Re: Idempotency attribute (Section 7.6.4.2, line 1569)

[Martin W Sachs <mwsachs@us.ibm.com>]

Arvola,

To answer the simple question first:  The document exchange layer of the
CPP-CPA contains the variables related to the Message Service.

As to idempotency, I hope that Chris Ferris will reply.  I believe that you
have turned up another loose end from the TP-TRP interlocks during the
first life of ebXML.  It certainly seems that idempotency checking cannot
be optional with onceAndOnlyOnce semantics.

Regards,
Marty

*************************************************************************************

Martin W. Sachs
IBM T. J. Watson Research Center
P. O. B. 704
Yorktown Hts, NY 10598
914-784-7287;  IBM tie line 863-7287
Notes address:  Martin W Sachs/Watson/IBM
Internet address:  mwsachs @ us.ibm.com
*************************************************************************************



Arvola Chan <arvola@tibco.com> on 07/26/2001 05:27:49 PM

To:   ebxml-cppa@lists.oasis-open.org
cc:
Subject:  Idempotency attribute (Section 7.6.4.2, line 1569)




This concept is not mentioned any where in the  Messaging Service spec. In
order to implement the OnceAndOnlyOnce delivery  semantics, the MSH already
performs duplicate detection and filtering. It is not  clear how the
idempotency test applied at the document exchange layer (described  on line
1575) differs from the duplicate detection and handling described in
Section 10.3 in the Messaging Service spec.

Is the document exchange layer part of the  MSH?

What is the meaning of  deliverySemantics=OnceAndOnlyOnce and
idempotency=false?

-Arvola

Arvola Chan (arvola@tibco.com)
TIBCO Software  (on loan to RosettaNet)
+1-650-846-5046 (US-Pacific)