org.apache.flink.streaming.api.transformations

Class AbstractBroadcastStateTransformation<IN1,IN2,OUT>

java.lang.Object

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

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

org.apache.flink.streaming.api.transformations.AbstractBroadcastStateTransformation<IN1,IN2,OUT>

Type Parameters:

IN1 - The type of the elements in the non-broadcasted input.

IN2 - The type of the elements in the broadcasted input.

OUT - The type of the elements that result from this transformation.

Direct Known Subclasses:

BroadcastStateTransformation, KeyedBroadcastStateTransformation, PythonBroadcastStateTransformation, PythonKeyedBroadcastStateTransformation

@Internal
public class AbstractBroadcastStateTransformation<IN1,IN2,OUT>
extends PhysicalTransformation<OUT>

Base class for Broadcast State transformations. In a nutshell, this transformation allows to take a broadcast (non-keyed) stream, connect it with another keyed or non-keyed stream, and apply a function on the resulting connected stream.

For more information see the Broadcast State Pattern documentation page.

Field Summary

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

bufferTimeout, description, id, name, outputType, typeUsed, UPPER_BOUND_MAX_PARALLELISM

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	AbstractBroadcastStateTransformation(String name, Transformation<IN1> regularInput, Transformation<IN2> broadcastInput, List<MapStateDescriptor<?,?>> broadcastStateDescriptors, TypeInformation<OUT> outTypeInfo, int parallelism)
protected	AbstractBroadcastStateTransformation(String name, Transformation<IN1> regularInput, Transformation<IN2> broadcastInput, List<MapStateDescriptor<?,?>> broadcastStateDescriptors, TypeInformation<OUT> outTypeInfo, int parallelism, boolean parallelismConfigured)

Method Summary

Modifier and Type	Method and Description
Transformation<IN2>	getBroadcastInput()
List<MapStateDescriptor<?,?>>	getBroadcastStateDescriptors()
ChainingStrategy	getChainingStrategy()
List<Transformation<?>>	getInputs() Returns the transformations that are the immediate predecessors of the current transformation in the transformation graph.
Transformation<IN1>	getRegularInput()
List<Transformation<?>>	getTransitivePredecessors() Returns all transitive predecessor Transformations of this Transformation.
void	setChainingStrategy(ChainingStrategy chainingStrategy) Sets the chaining strategy of this Transformation.

Methods inherited from class org.apache.flink.streaming.api.transformations.PhysicalTransformation

isSupportsConcurrentExecutionAttempts, setSupportsConcurrentExecutionAttempts

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

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

Methods inherited from class java.lang.Object

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

Constructor Detail

AbstractBroadcastStateTransformation

protected AbstractBroadcastStateTransformation(String name,
                                               Transformation<IN1> regularInput,
                                               Transformation<IN2> broadcastInput,
                                               List<MapStateDescriptor<?,?>> broadcastStateDescriptors,
                                               TypeInformation<OUT> outTypeInfo,
                                               int parallelism)

AbstractBroadcastStateTransformation

protected AbstractBroadcastStateTransformation(String name,
                                               Transformation<IN1> regularInput,
                                               Transformation<IN2> broadcastInput,
                                               List<MapStateDescriptor<?,?>> broadcastStateDescriptors,
                                               TypeInformation<OUT> outTypeInfo,
                                               int parallelism,
                                               boolean parallelismConfigured)

Method Detail

getBroadcastInput

public Transformation<IN2> getBroadcastInput()

getRegularInput

public Transformation<IN1> getRegularInput()

getBroadcastStateDescriptors

public List<MapStateDescriptor<?,?>> getBroadcastStateDescriptors()

getChainingStrategy

public ChainingStrategy getChainingStrategy()

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>

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>