org.apache.flink.python.api.functions

Class PythonMapPartition<IN,OUT>

java.lang.Object

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

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

org.apache.flink.python.api.functions.PythonMapPartition<IN,OUT>

Type Parameters:

IN -

OUT -

All Implemented Interfaces:

Serializable, Function, MapPartitionFunction<IN,OUT>, RichFunction, ResultTypeQueryable<OUT>

public class PythonMapPartition<IN,OUT>
extends RichMapPartitionFunction<IN,OUT>
implements ResultTypeQueryable<OUT>

Multi-purpose class, usable by all operations using a python script with one input source and possibly differing in-/output types.

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor and Description
PythonMapPartition(Configuration config, int envId, int setId, TypeInformation<OUT> typeInformation)

Method Summary

Methods

Modifier and Type	Method and Description
void	close() Closes this function.
TypeInformation<OUT>	getProducedType()
void	mapPartition(Iterable<IN> values, Collector<OUT> out)
void	open(Configuration config) Opens this function.

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

getIterationRuntimeContext, getRuntimeContext, setRuntimeContext

Methods inherited from class java.lang.Object

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

Constructor Detail

PythonMapPartition

public PythonMapPartition(Configuration config,
                  int envId,
                  int setId,
                  TypeInformation<OUT> typeInformation)

Method Detail

open

public void open(Configuration config)
          throws IOException

Opens this function.

Specified by:

open in interface RichFunction

Overrides:

open in class AbstractRichFunction

Parameters:

config - configuration

Throws:

IOException

mapPartition

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

Specified by:

mapPartition in interface MapPartitionFunction<IN,OUT>

Specified by:

mapPartition in class RichMapPartitionFunction<IN,OUT>

Throws:

Exception

close

public void close()
           throws IOException

Closes this function.

Specified by:

close in interface RichFunction

Overrides:

close in class AbstractRichFunction

Throws:

IOException

getProducedType

public TypeInformation<OUT> getProducedType()

Specified by:

getProducedType in interface ResultTypeQueryable<OUT>