Class HttpSessionImpl
- All Implemented Interfaces:
HttpSession
HttpSession based on Session support.- Author:
- Jeanfrancois Arcand
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Constructor Summary
ConstructorsConstructorDescriptionHttpSessionImpl(WebappContext contextImpl, Session session) Create an HttpSession. -
Method Summary
Modifier and TypeMethodDescriptionprotected voidaccess()Reset the timestamp.getAttribute(String key) Returns the object bound with the specified name in this session, ornullif no object is bound under the name.Returns anEnumerationofStringobjects containing the names of all the objects bound to this session.longReturns the time when this session was created, measured in milliseconds since midnight January 1, 1970 GMT.getId()Returns a string containing the unique identifier assigned to this session.longReturns the last time the client sent a request associated with this session, as the number of milliseconds since midnight January 1, 1970 GMT, and marked by the time the container received the request.intReturns the maximum time interval, in seconds, that the servlet container will keep this session open between client accesses.Returns the ServletContext to which this session belongs.voidInvalidates this session then unbinds any objects bound to it.booleanisNew()Returnstrueif the client does not yet know about the session or if the client chooses not to join the session.protected booleanisValid()Is the current Session valid?protected voidnotifyIdChanged(String oldId) Invoke to notify all registeredHttpSessionListenerof the session has just been created.protected voidInvoke to notify all registeredHttpSessionListenerof the session has just been created.voidremoveAttribute(String key) Removes the object bound with the specified name from this session.voidsetAttribute(String key, Object value) Binds an object to this session, using the name specified.voidsetMaxInactiveInterval(int sessionTimeout) Specifies the time, in seconds, between client requests before the servlet container will invalidate this session.
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Constructor Details
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HttpSessionImpl
Create an HttpSession.- Parameters:
contextImpl-session- internal session object
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Method Details
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getCreationTime
public long getCreationTime()Returns the time when this session was created, measured in milliseconds since midnight January 1, 1970 GMT.- Specified by:
getCreationTimein interfaceHttpSession- Returns:
- a
longspecifying when this session was created, expressed in milliseconds since 1/1/1970 GMT
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getId
Returns a string containing the unique identifier assigned to this session. The identifier is assigned by the servlet container and is implementation dependent.- Specified by:
getIdin interfaceHttpSession- Returns:
- a string specifying the identifier assigned to this session
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isValid
protected boolean isValid()Is the current Session valid?- Returns:
- true if valid.
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getLastAccessedTime
public long getLastAccessedTime()Returns the last time the client sent a request associated with this session, as the number of milliseconds since midnight January 1, 1970 GMT, and marked by the time the container received the request.Actions that your application takes, such as getting or setting a value associated with the session, do not affect the access time.
- Specified by:
getLastAccessedTimein interfaceHttpSession- Returns:
- a
longrepresenting the last time the client sent a request associated with this session, expressed in milliseconds since 1/1/1970 GMT
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access
protected void access()Reset the timestamp. -
getServletContext
Returns the ServletContext to which this session belongs.- Specified by:
getServletContextin interfaceHttpSession- Returns:
- The ServletContext object for the web application
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setMaxInactiveInterval
public void setMaxInactiveInterval(int sessionTimeout) Specifies the time, in seconds, between client requests before the servlet container will invalidate this session.An interval value of zero or less indicates that the session should never timeout.
- Specified by:
setMaxInactiveIntervalin interfaceHttpSession- Parameters:
sessionTimeout- An integer specifying the number of seconds
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getMaxInactiveInterval
public int getMaxInactiveInterval()Returns the maximum time interval, in seconds, that the servlet container will keep this session open between client accesses. After this interval, the servlet container will invalidate the session. The maximum time interval can be set with thesetMaxInactiveIntervalmethod.A return value of zero or less indicates that the session will never timeout.
- Specified by:
getMaxInactiveIntervalin interfaceHttpSession- Returns:
- an integer specifying the number of seconds this session remains open between client requests
- See Also:
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getAttribute
Returns the object bound with the specified name in this session, ornullif no object is bound under the name.- Specified by:
getAttributein interfaceHttpSession- Parameters:
key- a string specifying the name of the object- Returns:
- the object with the specified name
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getAttributeNames
Returns anEnumerationofStringobjects containing the names of all the objects bound to this session.- Specified by:
getAttributeNamesin interfaceHttpSession- Returns:
- an
EnumerationofStringobjects specifying the names of all the objects bound to this session
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setAttribute
Binds an object to this session, using the name specified. If an object of the same name is already bound to the session, the object is replaced.After this method executes, and if the new object implements
HttpSessionBindingListener, the container callsHttpSessionBindingListener.valueBound. The container then notifies anyHttpSessionAttributeListeners in the web application.If an object was already bound to this session of this name that implements
HttpSessionBindingListener, itsHttpSessionBindingListener.valueUnboundmethod is called.If the value passed in is null, this has the same effect as calling
removeAttribute().- Specified by:
setAttributein interfaceHttpSession- Parameters:
key- the name to which the object is bound; cannot be nullvalue- the object to be bound
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removeAttribute
Removes the object bound with the specified name from this session. If the session does not have an object bound with the specified name, this method does nothing.After this method executes, and if the object implements
HttpSessionBindingListener, the container callsHttpSessionBindingListener.valueUnbound. The container then notifies anyHttpSessionAttributeListeners in the web application.- Specified by:
removeAttributein interfaceHttpSession- Parameters:
key- the name of the object to remove from this session
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invalidate
public void invalidate()Invalidates this session then unbinds any objects bound to it.- Specified by:
invalidatein interfaceHttpSession
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isNew
public boolean isNew()Returnstrueif the client does not yet know about the session or if the client chooses not to join the session. For example, if the server used only cookie-based sessions, and the client had disabled the use of cookies, then a session would be new on each request.- Specified by:
isNewin interfaceHttpSession- Returns:
trueif the server has created a session, but the client has not yet joined
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notifyNew
protected void notifyNew()Invoke to notify all registeredHttpSessionListenerof the session has just been created. -
notifyIdChanged
Invoke to notify all registeredHttpSessionListenerof the session has just been created.
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