org.zkoss.zk.ui.sys

Class SessionsCtrl

java.lang.Object

org.zkoss.zk.ui.Sessions

org.zkoss.zk.ui.sys.SessionsCtrl

public class SessionsCtrl
extends Sessions

An additional utilities for implementation related to Session.

Author:

tomyeh

Field Summary

Fields inherited from class org.zkoss.zk.ui.Sessions

_cnt, _sess

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	SessionsCtrl()

Method Summary

Methods

Modifier and Type	Method and Description
static SessionCtrl	getCurrentCtrl() Returns the current SessionCtrl.
static java.lang.Object	getRawCurrent() Returns the current session or the current session resolver.
static Session	getSession(WebApp wapp, java.lang.Object navsess) Returns the ZK session associated with the specified native session, or null if not found.
static Session	newSession(WebApp wapp, java.lang.Object navsess, java.lang.Object request) Instantiates a ZK session that is associated with the specified native session and request.
static boolean	requestEnter(Session sess) Called when a servlet/portlet starts to serve a request.
static void	requestExit(Session sess) Called when a servlet/portlet completes the service of a request.
static void	setCurrent(Session sess) Sets the session for the current thread.
static void	setCurrent(SessionResolver sr) Sets the session for the current thread.
static void	setRawCurrent(java.lang.Object rawsess) Sets the current session or the current session resolver.
static void	updateCount(boolean inc) Update the session count.

Methods inherited from class org.zkoss.zk.ui.Sessions

getCount, getCurrent, getCurrent

Methods inherited from class java.lang.Object

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

Constructor Detail

SessionsCtrl

protected SessionsCtrl()

Method Detail

setCurrent

public static final void setCurrent(Session sess)

Sets the session for the current thread. Called only internally.

setCurrent

public static final void setCurrent(SessionResolver sr)

Sets the session for the current thread. Unlike setCurrent(Session), the session is resolved later (when Sessions.getCurrent() is called).

Since:

5.0.0

getCurrentCtrl

public static final SessionCtrl getCurrentCtrl()

Returns the current SessionCtrl.

getRawCurrent

public static final java.lang.Object getRawCurrent()

Returns the current session or the current session resolver. The returned value is either Session or SessionResolver.

Since:

5.0.0

See Also:

setRawCurrent(java.lang.Object), setCurrent(Session), setCurrent(SessionResolver)

setRawCurrent

public static final void setRawCurrent(java.lang.Object rawsess)

Sets the current session or the current session resolver.

Parameters:

rawsess - the raw session. It can be null, an instance of Session and SessionResolver. Notice: it is usually the return value of getRawCurrent().

Since:

5.0.0

See Also:

getRawCurrent()

updateCount

public static final void updateCount(boolean inc)

Update the session count.

Called only internally.

Since:

5.0.0

requestEnter

public static boolean requestEnter(Session sess)

Called when a servlet/portlet starts to serve a request. It checks whether the number of concurrent requests per session exceeds the number specified in Configuration.getSessionMaxRequests(). If exceeded, false is returned, and the servlet/portlet shall stop processing and return an error code back the client.

If not exceeded, true is returned, and the servlet/portlet can continue the processing and it shall invoke requestExit(org.zkoss.zk.ui.Session) in the finally clause.

Since:

3.0.1

requestExit

public static void requestExit(Session sess)

Called when a servlet/portlet completes the service of a request. This method must be called if requestEnter(org.zkoss.zk.ui.Session) is called and returns true. This method shall not be called, otherwise.

Since:

3.0.1

getSession

public static final Session getSession(WebApp wapp,
                 java.lang.Object navsess)

Returns the ZK session associated with the specified native session, or null if not found.

Parameters:

navsess - the native session (never null). If HTTP, it is HttpSession. If portlet, it is PortletSession.

Since:

3.0.5

newSession

public static final Session newSession(WebApp wapp,
                 java.lang.Object navsess,
                 java.lang.Object request)

Instantiates a ZK session that is associated with the specified native session and request.

Parameters:

navsess - the native session (never null). If HTTP, it is HttpSession. If portlet, it is PortletSession.

Since:

3.0.5