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

Class RichCombineToGroupCombineWrapper<IN,OUT,F extends RichGroupReduceFunction<IN,OUT> & CombineFunction<IN,IN>>

java.lang.Object

org.apache.flink.api.common.functions.AbstractRichFunction

org.apache.flink.api.common.functions.RichGroupCombineFunction<IN,IN>

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

All Implemented Interfaces:

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

public class RichCombineToGroupCombineWrapper<IN,OUT,F extends RichGroupReduceFunction<IN,OUT> & CombineFunction<IN,IN>>
extends RichGroupCombineFunction<IN,IN>
implements 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
RichCombineToGroupCombineWrapper(F wrappedFunction)

Method Summary

Methods

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

Methods inherited from class org.apache.flink.api.common.functions.AbstractRichFunction

close, getIterationRuntimeContext, getRuntimeContext, setRuntimeContext

Methods inherited from class java.lang.Object

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

Constructor Detail

RichCombineToGroupCombineWrapper

public RichCombineToGroupCombineWrapper(F wrappedFunction)

Method Detail

open

public void open(Configuration config)
          throws Exception

Specified by:

open in interface RichFunction

Overrides:

open in class AbstractRichFunction

Throws:

Exception

combine

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

Specified by:

combine in interface GroupCombineFunction<IN,IN>

Specified by:

combine in class RichGroupCombineFunction<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