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. 2018 Jun 8;18(6):1886. doi: 10.3390/s18061886
Listing 1: Usage Control Rules 
[..setup and import omitted..]
			  
declare SensorFailureEvent
 @idroom: int
 @idsensor: int
end
  			  
rule “Check data from temperature sensor”
  no-loop true
  salience 1
  dialect “java”
  			  
when
  $aEvent:GlimpseBaseEventSB(this.isConsumed == false,
  this.isException == false,(this.getTemperature == null || < −20 || > 0 ) );
  $bEvent:GlimpseBaseEventSB(this.isConsumed == false,
  this.isException == false,
  (this.getTemperature == null || < −20 || > 0 ),
  this after $aEvent,this.getSensorID == $aEvent.getSensorID);
then
  SensorFailureEvent failureDetected = new SensorFailureEvent(idRoom,idSensor);
  CepBinder.sendEventTo(“CEP - Usage”, failureDetected);
  $aEvent.setConsumed(true);$bEvent.setConsumed(true);
  retract($aEvent);retract($bEvent);
end