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<div>The following block of code inside org.drools.base.ClassFieldReader is throwing an exception and I don’t quite understand why. Can anyone advise? Thanks in advance.</div>
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<div><font face="Courier New, monospace" size="2" color="#7F0055"><b>public</b><font color="#000000"> </font><b>int</b><font color="#000000"> getIntValue(InternalWorkingMemory workingMemory, </font></font></div>
<div style="padding-left: 36pt; text-indent: 36pt; "><font face="Courier New, monospace" size="2" color="#7F0055"><b>final</b><font color="#000000"> Object object) {</font></font></div>
<div><font face="Courier New, monospace" size="2"><span style="background-color:#C0C0C0"> </span><font color="#7F0055"><span style="background-color:#C0C0C0"><b>return</b></span></font><span style="background-color:#C0C0C0"> </span><font color="#7F0055"><span style="background-color:#C0C0C0"><b>this</b></span></font><span style="background-color:#C0C0C0">.</span><font color="#0000C0"><span style="background-color:#C0C0C0">reader</span></font><span style="background-color:#C0C0C0">.getIntValue(
workingMemory,</span> </font></div>
<div style="padding-left: 36pt; text-indent: 36pt; "><font face="Courier New, monospace" size="2">object );</font></div>
<div><font face="Courier New, monospace" size="2"> }</font></div>
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<div>Object is of type Long, with value = 0, when the throw happens, and workingMemory is null (having been explicitly passed in as null by the method two layers up in the stack:</div>
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<div><font face="Courier New, monospace" size="2" color="#7F0055"><b>public</b><font color="#000000"> </font><b>boolean</b><font color="#000000"> isAllowed(</font><b>final</b><font color="#000000"> InternalReadAccessor readAccessor,</font></font></div>
<div><font face="Courier New, monospace" size="2"> <font color="#7F0055"><b>final</b></font> InternalFactHandle handle,</font></div>
<div><font face="Courier New, monospace" size="2"> <font color="#7F0055"><b>final</b></font> InternalWorkingMemory workingMemoiry,</font></div>
<div><font face="Courier New, monospace" size="2"> <font color="#7F0055"><b>final</b></font> ContextEntry context) {</font></div>
<div style="padding-left: 36pt; text-indent: 36pt; "><font face="Courier New, monospace" size="2" color="#7F0055"><span style="background-color:#C0C0C0"><b>return</b></span><font color="#000000"><span style="background-color:#C0C0C0"> </span></font><span style="background-color:#C0C0C0"><b>this</b></span><font color="#000000"><span style="background-color:#C0C0C0">.</span></font><font color="#0000C0"><span style="background-color:#C0C0C0">evaluator</span></font><font color="#000000"><span style="background-color:#C0C0C0">.evaluate(
</span></font><span style="background-color:#C0C0C0"><b>null</b></span><font color="#000000"><span style="background-color:#C0C0C0">,</span></font></font></div>
<div><font face="Courier New, monospace" size="2"> <font color="#7F0055"><b>this</b></font>.<font color="#0000C0">readAccessor</font>,</font></div>
<div><font face="Courier New, monospace" size="2"> handle.getObject(),</font></div>
<div><font face="Courier New, monospace" size="2"> <font color="#7F0055"><b>this</b></font>.<font color="#0000C0">field</font> );</font></div>
<div><font face="Courier New, monospace" size="2"> }</font></div>
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<div>While sitting on the breakpoint in getIntValue, the live call stack is as follows:</div>
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<div>ClassFieldReader.getIntValue(InternalWorkingMemory, Object) line: 164 </div>
<div>ComparableEvaluatorsDefinition$IntegerGreaterEvaluator.evaluate(InternalWorkingMemory, InternalReadAccessor, Object, FieldValue) line: 1881 </div>
<div>LiteralRestriction.isAllowed(InternalReadAccessor, InternalFactHandle, InternalWorkingMemory, ContextEntry) line: 92 </div>
<div>LiteralConstraint.isAllowed(InternalFactHandle, InternalWorkingMemory, ContextEntry) line: 109 </div>
<div>AccumulateNode.evaluateResultConstraints(LeftTuple, PropagationContext, InternalWorkingMemory, AccumulateNode$AccumulateMemory, AccumulateNode$AccumulateContext) line: 498 </div>
<div>AccumulateNode.assertLeftTuple(LeftTuple, PropagationContext, InternalWorkingMemory) line: 197 </div>
<div>SingleLeftTupleSinkAdapter.doPropagateAssertLeftTuple(PropagationContext, InternalWorkingMemory, LeftTuple) line: 117 </div>
<div>SingleLeftTupleSinkAdapter.propagateAssertLeftTuple(LeftTuple, RightTuple, PropagationContext, InternalWorkingMemory, boolean) line: 28 </div>
<div>JoinNode.assertObject(InternalFactHandle, PropagationContext, InternalWorkingMemory) line: 175 </div>
<div>CompositeObjectSinkAdapter.doPropagateAssertObject(InternalFactHandle, PropagationContext, InternalWorkingMemory, ObjectSink) line: 366 </div>
<div>CompositeObjectSinkAdapter.propagateAssertObject(InternalFactHandle, PropagationContext, InternalWorkingMemory) line: 349 </div>
<div>AlphaNode.assertObject(InternalFactHandle, PropagationContext, InternalWorkingMemory) line: 147 </div>
<div>SingleObjectSinkAdapter.propagateAssertObject(InternalFactHandle, PropagationContext, InternalWorkingMemory) line: 42 </div>
<div>AlphaNode.assertObject(InternalFactHandle, PropagationContext, InternalWorkingMemory) line: 147 </div>
<div>SingleObjectSinkAdapter.propagateAssertObject(InternalFactHandle, PropagationContext, InternalWorkingMemory) line: 42 </div>
<div>AlphaNode.assertObject(InternalFactHandle, PropagationContext, InternalWorkingMemory) line: 147 </div>
<div>CompositeObjectSinkAdapter.doPropagateAssertObject(InternalFactHandle, PropagationContext, InternalWorkingMemory, ObjectSink) line: 366 </div>
<div>CompositeObjectSinkAdapter.propagateAssertObject(InternalFactHandle, PropagationContext, InternalWorkingMemory) line: 342 </div>
<div>ObjectTypeNode.assertObject(InternalFactHandle, PropagationContext, InternalWorkingMemory) line: 184 </div>
<div>EntryPointNode.assertObject(InternalFactHandle, PropagationContext, ObjectTypeConf, InternalWorkingMemory) line: 146 </div>
<div>ReteooStatefulSession(AbstractWorkingMemory).insert(InternalFactHandle, Object, Rule, Activation, ObjectTypeConf) line: 1066 </div>
<div>ReteooStatefulSession(AbstractWorkingMemory).insert(Object, boolean, boolean, Rule, Activation) line: 1022 </div>
<div>DefaultKnowledgeHelper.insert(Object, boolean) line: 103 </div>
<div>DefaultKnowledgeHelper.insert(Object) line: 97 </div>
<div>Rule_RS6601_3_2_0.consequence(KnowledgeHelper, TransactionDetail, FactHandle, Double, FactHandle, DealRiskCategoryEnum$Enum, FactHandle, ExitStrategyTypeEnum$Enum, FactHandle, Short, FactHandle, Short, FactHandle) line: 32 </div>
<div>Rule_RS6601_3_2_0ConsequenceInvoker.evaluate(KnowledgeHelper, WorkingMemory) line: 42 </div>
<div>DefaultAgenda.fireActivation(Activation) line: 934 </div>
<div>DefaultAgenda.fireNextItem(AgendaFilter) line: 885 </div>
<div>DefaultAgenda.fireAllRules(AgendaFilter, int) line: 1082 </div>
<div>ReteooStatefulSession(AbstractWorkingMemory).fireAllRules(AgendaFilter, int) line: 682 </div>
<div>ReteooStatefulSession(AbstractWorkingMemory).fireAllRules() line: 649 </div>
<div>StatefulKnowledgeSessionImpl.fireAllRules() line: 177 </div>
<div>RuleBase.runTestCase(LoanFile, String, int, Logger) line: 116 </div>
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<div style="margin-top: 5pt; margin-bottom: 5pt; "><font face="Cambria, serif" size="4" color="#4F81BD"><b>Tom Murphy<br>
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Wells Fargo HCFG - CORE Deal Decisioning Platform<br>
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