CPPA3 updates

[Pim van der Eijk <pvde@sonnenglanz.net>]

Dear all,

I just uploaded revision #14 of the ebCore CPPA3 schema and a new WD05 
of the ebCore CPPA3 specification, which covers the schema updates #13 
and #14. These provide close to full support for ebMS2, ebMS3 including 
the AS4 profile and the Part 2, Advanced Features and SAML profile 
specifications (with some help from its editor, former OASIS ebMS TC 
member Ian Otto) and EDIINT (with help from Dale Moberg).

Apart from completing the functional coverage,  the recent updates make 
it easier to write succinct CPAs that are easy to maintain and easy to 
process.  Also, the updates make it easy to express use of, and possible 
minor deviations from, message profiles.  E.g. to express that an 
exchange implements a particular AS4 profile,  except for one 
parameter.  A new feature in CPPA3 is explicit delegation.  This allows 
a party to express that a third party sends, or receives, messages on 
its behalf. It can be mixed freely with messaging types of communication.

In parallel, outside OASIS, I've updated the open source cppa3 library, 
available at https://pypi.python.org/pypi/cppa3, which closely follows 
the spec and schema (and has helped to prevent or fix a lot of issues).  
The main module of the library is a "unify.py" module, which is a 
complete sample implementation of the unification algorithm defined in 
section 3 of the specification.   Another module that was improved and 
extended is the "profile.py" module.  This module can take and apply 
definitions of profiles (e.g. particular AS4 profiles) as defaults,  and 
expand a provided CPPA3 document that has references to these 
definitions, allowing for any overrides desired.

The library comes with an extensive set of (currently 271) regression 
tests. The tests include CPP and CPA samples showcasing all the features 
in the schema and of the library.  So anyone not interested in the 
library may still find the test suite of interest.  Among these tests 
are samples for the ENTSOG and e-SENS/CEF AS4 profiles.

Any and all feedback welcome.

Kind Regards,

Pim