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

Class QueryModelNormalizer

java.lang.Object

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

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

All Implemented Interfaces:

QueryOptimizer, org.eclipse.rdf4j.query.algebra.QueryModelVisitor<RuntimeException>

public class QueryModelNormalizer
extends org.eclipse.rdf4j.query.algebra.helpers.AbstractQueryModelVisitor<RuntimeException>
implements QueryOptimizer

A query optimizer that (partially) normalizes query models to a canonical form. Note: this implementation does not yet cover all query node types.

Author:

Arjohn Kampman

Constructor Summary

Constructors

Constructor and Description
QueryModelNormalizer()

Method Summary

Modifier and Type	Method and Description
void	meet(org.eclipse.rdf4j.query.algebra.And and)
void	meet(org.eclipse.rdf4j.query.algebra.Difference difference)
void	meet(org.eclipse.rdf4j.query.algebra.Filter node)
void	meet(org.eclipse.rdf4j.query.algebra.Intersection intersection)
void	meet(org.eclipse.rdf4j.query.algebra.Join join)
void	meet(org.eclipse.rdf4j.query.algebra.LeftJoin leftJoin)
void	meet(org.eclipse.rdf4j.query.algebra.Or or)
void	meet(org.eclipse.rdf4j.query.algebra.Union union)
protected void	meetUnaryTupleOperator(org.eclipse.rdf4j.query.algebra.UnaryTupleOperator node)
void	optimize(org.eclipse.rdf4j.query.algebra.TupleExpr tupleExpr, org.eclipse.rdf4j.query.Dataset dataset, org.eclipse.rdf4j.query.BindingSet bindings)

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, meetBinaryTupleOperator, meetBinaryValueOperator, meetCompareSubQueryValueOperator, meetNAryValueOperator, meetNode, meetOther, meetSubQueryValueOperator, meetUnaryValueOperator, meetUpdateExpr

Methods inherited from class java.lang.Object

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

Constructor Detail

QueryModelNormalizer

public QueryModelNormalizer()

Method Detail

optimize

public void optimize(org.eclipse.rdf4j.query.algebra.TupleExpr tupleExpr,
                     org.eclipse.rdf4j.query.Dataset dataset,
                     org.eclipse.rdf4j.query.BindingSet bindings)

Specified by:

optimize in interface QueryOptimizer

meet

public void meet(org.eclipse.rdf4j.query.algebra.Join join)

Specified by:

meet in interface org.eclipse.rdf4j.query.algebra.QueryModelVisitor<RuntimeException>

Overrides:

meet in class org.eclipse.rdf4j.query.algebra.helpers.AbstractQueryModelVisitor<RuntimeException>

meet

public void meet(org.eclipse.rdf4j.query.algebra.LeftJoin leftJoin)

Specified by:

meet in interface org.eclipse.rdf4j.query.algebra.QueryModelVisitor<RuntimeException>

Overrides:

meet in class org.eclipse.rdf4j.query.algebra.helpers.AbstractQueryModelVisitor<RuntimeException>

meet

public void meet(org.eclipse.rdf4j.query.algebra.Union union)

Specified by:

meet in interface org.eclipse.rdf4j.query.algebra.QueryModelVisitor<RuntimeException>

Overrides:

meet in class org.eclipse.rdf4j.query.algebra.helpers.AbstractQueryModelVisitor<RuntimeException>

meet

public void meet(org.eclipse.rdf4j.query.algebra.Difference difference)

Specified by:

meet in interface org.eclipse.rdf4j.query.algebra.QueryModelVisitor<RuntimeException>

Overrides:

meet in class org.eclipse.rdf4j.query.algebra.helpers.AbstractQueryModelVisitor<RuntimeException>

meet

public void meet(org.eclipse.rdf4j.query.algebra.Intersection intersection)

Specified by:

meet in interface org.eclipse.rdf4j.query.algebra.QueryModelVisitor<RuntimeException>

Overrides:

meet in class org.eclipse.rdf4j.query.algebra.helpers.AbstractQueryModelVisitor<RuntimeException>

meetUnaryTupleOperator

protected void meetUnaryTupleOperator(org.eclipse.rdf4j.query.algebra.UnaryTupleOperator node)

Overrides:

meetUnaryTupleOperator in class org.eclipse.rdf4j.query.algebra.helpers.AbstractQueryModelVisitor<RuntimeException>

meet

public void meet(org.eclipse.rdf4j.query.algebra.Filter node)

Specified by:

meet in interface org.eclipse.rdf4j.query.algebra.QueryModelVisitor<RuntimeException>

Overrides:

meet in class org.eclipse.rdf4j.query.algebra.helpers.AbstractQueryModelVisitor<RuntimeException>

meet

public void meet(org.eclipse.rdf4j.query.algebra.Or or)

Specified by:

meet in interface org.eclipse.rdf4j.query.algebra.QueryModelVisitor<RuntimeException>

Overrides:

meet in class org.eclipse.rdf4j.query.algebra.helpers.AbstractQueryModelVisitor<RuntimeException>

meet

public void meet(org.eclipse.rdf4j.query.algebra.And and)

Specified by:

meet in interface org.eclipse.rdf4j.query.algebra.QueryModelVisitor<RuntimeException>

Overrides:

meet in class org.eclipse.rdf4j.query.algebra.helpers.AbstractQueryModelVisitor<RuntimeException>