org.apache.flink.api.java.operators.translation

Class CombineToGroupCombineWrapper<IN,OUT,F extends CombineFunction<IN,IN> & GroupReduceFunction<IN,OUT>>

java.lang.Object

org.apache.flink.api.java.operators.translation.CombineToGroupCombineWrapper<IN,OUT,F>

All Implemented Interfaces:

Serializable, Function, GroupCombineFunction<IN,IN>, GroupReduceFunction<IN,OUT>

@Internal
public class CombineToGroupCombineWrapper<IN,OUT,F extends CombineFunction<IN,IN> & GroupReduceFunction<IN,OUT>>
extends Object
implements GroupCombineFunction<IN,IN>, GroupReduceFunction<IN,OUT>

A wrapper the wraps a function that implements both CombineFunction and GroupReduceFunction interfaces and makes it look like a function that implements GroupCombineFunction and GroupReduceFunction to the runtime.

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor and Description
CombineToGroupCombineWrapper(F wrappedFunction)

Method Summary

Methods

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

Methods inherited from class java.lang.Object

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

Constructor Detail

CombineToGroupCombineWrapper

public CombineToGroupCombineWrapper(F wrappedFunction)

Method Detail

combine

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

Specified by:

combine in interface GroupCombineFunction<IN,IN>

Throws:

Exception

reduce

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

Specified by:

reduce in interface GroupReduceFunction<IN,OUT>

Throws:

Exception