java.lang.NullPointerException druing Condition Evaluation ---------------------------------------------------------- Key: DROOLS-1223 URL: https://issues.jboss.org/browse/DROOLS-1223 Project: Drools Issue Type: Bug Affects Versions: 6.3.0.Final, 6.4.0.Final Reporter: Rodrigo Doria Medina Assignee: Mario Fusco {panel:title=Code} Caused by: java.lang.NullPointerException at ConditionEvaluator2afa7f52e3ae42c98bf357b4d12bd2f2.evaluate(Unknown Source) at org.drools.core.rule.constraint.MvelConstraint.evaluate(MvelConstraint.java:258) at org.drools.core.rule.constraint.MvelConstraint.isAllowed(MvelConstraint.java:214) at org.drools.core.reteoo.AlphaNode.modifyObject(AlphaNode.java:146) at org.drools.core.reteoo.CompositeObjectSinkAdapter.doPropagateModifyObject(CompositeObjectSinkAdapter.java:504) at org.drools.core.reteoo.CompositeObjectSinkAdapter.propagateModifyObject(CompositeObjectSinkAdapter.java:434) at org.drools.core.reteoo.AlphaNode.modifyObject(AlphaNode.java:147) at org.drools.core.reteoo.CompositeObjectSinkAdapter.doPropagateModifyObject(CompositeObjectSinkAdapter.java:504) at org.drools.core.reteoo.CompositeObjectSinkAdapter.propagateModifyObject(CompositeObjectSinkAdapter.java:434) at org.drools.core.reteoo.AlphaNode.modifyObject(AlphaNode.java:147) at org.drools.core.reteoo.CompositeObjectSinkAdapter.doPropagateModifyObject(CompositeObjectSinkAdapter.java:504) at org.drools.core.reteoo.CompositeObjectSinkAdapter.propagateModifyObject(CompositeObjectSinkAdapter.java:434) at org.drools.core.reteoo.AlphaNode.modifyObject(AlphaNode.java:147) at org.drools.core.reteoo.CompositeObjectSinkAdapter.doPropagateModifyObject(CompositeObjectSinkAdapter.java:504) at org.drools.core.reteoo.CompositeObjectSinkAdapter.propagateModifyObject(CompositeObjectSinkAdapter.java:434) at org.drools.core.reteoo.ObjectTypeNode.modifyObject(ObjectTypeNode.java:359) at org.drools.core.reteoo.EntryPointNode.propagateModify(EntryPointNode.java:249) at org.drools.core.phreak.PropagationEntry$Update.execute(PropagationEntry.java:150) at org.drools.core.phreak.SynchronizedPropagationList.flush(SynchronizedPropagationList.java:78) at org.drools.core.phreak.SynchronizedPropagationList.flush(SynchronizedPropagationList.java:68) at org.drools.core.impl.StatefulKnowledgeSessionImpl.flushPropagations(StatefulKnowledgeSessionImpl.java:2011) at org.drools.core.phreak.RuleExecutor.fire(RuleExecutor.java:128) at org.drools.core.phreak.RuleExecutor.evaluateNetworkAndFire(RuleExecutor.java:74) at org.drools.core.common.DefaultAgenda.fireNextItem(DefaultAgenda.java:1007) at org.drools.core.common.DefaultAgenda.fireLoop(DefaultAgenda.java:1350) at org.drools.core.common.DefaultAgenda.fireAllRules(DefaultAgenda.java:1288) at org.drools.core.impl.StatefulKnowledgeSessionImpl.internalFireAllRules(StatefulKnowledgeSessionImpl.java:1306) at org.drools.core.impl.StatefulKnowledgeSessionImpl.fireAllRules(StatefulKnowledgeSessionImpl.java:1297) at org.drools.core.impl.StatefulKnowledgeSessionImpl.fireAllRules(StatefulKnowledgeSessionImpl.java:1278) {panel} This happens when running more than once the same piece of data. (It happens from the second time). I have no clue what could that be. When running the first time everything computes as expected. Thanks!