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From Paul Hammant <Paul_Hamm...@yahoo.com>
Subject Re: [Mailet API] Logging Proposal
Date Tue, 11 Jun 2002 21:18:59 GMT
Darrell,

Well put.  Not sure whether you're in favour of mymidon or not.

On the issue of subset, I'm going to move on to A-F's Initializable 
interface instead of the current init() (as per previous emails of mine).

- ph

>On Tue, 11 Jun 2002 15:38, Noel J. Bergman wrote:
>  
>
>>Now you just need to convince people with voting rights.  ;-)
>>
>>	--- Noel
>>    
>>
>
>Ummm, I'd be one of those I guess, although I'd be extremely reluctant to use 
>it, since I've been off in Myrmidon (Ant2 proposal) for some time.
>
>I read this thread with interest, and I have a few comments.
>
>* I pretty much agree with Danny and Serge that the Mailet API itself 
>shouldn't have any direct dependencies on the Avalon Framework, if possible.
>
>* Any Mailet written solely against the Mailet API will function perfectly in 
>James, the Reference implementation of a Mailet container.
>
>* This doesn't mean that a particular Mailet shouldn't be able to use Avalon 
>Framework interfaces, in a container that supports those interfaces. eg 
>LogEnabled: I think that LogEnabled provides a clean, implementation neutral 
>way of getting a Logger from the Mailet container, but some mailets may 
>choose other ways. However, in using LogEnabled the Mailet author is saying:
>     "this mailet can be used in any container which supports both the Mailet 
>API and the Avalon LogEnabled contract".
>
>* I believe that James should provide support for a relevant subset of Avalon 
>contracts, maybe just LogEnabled, or any others that seem very useful. This 
>would be value-added behaviour of James the Mailet container, providing 
>additional services (beyond the Mailet API) to any hosted Mailets. 
>
>* If a Mailet writer wants their *LogEnabled* Mailet to work in a 
>non-avalonized container, they would need to ensure that they provide a 
>default Logger themselves in the case that "enableLogging(Logger logger)" 
>isn't called.
>
>* The big question is whether the core James mailets use LogEnabled. I say 
>"why not?". After all, these are just mailet implementations, and not part of 
>the MailetAPI itself. Maybe we can provide an adapter which can be used to 
>run LogEnabled Mailets in non-avalonized containers, but I wouldn't be 
>surprised if *all* Mailet containers end up supporting LogEnabled directly. 
>
>I guess the main point is that we can have the Mailet API completely 
>independent of Avalon-Framework, yet still *support* Avalon-Framework 
>contracts in James, the Mailet Container. This keeps the Mailet API clean, 
>and hopefully future-resistant, while allowing us to reuse some of the 
>concepts and strategies which have proven so useful in Avalon.
>
>  
>





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