David,
Take a look at the definitions of the ServiceBinding and Override elements
on the CPA spec. The ServiceBinding element identifies the delivery
channel that is to be used for all received messages under the Process
Specification document except as follows. The Override element defines
exceptions to the previous sentence. It identifies a different delivery
channel to be used for a specific business transaction. If you want to
support SyncReply for certain business transactions, you define Override
elements for those business transactions.
At runtime, the sender does not tell the receiver which delivery channels
to use for what. That's a negotiation matter during composition of the
CPA. The receiver decides which delivery channels it will use where and
puts this into the CPP. Delivery channels are uniquely identified within
the CPP (ID attributes) and it doesn't matter whether two or more will have
the same transport.
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
*************************************************************************************
David Fischer <david@drummondgroup.com> on 08/20/2001 08:32:35 PM
To: "Christopher Ferris (E-mail)" <chris.ferris@east.sun.com>
cc: "ebXML Messaging (E-mail)" <ebxml-msg@lists.oasis-open.org>
Subject: RE: T2 SyncReply and ReliableMessagingMethod in
QualityOfServiceInfo
Maybe I acceded to quickly? I am trying to understand how to use another
delivery channel to support SyncReply. I see CPAid in the MessageHeader so
the
receiving end knows which CPA to use. I guess the DeliveryChannel is
chosen
based upon which transport is involved.
What if there are two DeliveryChannels with the same transport. One HTTP
w/
SyncReply=True and one HTTP w/ SyncReply=False, how does the receiver know
which
one to use? The CPAid would be the same. Do we need to append the
DeliveryChannel ID on the end?
<eb:CPAid>CompanyA-003</eb:CPAid>
Where CPAid is "CompanyA" and the DeliveryChannel ID is "003"? I'm not
sure how
the sender tells the receiver which DeliveryChannel to use. Please forgive
my
ignorance but, how does this work?
David Fischer
Drummond Group.