org.eclipse.rdf4j.sail.federation.evaluation

Class FederationStrategy

java.lang.Object

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

org.eclipse.rdf4j.sail.federation.evaluation.FederationStrategy

All Implemented Interfaces:

EvaluationStrategy, FederatedServiceResolver, FederatedServiceResolverClient, org.eclipse.rdf4j.util.UUIDable

public class FederationStrategy
extends StrictEvaluationStrategy

Evaluates Join, LeftJoin and Union in parallel and only evaluate if OwnedTupleExpr is the given member.

Author:

James Leigh

See Also:

ParallelJoinCursor, ParallelLeftJoinCursor

Field Summary

Fields inherited from class org.eclipse.rdf4j.query.algebra.evaluation.impl.StrictEvaluationStrategy

dataset, serviceResolver, tripleSource

Constructor Summary

Constructors

Constructor and Description
FederationStrategy(Executor executor, TripleSource tripleSource, org.eclipse.rdf4j.query.Dataset dataset, FederatedServiceResolver serviceManager)

Method Summary

Modifier and Type	Method and Description
org.eclipse.rdf4j.common.iteration.CloseableIteration<org.eclipse.rdf4j.query.BindingSet,org.eclipse.rdf4j.query.QueryEvaluationException>	evaluate(org.eclipse.rdf4j.query.algebra.Join join, org.eclipse.rdf4j.query.BindingSet bindings)
org.eclipse.rdf4j.common.iteration.CloseableIteration<org.eclipse.rdf4j.query.BindingSet,org.eclipse.rdf4j.query.QueryEvaluationException>	evaluate(org.eclipse.rdf4j.query.algebra.LeftJoin leftJoin, org.eclipse.rdf4j.query.BindingSet bindings)
org.eclipse.rdf4j.common.iteration.CloseableIteration<org.eclipse.rdf4j.query.BindingSet,org.eclipse.rdf4j.query.QueryEvaluationException>	evaluate(NaryJoin join, org.eclipse.rdf4j.query.BindingSet bindings)
org.eclipse.rdf4j.common.iteration.CloseableIteration<org.eclipse.rdf4j.query.BindingSet,org.eclipse.rdf4j.query.QueryEvaluationException>	evaluate(org.eclipse.rdf4j.query.algebra.TupleExpr expr, org.eclipse.rdf4j.query.BindingSet bindings)
org.eclipse.rdf4j.common.iteration.CloseableIteration<org.eclipse.rdf4j.query.BindingSet,org.eclipse.rdf4j.query.QueryEvaluationException>	evaluate(org.eclipse.rdf4j.query.algebra.Union union, org.eclipse.rdf4j.query.BindingSet bindings)

Methods inherited from class org.eclipse.rdf4j.query.algebra.evaluation.impl.StrictEvaluationStrategy

evaluate, evaluate, evaluate, evaluate, evaluate, evaluate, evaluate, evaluate, evaluate, evaluate, evaluate, evaluate, evaluate, evaluate, evaluate, evaluate, evaluate, evaluate, evaluate, evaluate, evaluate, evaluate, evaluate, evaluate, evaluate, evaluate, evaluate, evaluate, evaluate, evaluate, evaluate, evaluate, evaluate, evaluate, evaluate, evaluate, evaluate, evaluate, evaluate, evaluate, evaluate, evaluate, evaluate, evaluate, evaluate, evaluate, evaluate, evaluate, evaluate, evaluate, evaluate, evaluate, evaluate, evaluate, evaluate, evaluate, evaluate, evaluate, getLimit, getService, getUUID, getVarValue, getZeroLengthPathIterator, isReducedOrDistinct, isTrue, isUnbound, setFederatedServiceResolver

Methods inherited from class java.lang.Object

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

Constructor Detail

FederationStrategy

public FederationStrategy(Executor executor,
                          TripleSource tripleSource,
                          org.eclipse.rdf4j.query.Dataset dataset,
                          FederatedServiceResolver serviceManager)

Method Detail

evaluate

public org.eclipse.rdf4j.common.iteration.CloseableIteration<org.eclipse.rdf4j.query.BindingSet,org.eclipse.rdf4j.query.QueryEvaluationException> evaluate(org.eclipse.rdf4j.query.algebra.TupleExpr expr,
                                                                                                                                                           org.eclipse.rdf4j.query.BindingSet bindings)
                                                                                                                                                    throws org.eclipse.rdf4j.query.QueryEvaluationException

Specified by:

evaluate in interface EvaluationStrategy

Overrides:

evaluate in class StrictEvaluationStrategy

Throws:

org.eclipse.rdf4j.query.QueryEvaluationException

evaluate

public org.eclipse.rdf4j.common.iteration.CloseableIteration<org.eclipse.rdf4j.query.BindingSet,org.eclipse.rdf4j.query.QueryEvaluationException> evaluate(org.eclipse.rdf4j.query.algebra.Join join,
                                                                                                                                                           org.eclipse.rdf4j.query.BindingSet bindings)
                                                                                                                                                    throws org.eclipse.rdf4j.query.QueryEvaluationException

Overrides:

evaluate in class StrictEvaluationStrategy

Throws:

org.eclipse.rdf4j.query.QueryEvaluationException

evaluate

public org.eclipse.rdf4j.common.iteration.CloseableIteration<org.eclipse.rdf4j.query.BindingSet,org.eclipse.rdf4j.query.QueryEvaluationException> evaluate(NaryJoin join,
                                                                                                                                                           org.eclipse.rdf4j.query.BindingSet bindings)
                                                                                                                                                    throws org.eclipse.rdf4j.query.QueryEvaluationException

Throws:

org.eclipse.rdf4j.query.QueryEvaluationException

evaluate

public org.eclipse.rdf4j.common.iteration.CloseableIteration<org.eclipse.rdf4j.query.BindingSet,org.eclipse.rdf4j.query.QueryEvaluationException> evaluate(org.eclipse.rdf4j.query.algebra.LeftJoin leftJoin,
                                                                                                                                                           org.eclipse.rdf4j.query.BindingSet bindings)
                                                                                                                                                    throws org.eclipse.rdf4j.query.QueryEvaluationException

Overrides:

evaluate in class StrictEvaluationStrategy

Throws:

org.eclipse.rdf4j.query.QueryEvaluationException

evaluate

public org.eclipse.rdf4j.common.iteration.CloseableIteration<org.eclipse.rdf4j.query.BindingSet,org.eclipse.rdf4j.query.QueryEvaluationException> evaluate(org.eclipse.rdf4j.query.algebra.Union union,
                                                                                                                                                           org.eclipse.rdf4j.query.BindingSet bindings)
                                                                                                                                                    throws org.eclipse.rdf4j.query.QueryEvaluationException

Overrides:

evaluate in class StrictEvaluationStrategy

Throws:

org.eclipse.rdf4j.query.QueryEvaluationException