Sorry – forgot to add the nature of the exception – “java.lang.Long cannot be cast to java.lang.Integer”

Tom Murphy
Business Process Consultant
Wells Fargo HCFG - CORE Deal Decisioning Platform
800 S. Jordan Creek Parkway | West Des Moines, IA 50266
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_____________________________________________
From: Murphy, Tom E.
Sent: Monday, April 20, 2009 8:30 PM
To: 'rules-users@lists.jboss.org'
Subject: Question: Why is ClassFieldReader.getIntValue throwing in this scenario?

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.

public int getIntValue(InternalWorkingMemory workingMemory,

final Object object) {

return this.reader.getIntValue( workingMemory,

object );

}

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:

public boolean isAllowed(final InternalReadAccessor readAccessor,

final InternalFactHandle handle,

final InternalWorkingMemory workingMemoiry,

final ContextEntry context) {

return this.evaluator.evaluate( null,

this.readAccessor,

handle.getObject(),

this.field );

}

While sitting on the breakpoint in getIntValue, the live call stack is as follows:

ClassFieldReader.getIntValue(InternalWorkingMemory, Object) line: 164

ComparableEvaluatorsDefinition$IntegerGreaterEvaluator.evaluate(InternalWorkingMemory, InternalReadAccessor, Object, FieldValue) line: 1881

LiteralRestriction.isAllowed(InternalReadAccessor, InternalFactHandle, InternalWorkingMemory, ContextEntry) line: 92

LiteralConstraint.isAllowed(InternalFactHandle, InternalWorkingMemory, ContextEntry) line: 109

AccumulateNode.evaluateResultConstraints(LeftTuple, PropagationContext, InternalWorkingMemory, AccumulateNode$AccumulateMemory, AccumulateNode$AccumulateContext) line: 498

AccumulateNode.assertLeftTuple(LeftTuple, PropagationContext, InternalWorkingMemory) line: 197

SingleLeftTupleSinkAdapter.doPropagateAssertLeftTuple(PropagationContext, InternalWorkingMemory, LeftTuple) line: 117

SingleLeftTupleSinkAdapter.propagateAssertLeftTuple(LeftTuple, RightTuple, PropagationContext, InternalWorkingMemory, boolean) line: 28

JoinNode.assertObject(InternalFactHandle, PropagationContext, InternalWorkingMemory) line: 175

CompositeObjectSinkAdapter.doPropagateAssertObject(InternalFactHandle, PropagationContext, InternalWorkingMemory, ObjectSink) line: 366

CompositeObjectSinkAdapter.propagateAssertObject(InternalFactHandle, PropagationContext, InternalWorkingMemory) line: 349

AlphaNode.assertObject(InternalFactHandle, PropagationContext, InternalWorkingMemory) line: 147

SingleObjectSinkAdapter.propagateAssertObject(InternalFactHandle, PropagationContext, InternalWorkingMemory) line: 42

AlphaNode.assertObject(InternalFactHandle, PropagationContext, InternalWorkingMemory) line: 147

SingleObjectSinkAdapter.propagateAssertObject(InternalFactHandle, PropagationContext, InternalWorkingMemory) line: 42

AlphaNode.assertObject(InternalFactHandle, PropagationContext, InternalWorkingMemory) line: 147

CompositeObjectSinkAdapter.doPropagateAssertObject(InternalFactHandle, PropagationContext, InternalWorkingMemory, ObjectSink) line: 366

CompositeObjectSinkAdapter.propagateAssertObject(InternalFactHandle, PropagationContext, InternalWorkingMemory) line: 342

ObjectTypeNode.assertObject(InternalFactHandle, PropagationContext, InternalWorkingMemory) line: 184

EntryPointNode.assertObject(InternalFactHandle, PropagationContext, ObjectTypeConf, InternalWorkingMemory) line: 146

ReteooStatefulSession(AbstractWorkingMemory).insert(InternalFactHandle, Object, Rule, Activation, ObjectTypeConf) line: 1066

ReteooStatefulSession(AbstractWorkingMemory).insert(Object, boolean, boolean, Rule, Activation) line: 1022

DefaultKnowledgeHelper.insert(Object, boolean) line: 103

DefaultKnowledgeHelper.insert(Object) line: 97

Rule_RS6601_3_2_0.consequence(KnowledgeHelper, TransactionDetail, FactHandle, Double, FactHandle, DealRiskCategoryEnum$Enum, FactHandle, ExitStrategyTypeEnum$Enum, FactHandle, Short, FactHandle, Short, FactHandle) line: 32

Rule_RS6601_3_2_0ConsequenceInvoker.evaluate(KnowledgeHelper, WorkingMemory) line: 42

DefaultAgenda.fireActivation(Activation) line: 934

DefaultAgenda.fireNextItem(AgendaFilter) line: 885

DefaultAgenda.fireAllRules(AgendaFilter, int) line: 1082

ReteooStatefulSession(AbstractWorkingMemory).fireAllRules(AgendaFilter, int) line: 682

ReteooStatefulSession(AbstractWorkingMemory).fireAllRules() line: 649

StatefulKnowledgeSessionImpl.fireAllRules() line: 177

RuleBase.runTestCase(LoanFile, String, int, Logger) line: 116