[Webware-discuss] MVC and Servlets

[Ernesto R. <ae...@re...>]

Dear all,

earlier we saw how a MVC design could be used to clearly separate Content
from Presentation.

We could use PSP or Cheetah for the presentation.

1. I heard there is a way in PSP to pull out the templates from a database
and call the a method to execute it. How is this done?
Could I use a test-dir to test new templates, or versions or whatever?
How can I activate the PSP templates manually?
Is Cheetah more appropiate for this?

2. When creating a complex data structure, for example an order, where I
have to need several pages to pick up the data from the user (pick up
customer, articles, and other conditions), how should I procede to store the
information finally? Should I store all the data collected with sevaral
pages in the session until she completed the information (e.g. order) and
the last page would forward it to the database?
This would be that we have an 'OrderController' which activates (using the
workflow control) different pages to collect the information, but we have to
store it in the session object, because each request instantiates a new
instance of the 'OrderController' Servlet (class), right? The last page
would activate the 'save' method of the controller, and this would pull out
all info out of the session and send it to the database.

Up to how much data is reasonable to store in a session using a average good
machine (some PIV with 512MB RAM) with 20 users?

Thanx a lot,
Erny