Re: [sca-j] NEW ISSUE: Callback Simplification

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

Folks,

As you perhaps remember from the Assembly
F2F meeting, I'm certainly all in favour of simplification in
the area of callbacks and conversations.

However, this issue being raised in
the Java TC raises the question of whether all that is intended is some
tinkering with the Java API for these
capabilities, or whether the aim is a more general simplification of
callbacks and conversations.

If a more general reworking is intended,
then I think that a parallel issue needs raising in the Assembly TC
since I think that the Assembly TC defines
the general concepts that must then be implemented by the
other affected TCs (which include at
least the language implementation TCs and the bindings TCs).


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

"Michael Rowley" <mrowley@bea.com>

12/02/2008 22:47

To	"OASIS Java" <sca-j@lists.oasis-open.org>
cc
Subject	[sca-j] NEW ISSUE: Callback Simplification

There’s been some informal discussion about
the need to simplify callbacks and now some email on the subject.  I’ll
suggest this issue to hang this discussion on.  I won’t put in a
proposal, since I don’t think we are yet at the stage where it is appropriate
to have a proposal stored in the JIRA.
 
 
RAISER: Michael Rowley
 
TARGET: Java API and Annotation Specification
 
DESCRIPTION:
 
One of SCA’s goals is to present a simple
programming model to service developers.  Unfortunately, the current
capabilities related to callbacks don’t really qualify as simple.  Developers
have to be able to understand all of the possible combinations of:
 
- The scope of the client (4 possibilities)
- The scope of the service provider (4 more
possibilities)
- Conversational or non-conversational on
the main interface.
- Conversational or non-conversational on
the callback interface.
- User specified callback IDs
- User specified callback objects.
- The relationship of callback IDs to conversation
IDs (possibly user specified)
- ...and probably more
 
PROPOSAL:
 
Not included.

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