org.apache.wicket.session

Class HttpSessionStore

java.lang.Object

org.apache.wicket.session.HttpSessionStore

All Implemented Interfaces:

ISessionStore

public class HttpSessionStore
extends Object
implements ISessionStore

Implementation of ISessionStore that works with web applications and provides some specific http servlet/ session related functionality.

Author:

jcompagner, Eelco Hillenius, Matej Knopp

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
protected static class	HttpSessionStore.SessionBindingListener Reacts on unbinding from the session by cleaning up the session related data.

Nested classes/interfaces inherited from interface org.apache.wicket.session.ISessionStore

ISessionStore.BindListener, ISessionStore.UnboundListener

Constructor Summary

Constructors

Constructor and Description
HttpSessionStore()

Method Summary

Modifier and Type	Method and Description
void	bind(Request request, Session newSession) Adds the provided new session to this facade using the provided request.
void	destroy() Called when the WebApplication is destroyed.
void	flushSession(Request request, Session session) Flushes the session.
Serializable	getAttribute(Request request, String name) Gets the attribute value with the given name
List<String>	getAttributeNames(Request request)
Set<ISessionStore.BindListener>	getBindListeners()
protected javax.servlet.http.HttpServletRequest	getHttpServletRequest(Request request)
String	getSessionId(Request request, boolean create) Get the session id for the provided request.
Set<ISessionStore.UnboundListener>	getUnboundListener()
protected Session	getWicketSession(Request request) Reads the Wicket Session from the HttpSession's attribute
void	invalidate(Request request) Invalidates the session.
Session	lookup(Request request) Retrieves the session for the provided request from this facade.
protected void	onBind(Request request, Session newSession) Template method that is called when a session is being bound to the session store.
protected void	onUnbind(String sessionId) Template method that is called when the session is being detached from the store, which typically happens when the HttpSession was invalidated.
void	registerBindListener(ISessionStore.BindListener listener) Registers listener invoked when session is bound.
void	registerUnboundListener(ISessionStore.UnboundListener listener) Registers listener invoked when session is unbound.
void	removeAttribute(Request request, String name) Removes the attribute with the given name.
void	setAttribute(Request request, String name, Serializable value) Adds or replaces the attribute with the given name and value.
protected void	setWicketSession(Request request, Session session) Stores the Wicket Session in an attribute in the HttpSession
void	unregisterBindListener(ISessionStore.BindListener listener) Unregisters listener invoked when session is bound.
void	unregisterUnboundListener(ISessionStore.UnboundListener listener) Unregisters listener invoked when session is unbound.

Methods inherited from class java.lang.Object

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

Constructor Detail

HttpSessionStore

public HttpSessionStore()

Method Detail

getHttpServletRequest

protected final javax.servlet.http.HttpServletRequest getHttpServletRequest(Request request)

Parameters:

request - The Wicket request

Returns:

The http servlet request

bind

public final void bind(Request request,
                       Session newSession)

Description copied from interface: ISessionStore

Adds the provided new session to this facade using the provided request.

Specified by:

bind in interface ISessionStore

Parameters:

request - The request that triggered making a new session

newSession - The new session

flushSession

public void flushSession(Request request,
                         Session session)

Description copied from interface: ISessionStore

Flushes the session. Flushing the session generally means setting the attribute with the value of the current session. Some servlet containers use the setAttribute() as a signal that the value is dirty and needs to be replicated. Essentially this call comes down to: String attr=getSessionAttributeName(); Session session=getAttribute(attr); setAttribute(attr, session); If the session is not yet bound it will be.

Specified by:

flushSession in interface ISessionStore

Parameters:

request - current request

session - session to be flushed

destroy

public void destroy()

Description copied from interface: ISessionStore

Called when the WebApplication is destroyed.

Specified by:

destroy in interface ISessionStore

getSessionId

public String getSessionId(Request request,
                           boolean create)

Description copied from interface: ISessionStore

Get the session id for the provided request. If create is false and the creation of the actual session is deferred, this method should return null to reflect it doesn't have one.

Specified by:

getSessionId in interface ISessionStore

Parameters:

request - The request

create - Whether to create an actual session (typically an instance of HttpSession) when not already done so

Returns:

The session id for the provided request, possibly null if create is false and the creation of the actual session was deferred

invalidate

public final void invalidate(Request request)

Description copied from interface: ISessionStore

Invalidates the session.

Specified by:

invalidate in interface ISessionStore

Parameters:

request - the current request

lookup

public final Session lookup(Request request)

Description copied from interface: ISessionStore

Retrieves the session for the provided request from this facade.

This method should return null if it is not bound yet, so that Wicket can recognize that it should create a session and call ISessionStore.bind(Request, Session) right after that.

Specified by:

lookup in interface ISessionStore

Parameters:

request - The current request

Returns:

The session for the provided request or null if the session was not bound

getWicketSession

protected Session getWicketSession(Request request)

Reads the Wicket Session from the HttpSession's attribute

Parameters:

request - The Wicket request

Returns:

The Wicket Session or null

setWicketSession

protected void setWicketSession(Request request,
                                Session session)

Stores the Wicket Session in an attribute in the HttpSession

Parameters:

request - The Wicket request

session - The Wicket session

onBind

protected void onBind(Request request,
                      Session newSession)

Template method that is called when a session is being bound to the session store. It is called before the session object itself is added to this store (which is done by calling ISessionStore.setAttribute(Request, String, Serializable) with key Session.SESSION_ATTRIBUTE_NAME.

Parameters:

request - The request

newSession - The new session

onUnbind

protected void onUnbind(String sessionId)

Template method that is called when the session is being detached from the store, which typically happens when the HttpSession was invalidated.

Parameters:

sessionId - The session id of the session that was invalidated.

getAttribute

public final Serializable getAttribute(Request request,
                                       String name)

Description copied from interface: ISessionStore

Gets the attribute value with the given name

Specified by:

getAttribute in interface ISessionStore

Parameters:

request - the current request

name - The name of the attribute to store

Returns:

The value of the attribute

getAttributeNames

public final List<String> getAttributeNames(Request request)

Specified by:

getAttributeNames in interface ISessionStore

Parameters:

request - the current request

Returns:

List of attributes for this session

removeAttribute

public final void removeAttribute(Request request,
                                  String name)

Description copied from interface: ISessionStore

Removes the attribute with the given name.

Specified by:

removeAttribute in interface ISessionStore

Parameters:

request - the current request

name - the name of the attribute to remove

setAttribute

public final void setAttribute(Request request,
                               String name,
                               Serializable value)

Description copied from interface: ISessionStore

Adds or replaces the attribute with the given name and value.

Specified by:

setAttribute in interface ISessionStore

Parameters:

request - the current request

name - the name of the attribute

value - the value of the attribute

registerUnboundListener

public final void registerUnboundListener(ISessionStore.UnboundListener listener)

Description copied from interface: ISessionStore

Registers listener invoked when session is unbound.

Specified by:

registerUnboundListener in interface ISessionStore

unregisterUnboundListener

public final void unregisterUnboundListener(ISessionStore.UnboundListener listener)

Description copied from interface: ISessionStore

Unregisters listener invoked when session is unbound.

Specified by:

unregisterUnboundListener in interface ISessionStore

getUnboundListener

public final Set<ISessionStore.UnboundListener> getUnboundListener()

Specified by:

getUnboundListener in interface ISessionStore

Returns:

The list of registered unbound listeners

registerBindListener

public void registerBindListener(ISessionStore.BindListener listener)

Registers listener invoked when session is bound.

Specified by:

registerBindListener in interface ISessionStore

Parameters:

listener -

unregisterBindListener

public void unregisterBindListener(ISessionStore.BindListener listener)

Unregisters listener invoked when session is bound.

Specified by:

unregisterBindListener in interface ISessionStore

Parameters:

listener -

getBindListeners

public Set<ISessionStore.BindListener> getBindListeners()

Specified by:

getBindListeners in interface ISessionStore

Returns:

The list of registered bind listeners