[jboss-jira] [JBoss JIRA] Resolved: (JBRULES-2101) Intermittant NullPointerException when invoking StatefulSession.asyncUpdate() while maintainTms==true

Intermittant NullPointerException when invoking StatefulSession.asyncUpdate() while maintainTms==true ----------------------------------------------------------------------------------------------------- Key: JBRULES-2101 URL: https://issues.jboss.org/browse/JBRULES-2101 Project: Drools Issue Type: Bug Security Level: Public(Everyone can see) Components: drools-core Affects Versions: 5.0.1.FINAL Environment: Ubuntu Jaunty Jackelope Linux version 2.6.27-11-generic (buildd@yellow) (gcc version 4.3.2 (Ubuntu 4.3.2-1ubuntu11) ) #1 SMP Wed Apr 1 20:53:41 UTC 2009 Multicore Reporter: Greg Barton Assignee: Mark Proctor After calling StatefulSession.asyncUpdate() the following exception occurs, but only when maintainTms==true in the rule configuration: Exception in thread "Thread-5" java.lang.NullPointerException at org.drools.common.AbstractWorkingMemory.update(AbstractWorkingMemory.java:1387) at org.drools.common.AbstractWorkingMemory.update(AbstractWorkingMemory.java:1350) at org.drools.concurrent.UpdateObject.execute(UpdateObject.java:46) at org.drools.concurrent.CommandExecutor.run(CommandExecutor.java:78) at java.lang.Thread.run(Thread.java:619) AbstractWorkingMemory.java line 1387 is wrapped in an if statement with condition "this.maintainTms" so setting maintainTms=false avoids the exception entirely. The NPE producing line is this: status = ((InternalFactHandle) factHandle).getEqualityKey().getStatus(); While encountering this problem the factHandle passed in to StatefulSession.asyncUpdate() was always non-null, so my guess is that the getEqualityKey() call returned null.