org.eclipse.rdf4j.common.iteration

Class SingletonIteration<E,X extends Exception>

java.lang.Object

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

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

All Implemented Interfaces:

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

public class SingletonIteration<E,X extends Exception>
extends AbstractCloseableIteration<E,X>

An Iteration that contains exactly one element.

Constructor Summary

Constructors

Constructor and Description
SingletonIteration(E value) Creates a new EmptyIteration.

Method Summary

Modifier and Type	Method and Description
protected void	handleClose() Called by AbstractCloseableIteration.close() when it is called for the first time.
boolean	hasNext() Returns true if the iteration has more elements.
E	next() Returns the next element in the iteration.
void	remove() Removes from the underlying collection the last element returned by the iteration (optional operation).

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 Detail

SingletonIteration

public SingletonIteration(E value)

Creates a new EmptyIteration.

Method Detail

hasNext

public boolean hasNext()

Description copied from interface: Iteration

Returns true if the iteration has more elements. (In other words, returns true if Iteration.next() would return an element rather than throwing a NoSuchElementException.)

Returns:

true if the iteration has more elements.

next

public E next()
       throws X extends Exception

Description copied from interface: Iteration

Returns the next element in the iteration.

Returns:

the next element in the iteration.

Throws:

X extends Exception

remove

public void remove()

Description copied from interface: Iteration

Removes from the underlying collection the last element returned by the iteration (optional operation). This method can be called only once per call to next.

handleClose

protected void handleClose()
                    throws X extends Exception

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.

Overrides:

handleClose in class AbstractCloseableIteration<E,X extends Exception>

Throws:

X

X extends Exception