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

Class LegacySourceTransformation<T>

  • Type Parameters:
    T - The type of the elements that this source produces
    All Implemented Interfaces:
    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.

    • 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

      All Methods Instance Methods Concrete Methods 
      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.api.dag.Transformation

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

    • 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>