Re: [ws-rx] Usage of Ref parms for WS-Reliable Messaging

[Doug Davis <dug@us.ibm.com>]

The notion of having the server look
at the ref-p's in the ReplyTo EPR is breaking new ground - as many have
said, the ref-p's are meant to be opaque to everyone but the minter.  If
people really want this kind of new behavior then I think that would require
a change to WSA so that it can be very clearly spelled out when and how
a server is supposed to do this (even for just comparing them against some
thing else) - 'cause right now there is nothing in WSA that would lead
any one to think they need to do this at all. 
thanks,
-Doug

Paul Fremantle <paul@wso2.com>

10/05/2006 12:48 PM

To	Christopher B Ferris/Waltham/IBM@IBMUS
cc	tom@coastin.com, wsrx <ws-rx@lists.oasis-open.org>
Subject	Re: [ws-rx] Usage of Ref parms for WS-Reliable Messaging

Chris

I disagree. The server simply needs to compare one refparam to another,
without any understanding of its content.

Paul

Christopher B Ferris wrote:
>
> Tom,
>
> This would violate the inherent opacity principle upon which refParams
> are based because the
> server would have to "understand" that refParam and act
accordingly. I 
> would not like to have
> RM set a bad precedent.
>
> Cheers,
>
> Christopher Ferris
> STSM, Software Group Standards Strategy
> email: chrisfer@us.ibm.com
> blog: http://www.ibm.com/developerworks/blogs/page/chrisferris
> phone: +1 508 377 9295
>
> Tom Rutt <tom@coastin.com> wrote on 09/29/2006 02:32:55 AM:
>
> >
> > quoted from 9/28 minutes:
> >
> > "
> > Chris: We are not in agreement. I don’t want to use reference
params
> > because they violate the Web Architecture. WSA WG ignored TAGs
issues.
> > Paul: I’m not at all in agreement. The reference parameters
are not 
> used
> > to identify a resource, they are used to identify a particular
RMD.
> > "
> >
> > I think that using a ref parm to identify a MakeConnection Queue
could
> > be considered application level information associated with a
> particular
> > endpoint address.
> >
> > I really think, if we wanted to, we could work out a specification
of a
> > use of a ref parm, which when added to the generic wsa:anonymous
URI in
> > the address
> > field of an EPR, identifies the "make connection" queue
which will
> > utiize the back channel only when it is appropriate (i.e, when
a make
> > connection is received with that queue ID).
> >
> > What I am trying to say is that only the address is needed for
> > dispatching the message to the appropriate location, and that
the a
> > queueID ref parm could indicate when that anonymous back channel
is
> > appropriate for use.
> >
> > Tom Rutt
> >
> > --
> > ----------------------------------------------------
> > Tom Rutt email: tom@coastin.com; trutt@us.fujitsu.com
> > Tel: +1 732 801 5744 Fax: +1 732 774 5133
> >
> >