Re: [JStateMachine-users] Session values

[Brian O'B. <bo...@io...>]

Robson,

With the current interfaces, it will probably depend on which 
session manager package you are using.
The org.jstatemachine.sessionmanagers.servlet.UserSession class 
includes the getHttpSession() method, that allows you access the 
HttpSession that is in scope.  This in turn gives you the standard 
Servlet API methods to put objects in the session context.
The org.jstatemachine.sessionmanagers.inmemory.UserSession 
class does not include anything you can use as it stands.  It 
would, however, be trivial to extend that class to include the data 
you require.
You would need to create the new class, and modify the 
UserSessionManager to create your new class.

Alternatively, I could add something to the IUserSession interface, 
such as getProperties / setProperties, and then implement that in 
both the current session manager packages.

Finally, there is a way you could do it with the current framework 
unchanged, though it is a bit of a hack:
After authentication is complete, add the authentication token to 
the ResponseData.  On each subsequent request, call 
getHistoryStar from your Controller, passing in the application root 
state.  Retrieve the authentication token and check it.  If it passes, 
add it to the new ResponseData and continue.  If it fails, the 
Controller can throw a StateMachineUserException, forcing the UI 
into an exception state that is outside the authenticated area of 
your application.

Let me know how it works, and I will look at adding something to 
the IUserSession interface for the next release.

Thanks,
Brian.

On 18 May 2002, at 11:02, Robson Miranda wrote:

> Hi,
> 
> I'm beginning to use the JStateMachine framework, and I have one
> doubt: how can I put some values to be used during all the states
> visiteds by one user (such as the user identification)?
> 
> Robson.
> 
>