Re: [soa-rm-ra] quick poll on identifier and description

[Rex Brooks <rexb@starbourne.com>]

I think Frank's comment depends on the granularity of a given, cited 
resource. I think a description artifact is certainly a resource. The 
name (label) of the description artifact is either one part of a 
composite identifier or the identifier itself.

Cheers,
Rex

At 8:59 PM -0500 11/14/07, Ken Laskey wrote:
>Frank,
>
>There may not be a single identifier (argh! for figuring out when 
>two references point to the same thing) but a known identifier 
>should resolve uniquely.  I don't think having identifier in 
>Description and Identifier in Resource makes sense unless we somehow 
>justify how the two are different.
>
>Now, when is there a limit in Description being a Resource?  Well, 
>obviously somewhere along the way you have a Description, which 
>although considered a Resource, does not have a description of 
>itself.  How does this show up in the UML?  It appears an override 
>of the parent class, and I believe that is possible but don't 
>remember how.  Otherwise, Description sure looks and feels like a 
>Resource.
>
>Ken
>
>On Nov 14, 2007, at 6:01 PM, Francis McCabe wrote:
>
>>Ken
>>
>>  I think that there is not likely to be a single identifier, nor is 
>>there a 'standard' way of getting from a resource to its identifier.
>>
>>  I notice that the original diagram (and yours) had arrows on the 
>>associations; including a navigability from resources to 
>>identifiers. On reflection, I am not sure that that is correct.
>>
>>Frank
>>
>>On Nov 14, 2007, at 12:52 PM, Ken Laskey wrote:
>>
>>>Today's discussion talked about description being a resource and a 
>>>resource having an identifier, so description has an identifier.
>>>
>>>In the most recent (general) Description diagram (sent out in an 
>>>email 10/16), Resource has a Description and Identifiers are a 
>>>component of Description.
>>>
>>>Which is our preference?
>>>
>>>I'm thinking of something like the following diagram
>>>
>>><pastedGraphic.png>
>>>
>>>where Resource has both a Description and an Identifier, the 
>>>Description of a Resource has a reference to that Identifier (so 
>>>you unambiguously know what is being described), and Description 
>>>being a subclass of Resource thus has its own Identifier. (Ignore 
>>>the ' on Resource and Identifier.)
>>>
>>>Note, a version of this also needs to show up as an artifact diagram.
>>>
>>>Your vote?
>>>
>>>Ken
>>>
>>>
>>>------------------------------------------------------------------------------------------
>>>Ken Laskey
>>>MITRE Corporation, M/S H305     phone:  703-983-7934
>>>7515 Colshire Drive                        fax:        703-983-1379
>>>McLean VA 22102-7508
>>>
>>
>
>-----------------------------------------------------------------------------
>Ken Laskey
>MITRE Corporation, M/S H305      phone: 703-983-7934
>7151 Colshire Drive                         fax:       703-983-1379
>McLean VA 22102-7508
>
>
>
>
>
>Attachment converted: Macintosh HD:smime 653.p7s (    /    ) (0033F495)


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Rex Brooks
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