From: Anders Bengtsson <ndrsbngtssn@...>
Date: 2004-04-04T05:08:39+09:00
Subject: Re: Madeline - avoiding Command objects by 'Delegate'?

Its Me wrote:

> What is the recommended way to deal with changes to schema / object
> structure? I recall seeing this discussed a long time ago on Prevalence but
> am interested in the Ruby best practice.

Ruby's marshalling of instance variables is more flexible than in Java,
so new, changed or removed fields should be less trouble in Ruby.
We can unmarshal instances of a class even if we only have an empty
class declaration for it, which should make upgrade-scripts easier to
write.
Other than that, I think it's the same issues as when doing object
prevalence in Java.

/Anders