Session timeout and callback

[Simon Raveh <sr...@gmail.com>]

Hi,

I'm developing an application using Tapestry 4 and I have a question
regarding session timeout.
when the session timeout I'm trying to create a callback object  to an
IExternaLPage   using this code  in my pageValidate method

Callback callback = new ExternalCallback(pageName,
getPageName(),getRequestCycle().getListenerParameters());
Login login = getLogin();
login.setCallback(callback);
throw new PageRedirectException(login);

The problem is that getListenerParameters is always null.
What or how can I restore the state  of the page  after Login.

Thanks,
Simon

Re: Session timeout and callback

[Jesse Kuhnert <jk...@gmail.com>]

The listener parameters won't have the state of your page (in most
instances). .

What you have to do is implement IExternalPage (
http://tapestry.apache.org/tapestry4.1/apidocs/org/apache/tapestry/IExternalPage.html)
on your page class like so:

@Persist
public abstract void setUserId(String madeUpId);

public void activateExternalPage(Object[] parameters, IRequestCycle cycle)
{
   String userId = (String)parameters[0];

   setUserId(userId);
}

The parameters that you give in the ExternalCallback constructor will be the
same values passed back into your page in the activateExternalPage method.

Sometimes it's possible to automate the process a little more but with the
many varied ways people use state schemes it's probably best to start with
this first and then move out from there.

On 4/27/07, Simon Raveh <sr...@gmail.com> wrote:
>
> Hi,
>
> I'm developing an application using Tapestry 4 and I have a question
> regarding session timeout.
> when the session timeout I'm trying to create a callback object  to an
> IExternaLPage   using this code  in my pageValidate method
>
> Callback callback = new ExternalCallback(pageName,
> getPageName(),getRequestCycle().getListenerParameters());
> Login login = getLogin();
> login.setCallback(callback);
> throw new PageRedirectException(login);
>
> The problem is that getListenerParameters is always null.
> What or how can I restore the state  of the page  after Login.
>
> Thanks,
> Simon
>



-- 
Jesse Kuhnert
Tapestry/Dojo team member/developer

Open source based consulting work centered around
dojo/tapestry/tacos/hivemind. http://blog.opencomponentry.com