[rules-users] mvel bug ??

[Edson Tirelli]

   Can you please provide a test case? I will look into it asap.

   []s
   Edson

2007/8/31, hypnosat7 <ablarbi at yahoo.fr>:
>
>
> Hi,
>
>    I have a variable declaration as bellow :
>
> >list:Variable() from ruleApp.getVariable("variableName")
>
> and this is the result :
> Exception in thread "AWT-EventQueue-0" org.mvel.CompileException: cannot
> invoke method
>         at
> org.mvel.optimizers.impl.refl.MethodAccessor.getValue(MethodAccessor.java
> :54)
>         at
> org.mvel.optimizers.impl.refl.VariableAccessor.getValue(
> VariableAccessor.java:39)
>         at
> org.mvel.ast.VariableDeepPropertyNode.getReducedValueAccelerated(
> VariableDeepPropertyNode.java:26)
>         at
> org.mvel.ast.PropertyASTNode.getReducedValueAccelerated(
> PropertyASTNode.java:19)
>         at org.mvel.MVELRuntime.execute(MVELRuntime.java:88)
>         at org.mvel.CompiledExpression.getValue(CompiledExpression.java
> :99)
>         at org.mvel.MVEL.executeExpression(MVEL.java:236)
>         at
> org.drools.base.dataproviders.MVELDataProvider.getResults(
> MVELDataProvider.java:45)
>         at org.drools.reteoo.FromNode.assertTuple(FromNode.java:61)
>         at
> org.drools.reteoo.CompositeTupleSinkAdapter.createAndPropagateAssertTuple(
> CompositeTupleSinkAdapter.java:73)
>         at
> org.drools.reteoo.LeftInputAdapterNode.assertObject(
> LeftInputAdapterNode.java:131)
>         at
> org.drools.reteoo.SingleObjectSinkAdapter.propagateAssertObject(
> SingleObjectSinkAdapter.java:20)
>         at org.drools.reteoo.ObjectTypeNode.assertObject(
> ObjectTypeNode.java:160)
>         at org.drools.reteoo.Rete.assertObject(Rete.java:176)
>         at org.drools.reteoo.ReteooRuleBase.assertObject(
> ReteooRuleBase.java:196)
>         at
>
> org.drools.reteoo.ReteooWorkingMemory$WorkingMemoryReteAssertAction.execute
> (ReteooWorkingMemory.java:164)
>         at
> org.drools.common.AbstractWorkingMemory.executeQueuedActions(
> AbstractWorkingMemory.java:1260)
>         at
> org.drools.common.AbstractWorkingMemory.insert(AbstractWorkingMemory.java
> :864)
>         at
> org.drools.common.AbstractWorkingMemory.insert(AbstractWorkingMemory.java
> :826)
>         at
> org.drools.common.AbstractWorkingMemory.insert(AbstractWorkingMemory.java
> :627)
>         at
> mcmipih.rules.rules.integration.drools.ExecutionContext.executeRuleFlow(
> ExecutionContext.java:54)
>         at
> mcmipih.rules.demo.service.DemoRuleService.validerRumList(
> DemoRuleService.java:50)
>         at
>
> mcmipih.rules.demo.service.DemoRuleService$$FastClassByCGLIB$$beeddc5a.invoke
> (<generated>)
>         at net.sf.cglib.proxy.MethodProxy.invoke(MethodProxy.java:149)
>         at
>
> org.springframework.aop.framework.Cglib2AopProxy$CglibMethodInvocation.invokeJoinpoint
> (Cglib2AopProxy.java:693)
>         at
> org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(
> ReflectiveMethodInvocation.java:139)
>         at
> org.springframework.transaction.interceptor.TransactionInterceptor.invoke(
> TransactionInterceptor.java:107)
>         at
> org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(
> ReflectiveMethodInvocation.java:161)
>         at
>
> org.springframework.aop.framework.Cglib2AopProxy$DynamicAdvisedInterceptor.intercept
> (Cglib2AopProxy.java:628)
>         at
>
> mcmipih.rules.demo.service.DemoRuleService$$EnhancerByCGLIB$$961244c9.validerRumList
> (<generated>)
>         at
>
> mcmipih.rules.demo.controller.ValidationAppController$ActionValiderSelectionLst.actionPerformed
> (ValidationAppController.java:185)
>         at javax.swing.AbstractButton.fireActionPerformed(Unknown Source)
>         at javax.swing.AbstractButton$Handler.actionPerformed(Unknown
> Source)
>         at javax.swing.DefaultButtonModel.fireActionPerformed(Unknown
> Source)
>         at javax.swing.DefaultButtonModel.setPressed(Unknown Source)
>         at javax.swing.plaf.basic.BasicButtonListener.mouseReleased(Unknown
> Source)
>         at java.awt.Component.processMouseEvent(Unknown Source)
>         at javax.swing.JComponent.processMouseEvent(Unknown Source)
>         at java.awt.Component.processEvent(Unknown Source)
>         at java.awt.Container.processEvent(Unknown Source)
>         at java.awt.Component.dispatchEventImpl(Unknown Source)
>         at java.awt.Container.dispatchEventImpl(Unknown Source)
>         at java.awt.Component.dispatchEvent(Unknown Source)
>         at java.awt.LightweightDispatcher.retargetMouseEvent(Unknown
> Source)
>         at java.awt.LightweightDispatcher.processMouseEvent(Unknown
> Source)
>         at java.awt.LightweightDispatcher.dispatchEvent(Unknown Source)
>         at java.awt.Container.dispatchEventImpl(Unknown Source)
>         at java.awt.Window.dispatchEventImpl(Unknown Source)
>         at java.awt.Component.dispatchEvent(Unknown Source)
>         at java.awt.EventQueue.dispatchEvent(Unknown Source)
>         at java.awt.EventDispatchThread.pumpOneEventForHierarchy(Unknown
> Source)
>         at java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown
> Source)
>         at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
>         at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
>         at java.awt.EventDispatchThread.run(Unknown Source)
> Caused by: java.lang.NullPointerException
>         at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
>         at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
>         at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
>         at java.lang.reflect.Method.invoke(Unknown Source)
>         at
> org.mvel.optimizers.impl.refl.MethodAccessor.getValue(MethodAccessor.java
> :46)
>         ... 54 more
> --
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>
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>



-- 
  Edson Tirelli
  Software Engineer - JBoss Rules Core Developer
  Office: +55 11 3529-6000
  Mobile: +55 11 9287-5646
  JBoss, a division of Red Hat @ www.jboss.com
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