Re: [sca-j] [NEW ISSUE] Section 10.13 on @OneWay requires a normativestatement

[Mike Edwards <mike_edwards@uk.ibm.com>]

Simon,

So, if an unannotated Java POJO implements
only local interfaces and is introspected as a single local service
typed by the POJO class itself, as described
in JAVA CI spec sections 2.3 and 8, what does the componentType
of that service look like and how would
a <reference/> element be configured in order to invoke the service
offered
by a component using the unannotated
POJO as an implementation?


Yours,  Mike.

Strategist - Emerging Technologies, SCA & SDO.
Co Chair OASIS SCA Assembly TC.
IBM Hursley Park, Mail Point 146, Winchester, SO21 2JN, Great Britain.
Phone & FAX: +44-1962-818014    Mobile: +44-7802-467431  
Email:  mike_edwards@uk.ibm.com

From:	Simon Nash <oasis@cjnash.com>
To:	sca-j@lists.oasis-open.org
Date:	28/04/2009 14:38
Subject:	Re: [sca-j] [NEW ISSUE] Section 10.13 on @OneWay requires a normative statement

---

The problem with this interpretation is that @OneWay
would need
to appear on the reference side, and a reference must use a
Java interface and not a Java class.

   Simon

David Booz wrote:
> +1
> 
> Dave Booz
> STSM, BPM and SCA Architecture
> Co-Chair OASIS SCA-Policy TC and SCA-J TC
> "Distributed objects first, then world hunger"
> Poughkeepsie, NY (845)-435-6093 or 8-295-6093
> e-mail:booz@us.ibm.com
> 
> Inactive hide details for Mike Edwards ---04/28/2009 08:59:22 
> AM---Simon, I don't think it was the intention of the original woMike
> Edwards ---04/28/2009 08:59:22 AM---Simon, I don't think it was the
> intention of the original wording of the spec to
> 
> 
> From:                
> Mike Edwards <mike_edwards@uk.ibm.com>
> 
> To:                
> OASIS Java <sca-j@lists.oasis-open.org>
> 
> Date:                
> 04/28/2009 08:59 AM
> 
> Subject:              
  
> Re: [sca-j] [NEW ISSUE] Section 10.13 on @OneWay requires a normative
> statement
> 
> ------------------------------------------------------------------------
> 
> 
> 
> 
> Simon,
> 
> I don't think it was the intention of the original wording of the
spec 
> to permit the implementation
> pattern that you describe below.
> 
> I think that the case of class methods being annotated was there to
> cover the case where the
> whole class defines the interface - as occurs for unannotated classes
> with purely local interfaces.
> 
> Maybe I have this wrong, but that is how I understand it.
> 
> 
> Yours, Mike.
> 
> Strategist - Emerging Technologies, SCA & SDO.
> Co Chair OASIS SCA Assembly TC.
> IBM Hursley Park, Mail Point 146, Winchester, SO21 2JN, Great Britain.
> Phone & FAX: +44-1962-818014 Mobile: +44-7802-467431
> Email: mike_edwards@uk.ibm.com
> 
> From:                
 Simon Nash <oasis@cjnash.com>
> To:                
 OASIS Java <sca-j@lists.oasis-open.org>
> Date:                
 28/04/2009 12:43
> Subject:              
   Re: [sca-j] [NEW ISSUE] Section 10.13 on @OneWay requires
a 
> normative statement
> 
> 
> ------------------------------------------------------------------------
> 
> 
> 
> Mike,
> I agree that this needs to be made normative.
> 
> I had always thought that @OneWay applied only to interface methods.
> The reference to class methods (in the original text and your proposal)
> surprises and intrigues me, because this suggests that @OneWay could
> be applied to a service implementation method without being applied
to
> the corresponding interface method.  If this is legal, it would
mean
> that the client invokes the service synchronously, and the service
> returns back to the client immediately and dispatches the method for
> subsequent execution.
> 
> Do we want to allow this interaction pattern?  If we do want
to allow
> it, then I think we need to make this more explicit in the text.
> 
>  Simon
> 
> Mike Edwards wrote:
>  >
>  > *** NB I am happy for this new issue to be treated as a
comment on the
>  > Public Review draft - I just don't want this item lost
***
>  >
>  > Raiser:              
 Mike Edwards
>  >
>  > Target:              
 sca-javacaa-1.1-spec-cd02-rev6.doc
>  >
>  > Description:
>  >
>  > There is a sentence in section 10.13 about @OneWay which
in effect
>  > describes a normative requirement but is not in the
>  > form of a normative statement:
>  >
>  > Lines 1923 - 1925:
>  >
>  > "The @OneWay annotation is used on a Java interface
or class method to
>  > indicate that invocations will be dispatched
>  > in a non-blocking fashion as described in the section on
Asynchronous
>  > Programming."
>  >
>  > This must be recast into the form of a normative statement
>  >
>  > Proposal:
>  >
>  > Replace lines 1923 - 1925 with the following normative
statement:
>  >
>  > When a Java interface method or a Java class method is
annotated with
>  > @OneWay, the SCA runtime MUST ensure that all
>  > invocations of that method are executed in a non-blocking
fashion, as
>  > described in the section on Asynchonous Programming.
>  > [JCA90052]
>  >
>  >
>  > Yours,  Mike.
>  >
>  > Strategist - Emerging Technologies, SCA & SDO.
>  > Co Chair OASIS SCA Assembly TC.
>  > IBM Hursley Park, Mail Point 146, Winchester, SO21 2JN,
Great Britain.
>  > Phone & FAX: +44-1962-818014    Mobile: +44-7802-467431
 
>  > Email:  mike_edwards@uk.ibm.com
>  >
>  >
>  > ------------------------------------------------------------------------
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