[occi-wg] New revision of the spec

[Alexander Papaspyrou]

Fine.

Of course I found yet another UML detail to poke on:

Currently, a Category has a type self-reference to related Categories, indicating that for a certain Category instance, other Category instances are related to it. IIRC, this was supposed to allow for building Category clouds (no pun intended), folksonomies, or hierarchies.

With the current notation, assuming a parent-child relationship, one can navigate from the parent to the child, but not back. Actually, the backreference is forbidden by definition of navigable associations in UML.

Andy and I agreed that this is unwanted. The question now is: do we want to *enforce* a backreference no matter what (a double-sided arrow), or do we want to *allow* backreferences, if necessary (a line with  no arrow tips at all).

Any opinions on that?

Best,
Alexander

Am 11.08.2010 um 12:26 schrieb Edmonds, AndrewX:

> We should be ok [1] with what's there. As said on skype all that needs verifying is directionality of the associations.
> 
> Cheers,
> 
> Andy
> 
> [1] http://edn.embarcadero.com/article/31863
> 
> -----Original Message-----
> From: Alexander Papaspyrou [mailto:alexander.papaspyrou at tu-dortmund.de] 
> Sent: Wednesday, August 11, 2010 10:58 AM
> To: Edmonds, AndrewX
> Cc: Thijs Metsch; occi-wg at ogf.org
> Subject: Re: [occi-wg] New revision of the spec
> 
> Hey Andy,
> 
> I was refering to the latter.
> 
> -Alexander
> 
> Am 11.08.2010 um 11:49 schrieb Edmonds, AndrewX:
> 
>> Hey Alexander
>> Are you referring to the old ascii art diagram or the one I updated last night [1]?
>> 
>> Andy
>> 
>> [1] 
>> http://forge.gridforum.org/sf/wiki/do/viewAttachment/projects.occi-wg/
>> wiki/CoreAndModels/core.jpg
>> 
>> -----Original Message-----
>> From: occi-wg-bounces at ogf.org [mailto:occi-wg-bounces at ogf.org] On 
>> Behalf Of Alexander Papaspyrou
>> Sent: Wednesday, August 11, 2010 10:29 AM
>> To: Thijs Metsch
>> Cc: occi-wg at ogf.org
>> Subject: Re: [occi-wg] New revision of the spec
>> 
>> One more thing (tm):
>> 
>> I think that the UML figure of the relationships between Resource, Link, and Category is wrong. The arrows indicate inheritance, which is incorrect; it should be just a line (association) or a line with a diamond (aggregation/composition).
>> 
>> I could redo it in OmniGraffle as soon as we are clear about the semantics. Any special format required/expected?
>> 
>> -Alexander
>> 
>> Am 03.08.2010 um 09:26 schrieb Thijs Metsch:
>> 
>>> 
>>> Hi,
>>> 
>>> I would like to point you to the newest version of the spec:
>>> 
>>> http://forge.ogf.org/sf/wiki/do/viewPage/projects.occi-wg/wiki/CoreAn
>>> d
>>> Models
>>> 
>>> http://forge.ogf.org/sf/wiki/do/viewPage/projects.occi-wg/wiki/HTTPHe
>>> a
>>> derRendering
>>> 
>>> http://forge.ogf.org/sf/wiki/do/viewPage/projects.occi-wg/wiki/Infras
>>> t
>>> ructure
>>> 
>>> Some changes have happened including:
>>> 
>>> * renaming Kind to Resource
>>> * Cleanup of namespace for schemes in the category and links
>>> * added some diagrams etc.
>>> 
>>> This version includes a lot of rewording and should be more clear on 
>>> many issues!
>>> 
>>> Please review it and give us a first shot of feedback!
>>> 
>>> Cheers,
>>> 
>>> -Thijs
>>> 
>>> --
>>> Thijs Metsch
>>> Senior Software Engineer Grid and Cloud Technology Platform Computing 
>>> GmbH Europaring 60
>>> D-40878 Ratingen
>>> http://www.platform.com
>>> 
>>> http://www.nohuddleoffense.de/ - http://www.twitter.com/befreax 
>>> _______________________________________________
>>> occi-wg mailing list
>>> occi-wg at ogf.org
>>> http://www.ogf.org/mailman/listinfo/occi-wg
>> 
>> --
>> Alexander Papaspyrou
>> alexander.papaspyrou at tu-dortmund.de
>> 
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> 
> --
> Alexander Papaspyrou
> alexander.papaspyrou at tu-dortmund.de
> 
> -------------------------------------------------------------
> Intel Ireland Limited (Branch)
> Collinstown Industrial Park, Leixlip, County Kildare, Ireland
> Registered Number: E902934
> 
> This e-mail and any attachments may contain confidential material for
> the sole use of the intended recipient(s). Any review or distribution
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-- 
Alexander Papaspyrou
alexander.papaspyrou at tu-dortmund.de

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