The below code which you wrote is very appropriate but where should we mention on which collection we are traversing the conditions on .
Like in collect $alarms : ArrayList(size>0) from collect ( Alarm( ...... ) from av.getAlarms() ) -- View this message in context: http://drools.46999.n3.nabble.com/Getting-Exception-while-running-rules-continuously-on-the-Event-Streams-from-Mule-Component-tp3372189p3375726.html Sent from the Drools: User forum mailing list archive at Nabble.com. _______________________________________________ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users