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Re: RDF/A triples without PCDATA

From: Steven Pemberton <steven.pemberton@cwi.nl>
Date: Tue, 14 Mar 2006 23:00:34 +0100
Message-ID: <44173D02.9090201@cwi.nl>
To: "DuCharme, Bob (LNG-CHO)" <bob.ducharme@lexisnexis.com>
Cc: Ben Adida <ben@mit.edu>, public-rdf-in-xhtml-tf@w3.org

Bob,

Bear in mind that content="..." isn't there to make the content 
invisible, and isn't about 'real' meta vs. 'sort-of' meta.  The content 
attribute is more about cases like:

	<span property="dc:date" content="2006-03-13">yesterday</span>

If your <meta> is in the <head> then it is by default non-visible, and 
in that case there is no effective difference between

	<meta property="dc:creator" content="Bob DuCharme"/>
and
	<meta property="dc:creator">Bob DuCharme</meta>

(Actually I think we agreed that <meta> is display:none everywhere, in 
which case the equivalence isn't even restricted to the <head>.)

Best wishes,

Steven Pemberton

DuCharme, Bob (LNG-CHO) wrote:
> Thanks Ben! (Apologies for the prematurely sent reply.)
>  
>>Note that you might want to consider examples where you're reusing the 
> data within the HTML page
>  
> I've seen plenty of examples that use the existing PCDATA, but for the 
> purposes of the PRISM group, I wanted to make sure I properly understood 
> how to add metadata that is particularly "meta" to a document, 
> e.g. workflow tracking information that is not part of the content. 
> They're going to like this.
>  
> It's really going to just be 3 or 4 slides at the end of a presentation 
> on XHTML 2 aimed at people who've never heard of RDF/A, so there won't 
> be anything interesting to people who already know much about it.
>  
> Congratulations on the WD status of the Primer!
>  
> Bob
> 
> ------------------------------------------------------------------------
> *From:* Ben Adida [mailto:ben@mit.edu]
> *Sent:* Tuesday, March 14, 2006 11:53 AM
> *To:* DuCharme, Bob (LNG-CHO)
> *Cc:* public-rdf-in-xhtml-tf@w3.org
> *Subject:* Re: RDF/A triples without PCDATA
> 
> 
> Bob,
> 
> Yes, these are working examples of RDF/A.
> 
> Note that you might want to consider examples where you're reusing the 
> data within the HTML page, for example:
> 
> =========
> This page, entitled
> <span about="" property="dc:title">Meta-metadata</span>,
> was written by 
> <span about="" property="dc:creator">Bob DuCharme</span>.
> ==========
> 
> I'm not sure if one of us can make it to NYC on 3/20, but we'll keep you 
> posted!
> 
> Please do send us your slides or other material if you present something 
> on RDF/A (assuming the presentation isn't confidential, of course)!
> 
> -Ben
> 
> On Mar 14, 2006, at 11:45 AM, DuCharme, Bob ((LNG-CHO)) wrote:
> 
>> I tried asking this on semantic-web@w3.org 
>> <mailto:semantic-web@w3.org> with no luck, and I guess it is more of 
>> an rdf-in-xhtml issue, so I'll try here.
>>  
>> To add metadata to an XHTML 2 document without adding PCDATA, the 
>> following seems OK to me according to RDF/A documentation, but I 
>> wanted to double-check with others. Assuming that the dc namespace 
>> prefix has been properly declared, are these kosher RDF/A?
>>  
>>   <meta about="http://www.snee.com/bobdc.blog/2006/01/metametadata.html"
>>                  property="dc:creator" content="Bob DuCharme"/>
>>  
>>  <div about="http://www.snee.com/bobdc.blog/2006/01/metametadata.html">
>>     <meta property="dc:creator" content="Bob DuCharme"/>
>>     <meta property="dc:title" content="Meta-metadata"/>
>>     <meta property="dc:date" content="2006-01-20"/>
>>     <meta property="dc:subject" content="metadata"/>
>>     <meta property="dc:subject" content="Data Model Comparison Table"/>
>>   </div>
>>  
>> If anyone who will be in New York City on 3/20 is interested in a 
>> promotional opportunity for RDF/A, I'll be giving a talk to the PRISM 
>> group (see 
>> http://www.idealliance.org/activities/meetings/prism04_20_06/roster04_20_06.asp) 
>> about new opportunities that XHTML 2 presents for storing structure 
>> and metadata. The people at Time Inc. are particularly interested, and 
>> while I certainly plan to discuss RDF/A a bit, if anyone would like to 
>> join me and do a few slides themselves, I'd be happy to have them.
>>  
>> thanks,
>>  
>> Bob
>>  
> 
Received on Tuesday, 14 March 2006 22:00:47 GMT

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