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Session (Catalina Internal API Documentation)
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org.apache.catalina
Interface Session

public interface Session

A Session is the Catalina-internal facade for an HttpSession that is used to maintain state information between requests for a particular user of a web application.

Version:
$Revision: 1.5 $ $Date: 2001/07/31 02:00:02 $
Author:
Craig R. McClanahan

Field Summary
static java.lang.String SESSION_CREATED_EVENT
          The SessionEvent event type when a session is created.
static java.lang.String SESSION_DESTROYED_EVENT
          The SessionEvent event type when a session is destroyed.
 
Method Summary
 void access()
          Update the accessed time information for this session.
 void addSessionListener(SessionListener listener)
          Add a session event listener to this component.
 void expire()
          Perform the internal processing required to invalidate this session, without triggering an exception if the session has already expired.
 java.lang.String getAuthType()
          Return the authentication type used to authenticate our cached Principal, if any.
 long getCreationTime()
          Return the creation time for this session.
 java.lang.String getId()
          Return the session identifier for this session.
 java.lang.String getInfo()
          Return descriptive information about this Session implementation and the corresponding version number, in the format <description>/<version>.
 long getLastAccessedTime()
          Return the last time the client sent a request associated with this session, as the number of milliseconds since midnight, January 1, 1970 GMT.
 Manager getManager()
          Return the Manager within which this Session is valid.
 int getMaxInactiveInterval()
          Return the maximum time interval, in seconds, between client requests before the servlet container will invalidate the session.
 java.lang.Object getNote(java.lang.String name)
          Return the object bound with the specified name to the internal notes for this session, or null if no such binding exists.
 java.util.Iterator getNoteNames()
          Return an Iterator containing the String names of all notes bindings that exist for this session.
 java.security.Principal getPrincipal()
          Return the authenticated Principal that is associated with this Session.
 javax.servlet.http.HttpSession getSession()
          Return the HttpSession for which this object is the facade.
 boolean isValid()
          Return the isValid flag for this session.
 void recycle()
          Release all object references, and initialize instance variables, in preparation for reuse of this object.
 void removeNote(java.lang.String name)
          Remove any object bound to the specified name in the internal notes for this session.
 void removeSessionListener(SessionListener listener)
          Remove a session event listener from this component.
 void setAuthType(java.lang.String authType)
          Set the authentication type used to authenticate our cached Principal, if any.
 void setCreationTime(long time)
          Set the creation time for this session.
 void setId(java.lang.String id)
          Set the session identifier for this session.
 void setManager(Manager manager)
          Set the Manager within which this Session is valid.
 void setMaxInactiveInterval(int interval)
          Set the maximum time interval, in seconds, between client requests before the servlet container will invalidate the session.
 void setNew(boolean isNew)
          Set the isNew flag for this session.
 void setNote(java.lang.String name, java.lang.Object value)
          Bind an object to a specified name in the internal notes associated with this session, replacing any existing binding for this name.
 void setPrincipal(java.security.Principal principal)
          Set the authenticated Principal that is associated with this Session.
 void setValid(boolean isValid)
          Set the isValid flag for this session.
 

Field Detail

SESSION_CREATED_EVENT


public static final java.lang.String SESSION_CREATED_EVENT
The SessionEvent event type when a session is created.

See Also:
Constant Field Values

SESSION_DESTROYED_EVENT


public static final java.lang.String SESSION_DESTROYED_EVENT
The SessionEvent event type when a session is destroyed.

See Also:
Constant Field Values
Method Detail

getAuthType


public java.lang.String getAuthType()
Return the authentication type used to authenticate our cached Principal, if any.

setAuthType


public void setAuthType(java.lang.String authType)
Set the authentication type used to authenticate our cached Principal, if any.

Parameters:
authType - The new cached authentication type

getCreationTime


public long getCreationTime()
Return the creation time for this session.

setCreationTime


public void setCreationTime(long time)
Set the creation time for this session. This method is called by the Manager when an existing Session instance is reused.

Parameters:
time - The new creation time

getId


public java.lang.String getId()
Return the session identifier for this session.

setId


public void setId(java.lang.String id)
Set the session identifier for this session.

Parameters:
id - The new session identifier

getInfo


public java.lang.String getInfo()
Return descriptive information about this Session implementation and the corresponding version number, in the format <description>/<version>.

getLastAccessedTime


public long getLastAccessedTime()
Return the last time the client sent a request associated with this session, as the number of milliseconds since midnight, January 1, 1970 GMT. Actions that your application takes, such as getting or setting a value associated with the session, do not affect the access time.

getManager


public Manager getManager()
Return the Manager within which this Session is valid.

setManager


public void setManager(Manager manager)
Set the Manager within which this Session is valid.

Parameters:
manager - The new Manager

getMaxInactiveInterval


public int getMaxInactiveInterval()
Return the maximum time interval, in seconds, between client requests before the servlet container will invalidate the session. A negative time indicates that the session should never time out.

setMaxInactiveInterval


public void setMaxInactiveInterval(int interval)
Set the maximum time interval, in seconds, between client requests before the servlet container will invalidate the session. A negative time indicates that the session should never time out.

Parameters:
interval - The new maximum interval

setNew


public void setNew(boolean isNew)
Set the isNew flag for this session.

Parameters:
isNew - The new value for the isNew flag

getPrincipal


public java.security.Principal getPrincipal()
Return the authenticated Principal that is associated with this Session. This provides an Authenticator with a means to cache a previously authenticated Principal, and avoid potentially expensive Realm.authenticate() calls on every request. If there is no current associated Principal, return null.

setPrincipal


public void setPrincipal(java.security.Principal principal)
Set the authenticated Principal that is associated with this Session. This provides an Authenticator with a means to cache a previously authenticated Principal, and avoid potentially expensive Realm.authenticate() calls on every request.

Parameters:
principal - The new Principal, or null if none

getSession


public javax.servlet.http.HttpSession getSession()
Return the HttpSession for which this object is the facade.

setValid


public void setValid(boolean isValid)
Set the isValid flag for this session.

Parameters:
isValid - The new value for the isValid flag

isValid


public boolean isValid()
Return the isValid flag for this session.

access


public void access()
Update the accessed time information for this session. This method should be called by the context when a request comes in for a particular session, even if the application does not reference it.

addSessionListener


public void addSessionListener(SessionListener listener)
Add a session event listener to this component.

expire


public void expire()
Perform the internal processing required to invalidate this session, without triggering an exception if the session has already expired.

getNote


public java.lang.Object getNote(java.lang.String name)
Return the object bound with the specified name to the internal notes for this session, or null if no such binding exists.

Parameters:
name - Name of the note to be returned

getNoteNames


public java.util.Iterator getNoteNames()
Return an Iterator containing the String names of all notes bindings that exist for this session.

recycle


public void recycle()
Release all object references, and initialize instance variables, in preparation for reuse of this object.

removeNote


public void removeNote(java.lang.String name)
Remove any object bound to the specified name in the internal notes for this session.

Parameters:
name - Name of the note to be removed

removeSessionListener


public void removeSessionListener(SessionListener listener)
Remove a session event listener from this component.

setNote


public void setNote(java.lang.String name,
                    java.lang.Object value)
Bind an object to a specified name in the internal notes associated with this session, replacing any existing binding for this name.

Parameters:
name - Name to which the object should be bound
value - Object to be bound to the specified name
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