org.apache.flink.api.java.aggregation

类 AggregationFunction<T>

java.lang.Object

org.apache.flink.api.java.aggregation.AggregationFunction<T>

类型参数:

T - The type to be aggregated.

所有已实现的接口:

Serializable

直接已知子类:

MaxAggregationFunction, MinAggregationFunction, SumAggregationFunction

@Internal
public abstract class AggregationFunction<T>
extends Object
implements Serializable

另请参阅:

序列化表格

构造器概要

构造器

构造器和说明
AggregationFunction()

方法概要

限定符和类型	方法和说明
abstract void	aggregate(T value)
abstract T	getAggregate()
abstract void	initializeAggregate()

从类继承的方法 java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

构造器详细资料

AggregationFunction

public AggregationFunction()

方法详细资料

initializeAggregate

public abstract void initializeAggregate()

aggregate

public abstract void aggregate(T value)

getAggregate

public abstract T getAggregate()