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org.altara.util
Class Queue  

java.lang.Object
  org.altara.util.Queue

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public class Queue

extends java.lang.Object

Queue is a wrapper around a LinkedList providing a queue-oriented view.

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Field Summary
(package private)  boolean	isLocked
(package private)  java.util.LinkedList	list

 

Constructor Summary

Queue()

 

Method Summary
java.lang.Object	dequeue()           Retrieve the next object from the queue.
void	enqueue(java.lang.Object obj)           Enqueue an object.
void	flush()           Flush the queue.
void	lock()           Lock the queue.
java.lang.Object	nb_dequeue()           Retrieve the next object from the queue.
int	size()           Return this queue's size.
void	unlock()           Unlock the queue.

 

Methods inherited from class java.lang.Object

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

 

Field Detail

list

java.util.LinkedList list

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isLocked

boolean isLocked

Constructor Detail

Queue

public Queue()

Method Detail

lock

public void lock()

Lock the queue. A locked queue may not be dequeued from - i.e. it will block as if it is empty even when it is full. Locking has no effect on nb_dequeue().

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unlock

public void unlock()

Unlock the queue. Reverses the effect of a previous lock().

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flush

public void flush()

Flush the queue. Removes all elements from the queue.

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enqueue

public void enqueue(java.lang.Object obj)

Enqueue an object. This will place the object into the queue for later in-order dequeueing.

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dequeue

public java.lang.Object dequeue()
                         throws java.lang.InterruptedException

Retrieve the next object from the queue. This method will block if the queue is empty.

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nb_dequeue

public java.lang.Object nb_dequeue()

Retrieve the next object from the queue. This method will return null if the queue is empty.

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size

public int size()

Return this queue's size.

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