public class NullUnaryOperator extends Select
tupleCounter
Constructor and Description |
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NullUnaryOperator(Operator operator)
Constructs a new null operator.
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innerProcessTuple, setOutputRelation, toStringSingle
getInputOperator
allDone, cleanup, getInputOperator, getMultiNext, getNext, getNumberOfInputs, getOutputRelation, innerGetNext, prefix, processTuple, setInputs, setup, toString, toString, tuples
public NullUnaryOperator(Operator operator) throws EngineException
operator
- the incoming operator.EngineException
- thrown whenever the operator cannot be
properly initialised.