Queue (eXo PLF:: Kernel :: Component :: Cache Service 6.2.2-RC01 API)

All Known Implementing Classes:

SynchronizedQueue
```
public interface Queue<I extends Item>
```
The queue needed by the concurrent FIFO cache.

Version:

$Revision$

Author:

Julien Viet

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`void`	`add(I item)`	Add the item to the head of the list.
`boolean`	`remove(I item)`	Attempt to remove an item from the queue.
`int`	`size()`	Returns the queue size
`ArrayList<I>`	`trim(int size)`	Attempt to trim the queue.

- Method Detail
  - size
```
int size()
```
    Returns the queue size
    
    Returns:
    
    the size
  - remove
```
boolean remove(I item)
```
    Attempt to remove an item from the queue.
    
    Parameters:
    
    item - the item to remove
    
    Returns:
    
    true if the item was removed by this thread
  - add
```
void add(I item)
```
    Add the item to the head of the list.
    
    Parameters:
    
    item - the item to add
  - trim
```
ArrayList<I> trim(int size)
```
    Attempt to trim the queue. Trim will occur if no other thread is already performing a trim and the queue size is greater than the provided size.
    
    Parameters:
    
    size - the wanted size
    
    Returns:
    
    the list of evicted items