<br> 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?<br>
<br> []s<br> Edson<br><br><div class="gmail_quote">2009/1/14 Evans, Jess <span dir="ltr"><<a href="mailto:JEvans@collegeboard.org">JEvans@collegeboard.org</a>></span><br><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">
<div link="blue" vlink="purple" lang="EN-US">
<div>
<p>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 fa�ade,
so I don't think it should be a concurrency issue (unless I have a bug of
course). I'm running Drools 5 M4.</p>
<p> </p>
<p>java.lang.NullPointerException</p>
<p> at org.drools.util.RightTupleIndexHashTable.remove(RightTupleIndexHashTable.java:224)</p>
<p> at
org.drools.reteoo.JoinNode.retractRightTuple(JoinNode.java:204)</p>
<p> at
org.drools.reteoo.ObjectTypeNode.retractObject(ObjectTypeNode.java:210)</p>
<p> at org.drools.reteoo.EntryPointNode.retractObject(EntryPointNode.java:190)</p>
<p> at
org.drools.common.AbstractWorkingMemory.retract(AbstractWorkingMemory.java:1078)</p>
<p> at
org.drools.common.AbstractWorkingMemory.retract(AbstractWorkingMemory.java:1045)</p>
</div>
</div>
<br>_______________________________________________<br>
rules-users mailing list<br>
<a href="mailto:rules-users@lists.jboss.org">rules-users@lists.jboss.org</a><br>
<a href="https://lists.jboss.org/mailman/listinfo/rules-users" target="_blank">https://lists.jboss.org/mailman/listinfo/rules-users</a><br>
<br></blockquote></div><br><br clear="all"><br>-- <br> Edson Tirelli<br> JBoss Drools Core Development<br> JBoss, a division of Red Hat @ <a href="http://www.jboss.com">www.jboss.com</a><br>