[rules-users] Getting Exception while running rules continuously on the Event Streams from Mule Component.

[Wolfgang Laun]

Here is an example:

$av: List() from accumulate ( $a: Alarm( ...select "interesting" alarms... ),
                        init( List<Alarm> alarms = new ArrayList<Alarm>(); )
                        action( alarms.add($a); )
                        reverse( alarms.remove($a); )
                        result(alarms) )

To select "interesting" alarms, separate the constraints for fields
"activation" and
"geofenceCustomer" with a comma (which acts like a logical "and").

-W


2011/9/28 Hari Kishan <HariKishan.Tammana at pass-consulting.com>:
> @wolfgang Yesterday you told me to use accumulate instead of collect. But i
> could not find the right way to use accumulate here. Please see below my
> rules when condition [ collect function(Bold & Italic) ] and please tell me
> how can i use accumulate there. If possible change the conditional element
> to accumulate with appropriate changes. when // "Sensor Data Idem Stream" is
> where Mule sends the Sensordata facts // for each Alarm / Sensordata
> combination that is identified via the vehicle id $sd : SensorDataIdem ($vid
> : vehicleId) from entry-point "Sensor Data Idem Stream" // Set a references
> for later on the initial facts $av : AlarmVehicle(vehicleId == $vid) //The
> Condition to be added to get the active Alarms from the List of Alarms
> eval($av!=null && $av.getAlarms()!=null && $av.getAlarms().size()>0) $alarms
> : ArrayList(size>0) from collect ( Alarm( ( (activation ==
> AlarmConstants.ALWAYS_ACTIVE) || (activation ==
> AlarmConstants.ACTIVE_ONLY_ONTOUR && $sd.onTour == true) || (activation ==
> AlarmConstants.ACTIVE_ONLY_NOT_ONTOUR && $sd.onTour == false) || (activation
> == AlarmConstants.ACTIVE_ONLY_ONMOVING && $sd.onMove == true) || (activation
> == AlarmConstants.ACTIVE_ON_TIME_WINDOW ) ) && ( ( (geofenceCustomer == 0)
> || (geofenceCustomer == 1 && $sd.inCustomerGeoFence == true) ||
> (geofenceCustomer == 2 && $sd.inCustomerGeoFence == false) ) && (
> (geofenceDepot == 0) || (geofenceDepot == 1 && $sd.inDepotGeoFence == true)
> || (geofenceDepot == 2 && $sd.inDepotGeoFence == false) ) ) ) from
> $av.getAlarms() ) eval($alarms!=null) then ...........
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> running rules continuously on the Event Streams from Mule Component.
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