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From "Carsten Ziegeler" <>
Subject RE: [Kernel22] How to develop a component?
Date Tue, 06 Apr 2004 07:04:30 GMT
Stefano Mazzocchi wrote:
> Carsten Ziegeler wrote:
> > I'm trying to figure out what the current kernel already 
> provides and 
> > what not.
> > 
> > Let's forget all the xml (descriptors etc) for a moment. Imagine I 
> > want to write a block, that provides - let's say a special file 
> > generator - that can be used in other blocks (in my app block).
> > 
> > Now, obviously this generator will implement our Cocoon 
> Generator interface.
> > What else does the kernel already provide for the component 
> lifecycle?
> > (Logging, Configuration etc.)
> > 
> > Or is this a to discuss/do?
> I guess it's a to-do/to-discuss.
> The block design didn't deal with component lifecycle because 
> that's another concern (and, originally, it was supposed to 
> be taken care of by avalon).

> I don't know Pier's ideas about this.
> I think it's a good time for cleaning up what avalon did 
> wrong, simplify as much as we can and tune it for our needs.
> But I'm wide open to suggestions, as long as we move away from avalon.
:) Sounds good to me. Now what do you think of using the things from
Avalon that are good (for us)? Now, I think, some of the interfaces
(for logging, contextualization, initialization) are good and we could
directly use them instead of building just a clone of them.
The only interface which could be better is Serviceable/Composable
where the lookup is done using a plain String. There we should use
something like lookup(Interface, Hint).



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