Re: [Simple] problem with filters and resource lists

[Hisham Khartabil <hisham.khartabil at telio.no>]

On Feb 13, 2006, at 3:13 PM, <Silvestr.Peknik at tietoenator.com> wrote:

> Hello,
>
> I found another thing I need help with.
>
> 3.3 (draft-ietf-simple-event-filter-funct-05):
> ...
>    A SUBSCRIBE request destined to a list URI [4] MAY include multiple
>    filters specific to individual resources.  This is achieved by
>    including multiple <filter> elements with different URIs of 
> resources
>    in each of those elements.  This resource specific filter overrides
>    any list specific filter, if any.  The list specific filter may or
>    may not include a URI.
>
> So I guess the filters do not stack. If I have filter without uri and
> another one with particular uri, only the one with particular uri is
> applied to the affected resource. Right?

Not quite. The text should be interpreted as saying that the individual 
resource specific filter is applied first.

> Now consider following situation. I have list1 at 1.com (RLS1) and
> list2 at 2.com (RLS2). List2 is one of the resources in list1. List2
> contains bob at 1.com. A subscription to list1 carries filters for bob 
> (F1)
> and for list2 (F2). F2 is propagated to the subscription to list2. RLS2
> subscribes back to RLS1 to bob and propagates F2.

Why is F2 being propagated?

Hisham

> So notifications from
> bob are filtered with both F2 (because it is propagated) and with F1
> because bob is under RLS1 administrative control and thus RLS has to
> filter the notifications.
>
> Should it work this way?
>
> Thank you,
>
> Silvestr Peknik


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