RE: [wsn] Multiple endpoints in IRP?

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

(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?