Package io.trino.cost

Class PlanNodeStatsEstimate

java.lang.Object

io.trino.cost.PlanNodeStatsEstimate

public class PlanNodeStatsEstimate
extends Object

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static final class	PlanNodeStatsEstimate.Builder

Constructor Summary

Constructors

Constructor	Description
PlanNodeStatsEstimate(double outputRowCount, Map<Symbol,SymbolStatsEstimate> symbolStatistics)

Method Summary

Modifier and Type	Method	Description
static PlanNodeStatsEstimate.Builder	builder()
static PlanNodeStatsEstimate.Builder	buildFrom(PlanNodeStatsEstimate other)
boolean	equals(Object o)
double	getOutputRowCount()	Returns estimated number of rows.
double	getOutputSizeInBytes(Collection<Symbol> outputSymbols)	Returns estimated data size.
Map<Symbol,SymbolStatsEstimate>	getSymbolStatistics()
SymbolStatsEstimate	getSymbolStatistics(Symbol symbol)
Set<Symbol>	getSymbolsWithKnownStatistics()
int	hashCode()
boolean	isOutputRowCountUnknown()
PlanNodeStatsEstimate	mapOutputRowCount(Function<Double,Double> mappingFunction)
PlanNodeStatsEstimate	mapSymbolColumnStatistics(Symbol symbol, Function<SymbolStatsEstimate,SymbolStatsEstimate> mappingFunction)
String	toString()
static PlanNodeStatsEstimate	unknown()

Methods inherited from class java.lang.Object

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

Constructor Details

PlanNodeStatsEstimate

public PlanNodeStatsEstimate(double outputRowCount,
 Map<Symbol,SymbolStatsEstimate> symbolStatistics)

Method Details

unknown

public static PlanNodeStatsEstimate unknown()

getOutputRowCount

public double getOutputRowCount()

Returns estimated number of rows. Unknown value is represented by Double.NaN

getOutputSizeInBytes

public double getOutputSizeInBytes(Collection<Symbol> outputSymbols)

Returns estimated data size. Unknown value is represented by Double.NaN

mapOutputRowCount

public PlanNodeStatsEstimate mapOutputRowCount(Function<Double,Double> mappingFunction)

mapSymbolColumnStatistics

public PlanNodeStatsEstimate mapSymbolColumnStatistics(Symbol symbol,
 Function<SymbolStatsEstimate,SymbolStatsEstimate> mappingFunction)

getSymbolStatistics

public SymbolStatsEstimate getSymbolStatistics(Symbol symbol)

getSymbolStatistics

public Map<Symbol,SymbolStatsEstimate> getSymbolStatistics()

getSymbolsWithKnownStatistics

public Set<Symbol> getSymbolsWithKnownStatistics()

isOutputRowCountUnknown

public boolean isOutputRowCountUnknown()

toString

public String toString()

Overrides:

toString in class Object

equals

public boolean equals(Object o)

Overrides:

equals in class Object

hashCode

public int hashCode()

Overrides:

hashCode in class Object

builder

public static PlanNodeStatsEstimate.Builder builder()

buildFrom

public static PlanNodeStatsEstimate.Builder buildFrom(PlanNodeStatsEstimate other)