org.apache.flink.runtime.operators.udf

Class AssignRangeIndex<IN>

java.lang.Object

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

org.apache.flink.api.common.functions.RichMapPartitionFunction<IN,Tuple2<Integer,IN>>

org.apache.flink.runtime.operators.udf.AssignRangeIndex<IN>

Type Parameters:

IN - The original data type.

All Implemented Interfaces:

Serializable, Function, MapPartitionFunction<IN,Tuple2<Integer,IN>>, RichFunction

public class AssignRangeIndex<IN>
extends RichMapPartitionFunction<IN,Tuple2<Integer,IN>>

This mapPartition function require a DataSet with RangeBoundaries as broadcast input, it generate Tuple2 which includes range index and record itself as output.

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor and Description
AssignRangeIndex(TypeComparatorFactory<IN> typeComparator)

Method Summary

Modifier and Type	Method and Description
void	mapPartition(Iterable<IN> values, Collector<Tuple2<Integer,IN>> out) A user-implemented function that modifies or transforms an incoming object.

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

AssignRangeIndex

public AssignRangeIndex(TypeComparatorFactory<IN> typeComparator)

Method Detail

mapPartition

public void mapPartition(Iterable<IN> values,
                         Collector<Tuple2<Integer,IN>> out)
                  throws Exception

Description copied from interface: MapPartitionFunction

A user-implemented function that modifies or transforms an incoming object.

Specified by:

mapPartition in interface MapPartitionFunction<IN,Tuple2<Integer,IN>>

Specified by:

mapPartition in class RichMapPartitionFunction<IN,Tuple2<Integer,IN>>

Parameters:

values - All records for the mapper

out - The collector to hand results to.

Throws:

Exception - This method may throw exceptions. Throwing an exception will cause the operation to fail and may trigger recovery.