[jboss-jira] [JBoss JIRA] Resolved: (JBRULES-2331) StatefulKnowledgeSession unmarshal fails with NPE

StatefulKnowledgeSession unmarshal fails with NPE ------------------------------------------------- Key: JBRULES-2331 URL: https://jira.jboss.org/browse/JBRULES-2331 Project: Drools Issue Type: Bug Security Level: Public(Everyone can see) Components: drools-core (expert) Affects Versions: 5.0.1.FINAL, 5.1.0.M1 Environment: Windows, JDK 1.6 Reporter: Justin Waugh Assignee: Edson Tirelli Fix For: 5.1.0.FINAL Attachments: test.zip The following rule being present in the knowledge base causes the StatefulKnowledgeSession to fail to unmarshall with an NPE: package test.drl rule "dummy_rule" when eval( false ) then end Here is the stack trace: java.lang.NullPointerException at org.drools.marshalling.impl.InputMarshaller.readLeftTuple(InputMarshaller.java:440) at org.drools.marshalling.impl.InputMarshaller.readFactHandles(InputMarshaller.java:345) at org.drools.marshalling.impl.InputMarshaller.readSession(InputMarshaller.java:207) at org.drools.marshalling.impl.DefaultMarshaller.unmarshall(DefaultMarshaller.java:75) at org.drools.marshalling.impl.DefaultMarshaller.unmarshall(DefaultMarshaller.java:47) at test.DroolsSerializationBugTest.testDroolsSerializationBug(DroolsSerializationBugTest.java:87) at test.DroolsSerializationBugTest.main(DroolsSerializationBugTest.java:28) Test case attached. Fails against 5.0.1 and 5.1.0M1