org.apache.flink.python.api.functions

Class PythonCoGroup<IN1,IN2,OUT>

java.lang.Object

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

org.apache.flink.api.common.functions.RichCoGroupFunction<IN1,IN2,OUT>

org.apache.flink.python.api.functions.PythonCoGroup<IN1,IN2,OUT>

Type Parameters:

IN1 -

IN2 -

OUT -

All Implemented Interfaces:

Serializable, org.apache.flink.api.common.functions.CoGroupFunction<IN1,IN2,OUT>, org.apache.flink.api.common.functions.Function, org.apache.flink.api.common.functions.RichFunction, org.apache.flink.api.java.typeutils.ResultTypeQueryable<OUT>

public class PythonCoGroup<IN1,IN2,OUT>
extends org.apache.flink.api.common.functions.RichCoGroupFunction<IN1,IN2,OUT>
implements org.apache.flink.api.java.typeutils.ResultTypeQueryable<OUT>

CoGroupFunction that uses a python script.

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor and Description
PythonCoGroup(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.
void	coGroup(Iterable<IN1> first, Iterable<IN2> second, org.apache.flink.util.Collector<OUT> out) Calls the external python function.
org.apache.flink.api.common.typeinfo.TypeInformation<OUT>	getProducedType()
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

PythonCoGroup

public PythonCoGroup(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

coGroup

public final void coGroup(Iterable<IN1> first,
                          Iterable<IN2> second,
                          org.apache.flink.util.Collector<OUT> out)
                   throws Exception

Calls the external python function.

Specified by:

coGroup in interface org.apache.flink.api.common.functions.CoGroupFunction<IN1,IN2,OUT>

Specified by:

coGroup in class org.apache.flink.api.common.functions.RichCoGroupFunction<IN1,IN2,OUT>

Parameters:

first -

second -

out - collector

Throws:

IOException

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>