RE: [wsn] Multiple endpoints in IRP?

["Vambenepe, William N" <vbp@hp.com>]

It's not in any way required by the spec. Because of how people might
choose to implement it I wouldn't be surprised if it is often the case
that all the subscription created by one NotificationProducer share the
same address element in their EPR, but as far as the spec is concerned
it is irrelevant.

Regards,

William

-----Original Message-----
From: Patil, Sanjay [mailto:sanjay.patil@sap.com] 
Sent: Thursday, August 05, 2004 3:49 PM
To: Vambenepe, William N; Steve Graham; David Hull
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?
> 
> 
>