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

java.lang.Object
  org.apache.turbine.modules.Assembler
      org.apache.turbine.modules.Action
          org.apache.turbine.modules.actions.sessionvalidator.SessionValidator
              org.apache.turbine.modules.actions.sessionvalidator.DefaultSessionValidator

public class DefaultSessionValidator

extends SessionValidator

The SessionValidator attempts to retrieve 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: DefaultSessionValidator.java 534527 2007-05-02 16:10:59Z tv $

Author:

Dave Bryson, Henning P. Schmiedehausen

Constructor Summary

DefaultSessionValidator()

Method Summary

void	doPerform(RunData data) Execute the action.

Methods inherited from class org.apache.turbine.modules.Action

perform

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

DefaultSessionValidator

public DefaultSessionValidator()

Method Detail

doPerform

public void doPerform(RunData data)
               throws TurbineException

Execute the action. The default is to populate the RunData object and, if the user is unknown, to force a login screen (as set in the tr.props).

Specified by:

doPerform in class Action

Parameters:

data - Turbine RunData context information.

Throws:

TurbineException - The anonymous user could not be obtained from the security service

See Also:

InvalidState