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From Mike La Budde <>
Subject Re: Multi-page form
Date Tue, 10 Oct 2000 18:45:00 GMT
So, like its cousin before it, ActionForm will become a (base) class 
instead of an interface.

For what it's worth, I prefer leaving both as interfaces and providing 
ActionBase and ActionFormBase for people to inherit from should they choose 
to. Doing it this way facilitates allowing people to plug in existing code 
a little bit easier. That is, one could simply implement the interface in 
an existing class and add the required method(s). Rather than being forced 
to create a new class and using an instance of the existing class to 
delegate the work to...


At 10/10/2000 10:12 AM -0700, Craig R. McClanahan wrote:
>Jason Kitchen wrote:
> > > On the other hand, I would also like to have access to the 
> HttpServletRequest in
> > > the validate method, in order to have access to other parameters in 
> the request,
> > > or, more important, in the session. For example, the validate method 
> could
> > > retrieve the locale of the current user in his session and validate 
> dates,
> > > currencies, etc. in a locale-dependent way.
> > >
> > > Craig, is it something you plan to offer in a future release?
> >
>The current design I am experimenting with gives the validate() method 
>access to the
>controller servlet, the mapping that requested this bean (because you 
>might be using the
>same bean in more than one action), and the incoming request.  This seems 
>to cover all
>the information needs I could think of.
> > > >
> > > > May be some modifications are required to the API in order to support
> > > > this ?
> >
>Yah, one big one ... ActionForm is going to become a class instead of an 
>interface.  But
>then you gain the nice ability to have some default functionality -- for 
>example, you
>don't need a new class for a ValidatingActionBean any more; you just skip 
>overriding the
>default validate() method which always returns "everything is OK".
>See you at ApacheCon Europe <>!
>Session VS01 (23-Oct 13h00-17h00):  Sun Technical Briefing
>Session T06  (24-Oct 14h00-15h00):  Migrating Apache JServ
>                                     Applications to Tomcat

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