Use of WS-RF and WS-N for a simple use case I have

[Prasad Yendluri <pyendluri@webmethods.com>]

Hi,

My apologies for cross-posting here but, it seemed this question is 
relevant to both teams.

I have a use case where the resources come into existence dynamically 
and terminate after sometime (e.g. like an instance of a class, a unix 
process etc.). I would like to host a Web service that would front these 
instances and permits clients to subscribe to notifications on the 
status of these instances. All instances share common property types  
including an "instance-id" type. However the number and actual 
instance-ids of these is not known in advance, and change with time.  
The Notifications should identify the instance-id of the entity the 
notification is for, and a list of properties (types) and their values.

The clients also need to have the option to subscribe to notifications 
on a specific instance(s) by supplying their instance-ids (e.g. for long 
running ones) (based on previous call like getInstanceList()).

Subscribing to Notifications via Topics does not seem to give me the 
granularity or of an instance-id type dynamism that I am looking for 
above. Is that correct or did I not understand certain aspect of WS-RF 
or WS-N that facilitates this?

To utilize WS-RF and WS-N for my use case how would I go about defining 
the resource properties and the topics (and the associated 
messageTypes?). How do I specify an instance-id in my subscription?

Thanks, Prasad