Package org.apache.flink.streaming.runtime.translators

Class ReduceTransformationTranslator<IN,KEY>

java.lang.Object

org.apache.flink.streaming.api.graph.SimpleTransformationTranslator<OUT,OP>

org.apache.flink.streaming.runtime.translators.ReduceTransformationTranslator<IN,KEY>

Type Parameters:

IN - The type of the elements in the input Transformation of the transformation to translate.

All Implemented Interfaces:

TransformationTranslator<IN,ReduceTransformation<IN,KEY>>

public class ReduceTransformationTranslator<IN,KEY>
extends SimpleTransformationTranslator<OUT,OP>

A TransformationTranslator for the ReduceTransformation.

Nested Class Summary

Nested classes/interfaces inherited from interface org.apache.flink.streaming.api.graph.TransformationTranslator

TransformationTranslator.Context

Constructor Summary

Constructors

Constructor	Description
ReduceTransformationTranslator()

Method Summary

Modifier and Type	Method	Description
Collection<Integer>	translateForBatchInternal(ReduceTransformation<IN,KEY> transformation, TransformationTranslator.Context context)	Translates a given Transformation to its runtime implementation for BATCH-style execution.
Collection<Integer>	translateForStreamingInternal(ReduceTransformation<IN,KEY> transformation, TransformationTranslator.Context context)	Translates a given Transformation to its runtime implementation for STREAMING-style execution.
protected Collection<Integer>	translateInternal(org.apache.flink.api.dag.Transformation<OUT> transformation, StreamOperatorFactory<OUT> operatorFactory, org.apache.flink.api.common.typeinfo.TypeInformation<IN> inputType, org.apache.flink.api.java.functions.KeySelector<IN,?> stateKeySelector, org.apache.flink.api.common.typeinfo.TypeInformation<?> stateKeyType, TransformationTranslator.Context context)

Methods inherited from class org.apache.flink.streaming.api.graph.SimpleTransformationTranslator

translateForBatch, translateForStreaming

Methods inherited from class java.lang.Object

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

Constructor Detail

ReduceTransformationTranslator

public ReduceTransformationTranslator()

Method Detail

translateForBatchInternal

public Collection<Integer> translateForBatchInternal(ReduceTransformation<IN,KEY> transformation,
                                                     TransformationTranslator.Context context)

Description copied from class: SimpleTransformationTranslator

Translates a given Transformation to its runtime implementation for BATCH-style execution.

Specified by:

translateForBatchInternal in class SimpleTransformationTranslator<IN,ReduceTransformation<IN,KEY>>

Parameters:

transformation - The transformation to be translated.

context - The translation context.

Returns:

The ids of the "last" StreamNodes in the transformation graph corresponding to this transformation. These will be the nodes that a potential following transformation will need to connect to.

translateForStreamingInternal

public Collection<Integer> translateForStreamingInternal(ReduceTransformation<IN,KEY> transformation,
                                                         TransformationTranslator.Context context)

Description copied from class: SimpleTransformationTranslator

Translates a given Transformation to its runtime implementation for STREAMING-style execution.

Specified by:

translateForStreamingInternal in class SimpleTransformationTranslator<IN,ReduceTransformation<IN,KEY>>

Parameters:

transformation - The transformation to be translated.

context - The translation context.

Returns:

The ids of the "last" StreamNodes in the transformation graph corresponding to this transformation. These will be the nodes that a potential following transformation will need to connect to.

translateInternal

protected Collection<Integer> translateInternal(org.apache.flink.api.dag.Transformation<OUT> transformation,
                                                StreamOperatorFactory<OUT> operatorFactory,
                                                org.apache.flink.api.common.typeinfo.TypeInformation<IN> inputType,
                                                @Nullable
                                                org.apache.flink.api.java.functions.KeySelector<IN,?> stateKeySelector,
                                                @Nullable
                                                org.apache.flink.api.common.typeinfo.TypeInformation<?> stateKeyType,
                                                TransformationTranslator.Context context)