Re: [regrep] Make ServiceBinding an ExtrinsicObject subtype withindependent lifecycle

[Farrukh Najmi <farrukh@wellfleetsoftware.com>]

I have updated the wiki page at:

<http://wiki.oasis-open.org/regrep/documents/plan/regrep4/serviceModel>

to reflect changes proposed by Oliver. I have also added a concrete XML 
Schema for the model.
One additional change is that Service now composes ServiceEndpoints as a 
ServiceEndpoint is not shared across services.

Please review this revised proposal and provide feedback. Thank you.

Farrukh Najmi wrote:
> Dear colleagues,
>
> Here is the external feedback I received privately from Oliver Newell 
> of MIT Lincoln Labs:
>
> "
> I looked over the proposed Service Model changes for regrep and had a 
> thought on the ServiceBinding
>
> From section 2.7.1 of the WSDL 2.0 spec
>
> "Conversely, a Binding 
> <http://www.w3.org/TR/wsdl20/#component-Binding> component which omits 
> any operation-specific binding details and any fault binding details 
> MAY omit specifying an interface. Binding 
> <http://www.w3.org/TR/wsdl20/#component-Binding> components that do 
> not specify an interface MAY be used to specify operation-independent 
> binding details for Service 
> <http://www.w3.org/TR/wsdl20/#component-Service> components with 
> different interfaces. That is, such Binding 
> <http://www.w3.org/TR/wsdl20/#component-Binding> components are 
> reusable across one or more interfaces"
>
> I think the idea behind this is be able to specify generic binding 
> mechanisms instead of having to repeat them for every service, as was 
> typically done in WSDL 1.1.  I think the bindings possible contain 
> more information than just 'SOAP' or 'HTTP', but variants of those 
> with different security settings, message exchange patterns, etc..   
> So perhaps bindings do have their own independent lifecyle?  If so, I 
> guess the ServiceEndpoint would have a 'hasBinding' association to an 
> independent ServiceBinding object?
> "
>
> I think The quote from section 2.7.1 is pretty clear in stating that 
> under certain restrictions a Binding may be reused across services. 
> Therefor I agree with Oliver's suggestion that we keep ServiceBinding 
> in RegRep 4 as a separate top level class with its independent 
> lifecycle and relate it to a Service via 'HasBinding" association. 
> Such a class should be derived from ExtrinsicObject (so it can have 
> wsdl attached).
>
> TC members please comment on email list. I would like to get approval 
> of this change request via email if possible given that it is so 
> obvious an improvement.
> Thanks.
>
>
> Farrukh Najmi wrote:
>> Dear Colleagues,
>>
>> Managing services and data sets produced/consumed by services is a 
>> very important use case for RegRep.
>>
>> I have been working on harmonizing various Service Information model 
>> that are dominant today.
>> The experience suggests that perhaps we should consider improving our 
>> ServiceInformationModel
>> for RegRep 4 to better reflect the needs of the user community.
>>
>> I have started a wiki page on this topic at:
>>
>> <http://wiki.oasis-open.org/regrep/documents/plan/regrep4/serviceModel>
>>
>> Please review the page so discuss in our next meeting as a planned 
>> agenda item.
>> Thank you.
>>
>>
>
>


-- 
Regards,
Farrukh Najmi

Web: http://www.wellfleetsoftware.com