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

Class AbstractMultipleInputTransformation<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.AbstractMultipleInputTransformation<OUT>

Type Parameters:

OUT - The type of the elements that result from this MultipleInputTransformation

Direct Known Subclasses:

KeyedMultipleInputTransformation, MultipleInputTransformation

@Internal
public abstract class AbstractMultipleInputTransformation<OUT>
extends PhysicalTransformation<OUT>

Base class for transformations representing the application of a MultipleInputStreamOperator to input Transformations. The result is again only one stream.

Field Summary

Fields

Modifier and Type	Field	Description
protected List<Transformation<?>>	inputs
protected StreamOperatorFactory<OUT>	operatorFactory

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
AbstractMultipleInputTransformation(String name, StreamOperatorFactory<OUT> operatorFactory, TypeInformation<OUT> outputType, int parallelism)
AbstractMultipleInputTransformation(String name, StreamOperatorFactory<OUT> operatorFactory, TypeInformation<OUT> outputType, int parallelism, boolean parallelismConfigured)

Method Summary

Modifier and Type	Method	Description
List<Transformation<?>>	getInputs()	Returns the transformations that are the immediate predecessors of the current transformation in the transformation graph.
List<TypeInformation<?>>	getInputTypes()	Returns the TypeInformation for the elements from the inputs.
StreamOperatorFactory<OUT>	getOperatorFactory()	Returns the StreamOperatorFactory of this Transformation.
protected List<Transformation<?>>	getTransitivePredecessorsInternal()	Returns all transitive predecessor Transformations of this Transformation.
boolean	isInternalSorterSupported()
boolean	isOutputOnlyAfterEndOfStream()
void	setChainingStrategy(ChainingStrategy strategy)	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, 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

Field Detail

inputs

protected final List<Transformation<?>> inputs

operatorFactory

protected final StreamOperatorFactory<OUT> operatorFactory

Constructor Detail

AbstractMultipleInputTransformation

public AbstractMultipleInputTransformation(String name,
                                           StreamOperatorFactory<OUT> operatorFactory,
                                           TypeInformation<OUT> outputType,
                                           int parallelism)

AbstractMultipleInputTransformation

public AbstractMultipleInputTransformation(String name,
                                           StreamOperatorFactory<OUT> operatorFactory,
                                           TypeInformation<OUT> outputType,
                                           int parallelism,
                                           boolean parallelismConfigured)

Method Detail

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>

getInputTypes

public List<TypeInformation<?>> getInputTypes()

Returns the TypeInformation for the elements from the inputs.

getOperatorFactory

public StreamOperatorFactory<OUT> getOperatorFactory()

Returns the StreamOperatorFactory of this Transformation.

getTransitivePredecessorsInternal

protected List<Transformation<?>> getTransitivePredecessorsInternal()

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:

getTransitivePredecessorsInternal in class Transformation<OUT>

Returns:

The list of transitive predecessors.

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<OUT>

isOutputOnlyAfterEndOfStream

public boolean isOutputOnlyAfterEndOfStream()

isInternalSorterSupported

public boolean isInternalSorterSupported()