Packages

c

org.apache.spark.sql.execution.window

OffsetWindowFunctionFrameBase

abstract class OffsetWindowFunctionFrameBase extends WindowFunctionFrame

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

Linear Supertypes
WindowFunctionFrame, AnyRef, Any
Known Subclasses
FrameLessOffsetWindowFunctionFrame, UnboundedOffsetWindowFunctionFrame, UnboundedPrecedingOffsetWindowFunctionFrame
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Inherited
  1. OffsetWindowFunctionFrameBase
  2. WindowFunctionFrame
  3. AnyRef
  4. Any
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Visibility
  1. Public
  2. All

Instance Constructors

  1. new OffsetWindowFunctionFrameBase(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.

Abstract Value Members

  1. abstract 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
    WindowFunctionFrame
  2. abstract 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
    WindowFunctionFrame

Concrete 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
    AnyRef → Any
  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
    OffsetWindowFunctionFrameBase → 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
    OffsetWindowFunctionFrameBase → WindowFunctionFrame
  8. final def eq(arg0: AnyRef): Boolean
    Definition Classes
    AnyRef
  9. def equals(arg0: Any): Boolean
    Definition Classes
    AnyRef → Any
  10. val fillDefaultValue: MutableProjection

    Create the projection used when the offset row DOES NOT exists.

    Create the projection used when the offset row DOES NOT exists.

    Attributes
    protected
  11. def finalize(): Unit
    Attributes
    protected[lang]
    Definition Classes
    AnyRef
    Annotations
    @throws( classOf[java.lang.Throwable] )
  12. final def getClass(): Class[_]
    Definition Classes
    AnyRef → Any
    Annotations
    @native()
  13. def hashCode(): Int
    Definition Classes
    AnyRef → Any
    Annotations
    @native()
  14. var input: ExternalAppendOnlyUnsafeRowArray

    Rows of the partition currently being processed.

    Rows of the partition currently being processed.

    Attributes
    protected
  15. var inputIndex: Int

    Index of the input row currently used for output.

    Index of the input row currently used for output.

    Attributes
    protected
  16. var inputIterator: Iterator[UnsafeRow]

    An iterator over the input

    An iterator over the input

    Attributes
    protected
  17. final def isInstanceOf[T0]: Boolean
    Definition Classes
    Any
  18. final def ne(arg0: AnyRef): Boolean
    Definition Classes
    AnyRef
  19. final def notify(): Unit
    Definition Classes
    AnyRef
    Annotations
    @native()
  20. final def notifyAll(): Unit
    Definition Classes
    AnyRef
    Annotations
    @native()
  21. val projection: MutableProjection

    Create the projection used when the offset row exists.

    Create the projection used when the offset row exists. Please note that this project always respect null input values (like PostgreSQL).

    Attributes
    protected
  22. final def synchronized[T0](arg0: ⇒ T0): T0
    Definition Classes
    AnyRef
  23. def toString(): String
    Definition Classes
    AnyRef → Any
  24. final def wait(): Unit
    Definition Classes
    AnyRef
    Annotations
    @throws( ... )
  25. final def wait(arg0: Long, arg1: Int): Unit
    Definition Classes
    AnyRef
    Annotations
    @throws( ... )
  26. final def wait(arg0: Long): Unit
    Definition Classes
    AnyRef
    Annotations
    @throws( ... ) @native()

Inherited from WindowFunctionFrame

Inherited from AnyRef

Inherited from Any

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