abstract class OffsetWindowFunctionFrameBase extends WindowFunctionFrame
The offset window frame calculates frames containing LEAD/LAG statements.
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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
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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
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abstract
def
write(index: Int, current: InternalRow): Unit
Write the current results to the target row.
Write the current results to the target row.
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- WindowFunctionFrame
Concrete Value Members
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final
def
!=(arg0: Any): Boolean
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final
def
##(): Int
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final
def
==(arg0: Any): Boolean
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final
def
asInstanceOf[T0]: T0
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def
clone(): AnyRef
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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
-
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
-
final
def
eq(arg0: AnyRef): Boolean
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def
equals(arg0: Any): Boolean
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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.
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- protected
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def
finalize(): Unit
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- @throws( classOf[java.lang.Throwable] )
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def
findNextRowWithNonNullInput(): Unit
find the offset row whose input is not null
find the offset row whose input is not null
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final
def
getClass(): Class[_]
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def
hashCode(): Int
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var
input: ExternalAppendOnlyUnsafeRowArray
Rows of the partition currently being processed.
Rows of the partition currently being processed.
- Attributes
- protected
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val
inputAttrs: Seq[Attribute]
Attributes of the input row currently used for output.
Attributes of the input row currently used for output.
- Attributes
- protected
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var
inputIndex: Int
Index of the input row currently used for output.
Index of the input row currently used for output.
- Attributes
- protected
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var
inputIterator: Iterator[UnsafeRow]
An iterator over the input
An iterator over the input
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final
def
isInstanceOf[T0]: Boolean
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final
def
ne(arg0: AnyRef): Boolean
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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.
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final
def
notify(): Unit
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final
def
notifyAll(): Unit
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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
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val
project: UnsafeProjection
Create the projection to determine whether input is null.
Create the projection to determine whether input is null.
- Attributes
- protected
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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
-
def
resetStates(rows: ExternalAppendOnlyUnsafeRowArray): Unit
- Attributes
- protected
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var
skippedNonNullCount: Int
- Attributes
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final
def
synchronized[T0](arg0: ⇒ T0): T0
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def
toString(): String
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final
def
wait(): Unit
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def
wait(arg0: Long, arg1: Int): Unit
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def
wait(arg0: Long): Unit
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