org.eclipse.rdf4j.sail.federation.evaluation

Class ParallelJoinCursor

java.lang.Object

org.eclipse.rdf4j.common.iteration.AbstractCloseableIteration<E,X>

org.eclipse.rdf4j.common.iteration.LookAheadIteration<org.eclipse.rdf4j.query.BindingSet,org.eclipse.rdf4j.query.QueryEvaluationException>

org.eclipse.rdf4j.sail.federation.evaluation.ParallelJoinCursor

All Implemented Interfaces:

AutoCloseable, Runnable, org.eclipse.rdf4j.common.iteration.CloseableIteration<org.eclipse.rdf4j.query.BindingSet,org.eclipse.rdf4j.query.QueryEvaluationException>, org.eclipse.rdf4j.common.iteration.Iteration<org.eclipse.rdf4j.query.BindingSet,org.eclipse.rdf4j.query.QueryEvaluationException>

public class ParallelJoinCursor
extends org.eclipse.rdf4j.common.iteration.LookAheadIteration<org.eclipse.rdf4j.query.BindingSet,org.eclipse.rdf4j.query.QueryEvaluationException>
implements Runnable

Iterate the left side and evaluate the right side in separate thread, only iterate the right side in the controlling thread.

Author:

James Leigh

Constructor Summary

Constructors

Constructor and Description
ParallelJoinCursor(EvaluationStrategy strategy, org.eclipse.rdf4j.common.iteration.CloseableIteration<org.eclipse.rdf4j.query.BindingSet,org.eclipse.rdf4j.query.QueryEvaluationException> leftIter, org.eclipse.rdf4j.query.algebra.TupleExpr rightArg)

Method Summary

Modifier and Type	Method and Description
org.eclipse.rdf4j.query.BindingSet	getNextElement()
void	handleClose()
void	run()
String	toString()

Methods inherited from class org.eclipse.rdf4j.common.iteration.LookAheadIteration

hasNext, next, remove

Methods inherited from class org.eclipse.rdf4j.common.iteration.AbstractCloseableIteration

close, isClosed

Methods inherited from class java.lang.Object

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

Constructor Detail

ParallelJoinCursor

public ParallelJoinCursor(EvaluationStrategy strategy,
                          org.eclipse.rdf4j.common.iteration.CloseableIteration<org.eclipse.rdf4j.query.BindingSet,org.eclipse.rdf4j.query.QueryEvaluationException> leftIter,
                          org.eclipse.rdf4j.query.algebra.TupleExpr rightArg)
                   throws org.eclipse.rdf4j.query.QueryEvaluationException

Throws:

org.eclipse.rdf4j.query.QueryEvaluationException

Method Detail

run

public void run()

Specified by:

run in interface Runnable

getNextElement

public org.eclipse.rdf4j.query.BindingSet getNextElement()
                                                  throws org.eclipse.rdf4j.query.QueryEvaluationException

Specified by:

getNextElement in class org.eclipse.rdf4j.common.iteration.LookAheadIteration<org.eclipse.rdf4j.query.BindingSet,org.eclipse.rdf4j.query.QueryEvaluationException>

Throws:

org.eclipse.rdf4j.query.QueryEvaluationException

handleClose

public void handleClose()
                 throws org.eclipse.rdf4j.query.QueryEvaluationException

Overrides:

handleClose in class org.eclipse.rdf4j.common.iteration.LookAheadIteration<org.eclipse.rdf4j.query.BindingSet,org.eclipse.rdf4j.query.QueryEvaluationException>

Throws:

org.eclipse.rdf4j.query.QueryEvaluationException

toString

public String toString()

Overrides:

toString in class Object