org.apache.flink.api.scala.extensions.impl.acceptPartialFunctions

OnGroupedDataSet

class OnGroupedDataSet[T] extends AnyRef

Wraps a grouped data set, allowing to use anonymous partial functions to perform extraction of items in a tuple, case class instance or collection

T

The type of the grouped data set items

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Instance Constructors

  1. new OnGroupedDataSet(ds: GroupedDataSet[T])

    ds

    The wrapped grouped data set

Value Members

  1. final def !=(arg0: AnyRef): Boolean

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  2. final def !=(arg0: Any): Boolean

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  3. final def ##(): Int

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  4. final def ==(arg0: AnyRef): Boolean

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  5. final def ==(arg0: Any): Boolean

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  6. final def asInstanceOf[T0]: T0

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  7. def clone(): AnyRef

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    @throws( ... )

  8. def combineGroupWith[R](fun: (Stream[T]) ⇒ R)(implicit arg0: TypeInformation[R], arg1: ClassTag[R]): DataSet[R]

    Same as a reducing operation but only acts locally, ideal to perform pre-aggregation before a reduction.

    Same as a reducing operation but only acts locally, ideal to perform pre-aggregation before a reduction.

    R

    The type of the items in the resulting data set

    fun

    The reducing function

    returns

    A data set of Rs reduced group-wise

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    @PublicEvolving()

  9. final def eq(arg0: AnyRef): Boolean

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  10. def equals(arg0: Any): Boolean

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  11. def finalize(): Unit

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  12. final def getClass(): Class[_]

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  13. def hashCode(): Int

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  14. final def isInstanceOf[T0]: Boolean

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  15. final def ne(arg0: AnyRef): Boolean

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  16. final def notify(): Unit

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  17. final def notifyAll(): Unit

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  18. def reduceGroupWith[R](fun: (Stream[T]) ⇒ R)(implicit arg0: TypeInformation[R], arg1: ClassTag[R]): DataSet[R]

    Reduces the data set group-wise with a reducer fun

    Reduces the data set group-wise with a reducer fun

    R

    The type of the items in the resulting data set

    fun

    The reducing function

    returns

    A data set of Rs reduced group-wise

    Annotations
    @PublicEvolving()

  19. def reduceWith(fun: (T, T) ⇒ T): DataSet[T]

    Reduces the whole data set with a reducer fun

    Reduces the whole data set with a reducer fun

    fun

    The reducing function

    returns

    A reduced data set of Ts

    Annotations
    @PublicEvolving()

  20. def sortGroupWith[K](order: Order)(fun: (T) ⇒ K)(implicit arg0: TypeInformation[K]): GroupedDataSet[T]

    Sorts a group using a sorting function fun and an Order

    Sorts a group using a sorting function fun and an Order

    K

    The key type

    order

    The ordering strategy (ascending, descending, etc.)

    fun

    The sorting function, defining the sorting key

    returns

    A data set sorted group-wise

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    @PublicEvolving()

  21. final def synchronized[T0](arg0: ⇒ T0): T0

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  22. def toString(): String

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  23. final def wait(): Unit

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  24. final def wait(arg0: Long, arg1: Int): Unit

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  25. final def wait(arg0: Long): Unit

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