Re: Microdata: itemid attribute (feedback)

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

You mentioned in an earlier email that @itemid is similar to @about in 
RDFa, @about in RDFa also supports relative urls do you think @itemid 
should too, I feel it would be useful in situations as I described in my 
first email[1] where @id and @itemid identify the same thing.



Martin McEvoy
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Received on Tuesday, 27 October 2009 10:25:54 UTC