org.apache.flink.api.java.operators

Class AggregateOperator.AggregatingUdf<T extends Tuple>

java.lang.Object

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

org.apache.flink.api.common.functions.RichGroupReduceFunction<T,T>

org.apache.flink.api.java.operators.AggregateOperator.AggregatingUdf<T>

All Implemented Interfaces:

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

Enclosing class:

AggregateOperator<IN>

@Internal
public static final class AggregateOperator.AggregatingUdf<T extends Tuple>
extends RichGroupReduceFunction<T,T>
implements GroupCombineFunction<T,T>

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor and Description
AggregateOperator.AggregatingUdf(AggregationFunction<Object>[] aggFunctions, int[] fieldPositions)

Method Summary

Methods

Modifier and Type	Method and Description
void	combine(Iterable<T> records, Collector<T> out)
void	open(Configuration parameters)
void	reduce(Iterable<T> records, Collector<T> 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

AggregateOperator.AggregatingUdf

public AggregateOperator.AggregatingUdf(AggregationFunction<Object>[] aggFunctions,
                                int[] fieldPositions)

Method Detail

open

public void open(Configuration parameters)
          throws Exception

Specified by:

open in interface RichFunction

Overrides:

open in class AbstractRichFunction

Throws:

Exception

reduce

public void reduce(Iterable<T> records,
          Collector<T> out)

Specified by:

reduce in interface GroupReduceFunction<T extends Tuple,T extends Tuple>

Specified by:

reduce in class RichGroupReduceFunction<T extends Tuple,T extends Tuple>

combine

public void combine(Iterable<T> records,
           Collector<T> out)

Specified by:

combine in interface GroupCombineFunction<T extends Tuple,T extends Tuple>