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

Class DoubleSummaryAggregator.SumDoubleAggregator

java.lang.Object

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

All Implemented Interfaces:

Serializable, Aggregator<Double,Double>

Enclosing class:

DoubleSummaryAggregator

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

Aggregator for sum operation.

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor and Description
SumDoubleAggregator()

Method Summary

Modifier and Type	Method and Description
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.

Methods inherited from class java.lang.Object

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

Constructor Detail

SumDoubleAggregator

public SumDoubleAggregator()

Method Detail

aggregate

public void aggregate(Double value)

Description copied from interface: Aggregator

Add a value to the current aggregation.

Specified by:

aggregate in interface Aggregator<Double,Double>

combine

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

Description copied from interface: Aggregator

Combine two aggregations of the same type.

(Implementations will need to do an unchecked cast).

Specified by:

combine in interface Aggregator<Double,Double>

result

public Double result()

Description copied from interface: Aggregator

Provide the final result of the aggregation.

Specified by:

result in interface Aggregator<Double,Double>