Configuring Proxy Object in Ini File

[Cemo]

Hi,

I am trying to injecting some of highly difficult objects in my Ini file.
 For realm and session manager I would like to use custom proxy instances
based on Interfaces.

I am programmatically registering as this:

      addServletListeners(new EnvironmentLoaderListener());

Is there a way to register some beans before
my EnvironmentLoaderListener initialising?

Thanks