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Issue i018 -- EPR abstract properties and binding to SOAP

From: Anish Karmarkar <Anish.Karmarkar@oracle.com>
Date: Mon, 07 Feb 2005 00:25:01 -0800
Message-ID: <420725DD.6020608@oracle.com>
To: public-ws-addressing@w3.org

I took an action to identify which parts of the specification give an 
impression that EPRs are more abstract than they actually are. This 
email fulfills that action.

This action was assigned during the discussion of issue i018 at the MEL 
f2f. This issue deals with the fact that the SOAP binding for EPR maps 
Reference Parameters directly as first class SOAP header blocks (with no 
change). This implies that SOAP 1.1/1.2 attributes such as 
soap11:mustUnderstand, soap12:mustUnderstand, soap11:actor, soap12:role, 
soap12:relay must be specified in the value of Reference Parameters in 
an EPR instance. I.e. the abstract property [Reference Parameter] value 
can be SOAP 1.1/1.2 specific. This means that when specifying a value 
for a reference parameter the minter of the EPR has to know not only the 
fact that the EPR is being used with SOAP but the version of SOAP as well.

Going through the spec the only place that it talks about abstractness 
is section 2.1 [1].

But this abstractness may only have to do with the fact that it is 
independent of serialization. I (and I suspect Glen as well) had 
interpreted WS-Addressing abstract properties to mean that all instance 
of an EPR could be bound to either SOAP 1.1 (using SOAP 1.1 binding) or 
SOAP 1.2 (using SOAP 1.2 binding) or some other protocol. If this 
interpretation is correct then the SOAP binding violates such an 
abstractness since it would inject soap version specific 
MU/role/actor/relay attributes in the value of the Ref Params. If this 
interpretation is incorrect, i.e., the abstractness has to do with the 
fact that it is independent of serialization then it seems like there 
isn't an issue here.



[1] http://dev.w3.org/cvsweb/~checkout~/2004/ws/addressing/ws-addr-core.html
Received on Monday, 7 February 2005 08:25:37 UTC

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