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c

org.apache.spark.sql.execution.window

OffsetWindowFunctionFrame

final class OffsetWindowFunctionFrame extends WindowFunctionFrame

The offset window frame calculates frames containing LEAD/LAG statements.

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WindowFunctionFrame, AnyRef, Any
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  1. OffsetWindowFunctionFrame
  2. WindowFunctionFrame
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Instance Constructors

  1. new OffsetWindowFunctionFrame(target: InternalRow, ordinal: Int, expressions: Array[OffsetWindowFunction], inputSchema: Seq[Attribute], newMutableProjection: (Seq[Expression], Seq[Attribute]) ⇒ MutableProjection, offset: Int)

    target

    to write results to.

    ordinal

    the ordinal is the starting offset at which the results of the window frame get written into the (shared) target row. The result of the frame expression with index 'i' will be written to the 'ordinal' + 'i' position in the target row.

    expressions

    to shift a number of rows.

    inputSchema

    required for creating a projection.

    newMutableProjection

    function used to create the projection.

    offset

    by which rows get moved within a partition.

Value Members

  1. final def !=(arg0: Any): Boolean
    Definition Classes
    AnyRef → Any
  2. final def ##(): Int
    Definition Classes
    AnyRef → Any
  3. final def ==(arg0: Any): Boolean
    Definition Classes
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  4. final def asInstanceOf[T0]: T0
    Definition Classes
    Any
  5. def clone(): AnyRef
    Attributes
    protected[lang]
    Definition Classes
    AnyRef
    Annotations
    @throws( ... ) @native()
  6. def currentLowerBound(): Int

    The current lower window bound in the row array (inclusive).

    The current lower window bound in the row array (inclusive).

    This should be called after the current row is updated via write.

    Definition Classes
    OffsetWindowFunctionFrame → WindowFunctionFrame
  7. def currentUpperBound(): Int

    The current row index of the upper window bound in the row array (exclusive)

    The current row index of the upper window bound in the row array (exclusive)

    This should be called after the current row is updated via write.

    Definition Classes
    OffsetWindowFunctionFrame → WindowFunctionFrame
  8. final def eq(arg0: AnyRef): Boolean
    Definition Classes
    AnyRef
  9. def equals(arg0: Any): Boolean
    Definition Classes
    AnyRef → Any
  10. def finalize(): Unit
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    protected[lang]
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    @throws( classOf[java.lang.Throwable] )
  11. final def getClass(): Class[_]
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    @native()
  12. def hashCode(): Int
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    @native()
  13. final def isInstanceOf[T0]: Boolean
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    Any
  14. final def ne(arg0: AnyRef): Boolean
    Definition Classes
    AnyRef
  15. final def notify(): Unit
    Definition Classes
    AnyRef
    Annotations
    @native()
  16. final def notifyAll(): Unit
    Definition Classes
    AnyRef
    Annotations
    @native()
  17. def prepare(rows: ExternalAppendOnlyUnsafeRowArray): Unit

    Prepare the frame for calculating the results for a partition.

    Prepare the frame for calculating the results for a partition.

    rows

    to calculate the frame results for.

    Definition Classes
    OffsetWindowFunctionFrame → WindowFunctionFrame
  18. final def synchronized[T0](arg0: ⇒ T0): T0
    Definition Classes
    AnyRef
  19. def toString(): String
    Definition Classes
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  20. final def wait(): Unit
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    @throws( ... )
  21. final def wait(arg0: Long, arg1: Int): Unit
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    @throws( ... )
  22. final def wait(arg0: Long): Unit
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    @throws( ... ) @native()
  23. def write(index: Int, current: InternalRow): Unit

    Write the current results to the target row.

    Write the current results to the target row.

    Definition Classes
    OffsetWindowFunctionFrame → WindowFunctionFrame

Inherited from WindowFunctionFrame

Inherited from AnyRef

Inherited from Any

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