org.apache.flink.api.java.operators

Class AggregateOperator.AggregatingUdf<T extends org.apache.flink.api.java.tuple.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, org.apache.flink.api.common.functions.Function, org.apache.flink.api.common.functions.GroupCombineFunction<T,T>, org.apache.flink.api.common.functions.GroupReduceFunction<T,T>, org.apache.flink.api.common.functions.RichFunction

Enclosing class:

AggregateOperator<IN>

@Internal
public static final class AggregateOperator.AggregatingUdf<T extends org.apache.flink.api.java.tuple.Tuple>
extends org.apache.flink.api.common.functions.RichGroupReduceFunction<T,T>
implements org.apache.flink.api.common.functions.GroupCombineFunction<T,T>

See Also:

Serialized Form

Constructor Summary

Constructors

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

Method Summary

Modifier and Type	Method and Description
void	combine(Iterable<T> records, org.apache.flink.util.Collector<T> out)
void	open(org.apache.flink.configuration.Configuration parameters)
void	reduce(Iterable<T> records, org.apache.flink.util.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

AggregatingUdf

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

Method Detail

open

public void open(org.apache.flink.configuration.Configuration parameters)
          throws Exception

Specified by:

open in interface org.apache.flink.api.common.functions.RichFunction

Overrides:

open in class org.apache.flink.api.common.functions.AbstractRichFunction

Throws:

Exception

reduce

public void reduce(Iterable<T> records,
                   org.apache.flink.util.Collector<T> out)

Specified by:

reduce in interface org.apache.flink.api.common.functions.GroupReduceFunction<T extends org.apache.flink.api.java.tuple.Tuple,T extends org.apache.flink.api.java.tuple.Tuple>

Specified by:

reduce in class org.apache.flink.api.common.functions.RichGroupReduceFunction<T extends org.apache.flink.api.java.tuple.Tuple,T extends org.apache.flink.api.java.tuple.Tuple>

combine

public void combine(Iterable<T> records,
                    org.apache.flink.util.Collector<T> out)

Specified by:

combine in interface org.apache.flink.api.common.functions.GroupCombineFunction<T extends org.apache.flink.api.java.tuple.Tuple,T extends org.apache.flink.api.java.tuple.Tuple>