[glue-wg] Fwd: Question about ssociation end and inheritedassociation end

[David Horat]

On Fri, Apr 17, 2009 at 12:23 PM, Burke, S (Stephen)
<stephen.burke at stfc.ac.uk> wrote:
> glue-wg-bounces at ogf.org
>> [mailto:glue-wg-bounces at ogf.org] On Behalf Of Paul Millar said:
>> Option 2) would allow publishing both Storage- and Computing-
>> Service.ID
>> values as LocationServiceID attributes; i.e., the following
>> would be valid
>>
>>       LocationServiceID=<StorageService.ID>
>>       LocationServiceID=<ComputingService.ID>
>>       LocationDomainID=<UserDomain.ID>
>>       LocationDomainID=<AdminDomain.ID>
>>
>> If this is all correct, I'd go for option 2) here.
>
> Note that this interacts with the way inheritance is done and the
> question of whether IDs are globally unique. If there were separate
> attributes called ComputingServiceID and StorageServiceID and they were
> allowed to be identical then this scheme wouldn't work, but if every
> object has a globally unique EntityID then it's OK.

IDs are unique globably as stated in page 8 of the GLUE 2.0 Specifications.

>
>  There is also an issue of whether you would want to know what kind of
> object is being referred to - i.e. with this scheme you can't tell from
> the Location object what kind of service/domain it relates to. On the
> other hand I suspect that you would normally follow the reference the
> other way round.

True and I suspect the same.

>
> Stephen
> --
> Scanned by iCritical.
> _______________________________________________
> glue-wg mailing list
> glue-wg at ogf.org
> http://www.ogf.org/mailman/listinfo/glue-wg
>



--
David Horat
Software Engineer – IT/GD – Grid Deployment Group
CERN – European Organization for Nuclear Research » Where the web was born
Address: 1211 Geneva - Switzerland, Office: 28/R-003
Phone +41 22 76 77996
Professional Web: http://cern.ch/horat
Personal Web: http://davidhorat.com/
Profile: http://linkedin.com/in/davidhorat