Class SketchBasedJoinEstimator.AccessShape

java.lang.Object

org.eclipse.rdf4j.query.algebra.evaluation.sketch.SketchBasedJoinEstimator.AccessShape

Enclosing class:

SketchBasedJoinEstimator

public static final class SketchBasedJoinEstimator.AccessShape
extends Object

Method Summary

Modifier and Type	Method	Description
double	estimateAccessRows(int prefixMask)
double	estimateAccessRows(Set<SketchBasedJoinEstimator.Component> prefixComponents)
int	filterLookupComponentMask()
Set<SketchBasedJoinEstimator.Component>	filterLookupComponents()
double	filterMultiplier()
boolean	isDirectLookup(int prefixMask)
boolean	isDirectLookup(Set<SketchBasedJoinEstimator.Component> prefixComponents)
int	joinBoundComponentMask()
String	joinBoundVarName(SketchBasedJoinEstimator.Component component)
int	lookupBoundComponentMask()
Set<SketchBasedJoinEstimator.Component>	lookupBoundComponents()
StatementPattern	pattern()

Methods inherited from class Object

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

Method Details

pattern

public StatementPattern pattern()

filterMultiplier

public double filterMultiplier()

joinBoundComponentMask

public int joinBoundComponentMask()

joinBoundVarName

public String joinBoundVarName(SketchBasedJoinEstimator.Component component)

filterLookupComponents

public Set<SketchBasedJoinEstimator.Component> filterLookupComponents()

filterLookupComponentMask

public int filterLookupComponentMask()

lookupBoundComponents

public Set<SketchBasedJoinEstimator.Component> lookupBoundComponents()

lookupBoundComponentMask

public int lookupBoundComponentMask()

estimateAccessRows

public double estimateAccessRows(Set<SketchBasedJoinEstimator.Component> prefixComponents)

estimateAccessRows

public double estimateAccessRows(int prefixMask)

isDirectLookup

public boolean isDirectLookup(Set<SketchBasedJoinEstimator.Component> prefixComponents)

isDirectLookup

public boolean isDirectLookup(int prefixMask)