Passing and using properties through annotations in Java

Question

I have a Java EE Application in which I have an Interceptor class like this

@Interceptor
@Logged
public class LogInterceptor {

@AroundInvoke
    public Object logMethod(InvocationContext context) throws Exception {
      ...
    }
}

Now when I want it to work I annotate the target method with @Logged. Please correct me if my perception of this is wrong.

Now to the question.

Is it possible to pass/bind a variable (and when, how?) throught the annotation like so:

@Logged(ctx = methodContext)
public void someMethod(MethodContext methodContext) {
   ...
}

and then a use it in LogInterceptor.logMethod() ?

Or are there other options to accomplish this?

Answer 1

The values of annotation parameters must be compile-time constants, so you cannot "pass a variable" this way. But how should this even work? Where would methodContext be defined and who would be responsible for setting the value? You are, however, free to pass compile-time constants, so for example:

@Logged(loggerName = "MY_LOGGER")
public void ...

is completely fine.