org.apache.storm.streams.operations

Interface Function<T,R>

Type Parameters:

T - the type of the input to the function

R - the type of the result of the function

All Superinterfaces:

Operation, Serializable

All Known Subinterfaces:

FlatMapFunction<T,R>, PairFlatMapFunction<T,K,V>, PairFunction<T,K,V>, TupleValueMapper<T>

All Known Implementing Classes:

EvaluationCalc, EvaluationFunction, IdentityFunction, PairValueMapper, StreamInsertMapToPairFunction, StreamsScanTupleValueMapper, ValueMapper, ValuesMapper

public interface Function<T,R>
extends Operation

Represents a function that accepts one argument and produces a result.

Method Summary

Modifier and Type	Method and Description
R	apply(T input) Applies this function to the given argument.

Method Detail

apply

R apply(T input)

Applies this function to the given argument.

Parameters:

input - the input to the function

Returns:

the function result