SumFunction (Flink : 2.0-SNAPSHOT API)

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

All Methods Static Methods Instance Methods Abstract Methods Concrete Methods
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 Detail
- SumFunction
```
public SumFunction()
```

Method Detail

add

public abstract Object add(Object o1,
                           Object o2)

getForClass

public static SumFunction getForClass(Class<?> clazz)