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, org.apache.flink.api.common.functions.Function, org.apache.flink.api.common.functions.MapPartitionFunction<IN,OUT>, org.apache.flink.api.common.functions.RichFunction, org.apache.flink.api.java.typeutils.ResultTypeQueryable<OUT>

public class PythonMapPartition<IN,OUT>
extends org.apache.flink.api.common.functions.RichMapPartitionFunction<IN,OUT>
implements org.apache.flink.api.java.typeutils.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(org.apache.flink.configuration.Configuration config, int envId, int setId, org.apache.flink.api.common.typeinfo.TypeInformation<OUT> typeInformation)

Method Summary

Modifier and Type	Method and Description
void	close() Closes this function.
org.apache.flink.api.common.typeinfo.TypeInformation<OUT>	getProducedType()
void	mapPartition(Iterable<IN> values, org.apache.flink.util.Collector<OUT> out)
void	open(org.apache.flink.configuration.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(org.apache.flink.configuration.Configuration config,
                          int envId,
                          int setId,
                          org.apache.flink.api.common.typeinfo.TypeInformation<OUT> typeInformation)

Method Detail

open

public void open(org.apache.flink.configuration.Configuration config)
          throws IOException

Opens this function.

Specified by:

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

Overrides:

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

Parameters:

config - configuration

Throws:

IOException

mapPartition

public void mapPartition(Iterable<IN> values,
                         org.apache.flink.util.Collector<OUT> out)
                  throws Exception

Specified by:

mapPartition in interface org.apache.flink.api.common.functions.MapPartitionFunction<IN,OUT>

Specified by:

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

Throws:

Exception

close

public void close()
           throws IOException

Closes this function.

Specified by:

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

Overrides:

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

Throws:

IOException

getProducedType

public org.apache.flink.api.common.typeinfo.TypeInformation<OUT> getProducedType()

Specified by:

getProducedType in interface org.apache.flink.api.java.typeutils.ResultTypeQueryable<OUT>