org.apache.flink.streaming.api.transformations

类 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.LegacySourceTransformation<T>

类型参数:

T - The type of the elements that this source produces

所有已实现的接口:

WithBoundedness

@Internal
public class LegacySourceTransformation<T>
extends PhysicalTransformation<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.

字段概要

从类继承的字段 org.apache.flink.api.dag.Transformation

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

构造器概要

构造器

构造器和说明
LegacySourceTransformation(String name, StreamOperatorFactory<T> operatorFactory, org.apache.flink.api.common.typeinfo.TypeInformation<T> outputType, int parallelism, org.apache.flink.api.connector.source.Boundedness boundedness)
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) Creates a new LegacySourceTransformation from the given operator.

方法概要

限定符和类型	方法和说明
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.
List<org.apache.flink.api.dag.Transformation<?>>	getTransitivePredecessors()
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.

从类继承的方法 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, setBufferTimeout, setCoLocationGroupKey, setDescription, setMaxParallelism, setName, setOutputType, setParallelism, setResources, setSlotSharingGroup, setSlotSharingGroup, setUid, setUidHash, toString, updateManagedMemoryStateBackendUseCase

从类继承的方法 java.lang.Object

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

构造器详细资料

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)

Creates a new LegacySourceTransformation from the given operator.

参数:

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

LegacySourceTransformation

public LegacySourceTransformation(String name,
                                  StreamOperatorFactory<T> operatorFactory,
                                  org.apache.flink.api.common.typeinfo.TypeInformation<T> outputType,
                                  int parallelism,
                                  org.apache.flink.api.connector.source.Boundedness boundedness)

方法详细资料

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()

从接口复制的说明: WithBoundedness

Returns the Boundedness of this Transformation.

指定者:

getBoundedness 在接口中 WithBoundedness

getOperator

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

getOperatorFactory

public StreamOperatorFactory<T> getOperatorFactory()

Returns the StreamOperatorFactory of this LegacySourceTransformation.

getTransitivePredecessors

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

指定者:

getTransitivePredecessors 在类中 org.apache.flink.api.dag.Transformation<T>

getInputs

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

指定者:

getInputs 在类中 org.apache.flink.api.dag.Transformation<T>

setChainingStrategy

public final void setChainingStrategy(ChainingStrategy strategy)

从类复制的说明: PhysicalTransformation

Sets the chaining strategy of this Transformation.

指定者:

setChainingStrategy 在类中 PhysicalTransformation<T>