RE: [wsn] Multiple endpoints in IRP?

[Steve Graham <sggraham@us.ibm.com>]

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?
> 
> 
>