Class ExtensibleDirectEvaluationStatistics

java.lang.Object

org.eclipse.rdf4j.query.algebra.evaluation.impl.EvaluationStatistics

org.eclipse.rdf4j.sail.extensiblestore.evaluationstatistics.ExtensibleEvaluationStatistics

org.eclipse.rdf4j.sail.extensiblestore.evaluationstatistics.ExtensibleDirectEvaluationStatistics

@Experimental
public class ExtensibleDirectEvaluationStatistics
extends ExtensibleEvaluationStatistics

ExtensibleDirectEvaluationStatistics provides evaluation statistics by directly querying the underlying data source.

Nested Class Summary

Nested classes/interfaces inherited from class EvaluationStatistics

EvaluationStatistics.CardinalityCalculator, EvaluationStatistics.FilterPassEstimate

Modifier and Type	Class	Description
protected static class	EvaluationStatistics.CardinalityCalculator
static final class	EvaluationStatistics.FilterPassEstimate

Constructor Summary

Constructors

Constructor	Description
ExtensibleDirectEvaluationStatistics(ExtensibleSailStore extensibleSailStore)

Method Summary

Modifier and Type	Method	Description
protected EvaluationStatistics.CardinalityCalculator	createCardinalityCalculator()

Methods inherited from class EvaluationStatistics

estimateFilterPass, estimateFilterPassRatio, getCardinality, recordFilterOutcome, supportsFilterSelectivityCosting, supportsJoinEstimation

Modifier and Type	Method	Description
EvaluationStatistics.FilterPassEstimate	estimateFilterPass(Filter filter)
double	estimateFilterPassRatio(Filter filter)
double	getCardinality(TupleExpr expr)
void	recordFilterOutcome(Filter filter, long passedCount, long filteredCount)
boolean	supportsFilterSelectivityCosting()
boolean	supportsJoinEstimation()

Methods inherited from class Object

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

Constructor Details

ExtensibleDirectEvaluationStatistics

public ExtensibleDirectEvaluationStatistics(ExtensibleSailStore extensibleSailStore)

Method Details

createCardinalityCalculator

protected EvaluationStatistics.CardinalityCalculator createCardinalityCalculator()

Specified by:

createCardinalityCalculator in class ExtensibleEvaluationStatistics