[Zope-dev] multiple monkeypatches

[Adrian Hungate]

PatchKit handles this for you (If you ask it to).

:)

Adrian...

--
Adrian Hungate
EMail: adrian@haqa.co.uk
Web: http://www.haqa.co.uk

Computers are like air conditioners
    -- they stop working properly if you open WINDOWS
----- Original Message ----- 
From: "Florent Guillaume" <fg@nuxeo.com>
Newsgroups: local.lists.zope.zope-dev
To: <zope-dev@zope.org>
Sent: Wednesday, June 05, 2002 6:15 PM
Subject: Re: [Zope-dev] multiple monkeypatches


> Jim Penny  <jpenny@universal-fasteners.com> wrote:
> > Is there a safe way to handle multiple monkeypatches?
> 
> Without an existing framework (I haven't looked at Adrian's PatchKit),
> it's the same old problem as "intercepting interrupts" on good old 8-bit
> computers. You just have to save and call the previous one.
> 
> What I do is this:
> 
> # 1. define my method
> def manage_main(...):
>     # ...
>     ...
>     res = self._myproduct_old_manage_main(...)
>     ...
>     return res
> # 2. put the old version in a private variable
> ObjectManager._myproduct_old_manage_main = ObjectManager.manage_main
> # 3. patch
> ObjectManager.manage_main = manage_main
> 
> If you want to play nice with refresh, you have to be a bit more
> careful, because then you don't want to do step 2. A simple test for
> absence of the _myproduct_old_manage_main attribute before doing it is
> enough.
> 
> Florent
> 
> -- 
> Florent Guillaume, Nuxeo (Paris, France)
> +33 1 40 33 79 87  http://nuxeo.com  mailto:fg@nuxeo.com
> 
> 
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