org.apache.turbine.services.session
Class TurbineSessionService

java.lang.Object
  org.apache.turbine.services.BaseInitable
      org.apache.turbine.services.BaseService
          org.apache.turbine.services.TurbineBaseService
              org.apache.turbine.services.session.TurbineSessionService

All Implemented Interfaces:

Initable, Service, SessionService

public class TurbineSessionService

extends TurbineBaseService

implements SessionService

The SessionService allows thread-safe access to the current sessions of the current context. The session objects that are cached by this service are obtained through a listener, which must be configured via your web application's web.xml deployement descriptor as follows:

 <listener>
   <listener-class>
     org.apache.turbine.session.SessionListener
   </listener-class>
 </listener>
 

Since:

2.3

Version:

$Id: TurbineSessionService.java 534527 2007-05-02 16:10:59Z tv $

Author:

Quinton McCombs, Daniel Rall

See Also:

TurbineSession, SessionListener

Field Summary

Fields inherited from class org.apache.turbine.services.BaseService

configuration, name, serviceBroker

Fields inherited from class org.apache.turbine.services.BaseInitable

initableBroker, isInitialized

Fields inherited from interface org.apache.turbine.services.session.SessionService

SERVICE_NAME

Constructor Summary

TurbineSessionService()

Method Summary

void	addSession(javax.servlet.http.HttpSession session) Adds a session to the current list.
java.util.Collection	getActiveSessions() Gets a list of the active sessions.
java.util.Collection	getActiveUsers() Gets a collection of all user objects representing the users currently logged in.
javax.servlet.http.HttpSession	getSession(java.lang.String sessionId) Gets the HttpSession by the session identifier
java.util.Collection	getSessionsForUser(User user) Get a collection of all session on which the given user is logged in.
User	getUserFromSession(javax.servlet.http.HttpSession session) Gets the User object of the the specified HttpSession.
void	init() Initializes the service
boolean	isUserLoggedIn(User user) Determines if a given user is currently logged in.
void	removeSession(javax.servlet.http.HttpSession session) Removes a session from the current list.
void	shutdown() Returns to uninitialized state.

Methods inherited from class org.apache.turbine.services.TurbineBaseService

init, init, init

Methods inherited from class org.apache.turbine.services.BaseService

getConfiguration, getName, getProperties, getServiceBroker, setName, setServiceBroker

Methods inherited from class org.apache.turbine.services.BaseInitable

getInit, getInitableBroker, setInit, setInitableBroker

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.turbine.services.Service

getConfiguration, getName, getProperties, setName, setServiceBroker

Methods inherited from interface org.apache.turbine.services.Initable

getInit, init, setInitableBroker

Constructor Detail

TurbineSessionService

public TurbineSessionService()

Method Detail

getActiveSessions

public java.util.Collection getActiveSessions()

Gets a list of the active sessions.

Specified by:

getActiveSessions in interface SessionService

Returns:

A copy of the list of HttpSession objects.

addSession

public void addSession(javax.servlet.http.HttpSession session)

Adds a session to the current list. This method should only be called by the listener.

Specified by:

addSession in interface SessionService

Parameters:

session - Session to add

removeSession

public void removeSession(javax.servlet.http.HttpSession session)

Removes a session from the current list. This method should only be called by the listener.

Specified by:

removeSession in interface SessionService

Parameters:

session - Session to remove

isUserLoggedIn

public boolean isUserLoggedIn(User user)

Determines if a given user is currently logged in. The actual implementation of the User object must implement the equals() method. By default, Torque based objects (liek TurbineUser) have an implementation of equals() that will compare the result of getPrimaryKey().

Specified by:

isUserLoggedIn in interface SessionService

Parameters:

user - User to check for

Returns:

true if the user is logged in on one of the active sessions.

getActiveUsers

public java.util.Collection getActiveUsers()

Gets a collection of all user objects representing the users currently logged in. This will exclude any instances of anonymous user that Turbine will use before the user actually logs on.

Specified by:

getActiveUsers in interface SessionService

Returns:

A set of User objects.

getUserFromSession

public User getUserFromSession(javax.servlet.http.HttpSession session)

Gets the User object of the the specified HttpSession.

Specified by:

getUserFromSession in interface SessionService

Parameters:

session - The session from which to extract a user.

Returns:

The Turbine User object.

getSession

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

Gets the HttpSession by the session identifier

Specified by:

getSession in interface SessionService

Parameters:

sessionId - The unique session identifier.

Returns:

The session keyed by the specified identifier.

getSessionsForUser

public java.util.Collection getSessionsForUser(User user)

Get a collection of all session on which the given user is logged in.

Specified by:

getSessionsForUser in interface SessionService

Parameters:

user - the user

Returns:

Collection of HtttSession objects

init

public void init()

Initializes the service

Specified by:

init in interface Initable

Overrides:

init in class TurbineBaseService

shutdown

public void shutdown()

Returns to uninitialized state.

Specified by:

shutdown in interface Initable

Overrides:

shutdown in class TurbineBaseService