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Re: small comments on the RDFa Primer

From: Ivan Herman <ivan@w3.org>
Date: Fri, 12 Jan 2007 08:42:00 +0100
Message-ID: <45A73BC8.5030106@w3.org>
To: Ben Adida <ben@adida.net>
Cc: public-rdf-in-xhtml-tf@w3.org
Thanks Ben!


Ben Adida wrote:
> Hi Ivan,
> Happy New Year to you, too!
>>1. I see that you have put in the role of the 'class' attribute leading
>>to 'rdf:type'.
>>If I look at chapters 2.5 and 2.6, in the example at the end of 2.5 you
>>have two very similar constructions with class "val:Vevent" and
>>class="contactinfo" but, according to the generated RDf tripls in 2.6,
>>the first one leads to a <#xtech_conference_talk> rdf:type cal:Vevent
>>whereas the second one does not yield any similar constraction. Is this
>>a bug or a feature? If it is a feature, I would have hard time
>>explaining it to an unitiated...
> It is a bug. It should still generate a triple, although with a local
> scope so that it won't lead to any unintended deductions.
> In this case, it should be something like:
> <http://example.org/staff/jo> rdf:type <_contactinfo>
> I'm not sure if we've agreed what the local prefix would be... Mark,
> you've thought about this, can you jump in?
> I'll wait for Mark's comments to fix this in the draft.
>>2. My comment on XMLLiteral is still pending[1]. I also see that there
>>*is* a 'type' attribute that one can use to set the datatype (as an
>>aside, I am not sure I like the word 'type' for this, it is misleading
>>for an RDF person:-(. I did not realize that in my previous comment. In
>>view of this and my arguments described in [1], let me rephrase my
>>proposal: the default datatype should be 'xsd:string' (which would also
>>mean stripping all the xml elements from the results if necessary); if
>>one really wants xml, than setting the rdfs:XMLLiteral datatype
>>explicitly is an option.
> There was a bug here, it is supposed to be "datatype" according to our
> syntax. I've updated this.
> I am inclined to agree with you on the default datatype: it should just
> be a string, except if you really want some XML. What do others think?
> -Ben


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, 12 January 2007 07:41:55 UTC

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