not sure it's related, but it should be window:length(24) - notice the ":" ! are you checking the KnowledgeBuilder.hasErrors() method?
Otherwise, could you please post a full failing test case, together with the version you are using ? Thanks! Davide On 04/18/2013 08:59 AM, burmanator wrote: > I am getting a null pointer exception when I try and use a sliding window. > > The rule I'm trying to run is: > > $primary : Foo($name : Name) over window length(24) > > $prev : ArrayList(size<1) from collect ( Foo(Name == $name, this before > $primary)) > > I am trying to look at the last 24 Foo events and have the rule only trigger > when an event with that name hasn't been seen before. I also get a null > pointer when I try and do a time window and no Foo events happen within the > window. Shouldn't the rule just not fire? > > > > -- > View this message in context: > http://drools.46999.n3.nabble.com/Fusion-Null-pointer-exception-when-using-sliding-windows-tp4023410.html > Sent from the Drools: User forum mailing list archive at Nabble.com. > _______________________________________________ > rules-users mailing list > [email protected] > https://lists.jboss.org/mailman/listinfo/rules-users > _______________________________________________ rules-users mailing list [email protected] https://lists.jboss.org/mailman/listinfo/rules-users
