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

Class TupleKeyExtractingMapper<T,K>

java.lang.Object

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

org.apache.flink.api.java.functions.RichMapFunction<T,Tuple2<K,T>>

org.apache.flink.api.java.operators.translation.TupleKeyExtractingMapper<T,K>

All Implemented Interfaces:

Serializable, Function, MapFunction<T,Tuple2<K,T>>, RichFunction

public final class TupleKeyExtractingMapper<T,K>
extends RichMapFunction<T,Tuple2<K,T>>

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor and Description
TupleKeyExtractingMapper(int pos)

Method Summary

Methods

Modifier and Type	Method and Description
Tuple2<K,T>	map(T value)

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

close, getIterationRuntimeContext, getRuntimeContext, open, setRuntimeContext

Methods inherited from class java.lang.Object

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

Constructor Detail

TupleKeyExtractingMapper

public TupleKeyExtractingMapper(int pos)

Method Detail

map

public Tuple2<K,T> map(T value)
                throws Exception

Specified by:

map in interface MapFunction<T,Tuple2<K,T>>

Specified by:

map in class RichMapFunction<T,Tuple2<K,T>>

Throws:

Exception