Package com.twilio.kudu.sql.mutation

Class CubeMaintainer

java.lang.Object

com.twilio.kudu.sql.mutation.CubeMaintainer

public class CubeMaintainer
extends Object

Used to calculate aggregated values and upsert rows to the kudu cube tables

Constructor Summary

Constructors

Constructor	Description
CubeMaintainer(CalciteKuduTable cubeCalciteKuduTable, CalciteKuduTable factCalciteKuduTable)

Method Summary

Modifier and Type	Method	Description
org.apache.kudu.util.Pair<Object[],Object[]>	generateCubeDelta(Map<Integer,Object> colIndexToValueMap)	Remaps the fact table columns to the cube table pk columns (dimensions) and the cube table non pk columns (measures) Also truncates the event time column to the cube rollup time
Iterator<Integer>	gePKColumnIndexes()
long	getFloorMod()	TODO support month and year
Iterator<Integer>	getNonPKColumnIndexes()

Methods inherited from class java.lang.Object

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

Constructor Detail

CubeMaintainer

public CubeMaintainer(CalciteKuduTable cubeCalciteKuduTable,
                      CalciteKuduTable factCalciteKuduTable)

Method Detail

getFloorMod

public long getFloorMod()

TODO support month and year

Returns:

the mod value used to truncate the timestamp

generateCubeDelta

public org.apache.kudu.util.Pair<Object[],Object[]> generateCubeDelta(Map<Integer,Object> colIndexToValueMap)

Remaps the fact table columns to the cube table pk columns (dimensions) and the cube table non pk columns (measures) Also truncates the event time column to the cube rollup time

Parameters:

colIndexToValueMap - map from fact table column index to column value

Returns:

pair of array of pk column values and array of non-pk column values

getNonPKColumnIndexes

public Iterator<Integer> getNonPKColumnIndexes()

gePKColumnIndexes

public Iterator<Integer> gePKColumnIndexes()