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Re: Last Call Response to ISSUE-73: RDFa Profile management

From: Shane McCarron <shane@aptest.com>
Date: Mon, 28 Feb 2011 11:28:06 -0600
Message-ID: <4D6BDB26.8020204@aptest.com>
To: Manu Sporny <msporny@digitalbazaar.com>
CC: RDFa WG <public-rdfa-wg@w3.org>, Harry Halpin <hhalpin@w3.org>
I am fine with this approach.

On 2/28/2011 11:17 AM, Manu Sporny wrote:
> On 02/27/11 18:47, Shane McCarron wrote:
>>> 1. Always load the RDFa Core 1.1 default profile first.
>>> 2. If an "application/xhtml+xml" or "text/html" MIMEType is detected,
>>>     load the HTML+RDFa 1.1 default profile.
>>> Step #1 will be placed into the RDFa Core 1.1 specification. Step #2
>>> will be placed into the (X)HTML Host Language specifications.
>> I actually DISAGREE with this.  I think it is more sensible to have the
>> processor determine the media type, then act accordingly.  In fact, we
>> had already introduced text that supports that model [1]:
> Apologies - the text I wrote above was confusing at best. During the
> telecon, I believe that we agreed to a general approach but left some of
> the implementation details a bit vague with the assumption that we would
> sort them out at a later point in time.
> Let me attempt to clarify what I believe would work for everyone by
> asserting a few things:
>   * It is ultimately the Host Language's decision on which Default
>     Profiles to load.
>   * Which profiles to load will be determined by the MIMEType of the
>     document being processed if it is known. If the MIMEType is not
>     known, XML+RDFa will be assumed.
>   * Before processing, XML+RDFa will load the ".../rdfa-1.1" Default
>     Profile before processing.
>   * Before processing, (X)HTML+RDFa 1.1 will load the ".../rdfa-1.1"
>     Default Profile first, and then the ".../html-rdfa-1.1" Default
>     Profile second.
> Since we are currently writing the Host Language documents for XML,
> HTML4, HTML5, and XHTML1 - we don't have to worry about potential
> divergence between those languages.
> It is up to the ODF, ePub, and SVG folks to figure out if this strategy
> works for them - which is how it should be. We shouldn't assume that we
> know what is best for any other Host Language with which we're not
> intimately familiar.
> There is a concern over multiple HTTP requests to get two profiles vs.
> one, but I would expect that implementations will take care to cache
> this sort of data.
> I'll add this to the agenda for this week, just so we can make sure
> there is consensus on this. If anybody disagrees with this approach,
> please speak up now.
> -- manu

Shane P. McCarron                          Phone: +1 763 786-8160 x120
Managing Director                            Fax: +1 763 786-8180
ApTest Minnesota                            Inet: shane@aptest.com
Received on Monday, 28 February 2011 17:28:45 UTC

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