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[POWDER-DR] Comments regarding RDFa

From: Hausenblas, Michael <michael.hausenblas@joanneum.at>
Date: Thu, 27 Sep 2007 10:02:21 +0200
Message-ID: <768DACDC356ED04EA1F1130F97D29852012E5BF7@RZJC2EX.jr1.local>
To: <public-powderwg@w3.org>
Cc: "RDFa" <public-rdf-in-xhtml-tf@w3.org>

Phil, All,

As already stated I'm very glad to see RDFa being 
used to demo the linking capabilities in the POWDER-DR WD.

Ben [1] and Mark [2] mentioned two issues you might wish
consider taking into account when updating the WD:

1. We decided to NOT allow link/meta in the <body> (cf. [3])
   As @href is indeed allowed on any element in the 
   XHTML+RDFa DTD [4], the Example 4-1-3 can easily be rewritten:

<link rel="wdr:describedBy"
href="http://education.example.org/powder.rdf#DR_1" />

change to, e.g.,

<span rel="wdr:describedBy"
href="http://education.example.org/powder.rdf#DR_1" />

2. The second comment is not actually an RDFa issue, but however ...
   In '1 Introduction (Informative)' you state

 'The POWDER vocabulary namespace is http://www.w3.org/2007/05/powder# 
  for which we use the QName wdr.'

   Which is not 100% correct; the QName as defined in [5] consists of 
   an (optional) PREFIX , then ':', and then the LOCALPART. Am I
   correctly that what you want to express is something like: 
   In the POWDER spec, 'wdr' is used as the namespace prefix for the 
   POWDER vocabulary URI http://www.w3.org/2007/05/powder# ?

BTW, further information on RDFa can be found in the RDFa Primer [6] 
and in the RDFa Syntax [7] ...

Anyway, keep up the good work!


[5] http://www.w3.org/TR/REC-xml-names/#ns-qualnames
[6] http://www.w3.org/2006/07/SWD/RDFa/primer/20070918/
[7] http://www.w3.org/MarkUp/2007/ED-rdfa-syntax-20070921/

 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/ 

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Received on Thursday, 27 September 2007 08:02:08 UTC

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