jodd.servlet

Class SessionMonitor

java.lang.Object

jodd.servlet.SessionMonitor

All Implemented Interfaces:

java.util.EventListener, javax.servlet.http.HttpSessionListener

public class SessionMonitor
extends java.lang.Object
implements javax.servlet.http.HttpSessionListener

Session monitor keep map of sessions and allow registration of session listeners in runtime.

Field Summary

Fields

Modifier and Type	Field and Description
protected java.util.List<javax.servlet.http.HttpSessionListener>	listeners
protected java.util.concurrent.ConcurrentMap<java.lang.String,javax.servlet.http.HttpSession>	sessionMap
protected static SessionMonitor	sessionMonitor

Constructor Summary

Constructors

Constructor and Description
SessionMonitor() Creates new session monitor.

Method Summary

Modifier and Type	Method and Description
void	destroy() Destroys this session monitor by removing all collected resources.
static SessionMonitor	getInstance() Returns singleton instance of SessionMonitor.
javax.servlet.http.HttpSession	getSession(java.lang.String sessionId) Returns session for given session id.
java.util.Iterator<java.lang.String>	iterator() Returns iterator for all stored session IDs.
void	registerListener(javax.servlet.http.HttpSessionListener listener) Registers new session listener.
void	removeListener(javax.servlet.http.HttpSessionListener listener) Removes existing session listener.
void	sessionCreated(javax.servlet.http.HttpSessionEvent httpSessionEvent) Stores session in map and broadcasts event to registered listeners.
void	sessionDestroyed(javax.servlet.http.HttpSessionEvent httpSessionEvent) Removes session from a map and broadcasts event to registered listeners.

Methods inherited from class java.lang.Object

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

Field Detail

sessionMonitor

protected static SessionMonitor sessionMonitor

listeners

protected java.util.List<javax.servlet.http.HttpSessionListener> listeners

sessionMap

protected java.util.concurrent.ConcurrentMap<java.lang.String,javax.servlet.http.HttpSession> sessionMap

Constructor Detail

SessionMonitor

public SessionMonitor()

Creates new session monitor.

Method Detail

getInstance

public static SessionMonitor getInstance()

Returns singleton instance of SessionMonitor.

registerListener

public void registerListener(javax.servlet.http.HttpSessionListener listener)

Registers new session listener.

removeListener

public void removeListener(javax.servlet.http.HttpSessionListener listener)

Removes existing session listener.

sessionCreated

public void sessionCreated(javax.servlet.http.HttpSessionEvent httpSessionEvent)

Stores session in map and broadcasts event to registered listeners.

Specified by:

sessionCreated in interface javax.servlet.http.HttpSessionListener

sessionDestroyed

public void sessionDestroyed(javax.servlet.http.HttpSessionEvent httpSessionEvent)

Removes session from a map and broadcasts event to registered listeners.

Specified by:

sessionDestroyed in interface javax.servlet.http.HttpSessionListener

getSession

public javax.servlet.http.HttpSession getSession(java.lang.String sessionId)

Returns session for given session id. Returns null if session expired.

iterator

public java.util.Iterator<java.lang.String> iterator()

Returns iterator for all stored session IDs. Keep in mind that session may NOT longer exist during the iteration!

destroy

public void destroy()

Destroys this session monitor by removing all collected resources.