OK, can I just make sure I've grasped the outcome of this UID exchange?
So...
It's considered ok to use UID on multiple vcards on a single page.
If any of multiple vcards on a single page represent the same person
the vcards should be given the same UID.
If any of the multiple vcards on a single page represent different
people or organisations the vcards should NOT have the same UID.
If any of the multiple vcards on a single page, that represent different
people or organisations, for some reason need to share the same URI in
the UID element, then the URI should be suffixed with a fragment
identifier unique to that person or organisation - with the same unique
identifiier also set as the id attribute of the UID element.
please correct any errors in the above!
James
Brian Suda wrote:
On 12/16/08, Martin McEvoy <[email protected]> wrote:
Hello Scott I don't understand your issue , are you suggesting that a hcard
may have more than one UID element?
The UID element *is* the Unique Identifier of an entire hcard/vcard
http://microformats.org/wiki/hcard-singular-properties#uid
--- Scott is talking about the definition of UID from the RFC itself.
There is always the possibility that the wiki is not correct.
FROM: http://tools.ietf.org/html/rfc2426#page-24
3.6.7 UID Type Definition
To: [email protected]
Subject: Registration of text/directory MIME type UID
Type name: UID
Type purpose: To specify a value that represents a globally unique
identifier corresponding to the individual or resource associated
with the vCard.
So the UID is NOT the vCard itself, but connected to the data that is
contained within it. This is how you can do identity consolidation.
How you know that vCard over there with UID:123 is the same person as
this vCard over here with UID:123 Even if they both have different
information. This is why we have been trying to connect UID and URL,
much like XFN and OpenID your identity is your URL, which is globally
unique.
I will update the wiki page.
-brian
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