[aspectj-users] problem with declare annotation

[Ashley Williams <ashley.williams@xxxxxx>]

Hi,

I'm trying to write a simple tracing
annotation but have problems declaring it against a type due to compile
errors. Basically I get the error depending on which combination of @Target
annotation attributes I specify. For example TYPE and CONSTRUCTOR work
together but not TYPE and METHOD as shown below. I would eventually like
to apply the Tracing annotation to all ElementTypes.

1. The pojo I would like to declare
the annotations against

public class MyPojo {
        public
static void calculate() {
        }
}


2. The annotation I would like to apply
is as follows:

@Retention(RetentionPolicy.RUNTIME)
@Target( { ElementType.TYPE, ElementType.METHOD})
public @interface Tracing {
        LoggingLevel
level() default LoggingLevel.DEBUG;
}


3. The aspect that applies the annotation
to MyPojo and MyPojo.calculate()

public aspect ConfigureTracing {
        declare
@type : MyPojo : @Tracing(level = LoggingLevel.DEBUG); // compile error!!!
        declare
@method : * MyPojo.calculate() : @TestAnnotation;
}


4. Here is the LoggingLevel enumeration
I wrote, since I couldn't find one in log4j:

public enum LoggingLevel {
        ALL(Level.ALL),
DEBUG(Level.DEBUG), ERROR(Level.ERROR), FATAL(Level.FATAL), INFO(
         
              Level.INFO),
OFF(Level.OFF), WARN(Level.WARN);
        private
final Level level;
        private
LoggingLevel(Level level) {
         
      this.level = level;
        }
        public
Level getLevel() {
         
      return level;
        }
}

However when I compile it using aspectj
tools 1.5.3 I get the following error message: "[ERROR] DEBUG cannot
be resolved", which refers to my LoggingLevel.DEBUG enum constant.
Could it be some sort of class loader issue where only some of my enumeration
constants aren't yet available?

As a bonus question, I would like to
specify something like the ConfigureTracing aspect above in an aop.xml
file for runtime weaving, this way I don't have to hard code the annotations
at build time. However in the docs for aop.xml I couldn't find any way
to declare annotations, so is there some other strategy I can use to achive
this?

Thanks for any help
- Ashley
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