com.facebook.presto.spi.statistics

Class ColumnStatistics

java.lang.Object

com.facebook.presto.spi.statistics.ColumnStatistics

public final class ColumnStatistics
extends Object

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	ColumnStatistics.Builder If one of the estimates below is unspecified, the default "unknown" estimate value (represented by floating point NaN) may cause the resulting symbol statistics to be "unknown" as well.

Constructor Summary

Constructors

Constructor and Description
ColumnStatistics(Estimate nullsFraction, Estimate distinctValuesCount, Estimate dataSize, Optional<DoubleRange> range)

Method Summary

Modifier and Type	Method and Description
static ColumnStatistics.Builder	builder()
static ColumnStatistics	empty()
boolean	equals(Object o)
Estimate	getDataSize()
Estimate	getDistinctValuesCount()
Estimate	getNullsFraction()
Optional<DoubleRange>	getRange()
int	hashCode()
String	toString()

Methods inherited from class java.lang.Object

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

Constructor Detail

ColumnStatistics

public ColumnStatistics(Estimate nullsFraction,
                        Estimate distinctValuesCount,
                        Estimate dataSize,
                        Optional<DoubleRange> range)

Method Detail

empty

public static ColumnStatistics empty()

getNullsFraction

public Estimate getNullsFraction()

getDistinctValuesCount

public Estimate getDistinctValuesCount()

getDataSize

public Estimate getDataSize()

getRange

public Optional<DoubleRange> getRange()

equals

public boolean equals(Object o)

Overrides:

equals in class Object

hashCode

public int hashCode()

Overrides:

hashCode in class Object

toString

public String toString()

Overrides:

toString in class Object

builder

public static ColumnStatistics.Builder builder()