I think it's time to return to basics and my
belief is that starts with clear clarification of Real World Effect
(RWE).
See pages 18-19 of the RM. Also see the
attached subset of slides from Ken's RM tutorial.
Clearly, RWE is related to the notion of Shared
State and Interaction. This point (at least Shared State) seems to have
been dropped in the RA.
Also, we need to be clear about RWE. Does a
consumer using a proxy agent to send a message to a Service requesting
invocation of a permissible action failing due to a network outage count as
a RWE since the Service never got to request message to carry out its
action? Ambiguities such as this need to
get resolved.
For SOA-based systems, to me, only joint action
is interesting. Who cares about separate action? Heck, anything that
some entity does could be characterized as an action. That would leave us
with unlimited permutations.
Enough rambling for now.
- JAE
SOA-RM TEM (PR2)-RWE.ppt
