Hi all, In our business, most of the facts have a time-stamp attribute. In our business-logic, we often try to analyze the relations between facts using these attributes. For example: 1) finding two adjacent labResults with an increasing value 2) checking whether 3 facts are consecutive 3) counting the number of facts fulfilling a specific constraint within a specific time window. We were happy to read (in the blog) about the new CEP feature which is about to be added to drools 5.0. * Where can we find more detailed description of CEP? * Can we use CEP in a stateless session? * Can we apply temporal-reasoning on the predefined time-stamp attributes, and not on the fact assertion time? For example, assuming we have a history of labResults, can we configure the event to use the exisiting effectiveTime attribute? Can we avoid changing the session timer from the calling application in order to do that? * Can we use CEP to analyze the data in the examples above? Many thanks for the help, Yoni -- View this message in context: http://www.nabble.com/using-CEP-tp18797169p18797169.html Sent from the drools - user mailing list archive at Nabble.com.