Rails source code architecture

Hello, I am a software engineering PhD student. I am currently performing and empirical study in which I am studing software metrics on the Rails project. I am analyzing the code of Rails 2.3 for this study.

I need your help because for this study I need to split the source code in several modules, considering that a module is a file, a set of files, a directory or a set of directories containing a standalone piece of code that provides specific and tightly coupled functionalities.

Given this definition and the architecture of Rails 2.3, what would be the modules for you?

The source code tree of Rails 2.3 is described here: https://gist.github.com/matthieu-foucault/0bf58ab46e2011a10841

Why You Use Version 2.3 not 4.1, 2.3 is obsolete, 4.1 is newer.

You may want to do some research on the 2.3 -> 3.0 transition and the merge with Merb; the explicit motivation for that process was to split the code into better-separated modules. 2.3 was not straightforward to divvy up in that fashion.

–Matt Jones