org.apache.flink.api.java.functions

Class FirstReducer<T>

java.lang.Object

org.apache.flink.api.java.functions.FirstReducer<T>

All Implemented Interfaces:

Serializable, Function, GroupCombineFunction<T,T>, GroupReduceFunction<T,T>

public class FirstReducer<T>
extends Object
implements GroupReduceFunction<T,T>, GroupCombineFunction<T,T>

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor and Description
FirstReducer(int n)

Method Summary

Methods

Modifier and Type	Method and Description
void	combine(Iterable<T> values, Collector<T> out)
void	reduce(Iterable<T> values, Collector<T> out)

Methods inherited from class java.lang.Object

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

Constructor Detail

FirstReducer

public FirstReducer(int n)

Method Detail

reduce

public void reduce(Iterable<T> values,
          Collector<T> out)
            throws Exception

Specified by:

reduce in interface GroupReduceFunction<T,T>

Throws:

Exception

combine

public void combine(Iterable<T> values,
           Collector<T> out)
             throws Exception

Specified by:

combine in interface GroupCombineFunction<T,T>

Throws:

Exception