Class StopRemainingExecutionsOnCloseIteration

java.lang.Object

org.eclipse.rdf4j.common.iteration.AbstractCloseableIteration<BindingSet>

org.eclipse.rdf4j.federated.evaluation.iterator.StopRemainingExecutionsOnCloseIteration

All Implemented Interfaces:

AutoCloseable, Iterator<BindingSet>, CloseableIteration<BindingSet>

public class StopRemainingExecutionsOnCloseIteration
extends AbstractCloseableIteration<BindingSet>

A wrapping iteration that attempts to close all running scheduled Futures for the given query evaluation.

This is required for instance if the resulting iteration is not fully consumed.

Author:

Andreas Schwarte

See Also:

• QueryInfo.close()
• ParallelTask.cancel()

Field Summary

Fields

Modifier and Type	Field	Description
protected final CloseableIteration<? extends BindingSet>	inner
protected final QueryInfo	queryInfo

Fields inherited from interface CloseableIteration

EMPTY_STATEMENT_ITERATION

Constructor Summary

Constructors

Constructor	Description
StopRemainingExecutionsOnCloseIteration(CloseableIteration<? extends BindingSet> inner, QueryInfo queryInfo)

Method Summary

Modifier and Type	Method	Description
protected void	handleClose()	Called by AbstractCloseableIteration.close() when it is called for the first time.
boolean	hasNext()
BindingSet	next()
void	remove()

Methods inherited from class AbstractCloseableIteration

close, isClosed

Methods inherited from class Object

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

Methods inherited from interface CloseableIteration

stream

Methods inherited from interface Iterator

forEachRemaining

Field Details

inner

protected final CloseableIteration<? extends BindingSet> inner

queryInfo

protected final QueryInfo queryInfo

Constructor Details

StopRemainingExecutionsOnCloseIteration

public StopRemainingExecutionsOnCloseIteration(CloseableIteration<? extends BindingSet> inner,
 QueryInfo queryInfo)

Method Details

hasNext

public boolean hasNext()
                throws QueryEvaluationException

Throws:

QueryEvaluationException

next

public BindingSet next()
                throws QueryEvaluationException

Throws:

QueryEvaluationException

remove

public void remove()
            throws QueryEvaluationException

Throws:

QueryEvaluationException

handleClose

protected void handleClose()
                    throws QueryEvaluationException

Description copied from class: AbstractCloseableIteration

Called by AbstractCloseableIteration.close() when it is called for the first time. This method is only called once on each iteration. By default, this method does nothing.

Specified by:

handleClose in class AbstractCloseableIteration<BindingSet>

Throws:

QueryEvaluationException