org.eclipse.rdf4j.sail.federation.optimizers

Class FederationJoinOptimizer

java.lang.Object

org.eclipse.rdf4j.query.algebra.helpers.AbstractQueryModelVisitor<org.eclipse.rdf4j.repository.RepositoryException>

org.eclipse.rdf4j.sail.federation.optimizers.FederationJoinOptimizer

All Implemented Interfaces:

QueryOptimizer, org.eclipse.rdf4j.query.algebra.QueryModelVisitor<org.eclipse.rdf4j.repository.RepositoryException>

public class FederationJoinOptimizer
extends org.eclipse.rdf4j.query.algebra.helpers.AbstractQueryModelVisitor<org.eclipse.rdf4j.repository.RepositoryException>
implements QueryOptimizer

Search for Join, LeftJoin, and Union arguments that can be evaluated in a single member.

Author:

James Leigh

Constructor Summary

Constructors

Constructor and Description
FederationJoinOptimizer(Collection<? extends org.eclipse.rdf4j.repository.RepositoryConnection> members, boolean distinct, PrefixHashSet localSpace)
FederationJoinOptimizer(Collection<? extends org.eclipse.rdf4j.repository.RepositoryConnection> members, boolean distinct, PrefixHashSet localSpace, java.util.function.Function<? super org.eclipse.rdf4j.repository.Repository,? extends org.eclipse.rdf4j.repository.filters.RepositoryBloomFilter> bloomFilters)

Method Summary

Modifier and Type	Method and Description
void	meet(org.eclipse.rdf4j.query.algebra.LeftJoin node)
void	meet(org.eclipse.rdf4j.query.algebra.Union node)
void	meetMultiJoin(NaryJoin node)
void	meetOther(org.eclipse.rdf4j.query.algebra.QueryModelNode node)
protected void	meetUnaryTupleOperator(org.eclipse.rdf4j.query.algebra.UnaryTupleOperator node)
void	optimize(org.eclipse.rdf4j.query.algebra.TupleExpr query, 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, meet, meet, meet, meet, meet, meet, meetBinaryTupleOperator, meetBinaryValueOperator, meetCompareSubQueryValueOperator, meetNAryValueOperator, meetNode, meetSubQueryValueOperator, meetUnaryValueOperator, meetUpdateExpr

Methods inherited from class java.lang.Object

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

Constructor Detail

FederationJoinOptimizer

public FederationJoinOptimizer(Collection<? extends org.eclipse.rdf4j.repository.RepositoryConnection> members,
                               boolean distinct,
                               PrefixHashSet localSpace)

FederationJoinOptimizer

public FederationJoinOptimizer(Collection<? extends org.eclipse.rdf4j.repository.RepositoryConnection> members,
                               boolean distinct,
                               PrefixHashSet localSpace,
                               java.util.function.Function<? super org.eclipse.rdf4j.repository.Repository,? extends org.eclipse.rdf4j.repository.filters.RepositoryBloomFilter> bloomFilters)

Method Detail

optimize

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

Specified by:

optimize in interface QueryOptimizer

meetOther

public void meetOther(org.eclipse.rdf4j.query.algebra.QueryModelNode node)
               throws org.eclipse.rdf4j.repository.RepositoryException

Specified by:

meetOther in interface org.eclipse.rdf4j.query.algebra.QueryModelVisitor<org.eclipse.rdf4j.repository.RepositoryException>

Overrides:

meetOther in class org.eclipse.rdf4j.query.algebra.helpers.AbstractQueryModelVisitor<org.eclipse.rdf4j.repository.RepositoryException>

Throws:

org.eclipse.rdf4j.repository.RepositoryException

meetMultiJoin

public void meetMultiJoin(NaryJoin node)
                   throws org.eclipse.rdf4j.repository.RepositoryException

Throws:

org.eclipse.rdf4j.repository.RepositoryException

meet

public void meet(org.eclipse.rdf4j.query.algebra.LeftJoin node)
          throws org.eclipse.rdf4j.repository.RepositoryException

Specified by:

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

Overrides:

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

Throws:

org.eclipse.rdf4j.repository.RepositoryException

meet

public void meet(org.eclipse.rdf4j.query.algebra.Union node)
          throws org.eclipse.rdf4j.repository.RepositoryException

Specified by:

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

Overrides:

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

Throws:

org.eclipse.rdf4j.repository.RepositoryException

meetUnaryTupleOperator

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

Overrides:

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

Throws:

org.eclipse.rdf4j.repository.RepositoryException