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

    All Methods Instance Methods Abstract Methods
    Modifier and Type | Method | Description
    --- | --- | ---
    `T` | `combine​(T val1, T val2)` |
    `T` | `init​(TridentTuple tuple)` |
    `T` | `zero()` |

- - ### Method Detail

    - #### init

          T init​(TridentTuple tuple)

    - #### combine

          T combine​(T val1,
                    T val2)

    - #### zero

          T zero()