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Subject: Managing context in BPSS / CPA
Team,
Attached is the CAM draft on using an XML
context instance
to determine business operating criteria discussed
on todays
call.
The idea is that there is an available area in the
CPA
where we can put a URL that points to this >>
Dale has
in mind a good spot in the CPA we can use to do
this <<
And so when partners agree to the CPA - they are
agreeing
to this set of context values and
rules.
Then the BPSS that is associated with that CPA
can
reference the URL to find the context variables
and
the settings for this particular agreement.
You can have various
settings then for the contexts
that you need - and
- (this was the new bit I added
today based on the
discussions) - the ability to
reference the logical document instance - and compare
a value thru the use
of a special set default namespaces -
as: bpss: and doc: to indicate for the XPath which
bit of
XML you are referencing.
See attached for how
this all works.
In the CAM template approach - you can pick
the
value for a context variable based on the value from
your XML instance that you are processing - however
- in the BPSS use case - you need to reference the
document (responding or replying) that you are currently
pointed to by that BPSS step.
For more information on CAM the URL to
that
information is http://cam.swiki.net
Monica also asked that we mention other
context
mechanisms -
The BCM team has a webservice choice point
mechanism for managing dynamic context - see
Appendix B of the BCM specifications
from the Kavi document area.
This is a Swiss Army knife for context - and includes
linking and switching (useful between multiple BPSS
instances
running concurrently?) and a deal more besides just
simple
context variables - but its good for the easy stuff
too!
Thanks, DW.
|
OASIS-CAM-Specifications-Context-Management.doc
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