[Simple] problem with filters and resource lists

[Silvestr.Peknik at tietoenator.com]

Hello, 

In draft-ietf-simple-event-filter-funct par. 4.1. is described how rls server handles filters in subscription to resource list. Following situation is not clear to me:

I have 2 lists in one RLS (name it RLS1): 
	list1 at example.com (bob at example.com, list2 at example.com)
	list2 at example.com (alice at biloxi.com, sarah at example.com)

Then I have subscribe with filter:

SUBSCRIBE sip:list1 at example.com SIP/2.0
   ...
   <?xml version="1.0" encoding="UTF-8"?>
   <filter-set xmlns="urn:ietf:params:xml:ns:simple-filter">
     <filter id="999" uri="sip:sarah at example.com">
	...
     </filter>
     <filter id="8439" uri="sip:alice at biloxi.com">
	...
     </filter>
   </filter-set>

My current understanding is that the filter for alice will NOT be propagated and will be lost, because:
1/ it will not be propagated in the subscribe to list2, because list2 is under administrative control of RLS1.
2/ it will not be applied by the RLS1, because it is not under it's administrative control

This is similar to the example in the draft, but in the draft the lists are in different RLSs - therefore the filter for alice is propagated in the subscribe to list2.

This seems like an error to me, because the result is different for 2 lists in the same RLSs and in 2 different RLSs.

Can someone explain this? 

Thank you,

Silvestr Peknik
Software Specialist

TietoEnator
Czech Software Center
Phone +420 599 096 027
E-mail silvestr.peknik at tietoenator.com  
 
Vystavni 292/13
CZ-709 16 Ostrava
 
www.tietoenator.com


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