W3C home > Mailing lists > Public > public-html@w3.org > October 2009

Re: Microdata: itemid attribute (feedback)

From: Ian Hickson <ian@hixie.ch>
Date: Sun, 25 Oct 2009 11:59:11 +0000 (UTC)
To: Martin McEvoy <martin@weborganics.co.uk>
Cc: Jonas Sicking <jonas@sicking.cc>, John Giannandrea <jg@metaweb.com>, public-html@w3.org
Message-ID: <Pine.LNX.4.62.0910251157150.13521@hixie.dreamhostps.com>
On Sun, 25 Oct 2009, Martin McEvoy wrote:
> Jonas Sicking wrote:
> > > Given that RDF has been deployed for a while now, can you give any 
> > > example where this feature has been used? I.e. where several 
> > > *independent* parties have described properties of the same object, 
> > > and used this identifying mechanism to do it.
> 
> Yes there is one example I can think of ( not in a RDF sense ) I think 
> the uid class in microformats hcard is intended to be used as a unique 
> identifier of a hcard, it is also a url. The uid identifier is used to 
> determine a representative hCard [1]. I like to think of it more as the 
> canonical url of a hCard. Itemid and uid do seem very similar in 
> concept.
> 
> [1] http://microformats.org/wiki/representative-hcard

The Microdata vCard vocabulary excludes UID for this reason (there's a 
comment in the source mentioning that itemid="" should be used instead).

   http://www.whatwg.org/specs/vocabs/current-work/

-- 
Ian Hickson               U+1047E                )\._.,--....,'``.    fL
http://ln.hixie.ch/       U+263A                /,   _.. \   _\  ;`._ ,.
Things that are impossible just take longer.   `._.-(,_..'--(,_..'`-.;.'
Received on Sunday, 25 October 2009 11:46:01 GMT

This archive was generated by hypermail 2.2.0+W3C-0.50 : Wednesday, 9 May 2012 00:16:50 GMT