Crash when node is deleted from query node ------------------------------------------ Key: DROOLS-844 URL: https://issues.jboss.org/browse/DROOLS-844 Project: Drools Issue Type: Bug Components: core engine Affects Versions: 6.4.0.Final, 7.0.0.Beta1 Reporter: Fabian Meyer Assignee: Mario Fusco Priority: Critical Fix For: 6.4.0.Beta1 When a left delete is performed on a PhreakQueryNode, the fact handle of the left tuple might be null, resulting in a NullPointerException. Exception in thread "Thread-6" java.lang.NullPointerException at org.drools.core.phreak.PhreakQueryNode.doLeftDeletes(PhreakQueryNode.java:176) at org.drools.core.phreak.PhreakQueryNode.doNode(PhreakQueryNode.java:46) at org.drools.core.phreak.RuleNetworkEvaluator.evalQueryNode(RuleNetworkEvaluator.java:460) at org.drools.core.phreak.RuleNetworkEvaluator.innerEval(RuleNetworkEvaluator.java:360) at org.drools.core.phreak.RuleNetworkEvaluator.doRiaNode(RuleNetworkEvaluator.java:598) at org.drools.core.phreak.RuleNetworkEvaluator.evalBetaNode(RuleNetworkEvaluator.java:524) at org.drools.core.phreak.RuleNetworkEvaluator.innerEval(RuleNetworkEvaluator.java:336) at org.drools.core.phreak.RuleNetworkEvaluator.outerEval(RuleNetworkEvaluator.java:166) at org.drools.core.phreak.RuleNetworkEvaluator.evaluateNetwork(RuleNetworkEvaluator.java:123) at org.drools.core.phreak.RuleExecutor.reEvaluateNetwork(RuleExecutor.java:194) at org.drools.core.phreak.RuleExecutor.evaluateNetworkAndFire(RuleExecutor.java:73) at org.drools.core.common.DefaultAgenda.fireNextItem(DefaultAgenda.java:973) at org.drools.core.common.DefaultAgenda.fireUntilHalt(DefaultAgenda.java:1251) at org.drools.core.impl.StatefulKnowledgeSessionImpl.fireUntilHalt(StatefulKnowledgeSessionImpl.java:1353) at org.drools.core.impl.StatefulKnowledgeSessionImpl.fireUntilHalt(StatefulKnowledgeSessionImpl.java:1331)