org.openrdf.sail.memory

Class MemoryStoreConnection.MemEvaluationStatistics

java.lang.Object

org.openrdf.query.algebra.evaluation.impl.EvaluationStatistics

org.openrdf.sail.memory.MemoryStoreConnection.MemEvaluationStatistics

Enclosing class:

MemoryStoreConnection

protected class MemoryStoreConnection.MemEvaluationStatistics
extends EvaluationStatistics

Uses the MemoryStore's statement sizes to give cost estimates based on the size of the expected results. This process could be improved with repository statistics about size and distribution of statements.

Author:

Arjohn Kampman, James Leigh

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
protected class	MemoryStoreConnection.MemEvaluationStatistics.MemCardinalityCalculator

Nested classes/interfaces inherited from class org.openrdf.query.algebra.evaluation.impl.EvaluationStatistics

EvaluationStatistics.CardinalityCalculator

Field Summary

Fields inherited from class org.openrdf.query.algebra.evaluation.impl.EvaluationStatistics

cc

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	MemEvaluationStatistics()

Method Summary

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

Methods inherited from class org.openrdf.query.algebra.evaluation.impl.EvaluationStatistics

getCardinality

Methods inherited from class java.lang.Object

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

Constructor Detail

MemEvaluationStatistics

protected MemEvaluationStatistics()

Method Detail

createCardinalityCalculator

protected EvaluationStatistics.CardinalityCalculator createCardinalityCalculator()

Overrides:

createCardinalityCalculator in class EvaluationStatistics