the RDFa work very closely....

I am not sure what the role of this document really is. *If* it is (part
of) the technical specification of RDFa, then I am a bit surprised by
some facts. For example:

- Section 3: the role of the hreflang, hrefmedia, hreftype attributes.
These have never been discussed in terms of RDFa lately, I am not sure
what their meaning is in terms of RDF (and I am not sure they should
have any meaning!). [To avoid any misunderstandings: in abstract these
do make sense, it is the context that bothers me!]

- Section 4: some of the examples listed here seem to go beyond the
current content model of HTML, namely the fact that a meta element can
have a child, that it refers to the element being the child of 'link'.
It also refers to a list of predefined values in the XHTML2 namespace.
The current direction of RDFa is *not* to bind it to XHTML2; this is a
crucial point in the deployment strategy of RDFa

- I also have the impression that we got to a nice equilibrium point on
the literal datatype discussion on the mailing list (see the thread
starting at [1]), but this is not reflected in the document (maybe I
have just missed it).

*If* the goal is to have a meta module for XHTML2, that is fine with me
and I am not at my place to make any comments (although the document
should make it very clear the context of this document). But if the goal
is to issue an *XHTML1* module for RDFa with the minimal possible
changes and with no dependency on XHTML2 then I fear this document will
raise some eyebrows... My concern is, again, the wide adoption of RDFa
ASAP, that is why I allowed myself to chime in.




Shane McCarron wrote:
> As per my implied action item from earlier today, note that an Editor's
> Draft of the xhtml-rdfa module document is available at
> http://www.w3.org/MarkUp/2007/ED-xhtml-rdfa-20070402/
> This draft is not yet connected to the main MarkUp page, nor to the new
> Drafts area we are setting up.  Once established, I will send out a
> subsequent note.
> Finally, note that if you create documents using the example markup
> language as defined in Appendix C, using the DOCTYPE with public and
> system identifiers as specified therein:
>    <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML+RDFa 1.0//EN"
>                          "http://www.w3.org/MarkUp/DTD/xhtml+rdfa-1.dtd">
> such documents can validate using the W3C validation service
> automatically.  I trust this is what people were looking for.
> I look forward to feedback on this early draft!


Ivan Herman, W3C Semantic Web Activity Lead
URL: http://www.w3.org/People/Ivan/
PGP Key: http://www.cwi.nl/%7Eivan/AboutMe/pgpkey.html
FOAF: http://www.ivan-herman.net/foaf.rdf

Received on Wednesday, 11 April 2007 08:04:26 UTC

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