Package org.zkoss.zk.ui

Interface Session

All Superinterfaces:

Scope

All Known Implementing Classes:

SerializableSession, SimpleSession

public interface Session
extends Scope

A user session.

To get the current session, use Sessions.getCurrent(), or Desktop.getSession().

A session, Session, might have multiple pages, Page, while a page belongs to exactly one session. A page, Page, might have many components, Component, while a component belongs to exactly one page.

Author:

tomyeh

Method Summary

Modifier and Type	Method	Description
java.lang.Object	getAttribute(java.lang.String name)	Returns the value of the specified custom attribute.
java.util.Map<java.lang.String,java.lang.Object>	getAttributes()	Returns a map of custom attributes associated with this session.
java.lang.String	getDeviceType()	Returns the device type that this session belongs to.
int	getMaxInactiveInterval()	Return the time, in seconds, between client requests before the servlet container will invalidate this session.
java.lang.Object	getNativeSession()	Returns the native session, or null if not available.
WebApp	getWebApp()	Returns the Web application that this session belongs to.
void	invalidate()	Invalidates this session then unbinds any objects bound to it.
java.lang.Object	removeAttribute(java.lang.String name)	Removes the specified custom attribute.
java.lang.Object	setAttribute(java.lang.String name, java.lang.Object value)	Sets the value of the specified custom attribute.
void	setMaxInactiveInterval(int interval)	Specifies the time, in seconds, between client requests before the servlet container will invalidate this session.

Methods inherited from interface org.zkoss.zk.ui.ext.Scope

addScopeListener, getAttribute, hasAttribute, hasAttribute, removeAttribute, removeScopeListener, setAttribute

Method Detail

getDeviceType

java.lang.String getDeviceType()

Returns the device type that this session belongs to.

A device type identifies the type of a client. For example, "ajax" represents the Web browsers with Ajax support, while "mil" represents clients that supports Mobile Interactive markup Language (on Limited Connected Device, such as mobile phones).

All desktops of the same session must belong to the same device type.

The session's device type is determined by the first desktop's device type.

Since:

2.4.1

getAttribute

java.lang.Object getAttribute(java.lang.String name)

Returns the value of the specified custom attribute.

Specified by:

getAttribute in interface Scope

setAttribute

java.lang.Object setAttribute(java.lang.String name,
                              java.lang.Object value)

Sets the value of the specified custom attribute.

Specified by:

setAttribute in interface Scope

Returns:

the previous value if any (since ZK 5)

removeAttribute

java.lang.Object removeAttribute(java.lang.String name)

Removes the specified custom attribute.

Specified by:

removeAttribute in interface Scope

Returns:

the previous value if any (since ZK 5)

getAttributes

java.util.Map<java.lang.String,java.lang.Object> getAttributes()

Returns a map of custom attributes associated with this session.

Specified by:

getAttributes in interface Scope

getWebApp

WebApp getWebApp()

Returns the Web application that this session belongs to.

invalidate

void invalidate()

Invalidates this session then unbinds any objects bound to it.

Note: you usually have to ask the client to redirect to another page (or reload the same page) by use of Executions.sendRedirect(java.lang.String).

The session is not invalidated immediately. Rather, it is invalidated after processing the current request.

setMaxInactiveInterval

void setMaxInactiveInterval(int interval)

Specifies the time, in seconds, between client requests before the servlet container will invalidate this session. A negative time indicates the session should never timeout.

See Also:

Configuration.setTimerKeepAlive(boolean), Configuration.setSessionMaxInactiveInterval(int)

getMaxInactiveInterval

int getMaxInactiveInterval()

Return the time, in seconds, between client requests before the servlet container will invalidate this session. A negative time indicates the session should never timeout.

Since:

3.0.0

See Also:

Configuration.isTimerKeepAlive(), Configuration.getSessionMaxInactiveInterval()

getNativeSession

java.lang.Object getNativeSession()

Returns the native session, or null if not available. The returned object depends on the type of clients. If HTTP, the object is an instance of javax.servlet.http.HttpSession. If portlet, the object is an instance of javax.portlet.PortletSession.