[Bug 11949] Eventing: runtime detection of filter errors

http://www.w3.org/Bugs/Public/show_bug.cgi?id=11949

--- Comment #1 from Doug Davis <dug@us.ibm.com> 2011-02-15 17:24:21 UTC ---
New proposal:

It is possible for a Subscribe request to contain a filter that will never
evaluate to true for the lifetime of the subscription. If an event source
detects this condition **during the processing of the Subscribe request**
it MUST generate a wse:EmptyFilter fault in response to the Subscribe request
message.  ** If, after the SubscribeResponse message has been sent, the
event source determines that the filter will never evaluate to true for the
lifetime of the subscription, or if there is an error within the
filter expression, the subscription MUST be terminated. In this case
if an EndTo was provided, then a SubscriptionEnd message MUST be sent with 
a Status value of
"http://www.w3.org/2002/ws/ra/edcopies/ws-evt/SourceCancelling/SourceCancelling".
 **

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Received on Tuesday, 15 February 2011 17:24:22 UTC