Re: [aspectj-users] Method & constructor validation pointcuts

[Matthew Adams <matthew@xxxxxxxxxxxxxxx>]

Ok, I need another pair of eyeballs again.  I'm refining my earlier pointcuts
one baby step at a time.  Now, instead of restricting validation annotations
to "javax.validation.constraints..*", I want to allow for any @Constraint
annotation, which really means any annotation annotated with @Constraint. 
For example, for my own @NotEmpty (simple test annotation to test for null
or empty String):

========================
import java.lang.annotation.ElementType;
import java.lang.annotation.Retention;
import java.lang.annotation.RetentionPolicy;
import java.lang.annotation.Target;

import javax.validation.Constraint;
import javax.validation.constraints.NotNull;
import javax.validation.constraints.Size;

@NotNull
@Size(min = 1)
@Constraint(validatedBy = {})
@Retention(RetentionPolicy.SOURCE)
@Target({ ElementType.FIELD, ElementType.PARAMETER })
public @interface NotEmpty {}
========================

I tried the following, but they only match constraint annotations whose
package is "javax.validation.constraints":

	pointcut executingValidatedConstructorParameters() :
		execution(*.new(.., @(@javax.validation.Constraint *) (*), ..));

	pointcut executingValidatedReturnValue() :
		execution(@(@javax.validation.Constraint *) !static !void *(..));

	pointcut executingValidatedMethodParameters() :
		execution(!static * *(.., @(@javax.validation.Constraint *) (*), ..));

I just saw this thread saying it's not supported, posted Dec 2010: 
http://forum.springsource.org/showthread.php?99738-Pointcut-to-match-meta-annotations&p=334966#post334966

Is it still not supported?  If not, then I'm surprised that the above
aspects are even partially working.

Ideally, I'd like to support meta-annnotations, meta-meta-annotations, etc.,
generally.  Is that possible?

-matthew



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