ai.rapids.cudf

Class WindowOptions.Builder

java.lang.Object

ai.rapids.cudf.WindowOptions.Builder

Enclosing class:

WindowOptions

public static class WindowOptions.Builder
extends Object

Constructor Summary

Constructors

Constructor and Description
Builder()

Method Summary

Modifier and Type	Method and Description
WindowOptions	build()
WindowOptions.Builder	minPeriods(int minPeriods) Set the minimum number of observation required to evaluate an element.
WindowOptions.Builder	timestampAscending()
WindowOptions.Builder	timestampColumnIndex(int index)
WindowOptions.Builder	timestampDescending()
WindowOptions.Builder	window(ColumnVector precedingCol, ColumnVector followingCol) Set the size of the window, one entry per row.
WindowOptions.Builder	window(int preceding, int following) Set the size of the window.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

Builder

public Builder()

Method Detail

minPeriods

public WindowOptions.Builder minPeriods(int minPeriods)

Set the minimum number of observation required to evaluate an element. If there are not enough elements for a given window a null is placed in the result instead.

window

public WindowOptions.Builder window(ColumnVector precedingCol,
                                    ColumnVector followingCol)

Set the size of the window, one entry per row. This does not take ownership of the columns passed in so you have to be sure that the life time of the column outlives this operation.

Parameters:

precedingCol - the number of rows preceding the current row.

followingCol - the number of rows following the current row.

timestampColumnIndex

public WindowOptions.Builder timestampColumnIndex(int index)

timestampAscending

public WindowOptions.Builder timestampAscending()

timestampDescending

public WindowOptions.Builder timestampDescending()

window

public WindowOptions.Builder window(int preceding,
                                    int following)

Set the size of the window.

Parameters:

preceding - the number of rows preceding the current row

following - the number of rows following the current row.

build

public WindowOptions build()