org.openrdf.sail.federation.optimizers
Class EvaluationStatistics.CardinalityCalculator

java.lang.Object
  org.openrdf.query.algebra.helpers.QueryModelVisitorBase<RuntimeException>
      org.openrdf.sail.federation.optimizers.EvaluationStatistics.CardinalityCalculator

All Implemented Interfaces:

QueryModelVisitor<RuntimeException>

Enclosing class:

EvaluationStatistics

protected static class EvaluationStatistics.CardinalityCalculator
extends QueryModelVisitorBase<RuntimeException>

Field Summary

protected double

cardinality

Constructor Summary

protected

EvaluationStatistics.CardinalityCalculator()

Method Summary

protected int	countConstantVars(Iterable<Var> vars)
double	getCardinality()
protected double	getCardinality(StatementPattern sp)
void	meet(EmptySet node)
void	meet(Join node)
void	meet(LeftJoin node)
void	meet(SingletonSet node)
void	meet(StatementPattern sp)
protected void	meetBinaryTupleOperator(BinaryTupleOperator node)
void	meetMultiJoin(NaryJoin node)
void	meetOther(QueryModelNode node)

Methods inherited from class org.openrdf.query.algebra.helpers.QueryModelVisitorBase

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, meetNode, meetSubQueryValueOperator, meetUnaryTupleOperator, meetUnaryValueOperator

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

EvaluationStatistics.CardinalityCalculator

protected EvaluationStatistics.CardinalityCalculator()

Method Detail

getCardinality

public double getCardinality()

meet

public void meet(EmptySet node)

Specified by:

meet in interface QueryModelVisitor<RuntimeException>

Overrides:

meet in class QueryModelVisitorBase<RuntimeException>

meet

public void meet(SingletonSet node)

Specified by:

meet in interface QueryModelVisitor<RuntimeException>

Overrides:

meet in class QueryModelVisitorBase<RuntimeException>

meet

public void meet(StatementPattern sp)

Specified by:

meet in interface QueryModelVisitor<RuntimeException>

Overrides:

meet in class QueryModelVisitorBase<RuntimeException>

getCardinality

protected double getCardinality(StatementPattern sp)

countConstantVars

protected int countConstantVars(Iterable<Var> vars)

meetOther

public void meetOther(QueryModelNode node)

Specified by:

meetOther in interface QueryModelVisitor<RuntimeException>

Overrides:

meetOther in class QueryModelVisitorBase<RuntimeException>

meetMultiJoin

public void meetMultiJoin(NaryJoin node)

meet

public void meet(Join node)

Specified by:

meet in interface QueryModelVisitor<RuntimeException>

Overrides:

meet in class QueryModelVisitorBase<RuntimeException>

meet

public void meet(LeftJoin node)

Specified by:

meet in interface QueryModelVisitor<RuntimeException>

Overrides:

meet in class QueryModelVisitorBase<RuntimeException>

meetBinaryTupleOperator

protected void meetBinaryTupleOperator(BinaryTupleOperator node)

Overrides:

meetBinaryTupleOperator in class QueryModelVisitorBase<RuntimeException>