[jboss-jira] [JBoss JIRA] Created: (JBRULES-1397) org.mvel.CompileException: variable already defined within scope

[Edson Tirelli (JIRA)]

org.mvel.CompileException: variable already defined within scope
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                 Key: JBRULES-1397
                 URL: http://jira.jboss.com/jira/browse/JBRULES-1397
             Project: JBoss Drools
          Issue Type: Bug
      Security Level: Public (Everyone can see)
    Affects Versions: 4.0.3
            Reporter: Edson Tirelli
         Assigned To: Edson Tirelli
             Fix For: 4.0.4, 4.1.0


Reported by Alexander Bagerman.

The following rule and code snippet raises the problem:

rule "rule"
    dialect "mvel"
    when
        $p : Person( $likes : likes )
    then
        Cheese c = new Cheese( $likes );
        System.out.println( $p + " -> " + c );
        insert( c );
end

// snippet
            Person bob = new Person( "Bob", "stilton" );
            Person mark = new Person( "Mark", "brie" );
            workingMemory.insert( bob );
            workingMemory.insert( mark );
            workingMemory.fireAllRules();   

The exception is:

Caused by: org.mvel.CompileException: variable already defined within scope: class com.sample.Cheese c
	at org.drools.base.mvel.DroolsMVELFactory.createVariable(DroolsMVELFactory.java:218)
	at org.mvel.ast.TypedVarNode.getReducedValueAccelerated(TypedVarNode.java:43)
	at org.mvel.MVELRuntime.execute(MVELRuntime.java:88)
	at org.mvel.CompiledExpression.getValue(CompiledExpression.java:108)
	at org.mvel.MVEL.executeExpression(MVEL.java:235)
	at org.drools.base.mvel.MVELConsequence.evaluate(MVELConsequence.java:47)
	at org.drools.common.DefaultAgenda.fireActivation(DefaultAgenda.java:550)

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