Re: [rules-users] threw error java.lang.ClassCastException: org.drools.reteoo.FromNode$FromMemory cannot be cast to org.drools.reteoo.BetaMemory

knowledge-api-5.5.0.Final.jar knowledge-internal-api-5.5.0.Final.jar drools-compiler-5.5.1-SNAPSHOT.jar drools-core-5.5.1-SNAPSHOT.jar 4 times kb unlock/unlock is due to 4 objects inserted into session. After 5th insert it crashes. 5 objects are always inserted into session before fireAllRules is invoked. It does'nt crash if no rule is added/updated. RuleRunner inserts them - 5th object is the actual model object against which all rules are run http-8084-2 and 2967417 are same; i just rename thread once I've serialized the model object to take the id. I've noticed that the four times lock/unlock happens immediately after KB is modified (ie. rule is removed and added). General flow of RuleRunner is ... read xml payload from HttpServletRequest create model object from xml set thread name to model.id get lock on kba (kba is my wrapper class to control access to kb) get stateful session session.insert( obj1 ) session.insert( obj2 ) session.insert( obj3 ) session.insert( obj4 ) fact_handle = session.insert( model ) iterate through a list of agenda and set focus to agenda sesssion.fireAllRules() retract fact_handle from session dispose session release lock on kba Ejaz -- View this message in context: http://drools.46999.n3.nabble.com/threw-error-java-lang-ClassCastExceptio... Sent from the Drools: User forum mailing list archive at Nabble.com.