Class DefaultEvaluationStrategy.TimedIterator

java.lang.Object

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

org.eclipse.rdf4j.common.iteration.IterationWrapper<BindingSet, QueryEvaluationException>

org.eclipse.rdf4j.query.algebra.evaluation.impl.DefaultEvaluationStrategy.TimedIterator

All Implemented Interfaces:

AutoCloseable, CloseableIteration<BindingSet, QueryEvaluationException>, Iteration<BindingSet, QueryEvaluationException>

Enclosing class:

DefaultEvaluationStrategy

private static class DefaultEvaluationStrategy.TimedIterator
extends IterationWrapper<BindingSet, QueryEvaluationException>

This class wraps an iterator and tracks the time used to execute next() and hasNext()

Field Summary

Fields

Modifier and Type	Field	Description
(package private) CloseableIteration<BindingSet, QueryEvaluationException>	iterator
(package private) QueryModelNode	queryModelNode
(package private) com.google.common.base.Stopwatch	stopwatch

Fields inherited from class IterationWrapper

wrappedIter

Constructor Summary

Constructors

Constructor	Description
TimedIterator(CloseableIteration<BindingSet, QueryEvaluationException> iterator, QueryModelNode queryModelNode)

Method Summary

Modifier and Type	Method	Description
protected void	handleClose()	Closes this Iteration and also closes the wrapped Iteration if it is a CloseableIteration.
boolean	hasNext()	Checks whether the wrapped Iteration contains more elements, closing this Iteration when this is not the case.
BindingSet	next()	Returns the next element from the wrapped Iteration.

Methods inherited from class IterationWrapper

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

Field Details

iterator

CloseableIteration<BindingSet, QueryEvaluationException> iterator

queryModelNode

QueryModelNode queryModelNode

stopwatch

com.google.common.base.Stopwatch stopwatch

Constructor Details

TimedIterator

public TimedIterator(CloseableIteration<BindingSet, QueryEvaluationException> iterator,
 QueryModelNode queryModelNode)

Method Details

next

public BindingSet next()
                throws QueryEvaluationException

Description copied from class: IterationWrapper

Returns the next element from the wrapped Iteration.

Specified by:

next in interface Iteration<BindingSet, QueryEvaluationException>

Overrides:

next in class IterationWrapper<BindingSet, QueryEvaluationException>

Returns:

the next element in the iteration.

Throws:

QueryEvaluationException

hasNext

public boolean hasNext()
                throws QueryEvaluationException

Description copied from class: IterationWrapper

Checks whether the wrapped Iteration contains more elements, closing this Iteration when this is not the case.

Specified by:

hasNext in interface Iteration<BindingSet, QueryEvaluationException>

Overrides:

hasNext in class IterationWrapper<BindingSet, QueryEvaluationException>

Returns:

true if the wrapped Iteration contains more elements, false otherwise.

Throws:

QueryEvaluationException

handleClose

protected void handleClose()
                    throws QueryEvaluationException

Description copied from class: IterationWrapper

Closes this Iteration and also closes the wrapped Iteration if it is a CloseableIteration.

Overrides:

handleClose in class IterationWrapper<BindingSet, QueryEvaluationException>

Throws:

QueryEvaluationException