avalon-dev mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From Leo Simons <leosim...@apache.org>
Subject Re: [RT] Component Types
Date Mon, 26 Jan 2004 21:57:50 GMT
Leo Sutic wrote:
> +0.1 I ***hate*** client-side validation of container contracts.

yup. You're thinking of the TransientFactory as provided by the 
container. If you see it as provided as a component (defendable in the 
way I'm implementing my "container"), it is not quite container-side. 
But still ugly. Note it's optional here, too (client is not required to 
call provides()).

> +0.5 I ***hate*** client-side validation of container contracts, but
> at least it is optional here.

yup. I just hate pooling :D. Does anyone know of any programming 
language or framework or application where it is less ugly?

>>Then there's the option of seperating out the validation into 
>>[A, B, C]
> Or you could ram it into the container. (Probably the best option.)

yeah, using technique A or B or C. But you'll still have to do at least 
some manual configuration. It all remains relatively ugly.

>>did you ever get the metadata for an argument-by-name association 
>>working properly?
> What? Like the example above? Sure.

yep. Is it in commons-attributes? I'd like to see how you made it 
happen...I made the choice not to use attributes 'till 1.5, but I'm 
still interested how for things can be streched....practical magic is a 
hobby of mine :D

>      * @@.return MyAttribute ()

do you have use case for that as well? Can't think of any.

> (In terms of magic, the org.apache.commons.attributes package is
> the equivalent of an industrial-grade high-pressure mana fountain.


>>>This is one for A5 definitely
>>why? It's not backwards-incompatible :D
> It is, since a lookup() of a pooled component will give you a
> factory instead of the component itself.

that makes it incompatible with ECM/fortress (where lookup has accepted 
semantic meaning). But I don't see it as incompatible with merlin or 
phoenix, or the core framework. See the factory as a lightweight 
container-provided component, wrapping an assembler-provided component.

I think I'll have a go at implementing it.


- Leo Simons

Weblog              -- http://leosimons.com/
IoC Component Glue  -- http://jicarilla.org/
Articles & Opinions -- http://articles.leosimons.com/
"We started off trying to set up a small anarchist community, but
  people wouldn't obey the rules."
                                                         -- Alan Bennett

To unsubscribe, e-mail: dev-unsubscribe@avalon.apache.org
For additional commands, e-mail: dev-help@avalon.apache.org

View raw message