W3C home > Mailing lists > Public > public-rdfa-wg@w3.org > January 2013

Re: If no datatype is specified for @datatime

From: Stéphane Corlosquet <scorlosquet@gmail.com>
Date: Thu, 17 Jan 2013 13:23:09 -0500
Message-ID: <CAGR+nnHU0fH_7zydaBS-uB+U0TcU-s8Z=1aFyWGt1pQ+bR=YkA@mail.gmail.com>
To: Gregg Kellogg <gregg@greggkellogg.net>
Cc: RDFa WG <public-rdfa-wg@w3.org>
On Thu, Jan 17, 2013 at 1:09 PM, Gregg Kellogg <gregg@greggkellogg.net>wrote:

> On Jan 17, 2013, at 5:31 PM, Stéphane Corlosquet <scorlosquet@gmail.com>
> wrote:
>
>
>
> On Thu, Jan 17, 2013 at 11:09 AM, Gregg Kellogg <gregg@greggkellogg.net>wrote:
>
>> On Jan 17, 2013, at 5:03 PM, Stéphane Corlosquet <scorlosquet@gmail.com>
>> wrote:
>>
>> http://www.w3.org/TR/rdfa-in-html/#additional-rdfa-processing-rules
>>
>> "If no datatype is specified, and the value does not match any of the
>> automatically detected xsd datatypes, a plain literal must be generated
>> with the associated language of the node, if available. "
>>
>> Could we be more precise regarding datatype here, and use "datatype
>> attribute" instead of datatype. I'm particularly interested in the case
>> where there is an empty datatype attribute with @datetime.
>>
>> to give more context, I found this part of the spec not very clear while
> working on the easyrdf RDFa parser.
>
> in other words, what does "no datatype" means? does it include the
> scenario when there is no datatype attribute and also when there is an
> empty datatype attribute? or the former only? then what happens in the case
> of the later?
>
>
> In this context, "no datatype" means that there is no @datatype attribute.
> If you have @datatype="", you have specified a datatype, which is the empty
> datatype; this is consistent with the (former) treatment of plain literals
> from non-text nodes.
>

ok, the plain text version of the spec doesn't it justice. looking at the
HTML spec, datatype is in orange and therefore means the attribute, not
datatype in general, so nevermind, I retract my proposal. The spec is fine
as it is.

Steph.


>
> It seems to me that a plain literal could be generated when there is an
> empty @datatype (in line with RDFA-CORE).
>
>
> Yes.
>
> To make a concrete proposal, add "If an empty datatype is present" to the
> second sentence:
> [[[
> If datatype is specified, it must take precedence. If no datatype is
> specified, and the value does not match any of the automatically detected
> xsd datatypes, a plain literal must be generated with the associated
> language of the node, if available.
> ]]]
> would become
> [[[
> If datatype is specified, it must take precedence. If an empty datatype is
> present, or if no datatype is specified and the value does not match any of
> the automatically detected xsd datatypes, a plain literal must be generated
> with the associated language of the node, if available.
> ]]]
>
>
> Yes, but I thought you preferred saying "if there is no @datatype
> attribute", to if the datatype is not specified.
>
> Gregg
>
> Steph.
>
>
>>
>> +1
>>
>> Gregg
>>
>> --
>> Steph.
>>
>>
>>
>>
>
> --
> Steph.
>
>
>


-- 
Steph.
Received on Thursday, 17 January 2013 18:23:40 UTC

This archive was generated by hypermail 2.3.1 : Tuesday, 6 January 2015 21:19:58 UTC