[jboss-jira] [JBoss JIRA] Created: (JBRULES-2482) Binding seems to be unreliable with MVEL dialect and mulitple evals

[Chris DeLashmutt (JIRA)]

Binding seems to be unreliable with MVEL dialect and mulitple evals
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                 Key: JBRULES-2482
                 URL: https://jira.jboss.org/jira/browse/JBRULES-2482
             Project: Drools
          Issue Type: Bug
      Security Level: Public (Everyone can see)
          Components: drools-core  (expert)
    Affects Versions: 5.1.0.M1
         Environment: Windows 7, Sun JDK 1.6.0_17
            Reporter: Chris DeLashmutt
            Assignee: Mark Proctor


When using the MVEL dialect, a rule with multiple binds, and a chain of evals, the bindings seem to be incorrect.

For example here is some DRL:

rule "Modify Field Rule for Form: InterrelatedFieldsTestForm.fieldA (Set fieldA optional if values are in other fields)"
    when
        $fieldA: Field(id == "fieldA")
        $fieldB: Field(id == "fieldB")
        $fieldC: Field(id == "fieldC")
        (eval(ValidationFunctions.isChecked($fieldA)) or eval(ValidationFunctions.isChecked($fieldB)) or eval(!ValidationFunctions.isBlank($fieldC))) 
    then
        ValidationFunctions.insertOperation(fieldOperations, new FieldOperation("fieldA",FieldOperation.OPTIONAL));
end

If I put debugging statements in to the static ValidationFunctions methods, or if I put breakpoints in those same static methods, I see invocations using bound variables that don't match what I declared.

For instance, I'll see isBlank called with what appears to be the contents of $fieldA.

If I combine the evals into a single eval with each condition separated by ||. everything seems to function properly.  I can't easily go back and change the syntax in my exisiting rules however, and the syntax I'm using seems to be valid based on my interpretation of the documentation.

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