Package org.apache.flink.streaming.api.functions.aggregation

Class SumFunction

java.lang.Object

org.apache.flink.streaming.api.functions.aggregation.SumFunction

All Implemented Interfaces:

Serializable

@Internal
public abstract class SumFunction
extends Object
implements Serializable

Internal function for summing up contents of fields. This is used with SumAggregator.

See Also:

• Serialized Form

Constructor Summary

Constructors

Constructor	Description
SumFunction()

Method Summary

Modifier and Type	Method	Description
abstract Object	add(Object o1, Object o2)
static SumFunction	getForClass(Class<?> clazz)

Methods inherited from class java.lang.Object

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

Constructor Details

SumFunction

public SumFunction()

Method Details

add

public abstract Object add(Object o1,
 Object o2)

getForClass

public static SumFunction getForClass(Class<?> clazz)