On Mon, 3 Mar 2003 22:35, Schaible, J�rg wrote:
> currently I am somewhat puzzled about what implementing as service (a.k.a.
> component) and what not. In my application I have a tiny subset of a JNDI
> interface and wonder, whether I should implement the "TinyContext" and
> "TinyDirContext" as service or not. My current feeling (after the DaW "What
> is not a good component?") says no. The single element in such a DirContext
> scenario that cound be a service, seems to be the initial DirContext
> responsible using some kind of factory for the other elements.

Think of it another way. Services/Components are usually behaviour oriented. 
Data/Resources do not make good services/components - for every data/resource 
elemtn people usually have a coresponding factory/manager service. SO in your 
case you would have a "ContextManager" service that gave you access to the 
"Context" resource.

> Basically all services are installed during the initialization phase and I
> should normally not create new ones on the fly - right?

thats generally the idea. 

> Can I use the same role more than once, but use a different
> id and different attributes?

yes .. but I forget off hand how this is done in fortress .. sorry. Someone 
else?

-- 
Cheers,

Peter Donald
-------------------------------------------------------
To fight and conquer in all your battles is not supreme 
excellence; supreme excellence consists in breaking the 
enemy's resistance without fighting. - Sun Tzu, 300 B.C.
-------------------------------------------------------


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