[rules-users] CEP + prevent consequences from triggering multiple times?

Hi, I'm trying to write a rule in drools, which triggers once some condition is active for a specified time interval. For example, if a vehicle is over a speed limit (100 mph) for 30 seconds, I want to trigger an action. However, once this rule has fired, I don't want it to fire again until the vehicle has dropped below the speed limit (and gone over the limit again). The only way I've managed to model this is by defining two rules; one for determining when the vehicle is speeding and one for determining when it is not speeding and using a global object to track the state of the vehicle (see rules below). rule "OverSpeedLimit" no-loop true when $minSpeed : Double() from accumulate( $speedingEvent : SpeedingEvent ($speed : speed) over window:time( 30s ) from entry-point SpeedingStream, min($speed) ); eval ($minSpeed > 100.0 && !state.speeding) then state.speeding = true end rule "!OverSpeedLimit" no-loop true when $speedingEvent : SpeedingEvent() from entry-point SpeedingStream eval ($speedingEvent.speed <= 100.0) then state.speeding = false end My questions is: Is there a better way to model the above behaviour, preferably as a single rule? The reason I ask is because I believe it would be too complicated for my users to define rules like this. Ideally, I would like to be able to create a DSL such as: "when Speed is above X for Y seconds then ..." Any help greatly appreciated. Thanks, Paul -- View this message in context: http://n3.nabble.com/CEP-prevent-consequences-from-triggering-multiple-ti... Sent from the Drools - User mailing list archive at Nabble.com.