From: "Eduardo Yáñez Parareda" <eduardo.yanez@...>
Date: 2005-07-06T00:35:40+09:00
Subject: Re: A matter of style.

> It will have 2 main objects ; an input file and a schema.   

You need to ask yourself which of each classes are responsible for
'extract'. If neither 'file' nor
'schema' are responsible for it, then you need a third class.

if a file is owner of an schema then you could ask for him to extract
the schema.