org.apache.wicket.session

Interface ISessionStore

All Known Implementing Classes:

HttpSessionStore, MockSessionStore

public interface ISessionStore

The actual store that is used by Session to store its attributes.

This class is intended for internal framework use.

Author:

Eelco Hillenius, Johan Compagner, Matej Knopp

Nested Class Summary

Nested Classes

Modifier and Type	Interface and Description
static interface	ISessionStore.BindListener Listener invoked when session is bound.
static interface	ISessionStore.UnboundListener Listener invoked when session is unbound.

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()
String	getSessionId(Request request, boolean create) Get the session id for the provided request.
Set<ISessionStore.UnboundListener>	getUnboundListener()
void	invalidate(Request request) Invalidates the session.
Session	lookup(Request request) Retrieves the session for the provided request from this facade.
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.
void	unregisterBindListener(ISessionStore.BindListener listener) Unregisters listener invoked when session is bound.
void	unregisterUnboundListener(ISessionStore.UnboundListener listener) Unregisters listener invoked when session is unbound.

Method Detail

getAttribute

Serializable getAttribute(Request request,
                          String name)

Gets the attribute value with the given name

Parameters:

request - the current request

name - The name of the attribute to store

Returns:

The value of the attribute

getAttributeNames

List<String> getAttributeNames(Request request)

Parameters:

request - the current request

Returns:

List of attributes for this session

setAttribute

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

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

Parameters:

request - the current request

name - the name of the attribute

value - the value of the attribute

removeAttribute

void removeAttribute(Request request,
                     String name)

Removes the attribute with the given name.

Parameters:

request - the current request

name - the name of the attribute to remove

invalidate

void invalidate(Request request)

Invalidates the session.

Parameters:

request - the current request

getSessionId

String getSessionId(Request request,
                    boolean create)

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.

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

lookup

Session lookup(Request request)

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 bind(Request, Session) right after that.

Parameters:

request - The current request

Returns:

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

bind

void bind(Request request,
          Session newSession)

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

Parameters:

request - The request that triggered making a new session

newSession - The new session

flushSession

void flushSession(Request request,
                  Session session)

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.

Parameters:

request - current request

session - session to be flushed

destroy

void destroy()

Called when the WebApplication is destroyed.

registerUnboundListener

void registerUnboundListener(ISessionStore.UnboundListener listener)

Registers listener invoked when session is unbound.

Parameters:

listener -

unregisterUnboundListener

void unregisterUnboundListener(ISessionStore.UnboundListener listener)

Unregisters listener invoked when session is unbound.

Parameters:

listener -

getUnboundListener

Set<ISessionStore.UnboundListener> getUnboundListener()

Returns:

The list of registered unbound listeners

registerBindListener

void registerBindListener(ISessionStore.BindListener listener)

Registers listener invoked when session is bound.

Parameters:

listener -

unregisterBindListener

void unregisterBindListener(ISessionStore.BindListener listener)

Unregisters listener invoked when session is bound.

Parameters:

listener -

getBindListeners

Set<ISessionStore.BindListener> getBindListeners()

Returns:

The list of registered bind listeners