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Subject: Re: [ebxml-cppa] Issue with ProcessSpecification, CollaborationRole



Hima,

My responses in line, MWS2:

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

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



Himagiri Mukkamala <himagiri@sybase.com> on 10/18/2001 08:59:00 PM

To:    Martin W Sachs/Watson/IBM@IBMUS
cc:    "ebxml-cppa@lists.oasis-open.org" <ebxml-cppa@lists.oasis-open.org>
Subject:    Re: [ebxml-cppa] Issue with ProcessSpecification,
       CollaborationRole



<hima> response inline

cheers,
-hima
Martin W Sachs wrote: Himagiri,

Please see my responses below.

Regards,
Marty


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



Himagiri Mukkamala <himagiri@sybase.com> on 10/18/2001 06:33:39 PM

To:    "ebxml-cppa@lists.oasis-open.org" <ebxml-cppa@lists.oasis-open.org>
cc:
Subject:    [ebxml-cppa] Issue with ProcessSpecification, CollaborationRole

Anybody think this is a problem?

CPAs PartyInfo has multiple collaboration roles which maps to roles in
BPSS.
This is the RoleName being used in the message header.

WHat if the CPA has multiple collaboration roles with same "Role" from
multiple BPSS documents in the  CPA for a  PartyInfo?

E.g. If a Party with PartyId "SellerPartyID" plays the same role
"Seller" in two process specifications
"http://www.sybase.com/processes/OrderManagement1.
xml" and http://www.sybase.com/processes/OrderManagement2.xml"

For a particular ServiceBinding, which deliveryChannel or other
characteristics do you pick?

MWS:  The From party application chooses the To party's delivery channel
based on which Process Specification it is executing.  The
ProcessSpecification
and ServiceBinding elements are both child elements of the same
CollaborationRole element.  The From party application must pass either
the delivery channel identification or its endpoint address to the MSH
along
with the message.



<hima> But if MSH uses CPA  and get's a message from another node,
it doesn't know about the process specification, cause it's not in the
message header.  The same MSH could
be dealing with multiple process specifications with the same CPAID.

MWS2:  My response above is about how the message is sent.  The From
application (or middleware) has all the information necessary to have the
MSH
send the message to the right place.  Choosing a delivery channel is a
From function, not a To function. My response regarding receiving the
message is below.  I assume you accept it since you did not reply to it.
See further comment to it below.

Onlyinformation to identify these properties from the message header is

CPAID, FromPartyId, ToPartyId, From Role, To Role

MWS: The message header also contains the conversationId.  This should
be sufficient to select the correct CollaborationRole element.  Service
and Action then provide the correct software entry point.

MWS2:  My above comment assumes that the state information for the
conversation
will contain all the information needed to route a message to the correct
software
interface in the application. That's a middlware matter, not an MSH matter.
Our
specification has to be clear enough so that middleware and application
designers
will know what to do without dictating solutions.

This may not be a good way for someone to design their architecture, but
there is scope for this to happen using CPA.
-hima

-----------------------------------------------------------------------------



<PartyInfo>
<PartyId>SellerPartyID</PartyId>
<PartyRef xlink_href = "http://aaaa/ebXML/msh"/
<CollaborationRole id = "SellerRole1">
<ProcessSpecification version = "1.0" name = "Order Management1"
   xlink_type = "simple"
xlink_href="http://www.sybase.com/processes/OrderManagement1.
xml"/>
<Role name = "Seller" xlink_type = "simple"
xlink_href =
"http://www.sybase.com/processes/OrderManagement1.xml#Seller"/
<ServiceBinding channelId = "N04" packageId = "N0402"
            name = "Product Purchase1">
<Service type = "string">Product Purchase1</Service>
</ServiceBinding>
</CollaborationRole>

<CollaborationRole id = "SellerRole2">
<ProcessSpecification version = "1.0" name = "Order Management2"
   xlink_type = "simple"
xlink_href="http://www.sybase.com/processes/OrderManagement2.
xml"/>
<Role name = "Seller" xlink_type = "simple"
xlink_href =
"http://www.sybase.com/processes/OrderManagement2.xml#Seller"/
<ServiceBinding channelId = "N04" packageId = "N0402" name = "Produc
t Purchase2">
<Service type = "string">Product Purchase2</Service>
</ServiceBinding>
</CollaborationRole>
.....
......
</PartyInfo>

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