info.aduna.iterator

Class LookAheadIterator<E>

java.lang.Object

info.aduna.iterator.CloseableIteratorBase<E>

info.aduna.iterator.LookAheadIterator<E>

All Implemented Interfaces:

Closeable, AutoCloseable, Iterator<E>

Direct Known Subclasses:

UnionIterator

public abstract class LookAheadIterator<E>
extends CloseableIteratorBase<E>

Author:

MJAHale

Constructor Summary

Constructors

Constructor and Description
LookAheadIterator()

Method Summary

Modifier and Type	Method and Description
protected abstract E	getNextElement() Gets the next element.
protected void	handleAlreadyClosed()
protected void	handleClose() Called by CloseableIteratorBase.close() when it is called for the first time.
boolean	hasNext()
E	next()
void	remove() Throws an UnsupportedOperationException.

Methods inherited from class info.aduna.iterator.CloseableIteratorBase

close, isClosed

Methods inherited from class java.lang.Object

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

Methods inherited from interface java.util.Iterator

forEachRemaining

Constructor Detail

LookAheadIterator

public LookAheadIterator()

Method Detail

getNextElement

protected abstract E getNextElement()

Gets the next element. Subclasses should implement this method so that it returns the next element.

Returns:

The next element, or null if no more elements are available.

hasNext

public final boolean hasNext()

next

public final E next()

remove

public void remove()

Throws an UnsupportedOperationException.

handleClose

protected void handleClose()
                    throws IOException

Description copied from class: CloseableIteratorBase

Called by CloseableIteratorBase.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 CloseableIteratorBase<E>

Throws:

IOException

handleAlreadyClosed

protected void handleAlreadyClosed()
                            throws IOException

Overrides:

handleAlreadyClosed in class CloseableIteratorBase<E>

Throws:

IOException