org.eclipse.rdf4j.sail.federation.optimizers

Class EvaluationStatistics.CardinalityCalculator

java.lang.Object

org.eclipse.rdf4j.query.algebra.helpers.AbstractQueryModelVisitor<RuntimeException>

org.eclipse.rdf4j.sail.federation.optimizers.EvaluationStatistics.CardinalityCalculator

All Implemented Interfaces:

QueryModelVisitor<RuntimeException>

Enclosing class:

EvaluationStatistics

protected static class EvaluationStatistics.CardinalityCalculator
extends AbstractQueryModelVisitor<RuntimeException>

Field Summary

Fields

Modifier and Type	Field and Description
protected double	cardinality

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	CardinalityCalculator()

Method Summary

Modifier and Type	Method and Description
protected int	countConstantVars(Iterable<Var> vars)
double	getCardinality()
protected double	getCardinality(StatementPattern pattern)
void	meet(EmptySet node)
void	meet(Join node)
void	meet(LeftJoin node)
void	meet(SingletonSet node)
void	meet(Slice slice)
void	meet(StatementPattern pattern)
protected void	meetBinaryTupleOperator(BinaryTupleOperator node) Method called by all meet methods with a BinaryTupleOperator node as argument.
void	meetMultiJoin(NaryJoin node)
void	meetOther(QueryModelNode node)

Methods inherited from class org.eclipse.rdf4j.query.algebra.helpers.AbstractQueryModelVisitor

meet, meet, meet, meet, meet, meet, meet, meet, meet, meet, meet, meet, meet, meet, meet, meet, meet, meet, meet, meet, meet, meet, meet, meet, meet, meet, meet, meet, meet, meet, meet, meet, meet, meet, meet, meet, meet, meet, meet, meet, meet, meet, meet, meet, meet, meet, meet, meet, meet, meet, meet, meet, meet, meet, meet, meet, meet, meet, meet, meet, meet, meet, meet, meet, meet, meet, meet, meet, meet, meet, meet, meetBinaryValueOperator, meetCompareSubQueryValueOperator, meetNAryValueOperator, meetNode, meetSubQueryValueOperator, meetUnaryTupleOperator, meetUnaryValueOperator, meetUpdateExpr

Methods inherited from class java.lang.Object

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

Field Detail

cardinality

protected double cardinality

Constructor Detail

CardinalityCalculator

protected CardinalityCalculator()

Method Detail

getCardinality

public double getCardinality()

meet

public void meet(EmptySet node)

Specified by:

meet in interface QueryModelVisitor<RuntimeException>

Overrides:

meet in class AbstractQueryModelVisitor<RuntimeException>

meet

public void meet(SingletonSet node)

Specified by:

meet in interface QueryModelVisitor<RuntimeException>

Overrides:

meet in class AbstractQueryModelVisitor<RuntimeException>

meet

public void meet(StatementPattern pattern)

Specified by:

meet in interface QueryModelVisitor<RuntimeException>

Overrides:

meet in class AbstractQueryModelVisitor<RuntimeException>

meet

public void meet(Slice slice)

Specified by:

meet in interface QueryModelVisitor<RuntimeException>

Overrides:

meet in class AbstractQueryModelVisitor<RuntimeException>

getCardinality

protected double getCardinality(StatementPattern pattern)

countConstantVars

protected int countConstantVars(Iterable<Var> vars)

meetOther

public void meetOther(QueryModelNode node)

Specified by:

meetOther in interface QueryModelVisitor<RuntimeException>

Overrides:

meetOther in class AbstractQueryModelVisitor<RuntimeException>

meetMultiJoin

public void meetMultiJoin(NaryJoin node)

meet

public void meet(Join node)

Specified by:

meet in interface QueryModelVisitor<RuntimeException>

Overrides:

meet in class AbstractQueryModelVisitor<RuntimeException>

meet

public void meet(LeftJoin node)

Specified by:

meet in interface QueryModelVisitor<RuntimeException>

Overrides:

meet in class AbstractQueryModelVisitor<RuntimeException>

meetBinaryTupleOperator

protected void meetBinaryTupleOperator(BinaryTupleOperator node)

Description copied from class: AbstractQueryModelVisitor

Method called by all meet methods with a BinaryTupleOperator node as argument. Forwards the call to AbstractQueryModelVisitor.meetNode(org.eclipse.rdf4j.query.algebra.QueryModelNode) by default.

Overrides:

meetBinaryTupleOperator in class AbstractQueryModelVisitor<RuntimeException>

Parameters:

node - The node that is being visited.