Re: [sca-assembly] ISSUE 47:Operation element for Interface

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

Bryan,

I have to admit to not following the
argument you are making here - it might be useful if we could work on a
couple of
use cases to help motivate the issue
and the potential solutions.


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

Bryan Aupperle <aupperle@us.ibm.com>

02/06/2008 18:24

To	sca-assembly@lists.oasis-open.org
cc
Subject	[sca-assembly] ISSUE 47:Operation element for Interface

Upon further reflection o this issues, the original proposal is not sufficient.

Suppose a service is bidirectional and both the forward and callback interfaces
have a cancel method that need to be denoted as endsConversation
in the SCDL.  A single operation child element is not sufficient to
handle this case.  We need operation and callbackOperation child elements;
each with the name, oneWay and endsConversatioon attributes described in
the original proposal. 

Note  that I am not suggesting a complete replication of the interface
definition,  Only those operations that need the SCA attributes would
need to be listed in the SCDL. 

When we discussed opening this issues, the question was raised if we could
extend the existing operation child element of service and reference instead
of adding an operation element to interface.   It seems more natural
to me to have operations belong to interfaces.  However, if we go
that direction, we still have to address the callback problem above.

Bryan Aupperle, Ph.D.
STSM, WebSphere Enterprise Platform Software Solution Architect
Master Inventor

Research Triangle Park,  NC 
+1 919-254-7508 (T/L 444-7508)
Internet Address: aupperle@us.ibm.com

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