ch.cern.dirq

Class QueueIterator

java.lang.Object

ch.cern.dirq.QueueIterator

All Implemented Interfaces:

Iterator<String>

Direct Known Subclasses:

QueueSimple.QueueSimpleIterator

public abstract class QueueIterator
extends Object
implements Iterator<String>

Queue iterator to be implemented by each directory queue implementation.

Author:

Massimo Paladin - massimo.paladin@gmail.com
Copyright CERN 2010-2012

Constructor Summary

Constructors

Constructor and Description
QueueIterator(Queue queue) Constructor which creates an iterator over the given queue.

Method Summary

Methods

Modifier and Type	Method and Description
abstract boolean	buildElements() Collect the elements to be browsed.
boolean	hasNext() Return true if there are still elements to be iterated.
String	next() Return the next element to be iterated.
void	remove() Make sure visited element is removed from the list of iterable items.

Methods inherited from class java.lang.Object

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

Constructor Detail

QueueIterator

public QueueIterator(Queue queue)

Constructor which creates an iterator over the given queue.

Parameters:

queue - the queue over which the iterator should be created

Method Detail

hasNext

public boolean hasNext()

Return true if there are still elements to be iterated.

Specified by:

hasNext in interface Iterator<String>

buildElements

public abstract boolean buildElements()

Collect the elements to be browsed.

Returns:

true if succeed

next

public String next()

Return the next element to be iterated.

Specified by:

next in interface Iterator<String>

remove

public void remove()

Make sure visited element is removed from the list of iterable items.

Specified by:

remove in interface Iterator<String>