Cocoa app design advice

Question

hello,
as i'm studying cocoa i've created a test app and i'm looking for some advice/direction when it comes to design. this is what i've done so far:
1. placed a custom view on my main window linked to my custom subclass "dropview" of nsview
2. placed a table view on my main window linked to a "appcontroller" object
with the custom view i can accept drags and when i do i use a nstask method to search for files and place these files in an array. then i want to display these files in my table view. here are my questions: since the array variable is defined in my nsview subclass what is the right way to send that information to my appcontoller object? so far i have made a declaration of this variable above the @interface dropview and used #import dropview.h in my appcontroller.m file. then when the app launches it tries to set the table view from the start before my array variable is defined, but once the array variable is defined how do i tell the table view to update? i have tried to tell my table view to reloaddata from my dropview class but the table view is linked to my appcontroller class. i hope this makes sense and any advice on how i will communicate between the 2 classes is greatly appreciated!
thank you,
rick

Answer 1

You should create one servlet, which accepts the params of any form and passes them to the backend.
In summary:
The one servlet is a 'controller' servlet ( the 'C' in MVC design).
It takes in all url requests for all JSP pages (never allow a user to directly call up a JSP page) or from a submit from a form tag on any JSP page, or from a click on a hyperlink. It verifies the person is logged in (authenticated) and has permission to view the JSP page it wants to view (authorization). If its not authenticated or authorized, it dispatches to an error page. If it is, it determines what JSP page the request is comming from and what it wants (example: update button was clicked). It then instansiates business logic and sends the JSP page's information to it. The business logic performs the work. The data coming back from the business logic is put in request scope by the servlet (not by the business logic) and the servlet dispatches to the appropriate JSP page (which will get data out of request scope to be displayed).