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Date: Tue, 16 May 2006 13:05:25 +0200
From: Reinhard Poetz <reinhard@apache.org>
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To: dev@cocoon.apache.org
Subject: Re: [2.2] Configuration issues
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Carsten Ziegeler wrote:
> Reinhard Poetz wrote:
> 
>>>How does OSGi solve this?
>>
>>Since OSGi4 declarative services are supported. Think of Spring dependency 
>>injection but considering interface/implementation relations. You can use the 
>>OSGi configuratonAdmin service to change an injected component or a component's 
>>properties.
> 
> Ok, but this is then configuration at runtime and not at development
> time, right? Where are those values stored?

I will let you know as soon as I have time to work on this again (postponed it 
in favor of the 2.2beta1 release)


>>Additionally we have the possibility to redisgn e.g. forms and portal to use the 
>>OSGi whiteboard pattern[1]. Using it makes extending them very simple as it 
>>makes extensions very simple - you just have to provide a component that 
>>implements a particular interface and it is automatically added as reference to 
>>another component.
>>
> 
> I don't want to rewrite blocks in order to use OSGi and I think one of
> our main goals for using OSGi is that this does not affect the way how I
> develop blocks which means it is totally transparent. So imho we need an
> OSGi-free way which works at development time.

You *can* use the mechanisms I explained but you *don't have to*. If you want to 
benefit from from *particular* advantages that OSGi brings, you have to do 
something.

-- 
Reinhard P�tz           Independent Consultant, Trainer & (IT)-Coach 

{Software Engineering, Open Source, Web Applications, Apache Cocoon}

                                        web(log): http://www.poetz.cc
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