[jboss-jira] [JBoss JIRA] (JBRULES-3467) NullPointerException occurs when newInstance property is set to false for the KnowledgeAgentConfiguration

NullPointerException occurs when newInstance property is set to false for the KnowledgeAgentConfiguration --------------------------------------------------------------------------------------------------------- Key: JBRULES-3467 URL: https://issues.jboss.org/browse/JBRULES-3467 Project: Drools Issue Type: Bug Security Level: Public(Everyone can see) Components: drools-core (expert) Affects Versions: 5.2.0.Final Reporter: Amana Juricic Assignee: Mark Proctor When the "drools.agent.newInstance" property is set to false, the client application which uses the KnowledgeAgent to recognize changes/ updates performed in KnowledgeBase throws an exception. It is thrown after changing a temporal rule and building the package: Exception in thread "main" org.drools.RuntimeDroolsException: Unexpected exception executing action org.drools.rule.SlidingTimeWindow$BehaviorExpireWMAction@5e53bbfa at org.drools.common.AbstractWorkingMemory.executeQueuedActions(AbstractWorkingMemory.java:1001) at org.drools.common.AbstractWorkingMemory.fireAllRules(AbstractWorkingMemory.java:734) at org.drools.common.AbstractWorkingMemory.fireAllRules(AbstractWorkingMemory.java:701) at org.drools.impl.StatefulKnowledgeSessionImpl.fireAllRules(StatefulKnowledgeSessionImpl.java:218) at com.sample.ExecutarAgente.main(ExecutarAgente.java:62) Caused by: java.lang.NullPointerException at org.drools.rule.SlidingTimeWindow.isExpired(SlidingTimeWindow.java:192) at org.drools.rule.SlidingTimeWindow.expireTuples(SlidingTimeWindow.java:161) *We are creating a test case to reproduce this bug.