Mark,<br><br>The object being retracted currently has no hashcode and equals, therefore defaulting to the ones on Object. The reason I'm even retracting the object is so that I can assert it again to work around bug <a href="http://jira.jboss.com/jira/browse/JBRULES-614">
http://jira.jboss.com/jira/browse/JBRULES-614</a>. Therefore the reason I am retracting the object is because it has changed.<br><br>Is there a requirement to implement hashcode and equals? If so, does it have to be based on all fields of the pojo? My intent was to implement hashcode and equals, but only base them on the id fields of the class.
<br><br>-Chris<br><br><div><span class="gmail_quote">On 4/24/07, <b class="gmail_sendername">Mark Proctor</b> <<a href="mailto:mproctor@codehaus.org">mproctor@codehaus.org</a>> wrote:</span><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">
<div bgcolor="#ffffff" text="#000000">
Have you correctly implemented your equals and hashcode? Have you made
sure that the objects fields haven't changed between the assert and the
retract?<br>
<br>
Mark<br>
Chris West wrote:
<blockquote type="cite"><div><span class="e" id="q_112252da95038c4a_1">Hi,<br>
<br>
Using version 3.0.6 of jboss rules, while retracting an object, I get
the following:<br>
<br>
java.lang.NullPointerException<br>
at
org.drools.reteoo.beta.InstanceEqualConstrRightMemory.remove(Unknown
Source)<br>
at org.drools.reteoo.BetaMemory.remove
(Unknown Source)<br>
at org.drools.reteoo.NotNode.retractObject(Unknown Source)<br>
at org.drools.reteoo.ObjectSource.propagateRetractObject(Unknown
Source)<br>
at org.drools.reteoo.RightInputAdapterNode.retractTuple
(Unknown Source)<br>
at org.drools.reteoo.TupleSource.propagateRetractTuple(Unknown
Source)<br>
at org.drools.reteoo.NotNode.retractTuple(Unknown Source)<br>
at org.drools.reteoo.TupleSource.propagateRetractTuple
(Unknown Source)<br>
at org.drools.reteoo.JoinNode.retractObject(Unknown Source)<br>
at org.drools.reteoo.ObjectSource.propagateRetractObject(Unknown
Source)<br>
at org.drools.reteoo.ObjectTypeNode.retractObject
(Unknown Source)
<br>
at org.drools.reteoo.Rete.retractObject(Unknown Source)<br>
at org.drools.reteoo.ReteooRuleBase.retractObject(Unknown Source)<br>
at org.drools.reteoo.ReteooWorkingMemory.doRetract(Unknown Source)<br>
at org.drools.common.AbstractWorkingMemory.retractObject(Unknown
Source)<br>
at org.drools.common.AbstractWorkingMemory.retractObject(Unknown
Source)<br>
at
ascc.rules.AbstractRulesCoordinator.statusChanged(AbstractRulesCoordinator.java
:354)<br>
at
ascc.rules.AbstractRulesCoordinator$1.statusChanged(AbstractRulesCoordinator.java:111)<br>
at
ascc.status.BaseStatusBoard.notifyChange(BaseStatusBoard.java:211)<br>
at ascc.status.BaseStatusBoard.notifyChange
(BaseStatusBoard.java:191)<br>
at
ascc.status.DefaultParkingStatusBoard.empty(DefaultParkingStatusBoard.java:318)<br>
at
ascc.spotting.DefaultSpottingCoordinator.computeInitialSpot(DefaultSpottingCoordinator.java:578)
<br>
at
ascc.spotting.DefaultSpottingCoordinator.statusCreated(DefaultSpottingCoordinator.java:827)<br>
at
ascc.status.BaseStatusBoard.notifyCreate(BaseStatusBoard.java:100)<br>
at ascc.status.BaseStatusBoard.notifyCreate
(BaseStatusBoard.java:80)<br>
at
ascc.status.DefaultAirPlanStatusBoard.missionAssignmentComplete(DefaultAirPlanStatusBoard.java:479)<br>
at
ascc.missionassignment.Rule_6___Complete_mission_assignment_for_event_0.consequence
(Rule_6___Complete_mission_assignment_for_event_0.java:36)<br>
at
ascc.missionassignment.Rule_6___Complete_mission_assignment_for_event_0ConsequenceInvoker.evaluate(Rule_6___Complete_mission_assignment_for_event_0ConsequenceInvoker.java:24)
<br>
... 7 more<br>
<br>
Is there something I could be doing wrong? Is this a known bug?<br>
<br>
Thanks,<br>
-Chris<br>
</span></div><pre><hr size="4" width="90%">
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</blockquote>
<br>
</div>
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