[jboss-jira] [JBoss JIRA] (DROOLS-418) MVEL Unable to resolve method exception on fact update

[Nedo Nedic (JIRA)]

Nedo Nedic created DROOLS-418:
---------------------------------

             Summary: MVEL Unable to resolve method exception on fact update
                 Key: DROOLS-418
                 URL: https://issues.jboss.org/browse/DROOLS-418
             Project: Drools
          Issue Type: Bug
      Security Level: Public (Everyone can see)
    Affects Versions: 5.5.0.Final
         Environment: Linux Mint 15
Jboss 5.1
            Reporter: Nedo Nedic
            Assignee: Mark Proctor


The following rule will fail with an exception after update is called on a fact:

	rule "Classifier"
	    no-loop true
	    salience 65430
            when
	          $sn:Snort(sig_priority == "1", type == null)
            then
	          $sn.setType("LOW");
	          update($sn);
            end

[Error: unable to resolve method: java.util.ArrayList.type() [arglength=0]]
[Near : {... type == "LOW" ....}]
             ^
[Line: 1, Column: 1]
        at org.mvel2.optimizers.impl.refl.ReflectiveAccessorOptimizer.getMethod(ReflectiveAccessorOptimizer.java:1071)
        at org.mvel2.optimizers.impl.refl.ReflectiveAccessorOptimizer.getMethod(ReflectiveAccessorOptimizer.java:980)
        at org.mvel2.optimizers.impl.refl.ReflectiveAccessorOptimizer.getBeanProperty(ReflectiveAccessorOptimizer.java:670)
        at org.mvel2.optimizers.impl.refl.ReflectiveAccessorOptimizer.getBeanPropertyAO(ReflectiveAccessorOptimizer.java:465)
        at org.mvel2.optimizers.impl.refl.ReflectiveAccessorOptimizer.compileGetChain(ReflectiveAccessorOptimizer.java:370)
        at org.mvel2.optimizers.impl.refl.ReflectiveAccessorOptimizer.optimizeAccessor(ReflectiveAccessorOptimizer.java:140)
        at org.mvel2.ast.ASTNode.optimize(ASTNode.java:159)
        at org.mvel2.ast.ASTNode.getReducedValueAccelerated(ASTNode.java:115)
        at org.mvel2.ast.BinaryOperation.getReducedValueAccelerated(BinaryOperation.java:114)
        at org.mvel2.MVELRuntime.execute(MVELRuntime.java:86)
        at org.mvel2.compiler.CompiledExpression.getDirectValue(CompiledExpression.java:123)
        at org.mvel2.compiler.CompiledExpression.getValue(CompiledExpression.java:119)
        at org.mvel2.MVEL.executeExpression(MVEL.java:930)
        at org.drools.rule.constraint.MvelConditionEvaluator.evaluate(MvelConditionEvaluator.java:73)
        at org.drools.rule.constraint.MvelConditionEvaluator.evaluate(MvelConditionEvaluator.java:52)
        at org.drools.rule.constraint.MvelConstraint.evaluate(MvelConstraint.java:218)
        at org.drools.rule.constraint.MvelConstraint.isAllowed(MvelConstraint.java:175)
        at org.drools.reteoo.AccumulateNode.evaluateResultConstraints(AccumulateNode.java:655)
        at org.drools.reteoo.ReteooWorkingMemory$EvaluateResultConstraints.execute(ReteooWorkingMemory.java:594)
        at org.drools.common.PropagationContextImpl.evaluateActionQueue(PropagationContextImpl.java:364)
        at org.drools.common.NamedEntryPoint.insert(NamedEntryPoint.java:371)
        at org.drools.common.NamedEntryPoint.insert(NamedEntryPoint.java:327)
        at org.drools.common.AbstractWorkingMemory.insert(AbstractWorkingMemory.java:950)
        at org.drools.common.AbstractWorkingMemory.insert(AbstractWorkingMemory.java:894)
        at org.drools.impl.StatefulKnowledgeSessionImpl.insert(StatefulKnowledgeSessionImpl.java:269)



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