ai.rapids.cudf

Class AggregationOnColumn<T extends Aggregation>

java.lang.Object

ai.rapids.cudf.Aggregation

ai.rapids.cudf.AggregationOnColumn<T>

Direct Known Subclasses:

AggregationOverWindow

public class AggregationOnColumn<T extends Aggregation>
extends Aggregation

An Aggregation instance that also holds a column number so the aggregation can be done on a specific column of data in a table.

Nested Class Summary

Nested classes/interfaces inherited from class ai.rapids.cudf.Aggregation

Aggregation.AllAggregation, Aggregation.AnyAggregation, Aggregation.ArgMaxAggregation, Aggregation.ArgMinAggregation, Aggregation.CollectListAggregation, Aggregation.CountAggregation, Aggregation.LagAggregation, Aggregation.LeadAggregation, Aggregation.MaxAggregation, Aggregation.MeanAggregation, Aggregation.MedianAggregation, Aggregation.MinAggregation, Aggregation.NthAggregation, Aggregation.NuniqueAggregation, Aggregation.ProductAggregation, Aggregation.RowNumberAggregation, Aggregation.StandardDeviationAggregation, Aggregation.SumAggregation, Aggregation.SumOfSquaresAggregation, Aggregation.VarianceAggregation

Field Summary

Fields

Modifier and Type	Field and Description
protected int	columnIndex
protected T	wrapped

Fields inherited from class ai.rapids.cudf.Aggregation

kind

Method Summary

Modifier and Type	Method and Description
boolean	equals(Object other)
int	getColumnIndex()
int	hashCode()
AggregationOnColumn<T>	onColumn(int columnIndex) Add a column to the Aggregation so it can be used on a specific column of data.
<R extends Aggregation & RollingAggregation<R>> AggregationOverWindow<R>	overWindow(WindowOptions windowOptions) Do the aggregation over a given Window.

Methods inherited from class ai.rapids.cudf.Aggregation

all, any, argMax, argMin, collectList, collectList, collectSet, collectSet, count, count, lag, lag, lead, lead, max, mean, median, min, nth, nth, nunique, nunique, product, quantile, quantile, rowNumber, standardDeviation, standardDeviation, sum, sumOfSquares, variance, variance

Methods inherited from class java.lang.Object

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

Field Detail

wrapped

protected final T extends Aggregation wrapped

columnIndex

protected final int columnIndex

Method Detail

onColumn

public AggregationOnColumn<T> onColumn(int columnIndex)

Description copied from class: Aggregation

Add a column to the Aggregation so it can be used on a specific column of data.

Overrides:

onColumn in class Aggregation

Parameters:

columnIndex - the index of the column to operate on.

overWindow

public <R extends Aggregation & RollingAggregation<R>> AggregationOverWindow<R> overWindow(WindowOptions windowOptions)

Do the aggregation over a given Window.

getColumnIndex

public int getColumnIndex()

hashCode

public int hashCode()

Specified by:

hashCode in class Aggregation

equals

public boolean equals(Object other)

Specified by:

equals in class Aggregation