org.apache.flink.streaming.api.graph

Interface TransformationTranslator<OUT,T extends org.apache.flink.api.dag.Transformation<OUT>>

Type Parameters:

OUT - The type of the output elements of the transformation being translated.

T - The type of transformation being translated.

All Known Implementing Classes:

AbstractTwoInputTransformationTranslator, BroadcastStateTransformationTranslator, CacheTransformationTranslator, GlobalCommitterTransformationTranslator, KeyedBroadcastStateTransformationTranslator, LegacySinkTransformationTranslator, LegacySourceTransformationTranslator, MultiInputTransformationTranslator, OneInputTransformationTranslator, PartitionTransformationTranslator, ReduceTransformationTranslator, SideOutputTransformationTranslator, SimpleTransformationTranslator, SinkTransformationTranslator, SourceTransformationTranslator, TimestampsAndWatermarksTransformationTranslator, TwoInputTransformationTranslator, UnionTransformationTranslator

@Internal
public interface TransformationTranslator<OUT,T extends org.apache.flink.api.dag.Transformation<OUT>>

A TransformationTranslator is responsible for translating a given Transformation to its runtime implementation depending on the execution mode.

Nested Class Summary

Nested Classes

Modifier and Type	Interface and Description
static interface	TransformationTranslator.Context A context giving the necessary information for the translation of a given transformation.

Method Summary

Modifier and Type	Method and Description
Collection<Integer>	translateForBatch(T transformation, TransformationTranslator.Context context) Translates a given Transformation to its runtime implementation for BATCH-style execution.
Collection<Integer>	translateForStreaming(T transformation, TransformationTranslator.Context context) Translates a given Transformation to its runtime implementation for STREAMING-style execution.

Method Detail

translateForBatch

Collection<Integer> translateForBatch(T transformation,
                                      TransformationTranslator.Context context)

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

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.

translateForStreaming

Collection<Integer> translateForStreaming(T transformation,
                                          TransformationTranslator.Context context)

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

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.