I've used Joe's tool a little bit ;-) so here is my comment regarding
the drawbacks:
Imho the tricky issue is the configuration of BlablaAware plug point for
a component. There's a components.xml file for them:
> <component>
> <class>org.blabla.cart.DefaultCart</class>
> <enabler>org.blabla.cart.CartAware</enabler>
> <scope>session</scope>
> </component>
Imho for a general purpose framework like webwork we need other options
too.
- a Foo.component.xml setup file for a single component, unlike
components.xml which is for all components.
- we need an abstract Configurer interface, an XmlConfigurer would use
the xml files. A DynamicConfigurer could hijack the request and do
whatever it wants.
- In the component.xml file we should be careful about a lot of details:
- ordering and decoration of enablers/components
- passing parameters to enblers, maybe a nested <param/> element
- and so on
- we can use @attributes (as Joe already suggested us):
/** @component scope=session */
public class DefaultSomething implements Something {
/** @dependency */
public void setPersistenceManager(PersistenceManager pm) { ... }
My point is that you should have full control over the dependency
configuration part, in other words you should be able to take control of
the container for different needs.
Ara.
> -----Original Message-----
> From: [EMAIL PROTECTED]
> [mailto:[EMAIL PROTECTED] On Behalf Of
> Rickard �berg
> Sent: Friday, March 07, 2003 1:37 AM
> To: [EMAIL PROTECTED]
> Subject: Re: [OS-webwork] IoC Mini Tutorial [Was: ParameterAware
> deprecation]
>
> Patrick Lightbody wrote:
> >>What are the drawbacks of this approach?
> >>
> >>/Rickard
> >
> > Not too many... I suppose the NPE problem could crop up.. It also
makes
> your
> > design a bit unclear to novices ("Where'd the Connection come
from?"),
> but
> > these are pretty minor.
>
> Are there really no other drawbacks you can think of? Please try a
> little harder.
>
> I can think of quite a few, but as I said, I wanted to get your view
> first.
>
> /Rickard
>
>
>
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