Hi Guys,

Can anyone tell me what is wrong with this approach below? I was hoping I could utilize CDI to easily implement a factory for instansiating 'Widget' objects. They have mixed sizes and styles e.t.c. which currently use qualifiers (and should possibly not?).

Example:

Without style or sizing...

@Inject

Widget w;

or, with implicit sizing

@Inject

@Size(height="100px",width="100px")

Widget someWidget;

or with full sizing

@Inject

@SizeFull

Widget someWidget;

or with style and full sizing

@Inject

@Style(name="pretty", border=true)

@SizeFull

Widget someWidget;

or with style only

@Inject

@Style(name="pretty", border=true)

Widget someWidget;

The only unique rule not shown above is that you can not have BOTH  @SizeFull and @Size qualifiers on an injection point.

The following should be ILLEGAL!

@Inject

@Size(height="100px",width="100px")

@SizeFull

Widget someWidget;

It doesn't seem feasible to create multiple @Produces to handle each unique injection point, there's just too many to be sensible.

I have looked at stereotypes, but I consistent get the error "Cannot declare qualifiers on stereotype interface" for which I have no explaination. I also don't see how a @Stereotype could be linked with a @Producer, can it? Also, I dont see examples where stereotypes have field/attribute values like qualifiers can, can they?

@Stereotype

@Target({ METHOD, FIELD, PARAMETER, TYPE })

@Retention(RUNTIME)

@Style

@Size

@SizeFull

public @interface WidgetConfig {

  String something();  //is this valid????? and can it be @Nonbinding???

}

Cheers

--AH