Re: [rules-users] mvel bug ??

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