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

Class UnionTransformation<T>

java.lang.Object
org.apache.flink.api.dag.Transformation<T>
org.apache.flink.streaming.api.transformations.UnionTransformation<T>
Type Parameters:
T - The type of the elements that result from this UnionTransformation
@Internal public class UnionTransformation<T> extends org.apache.flink.api.dag.Transformation<T>
This transformation represents a union of several input Transformations.

This does not create a physical operation, it only affects how upstream operations are connected to downstream operations.

  • 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
    UnionTransformation(List<org.apache.flink.api.dag.Transformation<T>> inputs)
    Creates a new UnionTransformation from the given input Transformations.

  • Method Summary

    Modifier and Type
    Method
    Description
    List<org.apache.flink.api.dag.Transformation<?>>
    getInputs()
     
    protected List<org.apache.flink.api.dag.Transformation<?>>
    getTransitivePredecessorsInternal()
     

    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

    • UnionTransformation

      public UnionTransformation(List<org.apache.flink.api.dag.Transformation<T>> inputs)
      Creates a new UnionTransformation from the given input Transformations.

      The input Transformations must all have the same type.

      Parameters:
      inputs - The list of input Transformations

  • Method Details

    • getInputs

      public List<org.apache.flink.api.dag.Transformation<?>> getInputs()
      Specified by:
      getInputs in class org.apache.flink.api.dag.Transformation<T>

    • getTransitivePredecessorsInternal

      protected List<org.apache.flink.api.dag.Transformation<?>> getTransitivePredecessorsInternal()
      Specified by:
      getTransitivePredecessorsInternal in class org.apache.flink.api.dag.Transformation<T>