Re: RES: Subclassing ActionServlet

[Guido García Bernardo]

This way you can't extend other 'struts core actions' (Dispatch, Lookup...).

I think a better way may be:
- Using a filter (servlet 2.3) in order to pre and post process the request
- Extending RequestDispatcher
Regards,
Guido.
PD. I am not sure, but i think you can find a discussion about that in 
Struts in Action.

Felipe Nascimento wrote:

A simple way that I use do go:

Super Action class, like:
UserMustBeLoggedAction{
   execute(attribs){
       verify session stuff....
       if ok -> myExecute(attribs);
       else return ActionForward;
   }
   abstract myExecute(attribs);
}
NewAction extends UserMustBeLoggedAction{
   myExecute(){
       ......
   }
}
What do experts recommend??

Regards
Felipe
-----Mensagem original-----
De: Gopal Venkata Achi [mailto:[EMAIL PROTECTED] 
Enviada em: quinta-feira, 4 de dezembro de 2003 18:55
Para: Struts Users Mailing List
Assunto: RE: Subclassing ActionServlet

Hi
I have come across a plug-in for Struts, that is called as SAIF (Struts
Action Invocation Framework), which enables us to write a pre-action and
post action methods.  You can use PreAction method for doing all the
session authentication, etc., I did not really use this, but the
features are available at : http://struts.sourceforge.net/saif/
<http://struts.sourceforge.net/saif/> 
Any thoughts on this.
Regards,
Gopal





	-----Original Message----- 
	From: Fullam, Jonathan [mailto:[EMAIL PROTECTED] 
	Sent: Thu 12/4/2003 1:07 PM 
	To: 'Struts Users Mailing List' 
	Cc: 
	Subject: Subclassing ActionServlet
	
	

	All,
	
	I need to check the Session for an authenticated user before
most requests.
	To do this I subclassed ActionServlet and only call
super(request, response)
	upon verification that authenticated user is in the Session.
	
	if (request.getRequestURI().endsWith("welcome.do") |
	request.getRequestURI().endsWith("logon.do") |
	request.getRequestURI().endsWith("html"))
	                {
	                        super.process(request, response);
	                }
	               
	               
	else if (request.getSession().getAttribute("USER") == null)
	                {
	                        //Forward to login page
	                        response.sendRedirect("/welcome.do");
	                }
	
	 I also know about the ability to subclass the RequestProcessor
and
	providing my own implementation of the processPreprocess method
to
	accomplish the same thing.
	
	Does anybody know of any serious disadvantages or side effects
of
	subclassing the ActionServlet class rather than the
RequestProcessor class.
	

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