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Re: Looking at the time element (again) (ISSUE-97)

From: Gregg Kellogg <gregg@kellogg-assoc.com>
Date: Thu, 10 Nov 2011 09:59:26 -0500
To: Shane McCarron <shane@aptest.com>
CC: "public-rdfa-wg@w3.org" <public-rdfa-wg@w3.org>
Message-ID: <17E7C0F8-D87D-4274-B5A6-2FEAF5BE9F86@greggkellogg.net>
On Nov 10, 2011, at 6:54 AM, Shane McCarron wrote:

> What if it matches none of them?

Untyped plain literal.

Gregg

> On 11/10/2011 8:52 AM, Gregg Kellogg wrote:
>> In my version of the proposals, I perform lexical analysis of @datetime against xsd:date, xsd:dateTime and xsd:time and choose the datatype based on the match. It's quite simple.
>> 
>> Gregg Kellogg
>> 
>> Sent from my iPad
>> 
>> On Nov 10, 2011, at 4:48 AM, "Ivan Herman"<ivan@w3.org>  wrote:
>> 
>>> Now that<time>  seems to be back into the picture, I have looked at ISSUE-97 again[1].
>>> 
>>> The issue, as raised by Stéphane, proposes to understand the '@datetime' property of the<time>  element. Essentially, if the source contains this:
>>> 
>>> <time property="something" datetime="2009-05-10">May 10th 2009</time>
>>> 
>>> we should, implicitly, consider this as being
>>> 
>>> <time property="something" datetime="2009-05-10" content="2009-05-10">May 10th 2009</time>
>>> 
>>> and then let the core RDFa processing go. That is of course easy.
>>> 
>>> However... do we want to add a datatype to this? One would think so, but then we get to a very slippery slope. Which datatype? Looking at
>>> 
>>> http://www.w3.org/TR/xmlschema-2/#date
>>> 
>>> we do have quite a lot of possibilities... There is of course xsd:dateTime (this is what Stéphane used in his original mail for the issue). This would mean the transformation of the<time>  element into:
>>> 
>>> <time property="something" datetime="2009-05-10" content="2009-05-10T00:00:00-00:00" datatype="xsd:dateTime">May 10th 2009</time>
>>> 
>>> but there are a bunch of others, like gYear, gYearMonth, etc.
>>> 
>>> Personally, I would propose to use xsd:dateTime only. But that has to be decided by the group.
>>> 
>>> However, nothing with time is simple... If the author puts in the whole ISO format, then are of course fine. But I would expect that in the vast majority of cases the hour and minute and the others will all be missing. Is it all right to just add the 0 hour, as Stéphane did it? Again, I can live with that, but this is something to be decided and known for interoperability reasons...
>>> 
>>> Minor things, but should be cast in stone:-)
>>> 
>>> Ivan
>>> 
>>> 
>>> 
>>> [1] http://www.w3.org/2010/02/rdfa/track/issues/97
>>> 
>>> ----
>>> Ivan Herman, W3C Semantic Web Activity Lead
>>> Home: http://www.w3.org/People/Ivan/
>>> mobile: +31-641044153
>>> FOAF: http://www.ivan-herman.net/foaf.rdf
>>> 
>>> 
>>> 
>>> 
>>> 
>>> 
> 
> -- 
> Shane McCarron
> Managing Director, Applied Testing and Technology, Inc.
> +1 763 786 8160 x120
> 
> 
Received on Thursday, 10 November 2011 15:01:44 GMT

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