[rules-users] Is there any way to find out last two events with some common properties

Is there any way to find out last two events with some common properties. In my app I'd defined a pojo as drools event whose expiry time is say 5 mins. Now I want to access the properties of last two events. say something like this rule "Props" when $E1 : MyEvent(prop1 = "MyProp") from entry-point MyStream $E2 : MyEvent(prop1 = "MyProp", this != $E1) from entry-point MyStream then Do something end In the above rule my concern is that since the expiry time is 5 minutes and I can receive any no of events during this period. How can I be sure that the above two events $E1 and $E2 are the latest one i.e. last two events received. I also thought of using sliding window but I don't know when they are going to be received say 1s, 1m, or 5m. kindly suggest -- View this message in context: http://drools-java-rules-engine.46999.n3.nabble.com/Is-there-any-way-to-f... Sent from the Drools - User mailing list archive at Nabble.com.