info.aduna.iterator

Class UnionIterator<E>

java.lang.Object

info.aduna.iterator.CloseableIteratorBase<E>

info.aduna.iterator.LookAheadIterator<E>

info.aduna.iterator.UnionIterator<E>

All Implemented Interfaces:

Closeable, AutoCloseable, Iterator<E>

public class UnionIterator<E>
extends LookAheadIterator<E>

Author:

MJAHale

Constructor Summary

Constructors

Constructor and Description
UnionIterator(Iterable<? extends E>... args) Creates a new UnionIterator that returns the bag union of the results of a number of Iterators.
UnionIterator(Iterable<? extends Iterable<? extends E>> args)

Method Summary

Modifier and Type	Method and Description
protected E	getNextElement() Gets the next element.
protected void	handleClose() Called by CloseableIteratorBase.close() when it is called for the first time.

Methods inherited from class info.aduna.iterator.LookAheadIterator

handleAlreadyClosed, hasNext, next, remove

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

UnionIterator

public UnionIterator(Iterable<? extends E>... args)

Creates a new UnionIterator that returns the bag union of the results of a number of Iterators.

Parameters:

args - The Iterators containing the elements to iterate over.

UnionIterator

public UnionIterator(Iterable<? extends Iterable<? extends E>> args)

Method Detail

getNextElement

protected E getNextElement()

Description copied from class: LookAheadIterator

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

Specified by:

getNextElement in class LookAheadIterator<E>

Returns:

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

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 LookAheadIterator<E>

Throws:

IOException