Re: [wsn] Multiple endpoints in IRP?

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

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?