io.prestosql.operator.aggregation

Class AggregationUtils

java.lang.Object

io.prestosql.operator.aggregation.AggregationUtils

public final class AggregationUtils
extends Object

Method Summary

Modifier and Type	Method and Description
static String	generateAggregationName(String baseName, TypeSignature outputType, List<TypeSignature> inputTypes)
static double	getCorrelation(CorrelationState state)
static double	getCovariancePopulation(CovarianceState state)
static double	getCovarianceSample(CovarianceState state)
static double	getRegressionIntercept(RegressionState state)
static double	getRegressionSlope(RegressionState state)
static void	mergeCentralMomentsState(CentralMomentsState state, CentralMomentsState otherState)
static void	mergeCorrelationState(CorrelationState state, CorrelationState otherState)
static void	mergeCovarianceState(CovarianceState state, CovarianceState otherState)
static void	mergeRegressionState(RegressionState state, RegressionState otherState)
static void	mergeVarianceState(VarianceState state, VarianceState otherState)
static Function<Integer,Block>	pageBlockGetter(Page page)
static void	updateCentralMomentsState(CentralMomentsState state, double value)
static void	updateCorrelationState(CorrelationState state, double x, double y)
static void	updateCovarianceState(CovarianceState state, double x, double y)
static void	updateRegressionState(RegressionState state, double x, double y)
static void	updateVarianceState(VarianceState state, double value)

Methods inherited from class java.lang.Object

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

Method Detail

updateVarianceState

public static void updateVarianceState(VarianceState state,
                                       double value)

updateCentralMomentsState

public static void updateCentralMomentsState(CentralMomentsState state,
                                             double value)

updateCovarianceState

public static void updateCovarianceState(CovarianceState state,
                                         double x,
                                         double y)

getCovarianceSample

public static double getCovarianceSample(CovarianceState state)

getCovariancePopulation

public static double getCovariancePopulation(CovarianceState state)

updateCorrelationState

public static void updateCorrelationState(CorrelationState state,
                                          double x,
                                          double y)

getCorrelation

public static double getCorrelation(CorrelationState state)

updateRegressionState

public static void updateRegressionState(RegressionState state,
                                         double x,
                                         double y)

getRegressionSlope

public static double getRegressionSlope(RegressionState state)

getRegressionIntercept

public static double getRegressionIntercept(RegressionState state)

mergeVarianceState

public static void mergeVarianceState(VarianceState state,
                                      VarianceState otherState)

mergeCentralMomentsState

public static void mergeCentralMomentsState(CentralMomentsState state,
                                            CentralMomentsState otherState)

mergeCovarianceState

public static void mergeCovarianceState(CovarianceState state,
                                        CovarianceState otherState)

mergeCorrelationState

public static void mergeCorrelationState(CorrelationState state,
                                         CorrelationState otherState)

mergeRegressionState

public static void mergeRegressionState(RegressionState state,
                                        RegressionState otherState)

generateAggregationName

public static String generateAggregationName(String baseName,
                                             TypeSignature outputType,
                                             List<TypeSignature> inputTypes)

pageBlockGetter

public static Function<Integer,Block> pageBlockGetter(Page page)