org.openrdf.sail.federation.evaluation

Class FederationStrategy

java.lang.Object

org.openrdf.query.algebra.evaluation.impl.EvaluationStrategyImpl

org.openrdf.sail.federation.evaluation.FederationStrategy

All Implemented Interfaces:

EvaluationStrategy

public class FederationStrategy
extends EvaluationStrategyImpl

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.openrdf.query.algebra.evaluation.impl.EvaluationStrategyImpl

dataset, tripleSource

Constructor Summary

Constructors

Constructor and Description
FederationStrategy(Executor executor, TripleSource tripleSource, Dataset dataset)

Method Summary

Methods

Modifier and Type	Method and Description
CloseableIteration<BindingSet,QueryEvaluationException>	evaluate(Join join, BindingSet bindings)
CloseableIteration<BindingSet,QueryEvaluationException>	evaluate(LeftJoin leftJoin, BindingSet bindings)
CloseableIteration<BindingSet,QueryEvaluationException>	evaluate(NaryJoin join, BindingSet bindings)
CloseableIteration<BindingSet,QueryEvaluationException>	evaluate(TupleExpr expr, BindingSet bindings)
CloseableIteration<BindingSet,QueryEvaluationException>	evaluate(Union union, BindingSet bindings)

Methods inherited from class org.openrdf.query.algebra.evaluation.impl.EvaluationStrategyImpl

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, getVarValue, getZeroLengthPathIterator, isReducedOrDistinct, isTrue

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,
                  Dataset dataset)

Method Detail

evaluate

public CloseableIteration<BindingSet,QueryEvaluationException> evaluate(TupleExpr expr,
                                                               BindingSet bindings)
                                                                 throws QueryEvaluationException

Specified by:

evaluate in interface EvaluationStrategy

Overrides:

evaluate in class EvaluationStrategyImpl

Throws:

QueryEvaluationException

evaluate

public CloseableIteration<BindingSet,QueryEvaluationException> evaluate(Join join,
                                                               BindingSet bindings)
                                                                 throws QueryEvaluationException

Overrides:

evaluate in class EvaluationStrategyImpl

Throws:

QueryEvaluationException

evaluate

public CloseableIteration<BindingSet,QueryEvaluationException> evaluate(NaryJoin join,
                                                               BindingSet bindings)
                                                                 throws QueryEvaluationException

Throws:

QueryEvaluationException

evaluate

public CloseableIteration<BindingSet,QueryEvaluationException> evaluate(LeftJoin leftJoin,
                                                               BindingSet bindings)
                                                                 throws QueryEvaluationException

Overrides:

evaluate in class EvaluationStrategyImpl

Throws:

QueryEvaluationException

evaluate

public CloseableIteration<BindingSet,QueryEvaluationException> evaluate(Union union,
                                                               BindingSet bindings)
                                                                 throws QueryEvaluationException

Overrides:

evaluate in class EvaluationStrategyImpl

Throws:

QueryEvaluationException