Re: recommended pattern for markup-valued 'breadcrumb' properties in RDFa

On Nov 12, 2012, at 13:40 , Gregg Kellogg wrote:

[skip]
> 
> In RDFa 1.1 Lite, you'd need to use @property and repeat both @proprty on each <a>. but I don't think @inlist is officially part of RDFa 1.1 Lite.

Alas!, it is not. We tried to keep Lite to the bare minimum... 

> 
>> Looking at http://www.w3.org/TR/2012/REC-rdfa-core-20120607/#markup-fragments-and-rdfa
>> and http://www.w3.org/TR/2012/REC-rdfa-core-20120607/#s-xml-literals
>> it seems an alternate design might be possible with RDFa. Instead of
>> trying to make the entire 'breadcrumb' structure explicit as a graph,
>> we could put the whole breadcrumb into a single property value as a
>> larger piece of markup. The current spec shows this example:
>> 
>> <h2 property="dc:title" datatype="rdf:XMLLiteral">
>> E = mc<sup>2</sup>: The Most Urgent Problem of Our Time
>> </h2>
>> 
>> ...presumably this will be adjusted in the HTML+RDFa world. There was
>> discussion in the RDF WG earlier this year towards HTMLLiteral or HTML
>> as a datatype; http://lists.w3.org/Archives/Public/public-rdf-wg/2012May/0612.html
>> and the latest drafts now have such a datatype:
>> 
>> http://dvcs.w3.org/hg/rdf/raw-file/default/rdf-concepts/index.html#section-html
>> http://www.w3.org/TR/2012/WD-rdf11-concepts-20120605/#section-html
>> (latest public and editor's drafts seem identical)
> 
> Not a fan of this use case, but I believe that our intention is to support rdf:HTML in HTML+RDFa 1.1, certainly my processor does.
> 

Yes, we agreed that rdf:HTML will be part of RDFa+HTML5. And my parser implements it, too...

Ivan

----
Ivan Herman, W3C Semantic Web Activity Lead
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Received on Monday, 12 November 2012 22:32:40 UTC