org.simoes.lpd.util
Class Queue

java.lang.Object
  org.simoes.lpd.util.Queue

public class Queue

extends java.lang.Object

Queue is just a queue

Author:

Jason Crowe

Field Summary

protected static long	counter
static long	INVALID_ID
protected java.lang.String	name
protected java.util.List	queue

Constructor Summary

Queue(java.lang.String name)
constructor.

Method Summary

long	add(java.lang.Object object) add method.
java.lang.String	getName() getName.
QueuedObject	getNext() Gets the last Object in the Queue without removing it.
java.util.List	list() list of the items in the queue (a copy of each one).
static void	main(java.lang.String[] args)
java.lang.Object	remove(long id) remove by unique identifier.
int	size() size of the queue.

Methods inherited from class java.lang.Object

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

Field Detail

INVALID_ID

public static final long INVALID_ID

See Also:

Constant Field Values

counter

protected static long counter

name

protected java.lang.String name

queue

protected java.util.List queue

Constructor Detail

Queue

public Queue(java.lang.String name)

constructor.

Parameters:

name - - name of the print queue.

Method Detail

getName

public java.lang.String getName()

getName.

Returns:

the queue name.

add

public long add(java.lang.Object object)

add method.

Parameters:

object - - object to add to the queue.

Returns:

unique identifier of the queued object.

remove

public java.lang.Object remove(long id)
                        throws ObjectNotFoundException

remove by unique identifier.

Parameters:

id - - unique identifier of the queued object.

Returns:

object matching the identifier

Throws:

ObjectNotFoundException - if the object is not found in the queue

size

public int size()

size of the queue.

Returns:

size of the queue.

list

public java.util.List list()

list of the items in the queue (a copy of each one).

Returns:

a copy of the items in the list

getNext

public QueuedObject getNext()
                     throws ObjectNotFoundException

Gets the last Object in the Queue without removing it.

Returns:

QueuedObject the last QueuedObject in the queue

Throws:

ObjectNotFoundException

main

public static void main(java.lang.String[] args)