org.apache.flink.streaming.api.transformations

Class SourceTransformation<OUT,SplitT extends SourceSplit,EnumChkT>

java.lang.Object

org.apache.flink.api.dag.Transformation<T>

org.apache.flink.streaming.api.transformations.PhysicalTransformation<OUT>

org.apache.flink.streaming.api.transformations.SourceTransformation<OUT,SplitT,EnumChkT>

All Implemented Interfaces:

WithBoundedness

@Internal
public class SourceTransformation<OUT,SplitT extends SourceSplit,EnumChkT>
extends PhysicalTransformation<OUT>
implements WithBoundedness

A PhysicalTransformation for Source.

Field Summary

Fields inherited from class org.apache.flink.api.dag.Transformation

bufferTimeout, id, idCounter, name, outputType, typeUsed, UPPER_BOUND_MAX_PARALLELISM

Constructor Summary

Constructors

Constructor and Description
SourceTransformation(String name, Source<OUT,SplitT,EnumChkT> source, WatermarkStrategy<OUT> watermarkStrategy, TypeInformation<OUT> outputType, int parallelism) Creates a new Transformation with the given name, output type and parallelism.

Method Summary

Modifier and Type	Method and Description
Boundedness	getBoundedness() Returns the Boundedness of this Transformation.
ChainingStrategy	getChainingStrategy()
List<Transformation<?>>	getInputs() Returns the transformations that are the immediate predecessors of the current transformation in the transformation graph.
Source<OUT,SplitT,EnumChkT>	getSource()
List<Transformation<?>>	getTransitivePredecessors() Returns all transitive predecessor Transformations of this Transformation.
WatermarkStrategy<OUT>	getWatermarkStrategy()
void	setChainingStrategy(ChainingStrategy chainingStrategy) Sets the chaining strategy of this Transformation.

Methods inherited from class org.apache.flink.api.dag.Transformation

declareManagedMemoryUseCaseAtOperatorScope, declareManagedMemoryUseCaseAtSlotScope, equals, getBufferTimeout, getCoLocationGroupKey, getId, getManagedMemoryOperatorScopeUseCaseWeights, getManagedMemorySlotScopeUseCases, getMaxParallelism, getMinResources, getName, getNewNodeId, getOutputType, getParallelism, getPreferredResources, getSlotSharingGroup, getUid, getUserProvidedNodeHash, hashCode, setBufferTimeout, setCoLocationGroupKey, setMaxParallelism, setName, setOutputType, setParallelism, setResources, setSlotSharingGroup, setUid, setUidHash, toString, updateManagedMemoryStateBackendUseCase

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Constructor Detail

SourceTransformation

public SourceTransformation(String name,
                            Source<OUT,SplitT,EnumChkT> source,
                            WatermarkStrategy<OUT> watermarkStrategy,
                            TypeInformation<OUT> outputType,
                            int parallelism)

Creates a new Transformation with the given name, output type and parallelism.

Parameters:

name - The name of the Transformation, this will be shown in Visualizations and the Log

source - The Source itself

watermarkStrategy - The WatermarkStrategy to use

outputType - The output type of this Transformation

parallelism - The parallelism of this Transformation

Method Detail

getSource

public Source<OUT,SplitT,EnumChkT> getSource()

getWatermarkStrategy

public WatermarkStrategy<OUT> getWatermarkStrategy()

getBoundedness

public Boundedness getBoundedness()

Description copied from interface: WithBoundedness

Returns the Boundedness of this Transformation.

Specified by:

getBoundedness in interface WithBoundedness

getTransitivePredecessors

public List<Transformation<?>> getTransitivePredecessors()

Description copied from class: Transformation

Returns all transitive predecessor Transformations of this Transformation. This is, for example, used when determining whether a feedback edge of an iteration actually has the iteration head as a predecessor.

Specified by:

getTransitivePredecessors in class Transformation<OUT>

Returns:

The list of transitive predecessors.

getInputs

public List<Transformation<?>> getInputs()

Description copied from class: Transformation

Returns the transformations that are the immediate predecessors of the current transformation in the transformation graph.

Specified by:

getInputs in class Transformation<OUT>

setChainingStrategy

public void setChainingStrategy(ChainingStrategy chainingStrategy)

Description copied from class: PhysicalTransformation

Sets the chaining strategy of this Transformation.

Specified by:

setChainingStrategy in class PhysicalTransformation<OUT>

getChainingStrategy

public ChainingStrategy getChainingStrategy()