org.apache.flink.api.java.operators

Class CoGroupOperator<I1,I2,OUT>

java.lang.Object

org.apache.flink.api.java.DataSet<OUT>

org.apache.flink.api.java.operators.Operator<OUT,O>

org.apache.flink.api.java.operators.TwoInputOperator<IN1,IN2,OUT,O>

org.apache.flink.api.java.operators.TwoInputUdfOperator<I1,I2,OUT,CoGroupOperator<I1,I2,OUT>>

org.apache.flink.api.java.operators.CoGroupOperator<I1,I2,OUT>

Type Parameters:

I1 - The type of the first input DataSet of the CoGroup transformation.

I2 - The type of the second input DataSet of the CoGroup transformation.

OUT - The type of the result of the CoGroup transformation.

All Implemented Interfaces:

UdfOperator<CoGroupOperator<I1,I2,OUT>>

public class CoGroupOperator<I1,I2,OUT>
extends TwoInputUdfOperator<I1,I2,OUT,CoGroupOperator<I1,I2,OUT>>

A DataSet that is the result of a CoGroup transformation.

See Also:

DataSet

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	CoGroupOperator.CoGroupOperatorSets<I1,I2> Intermediate step of a CoGroup transformation.

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	CoGroupOperator(DataSet<I1> input1, DataSet<I2> input2, Keys<I1> keys1, Keys<I2> keys2, CoGroupFunction<I1,I2,OUT> function, TypeInformation<OUT> returnType)

Method Summary

Methods

Modifier and Type	Method and Description
protected Keys<I1>	getKeys1()
protected Keys<I2>	getKeys2()
protected CoGroupOperatorBase<?,?,OUT,?>	translateToDataFlow(Operator<I1> input1, Operator<I2> input2) Translates this java API operator into a common API operator with two inputs.

Methods inherited from class org.apache.flink.api.java.operators.TwoInputUdfOperator

extractSemanticAnnotationsFromUdf, getBroadcastSets, getParameters, getSematicProperties, setSemanticProperties, withBroadcastSet, withConstantSetFirst, withConstantSetSecond, withParameters

Methods inherited from class org.apache.flink.api.java.operators.TwoInputOperator

getInput1, getInput1Type, getInput2, getInput2Type

Methods inherited from class org.apache.flink.api.java.operators.Operator

getName, getParallelism, getResultType, name, setParallelism

Methods inherited from class org.apache.flink.api.java.DataSet

aggregate, checkSameExecutionContext, coGroup, cross, crossWithHuge, crossWithTiny, distinct, distinct, distinct, filter, flatMap, getExecutionEnvironment, getType, groupBy, groupBy, iterate, iterateDelta, join, joinWithHuge, joinWithTiny, map, max, min, output, print, printToErr, project, reduce, reduceGroup, runOperation, sum, union, write, write, writeAsCsv, writeAsCsv, writeAsCsv, writeAsText, writeAsText

Methods inherited from class java.lang.Object

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

Constructor Detail

CoGroupOperator

protected CoGroupOperator(DataSet<I1> input1,
               DataSet<I2> input2,
               Keys<I1> keys1,
               Keys<I2> keys2,
               CoGroupFunction<I1,I2,OUT> function,
               TypeInformation<OUT> returnType)

Method Detail

getKeys1

protected Keys<I1> getKeys1()

getKeys2

protected Keys<I2> getKeys2()

translateToDataFlow

protected CoGroupOperatorBase<?,?,OUT,?> translateToDataFlow(Operator<I1> input1,
                                                 Operator<I2> input2)

Description copied from class: TwoInputOperator

Translates this java API operator into a common API operator with two inputs.

Specified by:

translateToDataFlow in class TwoInputOperator<I1,I2,OUT,CoGroupOperator<I1,I2,OUT>>

Parameters:

input1 - The first input of the operation, as a common API operator.

input2 - The second input of the operation, as a common API operator.

Returns:

The created common API operator.