Hi Vincent, i have an rfid reader and i am collecting tagid from that sensor. I would like to raise an event when the number of different tags in a time interval is greater than 20 (for example). On Tue, May 22, 2012 at 2:33 PM, Vincent LEGENDRE < vincent.legendre(a)eurodecision.com&gt; wrote: > No. > You can't use $obs before you bind it (2nd pattern) > The binding done for accumulate pattern must be used in some accumulate > fonction in order to be seen outside. > > Instead of trying to fix your rule, may be you can describe (with simple > phrases) what you are trying to do ? > > ------------------------------ > *De: *"Matteo Cusmai" <cusmaimatteo(a)gmail.com&gt; > *À: *"Rules Users List" <rules-users(a)lists.jboss.org&gt; > *Envoyé: *Mardi 22 Mai 2012 12:33:16 > *Objet: *[rules-users] Accumulate function > > > Hi all, > i am going to use a custom accumulate function like that: > > rule "CrowdInAreaEvent-event" > no-loop > when > $RFIDReader : SensorFixed(type == Sensor.SENSOR_TYPE_RFID, > $coverageArea : areaOfInterest ) > not CrowdInAreaEvent( sensor == $RFIDReader, this meets[ 5s ] > $obs > ) > $count : Integer( intValue > 10 ) > from accumulate( $obs : RFIDObservation( $tagid : tagid, > sensor == $RFIDReader ) > over window:time( 60s ) from entry-point > lowLevelSensorStream, > countDistinct( $tagid ) ); > then > insert( SituationManager.createCrowdInAreaEvent( "Crowd, number > people: " + $count, Event.THREAT_LOW, $coverageArea, $RFIDReader, $count, > 60, 10 ) ); > end > > I need to refer $obs object in order to compare timing of new observation > with last event. Is it possible to do that? > > Thanks a lot, > Matteo. > > _______________________________________________ > rules-users mailing list > rules-users(a)lists.jboss.org > https://lists.jboss.org/mailman/listinfo/rules-users > > > _______________________________________________ > rules-users mailing list > rules-users(a)lists.jboss.org > https://lists.jboss.org/mailman/listinfo/rules-users > >