Package org.apache.flink.streaming.api.transformations

Class LegacySourceTransformation<T>

java.lang.Object

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

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

org.apache.flink.streaming.api.transformations.TransformationWithLineage<T>

org.apache.flink.streaming.api.transformations.LegacySourceTransformation<T>

Type Parameters:

T - The type of the elements that this source produces

All Implemented Interfaces:

WithBoundedness

@Internal
public class LegacySourceTransformation<T>
extends TransformationWithLineage<T>
implements WithBoundedness

This represents a Source. This does not actually transform anything since it has no inputs but it is the root Transformation of any topology.

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

Constructor	Description
LegacySourceTransformation(String name, StreamSource<T,?> operator, org.apache.flink.api.common.typeinfo.TypeInformation<T> outputType, int parallelism, org.apache.flink.api.connector.source.Boundedness boundedness, boolean parallelismConfigured)	Creates a new LegacySourceTransformation from the given operator.

Method Summary

Modifier and Type	Method	Description
org.apache.flink.api.connector.source.Boundedness	getBoundedness()	Returns the Boundedness of this Transformation.
List<org.apache.flink.api.dag.Transformation<?>>	getInputs()
StreamSource<T,?>	getOperator()
StreamOperatorFactory<T>	getOperatorFactory()	Returns the StreamOperatorFactory of this LegacySourceTransformation.
protected List<org.apache.flink.api.dag.Transformation<?>>	getTransitivePredecessorsInternal()
void	setBoundedness(org.apache.flink.api.connector.source.Boundedness boundedness)	Mutable for legacy sources in the Table API.
void	setChainingStrategy(ChainingStrategy strategy)	Sets the chaining strategy of this Transformation.

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

getLineageVertex, setLineageVertex

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, getAttribute, getBufferTimeout, getCoLocationGroupKey, getDescription, getId, getManagedMemoryOperatorScopeUseCaseWeights, getManagedMemorySlotScopeUseCases, getMaxParallelism, getMinResources, getName, getNewNodeId, getOutputType, getParallelism, getPreferredResources, getSlotSharingGroup, getTransitivePredecessors, getUid, getUserProvidedNodeHash, hashCode, isParallelismConfigured, setAttribute, 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

LegacySourceTransformation

public LegacySourceTransformation(String name,
                                  StreamSource<T,?> operator,
                                  org.apache.flink.api.common.typeinfo.TypeInformation<T> outputType,
                                  int parallelism,
                                  org.apache.flink.api.connector.source.Boundedness boundedness,
                                  boolean parallelismConfigured)

Creates a new LegacySourceTransformation from the given operator.

Parameters:

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

operator - The StreamSource that is the operator of this Transformation

outputType - The type of the elements produced by this LegacySourceTransformation

parallelism - The parallelism of this LegacySourceTransformation

parallelismConfigured - If true, the parallelism of the transformation is explicitly set and should be respected. Otherwise the parallelism can be changed at runtime.

Method Detail

setBoundedness

public void setBoundedness(org.apache.flink.api.connector.source.Boundedness boundedness)

Mutable for legacy sources in the Table API.

getBoundedness

public org.apache.flink.api.connector.source.Boundedness getBoundedness()

Description copied from interface: WithBoundedness

Returns the Boundedness of this Transformation.

Specified by:

getBoundedness in interface WithBoundedness

getOperator

@VisibleForTesting
public StreamSource<T,?> getOperator()

getOperatorFactory

public StreamOperatorFactory<T> getOperatorFactory()

Returns the StreamOperatorFactory of this LegacySourceTransformation.

getTransitivePredecessorsInternal

protected List<org.apache.flink.api.dag.Transformation<?>> getTransitivePredecessorsInternal()

Specified by:

getTransitivePredecessorsInternal in class org.apache.flink.api.dag.Transformation<T>

getInputs

public List<org.apache.flink.api.dag.Transformation<?>> getInputs()

Specified by:

getInputs in class org.apache.flink.api.dag.Transformation<T>

setChainingStrategy

public final void setChainingStrategy(ChainingStrategy strategy)

Description copied from class: PhysicalTransformation

Sets the chaining strategy of this Transformation.

Specified by:

setChainingStrategy in class PhysicalTransformation<T>