W3C home > Mailing lists > Public > public-grddl-comments@w3.org > July to September 2008


From: Dan Connolly <connolly@w3.org>
Date: Fri, 22 Aug 2008 14:23:02 -0500
To: "Booth, David (HP Software - Boston)" <dbooth@hp.com>
Cc: Julian Reschke <julian.reschke@gmx.de>, Ian Hickson <ian@hixie.ch>, Danny Ayers <danny.ayers@gmail.com>, "public-grddl-comments@w3.org" <public-grddl-comments@w3.org>
Message-Id: <1219432982.4554.333.camel@pav.lan>

FYI... just posted...
The details of data in documents; GRDDL, profiles, and HTML5

Submitted by connolly on Fri, 2008-08-22 13:09. :: GRDDL | microformats

GRDDL, a mechanism for putting RDF data in XML/XHTML documents, is
specified mostly at the XPath data model level. Some GRDDL software goes
beyond XML and supports HTML as she are spoke, aka tag soup. HTML 5 is
intended to standardize the connection between tag soup and XPath. The
tidy use case for GRDDL anticipates that using HTML 5 concrete syntax
rather than XHTML 1.x concrete syntax involves no changes at the XPath

But in GRDDL and HTML5, Ian Hickson, editor of HTML 5, advocates
dropping the profile attribute of the HTML head element in favor of
rel="profile" or some such. I dropped by the #microformats channel to
think out loud about this stuff, and Tantek said similarly, "we may
solve this with rel="profile" anyway." The rel-profile topic in the
microformats wiki shows the idea goes pretty far back.

Possibilities I see include:
      * GRDDL implementors add support for rel="profile" along with HTML
        5 concrete syntax
      * GRDDL implementors don't change their code, so people who want
        to use GRDDL with HTML 5 features such as <video> stick to
        XML-wf-happy HTML 5 syntax and they use the head/@profile
        attribute anyway, despite what the HTML 5 spec says.
      * People who want to use GRDDL stick to XHTML 1.x.
      * People who want to put data in their HTML documents use RDFa. 

I don't particularly care for the rel="profile" design, but one should
choose ones battles and I'm not inclined to choose this one. I'm content
for the market to choose.

Dan Connolly, W3C http://www.w3.org/People/Connolly/
gpg D3C2 887B 0F92 6005 C541  0875 0F91 96DE 6E52 C29E
Received on Friday, 22 August 2008 19:23:37 UTC

This archive was generated by hypermail 2.3.1 : Tuesday, 6 January 2015 19:55:03 UTC