Package org.eclipse.rdf4j.common.concurrent.locks

Class LockingIteration<E,X extends Exception>

java.lang.Object

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

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

org.eclipse.rdf4j.common.concurrent.locks.LockingIteration<E,X>

All Implemented Interfaces:

AutoCloseable, CloseableIteration<E,X>, Iteration<E,X>

public class LockingIteration<E,X extends Exception>
extends IterationWrapper<E,X>

An Iteration that holds on to a lock until the Iteration is closed. Upon closing, the underlying Iteration is closed before the lock is released. This iterator closes itself as soon as all elements have been read.

Field Summary

Fields inherited from class org.eclipse.rdf4j.common.iteration.IterationWrapper

wrappedIter

Constructor Summary

Constructors

Constructor	Description
LockingIteration(Lock lock, Iteration<? extends E,X> iter)	Creates a new LockingIteration.

Method Summary

Modifier and Type	Method	Description
static <T, R extends Exception> CloseableIteration<T,R>	getInstance(Lock lock, CloseableIteration<T,R> iter)
protected void	handleClose()	Closes this Iteration and also closes the wrapped Iteration if it is a CloseableIteration.

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

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, toString, wait, wait, wait

Methods inherited from interface org.eclipse.rdf4j.common.iteration.Iteration

stream

Constructor Details

LockingIteration

public LockingIteration(Lock lock,
 Iteration<? extends E,X> iter)

Creates a new LockingIteration.

Parameters:

lock - The lock to release when the itererator is closed, must not be null.

iter - The underlying Iteration, must not be null.

Method Details

getInstance

public static <T,
R extends Exception>
CloseableIteration<T,R> getInstance(Lock lock,
 CloseableIteration<T,R> iter)

handleClose

protected void handleClose()
                    throws X

Description copied from class: IterationWrapper

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

Overrides:

handleClose in class IterationWrapper<E,X extends Exception>

Throws:

X