From: Austin Ziegler <Austin.Ziegler@...>
Date: 2004-05-12T01:04:14+09:00
Subject: Re: versioned objects

rolo wrote:
> I am looking at versioning of objects. Objects comprise of 
> valuetype attributes, references to other objects and few 
> set/unset methods.
> Objects's attributes can change in value. Once their value is 
> changed, this is a new version. I should be able to go back 
> to last version (i.e.
> restore the previous attribute value.) In case the attributes 
> refers to some other versioned object( and like that for n 
> depth) I should be able to restore.
> 
> set/unset are specifics, where restore means calling unset method.
> 
> 
> What can be good strategies for implementing this.

You may want to check out Transaction::Simple to see if that covers your
needs. I have not yet had time to create a block form of
Transaction::Simple, but I will be doing so at some point. You can
probably do what you want with named transactions (names can be any
object except nil) so that you can revert to a particular version at any
given point in time.


-austin
--
austin ziegler * austin.ziegler@evault.com