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Subject: Comment: Sequencing in CAF specification
- From: "Tony Fletcher" <tony_fletcher@btopenworld.com>
- To: <ws-caf@lists.oasis-open.org>
- Date: Mon, 17 Jan 2005 10:54:34 -0000
Title: Message
Dear
Colleagues,
The Coordination
Framework (CF) specification seems to
specify a number of procedures that involve the sending and receiving of more
that one message. In these
cases the sequencing of messages can be important. For CF and
Context the sequencing may, in fact, be relatively straightforward, but
unless it is clearly specified that remains uncertain. I suspect that in
several cases the allowed sequencing is not trivial, even if it is not that
complex.
The current specification of CF only seems
to have diagrams that show the message set and their directions, not their
sequencing. The WSDL fragments only show input messages (and not what
can be sent out). So they do not even show what messages are responses to
what messages, let alone sequencing (which can not currently be expressed in
WSDL). WS-Context does have some start charts, but could probably be
improved.
I therefore suggest that state tables or
state charts are added to CF (and WS-Context checked to ensure its sequencing
specification is crystal clear.
Best
Regards,
Tony
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Choreology
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