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RE: Literals and turning off datatype/language

From: Hausenblas, Michael <michael.hausenblas@joanneum.at>
Date: Thu, 14 Jun 2007 10:35:06 +0200
Message-ID: <768DACDC356ED04EA1F1130F97D2985201168C32@RZJC2EX.jr1.local>
To: Niklas Lindström <lindstream@gmail.com>
Cc: <public-rdf-in-xhtml-tf@w3.org>


Niklas,

Thanks for sharing your concerns. Just a quick check: 
Did you have a look at [1], already?

Cheers,
	Michael

[1] http://www.w3.org/2006/07/SWD/wiki/RDFa/LiteralObject

----------------------------------------------------------
 Michael Hausenblas, MSc.
 Institute of Information Systems & Information Management
 JOANNEUM RESEARCH Forschungsgesellschaft mbH
  
 http://www.joanneum.at/iis/
----------------------------------------------------------
 

>-----Original Message-----
>From: public-rdf-in-xhtml-tf-request@w3.org 
>[mailto:public-rdf-in-xhtml-tf-request@w3.org] On Behalf Of 
>Niklas Lindström
>Sent: Wednesday, June 13, 2007 11:16 PM
>To: public-rdf-in-xhtml-tf@w3.org
>Subject: Literals and turning off datatype/language
>
>
>Hello all!
>
>The telecon for this Thursday (June 14th) aims to make official the
>resolution to ISSUE-25 - Default Datatype for Literals. This is not an
>attempt to re-raise the long-running debate. I do however have two
>concerns I'd like to voice before the issue is resolved. (I must admit
>I wasn't sure that a consensus had been reached..) Hopefully this is
>already as things are intended to work.
>
>
>My concerns are:
>
>1) It should be possible to "turn off" datatyping, regardless of
>whether rdf:XMLLiteral is the default or not. *Requiring* the author
>to resort to @content could IMO discourage adoption of RDFa in
>some/many cases. The reasons are:
>
>    - A datatyped literal has no language information.
>    - Given the same string values, a datatyped literal is not the
>same as a plain literal.
>
>Turning off datatyping should be done with an empty @datatype. Thus:
>
>    <html ... xml:lang="en">
>        <head>
>            <title property="dc:title" datatype="">The Story 
>Of Language</title>
>
>should yield:
>
>    <> dc:title "The Story Of Language"@en .
>
>
>2) It should be possible to "turn off" language scope. The reason is:
>
>    - Given the same string values, a literal with language is not the
>same as a plain literal.
>
>Turning off language scope should be done with an empty @xml:lang.
>Thus (combined with turning off datatype):
>
>    <p property="foaf:name" datatype="" xml:lang="">Some Body</p>
>
>should yield:
>
>    <> foaf:name "Some Body" .
>
>
>That is all. As said, this may already be the default behaviour,
>either implicitly or because I have failed to see it in the
>specification (this *is* how xml:lang is supposed to work as described
>at <http://www.w3.org/TR/REC-xml/#sec-lang-tag>). If not, I hope that
>this can be agreed upon and possibly added explicitly to avoid
>misunderstandings.
>
>
>Best regards,
>Niklas Lindström
>
>
>
Received on Thursday, 14 June 2007 08:32:11 UTC

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