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Subject: RE: [wsn] Multiple endpoints in IRP?
-----Original Message-----
From: Steve Graham [mailto:sggraham@us.ibm.com]
Sent: Friday, Aug 06, 2004 5:12 AM
To: Patil, Sanjay
Cc: David Hull; 'Vambenepe, William N'; wsn@lists.oasis-open.org
Subject: RE: [wsn] Multiple endpoints in IRP?
Hi Sanjay:
IRP does not require WS REsources of the same type to share a single endpoint. So, in your example, it is completely legal for the Subscriptions created by an NP to have 3 or 4 or 20 or n different SubscriptionManager endpoints.
++++++++
Steve Graham
(919)254-0615 (T/L 444)
STSM, On Demand Architecture
Member, IBM Academy of Technology
<Soli Deo Gloria/>
++++++++
"Patil, Sanjay" <sanjay.patil@sap.com> 08/05/2004 06:49 PM
To: "'Vambenepe, William N'" <vbp@hp.com>, Steve Graham/Raleigh/IBM@IBMUS, David Hull <dmh@tibco.com>
cc: wsn@lists.oasis-open.org
Subject: RE: [wsn] Multiple endpoints in IRP?
I have a related question here --
Does the IRP require that multiple WS Resources of the same type share a single endpoint? For example, is it required that the EPRs for all the Subscriptions created by a NotificationProducer have the same endpoint address. Or would it simply be considered as a common practice (isn't that really a pattern)?
Thanks,
Sanjay
> -----Original Message-----
> From: Vambenepe, William N [mailto:vbp@hp.com]
> Sent: Thursday, Aug 05, 2004 2:59 PM
> To: Steve Graham; David Hull
> Cc: wsn@lists.oasis-open.org
> Subject: RE: [wsn] Multiple endpoints in IRP?
>
>
> (with my TC member hat on, not my chair hat)
>
> The statement you pointed out is really just a reinforcement of the
> rules of the IRP. And, as Steve says, it doesn't imply any
> capability to
> address WS-Resources as groups. Or did I misunderstand your question
> David?
>
> William
>
>
> ________________________________
>
> From: Steve Graham [mailto:sggraham@us.ibm.com]
> Sent: Thursday, August 05, 2004 1:43 PM
> To: David Hull
> Cc: wsn@lists.oasis-open.org
> Subject: Re: [wsn] Multiple endpoints in IRP?
>
>
>
> hi David:
> I would think that one of our WSDM colleagues could comment further.
> But from my read of the statement you quoted from WSDM MUWS, it was
> simply observing that a manageability endpoint (eg a Web service
> endpoint) may be the front end for multiple resources. Therefore the
> IRP must be used to identify any single one of those resources. I
> didn't get the read that there was any capability implied to access a
> group of more than one resource with a single EPR. This is
> not possible
> from what I understand of WS-Addressing.
>
> sgg
>
> ++++++++
> Steve Graham
> (919)254-0615 (T/L 444)
> STSM, On Demand Architecture
> Member, IBM Academy of Technology
> <Soli Deo Gloria/>
> ++++++++
>
>
>
>
> David Hull <dmh@tibco.com>
>
> 08/05/2004 04:14 PM
>
>
> To: wsn@lists.oasis-open.org
> cc:
> Subject: [wsn] Multiple endpoints in IRP?
>
>
>
> While reading through WSDM MUWS, I ran across this interesting
> statement:
>
> "If the manageability endpoint corresponds to a variable
> number (zero or
>
> more) of manageable resources, then the WSRF Implied Resource Pattern
> MUST be followed. This means that the element(s) listed in the
> ReferenceProperties of a WS-Resource qualified EPR must be
> included in
> the header of messages sent to such manageability endpoints."
>
> This seems to imply a WS-Address with multiple ReferenceProperties
> elements, one for each EPR.
>
> Does the IRP allow for multiple resources to be addressed as
> a group?
> Does this have to be done via repeated ReferenceProperties
> elements, or
> could one give a predicate instead, or bake something magic into the
> Address URI?
>
> I realize that the IRP is in a fluid state at the moment, but I'd be
> interested to know current thinking. Is this the sort of
> issue the WSRP
>
> subgroup is trying to address?
>
>
>
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