org.xlightweb
Interface IHttpSession

All Known Implementing Classes:

HttpSession

public interface IHttpSession

The HttpSession. Provides a way to identify a user across more than one page request or visit to a Web site and to store information about that user.

Method Summary

Object	getAttribute(String name) Returns the object bound with the specified name in this session, or null if no object is bound under the name.
Enumeration	getAttributeNames() Returns an Enumeration of String objects containing the names of all the objects bound to this session.
Set<String>	getAttributeNameSet() Returns an Set of String objects containing the names of all the objects bound to this session.
long	getCreationTime() Returns the time when this session was created, measured in milliseconds since midnight January 1, 1970 GMT.
String	getId() Returns a string containing the unique identifier assigned to this session.
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.
int	getMaxInactiveInterval() Returns the maximum time interval, in seconds, that the container will keep this session open between client accesses.
void	invalidate() Invalidates this session then unbinds any objects bound to it.
boolean	isValid() returns if the session is valid
void	removeAttribute(String name) Removes the object bound with the specified name from this session.
void	setAttribute(String name, Object value) Binds an object to this session, using the name specified.
void	setMaxInactiveInterval(int interval) Specifies the time, in seconds, between client requests before the container will invalidate this session.

Method Detail

getAttribute

Object getAttribute(String name)

Returns the object bound with the specified name in this session, or null if no object is bound under the name.

Parameters:

name - a string specifying the name of the object

Returns:

the object with the specified name

Throws:

IllegalStateException - if this method is called on an invalidated session

setAttribute

void setAttribute(String name,
                  Object value)

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.

If the value passed in is null, this has the same effect as calling removeAttribute().

Parameters:

name - the name to which the object is bound; cannot be null

value - the object to be bound

Throws:

IllegalStateException - if this method is called on an invalidated session

removeAttribute

void removeAttribute(String name)

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.

Parameters:

name - the name of the object to remove from this session

Throws:

IllegalStateException - if this method is called on an invalidated session

getAttributeNames

Enumeration getAttributeNames()

Returns an Enumeration of String objects containing the names of all the objects bound to this session.

Returns:

an Enumeration of String objects specifying the names of all the objects bound to this session

Throws:

IllegalStateException - if this method is called on an invalidated session

getAttributeNameSet

Set<String> getAttributeNameSet()

Returns an Set of String objects containing the names of all the objects bound to this session.

Returns:

an Set of String objects specifying the names of all the objects bound to this session

Throws:

IllegalStateException - if this method is called on an invalidated session

getCreationTime

long getCreationTime()

Returns the time when this session was created, measured in milliseconds since midnight January 1, 1970 GMT.

Returns:

a long specifying when this session was created, expressed in milliseconds since 1/1/1970 GMT

Throws:

IllegalStateException - if this method is called on an invalidated session

getId

String getId()

Returns a string containing the unique identifier assigned to this session.

Returns:

a string specifying the identifier assigned to this session

getLastAccessedTime

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.

Returns:

a long representing the last time the client sent a request associated with this session, expressed in milliseconds since 1/1/1970 GMT

Throws:

IllegalStateException - if this method is called on an invalidated session

setMaxInactiveInterval

void setMaxInactiveInterval(int interval)

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

Parameters:

interval - An integer specifying the number of seconds

getMaxInactiveInterval

int getMaxInactiveInterval()

Returns the maximum time interval, in seconds, that the container will keep this session open between client accesses. After this interval, the container will invalidate the session. The maximum time interval can be set with the setMaxInactiveInterval method. A negative time indicates the session should never timeout.

Returns:

an integer specifying the number of seconds this session remains open between client requests

invalidate

void invalidate()

Invalidates this session then unbinds any objects bound to it.

Throws:

IllegalStateException - if this method is called on an already invalidated session

isValid

boolean isValid()

returns if the session is valid

Returns:

true, if the session is valid