public interface TupleCalc
The tuple is represented as an array of Member objects,
null to represent the null tuple.
When implementing this interface, it is convenient to extend
AbstractTupleCalc, but it is not required.
accept, dependsOn, evaluate, getResultStyle, getType, isWrapperFor, unwrap
Member evaluateTuple(Evaluator evaluator)
A tuple cannot contain any null members. If any of the members is
null, this method must return a null.