Package org.apache.storm.trident.operation

# Interface CombinerAggregator<T>

All Superinterfaces:
  `Serializable`

All Known Implementing Classes:
  `Count`, `Sum`, `TridentReach.One`

public interface CombinerAggregator<T> extends Serializable

- ## Method Summary

  Modifier and Type
  Method
  Description
  `T`
  `combine(T val1, T val2)`
  `T`
  `init(TridentTuple tuple)`
  `T`
  `zero()`

- ## Method Details

  - ### init

    T init(TridentTuple tuple)

  - ### combine

    T combine(T val1, T val2)

  - ### zero

    T zero()