AbstractListenerContainer

java.lang.Object
- org.logicalcobwebs.proxool.util.AbstractListenerContainer

All Implemented Interfaces:

ListenerContainerIF

Direct Known Subclasses:

CompositeConfigurationListener, CompositeConnectionListener, CompositeProxoolListener, CompositeStateListener, CompositeStatisticsListener
```
public abstract class AbstractListenerContainer
extends java.lang.Object
implements ListenerContainerIF
```
Implementation of ListenerContainerIF that uses a reads/write lock to handle concurrency in a safe and fast way.
The registered listeners are offered to subclasses through the protected getListeners() method. This method returns a reference to an array containing the registered listeners. A new array holding the listeners is created everytime a modification on the registration list is required (add/remove listener). Therefore, subclasses can safely iterate over the received array. Your code sould look like this:
```
     Object[] listeners = getListeners();
     for(int i=0; i
 
 
```
Since:

Proxool 0.7

Version:

$Revision: 1.8 $, $Date: 2004/03/16 08:48:33 $

Author:

Christian Nedregaard (christian_nedregaard@email.com), $Author: brenuart $ (current maintainer)

Constructor Summary

Constructors
Constructor Description

AbstractListenerContainer()

Constructors
Constructor	Description
`AbstractListenerContainer()`

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`void`	`addListener(java.lang.Object listener)`	Add a listener to this container.
`protected java.lang.Object[]`	`getListeners()`	Get a reference to the array of registered listeners.
`boolean`	`isEmpty()`	Get wether this container is empty or not.
`boolean`	`removeListener(java.lang.Object listener)`	Remove a listener from this container.

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Constructor Detail
  - AbstractListenerContainer
```
public AbstractListenerContainer()
```
- Method Detail
  - addListener
```
public void addListener(java.lang.Object listener)
```
    Description copied from interface: ListenerContainerIF
    
    Add a listener to this container.
    
    Specified by:
    
    addListener in interface ListenerContainerIF
    
    Parameters:
    
    listener - the listener to add.
    
    See Also:
    
    ListenerContainerIF.addListener(Object)
  - removeListener
```
public boolean removeListener(java.lang.Object listener)
```
    Description copied from interface: ListenerContainerIF
    
    Remove a listener from this container.
    
    Specified by:
    
    removeListener in interface ListenerContainerIF
    
    Parameters:
    
    listener - the listener to be removed.
    
    Returns:
    
    wether the listnener was found and removed or not.
    
    See Also:
    
    ListenerContainerIF.removeListener(Object)
  - getListeners
```
protected java.lang.Object[] getListeners()
```
    Get a reference to the array of registered listeners.
    
    Returns:
    
    reference to the array containing registered listeners (always not NULL)
  - isEmpty
```
public boolean isEmpty()
```
    Description copied from interface: ListenerContainerIF
    
    Get wether this container is empty or not.
    
    Specified by:
    
    isEmpty in interface ListenerContainerIF
    
    Returns:
    
    wether this container is empty or not.
    
    See Also:
    
    ListenerContainerIF.isEmpty()

Class AbstractListenerContainer

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Constructor Detail

AbstractListenerContainer

Method Detail

addListener

removeListener

getListeners

isEmpty