org.apache.flink.api.java.aggregation

Class SumAggregationFunction<T>

java.lang.Object

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

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

Type Parameters:

T - type of elements being summed

All Implemented Interfaces:

Serializable

@Internal
public abstract class SumAggregationFunction<T>
extends AggregationFunction<T>

Definitions of sum functions for different numerical types.

See Also:

Serialized Form

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	SumAggregationFunction.SumAggregationFunctionFactory Factory for SumAggregationFunction.

Constructor Summary

Constructors

Constructor and Description
SumAggregationFunction()

Method Summary

Modifier and Type	Method and Description
String	toString()

Methods inherited from class org.apache.flink.api.java.aggregation.AggregationFunction

aggregate, getAggregate, initializeAggregate

Methods inherited from class java.lang.Object

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

Constructor Detail

SumAggregationFunction

public SumAggregationFunction()

Method Detail

toString

public String toString()

Overrides:

toString in class Object