As my Evauator LHS is string , so I am setting STRING_TYPE in my Evaluator
definition class.

 CodeEvaluator extends BaseEvaluator {

                        public CodeEvaluator() {
                    super( ValueType.STRING_TYPE,
                           D1Operator.COMPARE_CODE );
                }


But if I use that operator with || then compiler pointed that it should be
OBJECT_TYPE.
And If changed my evaluator definition then its start working ok, but it
pointed error If I use that operator alone or with && hat it should be
STRING_TYPE

*Solution*
I remain it to STRING_TYPE in evaluator class.

But add that operator as both object & string in EvaluatorCache as  follows:


                    addEvaluator( ValueType.STRING_TYPE,        
D1Operator.COMPARE_CODE,            CodeEvaluator.INSTANCE );
                    addEvaluator( ValueType.OBJECT_TYPE,        
D1Operator.COMPARE_CODE,            CodeEvaluator.INSTANCE );


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