RE: [rules-users] NPE in RightTuple

Possibly, upon inspection I found an entity class with suspicious looking hashCode and equals methods (source generate equals/hashcode is still to hard for some people it seems). I'm trying to recreate a simple test case, to reproduce. What's the simplest rule to generate a RightTupleIndexHashTable? Will any attribute constraint do e.g.: BadClass($value : value) BadClass(value == $value) Thanks, -Jess From: rules-users-bounces(a)lists.jboss.org [mailto:rules-users-bounces@lists.jboss.org] On Behalf Of Edson Tirelli Sent: Wednesday, January 14, 2009 4:43 PM To: Rules Users List Subject: Re: [rules-users] NPE in RightTuple Looks like a bug. Can you please open a JIRA with a test case? My guess is that your rules are changing a fact attribute that is causing the equals()/hashcode() methods of the object to return a different result? []s Edson 2009/1/14 Evans, Jess <JEvans(a)collegeboard.org&gt; Does anyone know what this would be indicative of? I've seen it occur periodically at which point I have to discard the session. I flatten and assert my data, run the rules, and then retract the handles collected on assertion. I've ensured the fact handle parameter is never null. I have the stateful session wrapped in a synchronized business façade, so I don't think it should be a concurrency issue (unless I have a bug of course). I'm running Drools 5 M4. java.lang.NullPointerException at org.drools.util.RightTupleIndexHashTable.remove(RightTupleIndexHashTable.java:224) at org.drools.reteoo.JoinNode.retractRightTuple(JoinNode.java:204) at org.drools.reteoo.ObjectTypeNode.retractObject(ObjectTypeNode.java:210) at org.drools.reteoo.EntryPointNode.retractObject(EntryPointNode.java:190) at org.drools.common.AbstractWorkingMemory.retract(AbstractWorkingMemory.java:1078) at org.drools.common.AbstractWorkingMemory.retract(AbstractWorkingMemory.java:1045) _______________________________________________ rules-users mailing list rules-users(a)lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users -- Edson Tirelli JBoss Drools Core Development JBoss, a division of Red Hat @ www.jboss.com