Re: [soa-rm-ra] Point of Action

[Frank McCabe <frank.mccabe@us.fujitsu.com>]

Ken:
  Well, its possible. It is just that in modeling the RA it is  
definitely important. As are the enforcement and decision points. The  
reason being that in complex systems these are often distributed  
across several elements; and our mission in the RA is building a  
machine that works.
  I see the PoA as being at exactly the public/private boundary. I  
may be wrong too...
Frank

On Mar 17, 2006, at 10:29 AM, Ken Laskey wrote:

> Frank,
>
> Playing Devil's Advocate, couldn't I argue the Point of Action is  
> part of the participants private actions and no business of the  
> public?  Shouldn't I only be concerned with the real world effects  
> that result, even if the Point of Action is the "fulcrum for many  
> aspects of services"?  Is the Point of Action one of those things  
> that needs to be described as part of constraints or policies so  
> the public is aware of possible side effects from a particular  
> Point of Action?
>
> Ken
>
> On Mar 17, 2006, at 1:19 PM, Frank McCabe wrote:
>
>> It is pretty early days in the RA work. However, we have  
>> identified at least one concept that might be considered for the  
>> RM. This should go in section 3.2.3 (Real World Effect).
>>
>> ==============
>> Point of Action
>>
>> The time and location where a capability is applied by a service  
>> provider in reaction to an interaction between the service  
>> provider and consumer. The point of action is often internal to  
>> the service provider but represents the locus of the provider's  
>> response to the consumer in actually applying its capabilities  
>> (and analogously, the service consumer may also have points of  
>> action).
>>
>> The point of action is a fulcrum for many aspects of service,  
>> including the management of services, policy enforcement, and  
>> achieving the real world effect.
>>
>> ===============
>>
>> On re-reading the RM, I realize that there were analogous concepts  
>> associated with policies: Policy Decision Point and Policy  
>> Enforcement Point that have been dropped (they were present in an  
>> earlier draft).
>>
>> It is a little early to be certain whether we will need these  
>> concepts in the RA, but I am fairly confident that we will. The  
>> issue for me is whether they also belong in the RM.
>>
>> Comments?
>>
>> Frank
>>
>>
>
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> Ken Laskey
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