io.ray.streaming.api.function.impl

接口 AggregateFunction<I,A,O>

类型参数:

I - Type of the input data.

A - Type of the intermediate data.

O - Type of the output data.

所有超级接口:

Function, Serializable

public interface AggregateFunction<I,A,O>
extends Function

Interface of aggregate functions.

方法概要

限定符和类型	方法和说明
void	add(I value, A accumulator)
A	createAccumulator()
O	getResult(A accumulator)
A	merge(A a, A b)
void	retract(A acc, I value)

从接口继承的方法 io.ray.streaming.api.function.Function

loadCheckpoint, saveCheckpoint

方法详细资料

createAccumulator

A createAccumulator()

add

void add(I value,
         A accumulator)

getResult

O getResult(A accumulator)

merge

A merge(A a,
        A b)

retract

void retract(A acc,
             I value)