RE: Business Logic Servers ( was: MVC in RPG?)

["DeLong, Eric" <EDeLong@xxxxxxxxxxxxxxx>]

The error handling business is what could most influence the business logic design, but I agree that it's the communications interface that needs to map whatever is used in the BL to what's used in the transport.  

Eric

-----Original Message-----
From: rpg400-l-bounces@xxxxxxxxxxxx
[mailto:rpg400-l-bounces@xxxxxxxxxxxx]On Behalf Of matt.haas@xxxxxxxxxxx
Sent: Thursday, October 04, 2007 3:54 PM
To: rpg400-l@xxxxxxxxxxxx
Subject: RE: Business Logic Servers ( was: MVC in RPG?)


<snip>
The design of the business logic depends somewhat on your preference for
communcations...
</snip>

It shouldn't. The whole idea behind the business layer is that it is use
agnostic (i.e. same logic can be used from another native program call
for a screen, as a stored procedure, called by a web app, or a web
service). Communications should be handled at a layer above the business
object and this is where you will get into separate programs (perhaps in
several different languages) for each way the server programs are used.

I do agree that error handling is very important and ideally, all of the
individual servers would report errors in the same way.

Matt