uk.org.ogsadai.sessions
Class SessionEventDispatcher

java.lang.Object
  |
  +--uk.org.ogsadai.sessions.SessionEventDispatcher

All Implemented Interfaces:

SessionListener

public class SessionEventDispatcher

extends java.lang.Object

implements SessionListener

A thread-safe class for dispatching session events to a collection of session listeners. This class implements the SessionListener interface for the sake of consistency. Each time one of the methods of this interface is invoked, the corresponding event will be dispatched to each of the registered listeners.

Author:

The OGSA-DAI Project Team

Field Summary

private static java.lang.String	COPYRIGHT_NOTICE Copyright statement
private java.util.Collection	mListeners The session listeners that are attached to this session.

Constructor Summary

SessionEventDispatcher()

Method Summary

void	addSessionListener(SessionListener listener) Registers a session listener which will be notified of subsequent session events.
void	sessionCleanedUp(SessionEvent event) Handles the "session cleaned-up" event by invoking the sessionCleanedUp() method on each session listener.
void	sessionJoined(SessionEvent event) Handles the "session joined" event by invoking the sessionJoined() method on each session listener.
void	sessionLeft(SessionEvent event) Handles the "session left" event by invoking the sessionLeft() method on each session listener.

Methods inherited from class java.lang.Object

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

Field Detail

COPYRIGHT_NOTICE

private static final java.lang.String COPYRIGHT_NOTICE

Copyright statement

See Also:

Constant Field Values

mListeners

private final java.util.Collection mListeners

The session listeners that are attached to this session.

Constructor Detail

SessionEventDispatcher

public SessionEventDispatcher()

Method Detail

sessionJoined

public void sessionJoined(SessionEvent event)

Handles the "session joined" event by invoking the sessionJoined() method on each session listener.

Specified by:

sessionJoined in interface SessionListener

Parameters:

event - The session event.

sessionLeft

public void sessionLeft(SessionEvent event)

Handles the "session left" event by invoking the sessionLeft() method on each session listener.

Specified by:

sessionLeft in interface SessionListener

Parameters:

event - The session event.

sessionCleanedUp

public void sessionCleanedUp(SessionEvent event)

Handles the "session cleaned-up" event by invoking the sessionCleanedUp() method on each session listener.

Specified by:

sessionCleanedUp in interface SessionListener

Parameters:

event - The session event.

addSessionListener

public void addSessionListener(SessionListener listener)

Registers a session listener which will be notified of subsequent session events.

Parameters:

listener - The SessionListener to register.

Throws:

java.lang.IllegalArgumentException - if listener is null.