From: Eivind Eklund <eeklund@...>
Date: 2007-11-23T17:50:20+09:00
Subject: Re: calling my framework

On Nov 22, 2007 2:12 PM, Mario Ruiz <mario@betware.com> wrote:
> I'm developing a framework but I would like to call the classes as I was
> in Java.
> An example:
> requiere 'myAclasses'
> requiere 'myBclasses'
> vA=myclass22.new()
> vB=myclass55.new()
>
> The problem is that I don't know where are these classes and I would
> like to call them something like this:
> vA=myAclasses.myclass22.new()
> vB=myBclasses.myclass55.new()
>
> Is this possible???
> How can I do it?

Note that true class names has to start with an uppercase letter; I've
compensated for that below.

First, you can do module wrapping (namespacing):

module MyAclasses
  class Myclass22
  end
end

and call as
MyAclasses::Myclass22.new

Second, you could do this using a method that returns a class object.

In other words, something like

class MyAClassContainer
   def myclass22
       return MyClass22
  end
end
myAclasses = MyAClassContainer.new # (or any other factory method)
mya = myAclasses.myclass22.new

The latter technique can be useful if your hierarchy and what you want
to produce change at runtime.  It seems like very many levels of
indirection, though, so I would think carefully of whether it is
necessary.  (Each level of indirection tends to make things harder to
grasp/think about/debug.)

Eivind.