NPE when updating fact ---------------------- Key: JBRULES-3190 URL: https://issues.jboss.org/browse/JBRULES-3190 Project: Drools Issue Type: Bug Security Level: Public (Everyone can see) Affects Versions: 5.3.0.Beta1 Reporter: Tomáš Schlosser Assignee: Mark Proctor Take the example project from JBRULES-2887 and run it. You'll get this exception: Exceuting ruleorg.drools.runtime.rule.ConsequenceException: rule: MESSAGE_HELLO at org.drools.runtime.rule.impl.DefaultConsequenceExceptionHandler.handleException(DefaultConsequenceExceptionHandler.java:39) at org.drools.common.DefaultAgenda.fireActivation(DefaultAgenda.java:1093) at org.drools.common.DefaultAgenda.fireNextItem(DefaultAgenda.java:1022) at org.drools.common.DefaultAgenda.fireAllRules(DefaultAgenda.java:1243) at org.drools.common.AbstractWorkingMemory.fireAllRules(AbstractWorkingMemory.java:733) at org.drools.common.AbstractWorkingMemory.fireAllRules(AbstractWorkingMemory.java:699) at org.drools.impl.StatefulKnowledgeSessionImpl.fireAllRules(StatefulKnowledgeSessionImpl.java:218) at com.sample.DroolsTest.main(DroolsTest.java:41) Caused by: java.lang.NullPointerException at org.drools.reteoo.ReteooWorkingMemory$EvaluateResultConstraints.execute(ReteooWorkingMemory.java:576) at org.drools.common.PropagationContextImpl.evaluateActionQueue(PropagationContextImpl.java:265) at org.drools.common.NamedEntryPoint.update(NamedEntryPoint.java:465) at org.drools.common.NamedEntryPoint.update(NamedEntryPoint.java:365) at org.drools.base.DefaultKnowledgeHelper.update(DefaultKnowledgeHelper.java:294) at com.sample.Rule_MESSAGE_HELLO_0.defaultConsequence(Rule_MESSAGE_HELLO_0.java:8) at com.sample.Rule_MESSAGE_HELLO_0DefaultConsequenceInvoker.evaluate(Rule_MESSAGE_HELLO_0DefaultConsequenceInvoker.java:27) at org.drools.common.DefaultAgenda.fireActivation(DefaultAgenda.java:1083) ... 6 more -- This message is automatically generated by JIRA. For more information on JIRA, see: http://www.atlassian.com/software/jira