[occi-wg] Revisiting Fat Links

[Edmonds, AndrewX]

You'll probably want to bash me, Ralf, but I have always favoured your
initial suggestion ("Another proposal") :-). Main reason is that without a
second call, as in the case with this new proposal, I can get the type
information of both the link and target resource and _also_ the attributes
of that link, in the examples shown, a specialized Link.

Where one aspect of confusion or debate arises with your initial suggestion
is the idea that if a model entity has a Category associated with it, the
entity must then be a Resource. I don't quite see it this way. Rather, I see
the addition of a Category to any (R)resource (except Category itself,
that's non-sensical) as a means of signaling type information.

Andy

PS: I hope I'm not repeating an earlier argument of someone elses.

-----Original Message-----
From: occi-wg-bounces at ogf.org [mailto:occi-wg-bounces at ogf.org] On Behalf Of
Ralf Nyren
Sent: Tuesday, August 17, 2010 5:50 PM
To: occi-wg at ogf.org
Subject: [occi-wg] Revisiting Fat Links

Hi all,

After more discussions and writing a sample implementation of the Link as  
a resource concept I have come to realize its advantages.

I do however still believe that Fat Links are necessary to be able to  
model all relevant use cases. Alexander pointed out that compared to his  
Thin Link proposal Fat Links would not integrate in a sufficiently clean  
way with the OCCI core model. In an attempt to address some of these  
concerns I have added a new section called "Revisiting Fat Links" to the  
Link & Linking page [1].

The changes from the previous Fat Links proposal are:
  - Link specialization is realized through the use of additional  
categories, i.e. the same way OCCI Resource resources are extended so is  
also the Link resource extended.
  - The class attribute is _not_ used to delegate the Link type. It merely  
says that the link MAY be specialized. It is an indication to the client  
to request Link details.
  - The rel attribute is used to delegate the type of the Link target, i.e.

as suggested by the Web Linking draft.

Comments welcome.

regards, Ralf

[1] http://forge.ogf.org/sf/wiki/do/viewPage/projects.occi-wg/wiki/Link
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