Hi Glen,
The averages are indeed recalculated on event expiration. Example:
You have values for the following events:
e1: 20
e2: 30
e3: 40
So the average is 30. Whenever e1 is expired in your window, the average
is recalculated to 35 (assuming no new event arrived).
What are you seeing there?
Edson
2010/2/15 Glenn Macgregor <gmacgregor(a)pocketkings.ie>
Hi All,
I am still working through a CEP use case which is going fairly well. I
have a few rules and it seems they are working as I expect. Is there a way
to get called back when events go out of a time window? My current use case
is alerting, I have a stream of events (param updates) coming in and I
create a ParamUpdateEvent for each. I have a rule which averages the values
in the ParamUpdateEvent and tests against a threshold, that is working fine.
The problem is when I don’t receive any events for a period of time over the
window size I really want to the rule which calculates the average to fire
when anything is moved out of the window as well as when an update arrives,
is this possible?
Thanks
Glenn
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Edson Tirelli
JBoss Drools Core Development
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