Re: [aspectj-users] Instanciate an aspect for each object with specific

[Ramnivas Laddad <ramnivas@xxxxxxxxxxxxxxx>]

I will probably use the following expression:

public aspect A perthis(this(@MyAnnotation *)) { ... }

I guess the following should work, too:
public aspect A perthis(@this(@MyAnnotation)) { ... }

(or if the syntax change per my email a few days back is accepted:
public aspect A perthis(@this(MyAnnotation)) { ... }
)

This will spare the nested and inner types defined within classes that carry @MyAnnotations.

Can you provide background of why you need per-instance association? In many cases, you are better of using inter-type declarations instead of perthis() and pertarget().

-Ramnivas

===

Ramnivas Laddad,
Author, AspectJ in Action
http://ramnivas.com


Rifflard Mickaël wrote:

> Hi all,
>
> I want to instanciate an aspect instance with each instance of an object with specific annotation.
>
> Exemple : 
>
> 	@MyAnnotation
> 	public class O { ... }
>
> 	public class Main {
>
> 		public static void main(String[] args) {
> 			new O();	=> New aspect instance
> 			new O();	=> New aspect instance
> 		}
> 	}
>
> To express this, I write
>
> 	public aspect A perthis(within(@MyAnnotation *)) { ... }
>
> This expression works but I wonder if this one is always the best with the addition of @this, @annotation , ...
>
> What do you think about it ?
>
> Regards,
>
> Mickaël Rifflard
> (Atos Origin)
>
>
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