Uses of Interface
org.apache.storm.streams.operations.BiFunction

Packages that use BiFunction

Package	Description
org.apache.storm.streams
org.apache.storm.streams.operations

Uses of BiFunction in org.apache.storm.streams

Methods in org.apache.storm.streams with parameters of type BiFunction

Modifier and Type	Method	Description
<R> Stream<R>	Stream.aggregate(R initialValue, BiFunction<? super R,? super T,? extends R> accumulator, BiFunction<? super R,? super R,? extends R> combiner)	Aggregates the values in this stream using the given initial value, accumulator and combiner.
<R> PairStream<K,R>	PairStream.aggregateByKey(R initialValue, BiFunction<? super R,? super V,? extends R> accumulator, BiFunction<? super R,? super R,? extends R> combiner)	Aggregates the values for each key of this stream using the given initial value, accumulator and combiner.
<R> StreamState<K,R>	PairStream.updateStateByKey(R initialValue, BiFunction<? super R,? super V,? extends R> stateUpdateFn)	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 BiFunction in org.apache.storm.streams.operations

Subinterfaces of BiFunction in org.apache.storm.streams.operations

Modifier and Type	Interface	Description
interface	Reducer<T>	The Reducer performs an operation on two values of the same type producing a result of the same type.

Methods in org.apache.storm.streams.operations with parameters of type BiFunction

Modifier and Type	Method	Description
static <T, R> CombinerAggregator<T,R,R>	CombinerAggregator.of(R initialValue, BiFunction<? super R,? super T,? extends R> accumulator, BiFunction<? super R,? super R,? extends R> combiner)	A static factory to create a CombinerAggregator based on initial value, accumulator and combiner.
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.