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[RDFa] rdf:XMLLiteral (was RE: Missing issue on the list: identification of RDFa content)

From: Hausenblas, Michael <michael.hausenblas@joanneum.at>
Date: Fri, 16 Feb 2007 11:14:14 +0100
Message-ID: <768DACDC356ED04EA1F1130F97D29852FF4FCD@RZJC2EX.jr1.local>
To: "Ivan Herman" <ivan@w3.org>, <public-rdf-in-xhtml-tf@w3.org>
Cc: <public-swd-wg@w3.org>

Ivan, All,

Indeed we did not resolve the XMLLiteral issue aka the default 
data type issue), yet. 

The rather good news: There is an issue in Tracker, now [1].
The bad one: We still have to decide what we want/need ;)

Current status:

 + We are talking about section ' XML Literals' in [2]
 + Mark has put together a comprehensive list of options we have [3]

Regarding this issue I have made the following observation
that I'd like to discuss with you:

Referring to [4], the XML Content within an RDF Graph is 
quite unambiguously defined. The definition says:

'RDF provides for XML content as a possible literal value. 
 This typically originates from the use of rdf:parseType="Literal" 
 in the RDF/XML Syntax. Such content is indicated in an RDF graph
 using a typed literal whose data type is a special built-in data type
 rdf:XMLLiteral, defined as follows ...'

amongst other things, the definition contains

'a lexical space that is the set of all strings which are 
 well-balanced, self-contained XML content [5]'

Taking the following fragment as an example input

<div about="">
 <h1 property="dc:title">
  E = mc<sup>2</sup>: The Most Urgent Problem of Our Time

I would assert that this does not conform to the definition
of a well-balanced, self-contained XML content as of [5] due
to the fact that the content of the <div> does not start with
an element.

Any thoughts?


[1] http://lists.w3.org/Archives/Public/public-swd-wg/2007Feb/0115.html
[2] http://www.w3.org/2006/07/SWD/RDFa/syntax/#IDAK3Y5F
[4] http://www.w3.org/TR/rdf-concepts/#section-XMLLiteral
[5] http://www.w3.org/TR/2000/REC-xml-20001006#NT-content

 Michael Hausenblas, MSc.
 Institute of Information Systems & Information Management
 JOANNEUM RESEARCH Forschungsgesellschaft mbH
 Steyrergasse 17, A-8010 Graz, AUSTRIA

    phone: +43-316-876-1193 (fax:-1191)   
   e-mail: michael.hausenblas@joanneum.at
      web: http://www.joanneum.at/iis/ 

   mobile: +43-660-7621761
      web: http://www.sw-app.org/ 

>-----Original Message-----
>From: public-rdf-in-xhtml-tf-request@w3.org 
>[mailto:public-rdf-in-xhtml-tf-request@w3.org] On Behalf Of Ivan Herman
>Sent: Tuesday, February 13, 2007 5:51 PM
>To: public-rdf-in-xhtml-tf@w3.org
>Subject: Missing issue on the list: identification of RDFa content
>Looking at the RDFa issues' list I realized that an issue I raised a
>long time on the identification of RDFa content[2] is not on the list.
>As far as I can see, this thread ended with a mail of Mark[3] but I do
>not think it should be considered as closed...
>The same holds for the datatype of literals. Wing has re-started the
>thread in [4], we had some discussion in the resulting thread, but it
>isn't recorded on [1] either...
>[1] http://www.w3.org/2006/07/SWD/track/products/2
>Ivan Herman, W3C Semantic Web Activity Lead
>URL: http://www.w3.org/People/Ivan/
>PGP Key: http://www.cwi.nl/%7Eivan/AboutMe/pgpkey.html
>FOAF: http://www.ivan-herman.net/foaf.rdf
Received on Friday, 16 February 2007 10:16:10 UTC

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