Class QueryModelNormalizerOptimizer

java.lang.Object

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

org.eclipse.rdf4j.query.algebra.evaluation.optimizer.QueryModelNormalizerOptimizer

All Implemented Interfaces:

QueryOptimizer, QueryModelVisitor<RuntimeException>

public class QueryModelNormalizerOptimizer
extends AbstractSimpleQueryModelVisitor<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	Description
QueryModelNormalizerOptimizer()

Method Summary

Modifier and Type	Method	Description
void	meet(And and)
void	meet(Difference difference)
void	meet(Filter node)
void	meet(Intersection intersection)
void	meet(Join join)
void	meet(LeftJoin leftJoin)
void	meet(Or or)
void	meet(Union union)
protected void	meetUnaryTupleOperator(UnaryTupleOperator node)	Method called by all meet methods with a UnaryTupleOperator node as argument.
void	optimize(TupleExpr tupleExpr, Dataset dataset, BindingSet bindings)

Methods inherited from class AbstractSimpleQueryModelVisitor

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

Modifier and Type	Method	Description
void	meet(Add node)
void	meet(AggregateFunctionCall node)
void	meet(ArbitraryLengthPath node)
void	meet(Avg node)
void	meet(BindingSetAssignment node)
void	meet(BNodeGenerator node)
void	meet(Bound node)
void	meet(Clear node)
void	meet(Coalesce node)
void	meet(Compare node)
void	meet(CompareAll node)
void	meet(CompareAny node)
void	meet(Copy node)
void	meet(Count node)
void	meet(Create node)
void	meet(Datatype node)
void	meet(DeleteData node)
void	meet(DescribeOperator node)
void	meet(Distinct node)
void	meet(EmptySet node)
void	meet(Exists node)
void	meet(Extension node)
void	meet(ExtensionElem node)
void	meet(FunctionCall node)
void	meet(Group node)
void	meet(GroupConcat node)
void	meet(GroupElem node)
void	meet(If node)
void	meet(In node)
void	meet(InsertData node)
void	meet(IRIFunction node)
void	meet(IsBNode node)
void	meet(IsLiteral node)
void	meet(IsNumeric node)
void	meet(IsResource node)
void	meet(IsURI node)
void	meet(Label node)
void	meet(Lang node)
void	meet(LangMatches node)
void	meet(ListMemberOperator node)
void	meet(Load node)
void	meet(LocalName node)
void	meet(MathExpr node)
void	meet(Max node)
void	meet(Min node)
void	meet(Modify node)
void	meet(Move node)
void	meet(MultiProjection node)
void	meet(Namespace node)
void	meet(Not node)
void	meet(Order node)
void	meet(OrderElem node)
void	meet(Projection node)
void	meet(ProjectionElem node)
void	meet(ProjectionElemList node)
void	meet(QueryRoot node)
void	meet(Reduced node)
void	meet(Regex node)
void	meet(SameTerm node)
void	meet(Sample node)
void	meet(Service node)
void	meet(SingletonSet node)
void	meet(Slice node)
void	meet(StatementPattern node)
void	meet(Str node)
void	meet(Sum node)
void	meet(TripleRef node)
void	meet(ValueConstant node)
void	meet(ValueExprTripleRef node)
void	meet(Var node)
void	meet(ZeroLengthPath node)
protected void	meetBinaryTupleOperator(BinaryTupleOperator node)	Method called by all meet methods with a BinaryTupleOperator node as argument.
protected void	meetBinaryValueOperator(BinaryValueOperator node)	Method called by all meet methods with a BinaryValueOperator node as argument.
protected void	meetCompareSubQueryValueOperator(CompareSubQueryValueOperator node)	Method called by all meet methods with a CompareSubQueryValueOperator node as argument.
protected void	meetNAryValueOperator(NAryValueOperator node)	Method called by all meet methods with a NAryValueOperator node as argument.
void	meetOther(QueryModelNode node)
protected void	meetSubQueryValueOperator(SubQueryValueOperator node)	Method called by all meet methods with a SubQueryValueOperator node as argument.
protected void	meetUnaryValueOperator(UnaryValueOperator node)	Method called by all meet methods with a UnaryValueOperator node as argument.
void	meetUnsupported(QueryModelNode node)
protected void	meetUpdateExpr(UpdateExpr node)	Method called by all meet methods with a UpdateExpr node as argument.

Methods inherited from class Object

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

Constructor Details

QueryModelNormalizerOptimizer

public QueryModelNormalizerOptimizer()

Method Details

optimize

public void optimize(TupleExpr tupleExpr,
 Dataset dataset,
 BindingSet bindings)

Specified by:

optimize in interface QueryOptimizer

meet

public void meet(Join join)

Specified by:

meet in interface QueryModelVisitor<RuntimeException>

Overrides:

meet in class AbstractSimpleQueryModelVisitor<RuntimeException>

meet

public void meet(LeftJoin leftJoin)

Specified by:

meet in interface QueryModelVisitor<RuntimeException>

Overrides:

meet in class AbstractSimpleQueryModelVisitor<RuntimeException>

meet

public void meet(Union union)

Specified by:

meet in interface QueryModelVisitor<RuntimeException>

Overrides:

meet in class AbstractSimpleQueryModelVisitor<RuntimeException>

meet

public void meet(Difference difference)

Specified by:

meet in interface QueryModelVisitor<RuntimeException>

Overrides:

meet in class AbstractSimpleQueryModelVisitor<RuntimeException>

meet

public void meet(Intersection intersection)

Specified by:

meet in interface QueryModelVisitor<RuntimeException>

Overrides:

meet in class AbstractSimpleQueryModelVisitor<RuntimeException>

meetUnaryTupleOperator

protected void meetUnaryTupleOperator(UnaryTupleOperator node)

Description copied from class: AbstractSimpleQueryModelVisitor

Method called by all meet methods with a UnaryTupleOperator node as argument.

Overrides:

meetUnaryTupleOperator in class AbstractSimpleQueryModelVisitor<RuntimeException>

Parameters:

node - The node that is being visited.

meet

public void meet(Filter node)

Specified by:

meet in interface QueryModelVisitor<RuntimeException>

Overrides:

meet in class AbstractSimpleQueryModelVisitor<RuntimeException>

meet

public void meet(Or or)

Specified by:

meet in interface QueryModelVisitor<RuntimeException>

Overrides:

meet in class AbstractSimpleQueryModelVisitor<RuntimeException>

meet

public void meet(And and)

Specified by:

meet in interface QueryModelVisitor<RuntimeException>

Overrides:

meet in class AbstractSimpleQueryModelVisitor<RuntimeException>