I'm using Spring AMQP to read messages from RabbitMQ. After a message is read it's deserialized into one header (parent) object and multiple detail (child) objects. Those facts are then inserted into a stateless rule session. Finally, the updated facts are inserted into a database. I have several rules that will aggregate the detail facts using either the collect or accumulate functions. Here's an example. rule "Header.TotalDuration" when h : BresHeader() n : Number() from accumulate( d : BresDetail(willSendToInvoice==true, uniqueConfID == h.uniqueConfID), sum(d.Duration) ) then h.TotalDuration = new Integer(n.longValue()); System.out.println("[TotalDuration] rule ran"); end If I run this once (reading in one message) in jUnit, the TotalDuration is calculated correctly. If I run it in tomcat (continuously reading messages) the values for TotalDuration are not correct and increase after each each pass (message is grabbed, rules ran, facts persisted, repeat) and I can't figure out why. Can anyone shed light on this behavior? -- View this message in context: http://drools.46999.n3.nabble.com/Unexpected-Accumulate-Collect-behavior-... Sent from the Drools: User forum mailing list archive at Nabble.com. _______________________________________________ rules-users mailing list rules-users(a)lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users