InvalidState (Apache Turbine 5.1 API)

java.lang.Object
- org.apache.turbine.modules.screens.error.InvalidState

All Implemented Interfaces:

Assembler, Screen
```
public class InvalidState
extends Object
implements Screen
```
Users will get this screen if the screen on their browser is in an invalid state. For example, if they hit "Back" or "Reload" and then try to submit old form data. If you want one of your screens to check for invalid state then add a hidden form field called "_session_access_counter" with the value currently stored in the session. The SessionValidator action will check to see if it is an old value and redirect you to this screen.

Version:

$Id$

Author:

Dave Bryson, Henning P. Schmiedehausen, Peter Courcoux

- Field Summary
  - Fields inherited from interface org.apache.turbine.modules.Screen
    CACHE_SIZE_DEFAULT, CACHE_SIZE_KEY, NAME, PREFIX
- Constructor Summary
  
  Constructors
  Constructor Description
  
  InvalidState()
- Method Summary
  
  All Methods Instance Methods Concrete Methods
  Modifier and Type Method Description
  
  String doBuild(PipelineData pipelineData)
  Build the Screen.
  - Methods inherited from class java.lang.Object
    clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
  - Methods inherited from interface org.apache.turbine.modules.Screen
    build, getLayout, setLayout

- Constructor Detail
  - InvalidState
```
public InvalidState()
```
- Method Detail
  - doBuild
```
public String doBuild(PipelineData pipelineData)
               throws Exception
```
    Build the Screen.
    
    Specified by:
    
    doBuild in interface Screen
    
    Parameters:
    
    pipelineData - Turbine information.
    
    Returns:
    
    the content of the screen
    
    Throws:
    
    Exception - a generic exception.