org.apache.turbine.modules.actions.sessionvalidator
Class SessionValidator

java.lang.Object
  |
  +--org.apache.turbine.modules.Assembler
        |
        +--org.apache.turbine.modules.Action
              |
              +--org.apache.turbine.modules.actions.sessionvalidator.SessionValidator
Direct Known Subclasses:
DefaultSessionValidator, TemplateSecureSessionValidator, TemplateSessionValidator

public abstract class SessionValidator
extends Action

The SessionValidator attempts to retrive the User object from the Servlet API session that is associated with the request. If the data cannot be retrieved, it is handled here. If the user has not been marked as being logged into the system, the user is rejected and the screen is set to the screen.homepage value in TurbineResources.properties.

Other systems generally have a database table which stores this information, but we take advantage of the Servlet API here to save a hit to the database for each and every connection that a user makes.

This action is special in that it should only be executed by the Turbine servlet.

Version:
$Id$
Author:
Dave Bryson

Constructor Summary
SessionValidator()
           
 
Method Summary
abstract  boolean requiresNewSession(RunData data)
          Inform whether we require a new session in order to allow people to access the system.
 
Methods inherited from class org.apache.turbine.modules.Action
doPerform, perform
 
Methods inherited from class java.lang.Object
, clone, equals, finalize, getClass, hashCode, notify, notifyAll, registerNatives, toString, wait, wait, wait
 

Constructor Detail

SessionValidator

public SessionValidator()
Method Detail

requiresNewSession

public abstract boolean requiresNewSession(RunData data)
Inform whether we require a new session in order to allow people to access the system. We accomplish this by doing a redirect and using the HttpSession spec.
Parameters:
data - Turbine information.
Returns:
True if we require a new session in order to allow people to access the system.


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