org.apache.kafka.streams.kstream

Interface Reducer<V>

Type Parameters:

V - value type

public interface Reducer<V>

The Reducer interface for combining two values of the same type into a new value.

Method Summary

Methods

Modifier and Type	Method and Description
V	apply(V value1, V value2) Aggregate the two given values into a single one.

Method Detail

apply

V apply(V value1,
      V value2)

Aggregate the two given values into a single one.

Parameters:

value1 - the first value for the aggregation

value2 - the second value for the aggregation

Returns:

the aggregated value