Response to the Siemens Public Review Comments on the SCA AssemblySpecification (from Issue 152)

The SCA Assembly technical committee
thanks Siemens for its comments on the SCA Assembly Model specification,

as contained in:

http://lists.oasis-open.org/archives/sca-assembly-comment/200906/msg00003.html
 

The Assembly technical committee took
a decision at its Face-to-Face meeting in December 2009 to take no action

in response to the Siemens comments,
with the result that the relevant parts of the specification are left unchanged.

The Assembly TC debated the points made
by Siemens about the requirement for an SCA runtime to support the  

Web services binding in addition to
the SCA binding. The opinion of the TC is that the removal of the requirement

for the support of the Web services
binding would have the effect of limiting the interoperability and portability
of 

SCA components and applications.  Since
the SCA binding is not interoperable, on its own it provides no basis

for interoperability.  Without
some other binding being required, there can be no guarantee of interoperability.

Portability will also be severely limited
if there is no common interoperable binding provided by SCA runtimes -
given 

that systems built using a Service-Oriented
Architecture are typically expected to be interoperable.  Having to

restructure applications in order to
move them between runtimes is against some of the goals that SCA aims to
 

achieve. 

As a result of these considerations,
the Assembly TC was unwilling to remove the requirement for Web services

support. 

Yours,  Mike.

Strategist - Emerging Technologies,
SCA & SDO.

Co Chair OASIS SCA Assembly TC.

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