[rules-users] Error accumulate function

[nestabur]

Hi All,

I'm getting an error when firing the rule using the accumulate function:

Number(intValue >= 1) from accumulate( fact() over window:time(1d)  from
entry-point "MyEntryPoint", init( int mytotal = 0; ),action( mytotal++;
),reverse( mytotal--; ),result( new Integer(mytotal) ))

The error is:

org.drools.RuntimeDroolsException: [Error: variable already defined within
scope: class java.lang.Integer mytotal]
[Near : {... Unknown ....}]
             ^
[Line: 1, Column: 0]
	at org.drools.rule.Accumulate.init(Accumulate.java:144)
	at
org.drools.reteoo.AccumulateNode.assertLeftTuple(AccumulateNode.java:142)
	at
org.drools.reteoo.SingleLeftTupleSinkAdapter.doPropagateAssertLeftTuple(SingleLeftTupleSinkAdapter.java:117)
	at
org.drools.reteoo.SingleLeftTupleSinkAdapter.propagateAssertLeftTuple(SingleLeftTupleSinkAdapter.java:28)
	at org.drools.reteoo.JoinNode.assertObject(JoinNode.java:175)
	at
org.drools.reteoo.SingleObjectSinkAdapter.propagateAssertObject(SingleObjectSinkAdapter.java:42)
	at
org.drools.reteoo.PropagationQueuingNode$AssertAction.execute(PropagationQueuingNode.java:326)
	at
org.drools.reteoo.PropagationQueuingNode.propagateActions(PropagationQueuingNode.java:221)
	at
org.drools.reteoo.PropagationQueuingNode$PropagateAction.execute(PropagationQueuingNode.java:394)
	at
org.drools.common.AbstractWorkingMemory.executeQueuedActions(AbstractWorkingMemory.java:1486)
	at org.drools.common.NamedEntryPoint.insert(NamedEntryPoint.java:158)
	at org.drools.common.NamedEntryPoint.insert(NamedEntryPoint.java:122)
	at org.drools.common.NamedEntryPoint.insert(NamedEntryPoint.java:80)
	at org.drools.common.NamedEntryPoint.insert(NamedEntryPoint.java:28)
	at
com.s2grupo.triton.service.impl.TemporalCorrelatorServiceImpl.insertFact(TemporalCorrelatorServiceImpl.java:95)
	at
com.s2grupo.triton.jms.impl.JmsMessageListenerImpl.onMessage(JmsMessageListenerImpl.java:98)
	at
org.apache.activemq.ActiveMQMessageConsumer.dispatch(ActiveMQMessageConsumer.java:1021)
	at
org.apache.activemq.ActiveMQSessionExecutor.dispatch(ActiveMQSessionExecutor.java:122)
	at
org.apache.activemq.ActiveMQSessionExecutor.iterate(ActiveMQSessionExecutor.java:192)
	at
org.apache.activemq.thread.PooledTaskRunner.runTask(PooledTaskRunner.java:122)
	at
org.apache.activemq.thread.PooledTaskRunner$1.run(PooledTaskRunner.java:43)
	at
java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
	at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
	at java.lang.Thread.run(Thread.java:619)
Caused by: [Error: variable already defined within scope: class
java.lang.Integer mytotal]
[Near : {... Unknown ....}]
             ^
[Line: 1, Column: 0]
	at
org.drools.base.mvel.DroolsMVELFactory.createVariable(DroolsMVELFactory.java:252)
	at
org.mvel2.ast.TypedVarNode.getReducedValueAccelerated(TypedVarNode.java:68)
	at org.mvel2.MVELRuntime.execute(MVELRuntime.java:85)
	at
org.mvel2.compiler.CompiledExpression.getValue(CompiledExpression.java:107)
	at org.mvel2.MVEL.executeExpression(MVEL.java:978)
	at org.drools.base.mvel.MVELAccumulator.init(MVELAccumulator.java:134)
	at org.drools.rule.Accumulate.init(Accumulate.java:138)
	... 23 more

Could anyone help me?

Thanks,

Nestor

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