## Uses of Interface
org.apache.storm.streams.operations.StateUpdater

- Packages that use StateUpdater
  Package | Description
  --- | ---
  org.apache.storm.streams |
  org.apache.storm.streams.operations |
  org.apache.storm.streams.processors |

- - ### Uses of StateUpdater in org.apache.storm.streams

    Methods in org.apache.storm.streams with parameters of type StateUpdater
    Modifier and Type | Method and Description
    --- | ---
    `<R> StreamState<K,R>` | PairStream.`updateStateByKey(StateUpdater<? super V,? extends R> stateUpdater)` Update the state by applying the given state update function to the previous state of the key and the new value for the key.

  - ### Uses of StateUpdater in org.apache.storm.streams.operations

    Methods in org.apache.storm.streams.operations that return StateUpdater
    Modifier and Type | Method and Description
    --- | ---
    `static <T,S> StateUpdater<T,S>` | StateUpdater.`of(S initialValue, BiFunction<? super S,? super T,? extends S> stateUpdateFn)` A static factory to create a `StateUpdater` based on an initial value of the state and a state update function.

  - ### Uses of StateUpdater in org.apache.storm.streams.processors

    Constructors in org.apache.storm.streams.processors with parameters of type StateUpdater
    Constructor and Description
    `UpdateStateByKeyProcessor(StateUpdater<V,R> stateUpdater)`

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