General talk about software patterns

[Mark Grand <mgrand AT mindspring.com>]

Since you have said noting about the system, I assume that the purpose of 
the framework is more structural than functional. If that is a correct 
assumption, then answering this question should put you on the way to 
knowing what patterns to use:

What value is the framework supposed to add?  Or, in other words, In what 
ways are things expected to be better after you have added the framework?

At 09:43 PM 10/23/2004, Ralph Johnson wrote:
> On 10/23/04 1:39 AM, "Aswin D" 
> <win_ash12 AT yahoo.com>
>  wrote:
>
> > Hello,
> >        I have been asked to come up with a framework of the server side 
> layer
> > as part of a project. One of the requirements for creating this 
> framework is
> > that there should be minimal code changes to the users of the 
> framework. Are
> > there any design patterns/strategies that I can use as part of this 
> framework
> > ? There is already a codebase. My framework is really providing the 
> middleware
> > layer to access the database. The existing codebase that will use my 
> framework
> > will need to have minimal code changes.
>
> You haven't said anything about the system.  Probably there are patterns you
> can use, but there is no way to tell what they are with so little
> information.
>
> Perhaps your framework is the traditional object-relational mapping layer.
> There are a lot of these frameworks around, and you should use one instead
> of writing your own.
>
> There is no way to retrofit a framework into an existing project without
> changing a lot of code.  "Minimal change" will probably be a lot larger than
> your boss expects.
>
> -Ralph Johnson
>
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Mark Grand                           (404)925-8265