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Re: [Qemu-devel] [PATCH RFC 1/7] qom: allow properties to be registered


From: Markus Armbruster
Subject: Re: [Qemu-devel] [PATCH RFC 1/7] qom: allow properties to be registered against classes
Date: Thu, 03 Sep 2015 19:02:25 +0200
User-agent: Gnus/5.13 (Gnus v5.13) Emacs/24.5 (gnu/linux)

Andreas Färber <address@hidden> writes:

> Am 03.09.2015 um 18:37 schrieb Markus Armbruster:
>> "Daniel P. Berrange" <address@hidden> writes:
>>> On Wed, Sep 02, 2015 at 06:18:28PM +0200, Andreas Färber wrote:
>>>> I had suggested exactly this looong time ago, but Anthony opposed it. I
>>>> don't quite remember why...
>>>
>>> It is a while back now so I don't remember all aspects of the discussion
>>> either. The main thing I remember is that we could not simply use the
>>> existing GObject model from glib, since that exclusively records properties
>>> against the object class. In some cases, particularly the relationships
>>> between objects, QEMU needed to be able to define properties on the fly
>>> against object instances.
>> 
>> I remember Anthony's assertion that this is the case, but I don't
>> remember the actual problems where this is actually the case.
>> 
>> What properties do we currently define that could not be defined against
>> the class?
>
> All child<> properties and everything on Container objects.

Apologies if you had to explain this a dozen times already, but here
goes my ignorant question anyway: why can't these properties be defined
against the class?



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