CEP Operators in Rules failing to compile when getting PKG ---------------------------------------------------------- Key: DROOLS-243 URL: https://issues.jboss.org/browse/DROOLS-243 Project: Drools Issue Type: Bug Security Level: Public(Everyone can see) Affects Versions: 5.5.0.Final Reporter: Demian Calcaprina Assignee: Mario Fusco Priority: Critical Fix For: 5.5.1.Final, 6.0.0.Final The issue is described in the following community post: http://drools.46999.n3.nabble.com/Problem-with-PKG-from-guvnor-tc4025687.... This code can reproduce it: KnowledgeBaseConfiguration config = KnowledgeBaseFactory.newKnowledgeBaseConfiguration(); config.setOption( EventProcessingOption.STREAM ); KnowledgeBase kbase = KnowledgeBaseFactory.newKnowledgeBase(config); KnowledgeAgentConfiguration aconf = KnowledgeAgentFactory .newKnowledgeAgentConfiguration(); aconf.setProperty("drools.agent.scanDirectories", "true"); aconf.setProperty("drools.agent.scanResources", "true"); aconf.setProperty("drools.agent.newInstance", "false"); KnowledgeAgent kagent = KnowledgeAgentFactory.newKnowledgeAgent("MortgageAgent", kbase, aconf); Resource changeset = ResourceFactory.newClassPathResource( "cs.xml"); kagent.applyChangeSet(changeset); KnowledgeBase kbase2 = kagent.getKnowledgeBase(); Creating a changeset that points to a binary package in guvnor, with a rules which uses the temporal operator. For example, somthing like this: when myfact: EventA( main > 21 ) over window:length (1) myfact2 : EventA( main <= 21 , this before myfact ) over window:length (2) What is happening in that when it tries to compare the temporal distance, it will throw a NPE: Caused by: java.lang.NullPointerException at org.drools.base.evaluators.BeforeEvaluatorDefinition$BeforeEvaluator.getInterval(BeforeEvaluatorDefinition.java:268) [drools-core-5.5.0.Final.jar:5.5.0.Final] at org.drools.rule.constraint.EvaluatorConstraint.getInterval(EvaluatorConstraint.java:100) [drools-core-5.5.0.Final.jar:5.5.0.Final] at org.drools.reteoo.builder.BuildUtils.gatherTemporalRelationships(BuildUtils.java:326) [drools-core-5.5.0.Final.jar:5.5.0.Final] at org.drools.reteoo.builder.BuildUtils.calculateTemporalDistance(BuildUtils.java:292) [drools-core-5.5.0.Final.jar:5.5.0.Final] at org.drools.reteoo.builder.ReteooRuleBuilder.addRule(ReteooRuleBuilder.java:119) [drools-core-5.5.0.Final.jar:5.5.0.Final] at org.drools.reteoo.ReteooBuilder.addRule(ReteooBuilder.java:113) [drools-core-5.5.0.Final.jar:5.5.0.Final] at org.drools.reteoo.ReteooRuleBase.addRule(ReteooRuleBase.java:445) [drools-core-5.5.0.Final.jar:5.5.0.Final]