org.apache.flink.api.java.summarize.aggregation

类 DoubleSummaryAggregator.SumDoubleAggregator

java.lang.Object

org.apache.flink.api.java.summarize.aggregation.DoubleSummaryAggregator.SumDoubleAggregator

所有已实现的接口:

Serializable, Aggregator<Double,Double>

封闭类:

DoubleSummaryAggregator

public static class DoubleSummaryAggregator.SumDoubleAggregator
extends Object
implements Aggregator<Double,Double>

Aggregator for sum operation.

另请参阅:

序列化表格

构造器概要

构造器

构造器和说明
SumDoubleAggregator()

方法概要

限定符和类型	方法和说明
void	aggregate(Double value) Add a value to the current aggregation.
void	combine(Aggregator<Double,Double> other) Combine two aggregations of the same type.
Double	result() Provide the final result of the aggregation.

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

SumDoubleAggregator

public SumDoubleAggregator()

方法详细资料

aggregate

public void aggregate(Double value)

从接口复制的说明: Aggregator

Add a value to the current aggregation.

指定者:

aggregate 在接口中 Aggregator<Double,Double>

combine

public void combine(Aggregator<Double,Double> other)

从接口复制的说明: Aggregator

Combine two aggregations of the same type.

(Implementations will need to do an unchecked cast).

指定者:

combine 在接口中 Aggregator<Double,Double>

result

public Double result()

从接口复制的说明: Aggregator

Provide the final result of the aggregation.

指定者:

result 在接口中 Aggregator<Double,Double>