Packages

c

org.apache.spark.sql.execution.window

UnboundedOffsetWindowFunctionFrame

class UnboundedOffsetWindowFunctionFrame extends OffsetWindowFunctionFrameBase

The unbounded offset window frame is an internal window frame just used to optimize the performance for the window function that returns the value of the input column offset by a number of rows within the frame and has specified ROWS BETWEEN UNBOUNDED PRECEDING AND UNBOUNDED FOLLOWING. The internal window frame is not a popular window frame cannot be specified and used directly by the users. The unbounded offset window frame calculates frames containing NTH_VALUE statements. The unbounded offset window frame return the same value for all rows in the window partition.

Linear Supertypes
OffsetWindowFunctionFrameBase, WindowFunctionFrame, AnyRef, Any
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Inherited
  1. UnboundedOffsetWindowFunctionFrame
  2. OffsetWindowFunctionFrameBase
  3. WindowFunctionFrame
  4. AnyRef
  5. Any
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Visibility
  1. Public
  2. All

Instance Constructors

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

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
    Definition Classes
    OffsetWindowFunctionFrameBase
  11. def finalize(): Unit
    Attributes
    protected[lang]
    Definition Classes
    AnyRef
    Annotations
    @throws( classOf[java.lang.Throwable] )
  12. def findNextRowWithNonNullInput(): Unit

    find the offset row whose input is not null

    find the offset row whose input is not null

    Attributes
    protected
    Definition Classes
    OffsetWindowFunctionFrameBase
  13. final def getClass(): Class[_]
    Definition Classes
    AnyRef → Any
    Annotations
    @native()
  14. def hashCode(): Int
    Definition Classes
    AnyRef → Any
    Annotations
    @native()
  15. var input: ExternalAppendOnlyUnsafeRowArray

    Rows of the partition currently being processed.

    Rows of the partition currently being processed.

    Attributes
    protected
    Definition Classes
    OffsetWindowFunctionFrameBase
  16. val inputAttrs: Seq[Attribute]

    Attributes of the input row currently used for output.

    Attributes of the input row currently used for output.

    Attributes
    protected
    Definition Classes
    OffsetWindowFunctionFrameBase
  17. var inputIndex: Int

    Index of the input row currently used for output.

    Index of the input row currently used for output.

    Attributes
    protected
    Definition Classes
    OffsetWindowFunctionFrameBase
  18. var inputIterator: Iterator[UnsafeRow]

    An iterator over the input

    An iterator over the input

    Attributes
    protected
    Definition Classes
    OffsetWindowFunctionFrameBase
  19. final def isInstanceOf[T0]: Boolean
    Definition Classes
    Any
  20. final def ne(arg0: AnyRef): Boolean
    Definition Classes
    AnyRef
  21. var nextSelectedRow: InternalRow

    Holder the UnsafeRow where the input operator by function is not null.

    Holder the UnsafeRow where the input operator by function is not null.

    Attributes
    protected
    Definition Classes
    OffsetWindowFunctionFrameBase
  22. final def notify(): Unit
    Definition Classes
    AnyRef
    Annotations
    @native()
  23. final def notifyAll(): Unit
    Definition Classes
    AnyRef
    Annotations
    @native()
  24. def nullCheck(row: InternalRow): Boolean

    Check if the output value of the first index is null.

    Check if the output value of the first index is null.

    Attributes
    protected
    Definition Classes
    OffsetWindowFunctionFrameBase
  25. 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
    UnboundedOffsetWindowFunctionFrame → WindowFunctionFrame
  26. val project: UnsafeProjection

    Create the projection to determine whether input is null.

    Create the projection to determine whether input is null.

    Attributes
    protected
    Definition Classes
    OffsetWindowFunctionFrameBase
  27. 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
    Definition Classes
    OffsetWindowFunctionFrameBase
  28. def resetStates(rows: ExternalAppendOnlyUnsafeRowArray): Unit
    Attributes
    protected
    Definition Classes
    OffsetWindowFunctionFrameBase
  29. var skippedNonNullCount: Int
    Attributes
    protected
    Definition Classes
    OffsetWindowFunctionFrameBase
  30. final def synchronized[T0](arg0: ⇒ T0): T0
    Definition Classes
    AnyRef
  31. def toString(): String
    Definition Classes
    AnyRef → Any
  32. final def wait(): Unit
    Definition Classes
    AnyRef
    Annotations
    @throws( ... )
  33. final def wait(arg0: Long, arg1: Int): Unit
    Definition Classes
    AnyRef
    Annotations
    @throws( ... )
  34. final def wait(arg0: Long): Unit
    Definition Classes
    AnyRef
    Annotations
    @throws( ... ) @native()
  35. 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
    UnboundedOffsetWindowFunctionFrame → WindowFunctionFrame

Inherited from OffsetWindowFunctionFrameBase

Inherited from WindowFunctionFrame

Inherited from AnyRef

Inherited from Any

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