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Subject: Re: [sca-assembly] [SCA EVENTS] Summary of tentative agreements


FWIW, I'm in agreement with Scott/TIBCO as well on point 4. I'd also  
agree to have it as a point of discussion.

Jim

On Sep 11, 2009, at 8:37 AM, Scott Vorthmann wrote:

> Martin,
>
> I was afraid that I mis-heard Peter's question to me, and it looks  
> like I did.  I'm not in agreement with number 4, and I think I can  
> safely say I speak for TIBCO on this.
>
> In my view, the constraints on "wiring" and interface compatability  
> should be contingent upon the character of the interface.  For  
> example, an interface entirely full of one-way operations (I'll call  
> them events) does not require a producer of those events to produce  
> any or all of them; it merely guarantees that no *other* events will  
> be produced by that producer.
>
> Our current wiring and interface compatibility rules simply make the  
> assumption that every interface has at least one request-reply  
> operation.
>
> Scott
>
> On Sep 10, 2009, at 6:22 AM, Martin Chapman wrote:
>
>> Here is a summary of what I think we agreed yesterday, and are  
>> therefore areas for the TC to explore further.
>>
>>
>>
>> Position 1: the current SCA 1.1 model needs tweaking/adding to, to  
>> support a pub/sub paradigm.
>>
>>
>>
>> Position 2: SCA 1.1 use of WSDL has certain assumptions in  
>> assemblers’/developer’s heads (and current tooling), which need  re- 
>> examining for pub/sub.
>>
>>
>>
>> Position 3: SCA 1.1 wires and wiring may be too restrictive for pub/ 
>> sub and need to be relaxed/extended.
>>
>>
>>
>> Position 4: We agreed that an assembler looking at SCDL should be  
>> able to distinguish between events and one-way requests.
>>
>>
>>
>> Cheers,
>>
>>   Martin.
>>
>>
>>
>>
>> Martin Chapman | Standards Professional
>> Mobile: +353 87 687 6654
>>
>> ORACLE Ireland
>> "Please consider your environmental responsibility before printing  
>> this e-mail"
>>
>
>
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