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.
    final 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, enableAsyncState, 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 Details

    • 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 Details

    • 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>