Right now I am using java.util.logging
to log the entry and exit points of each method in my Java project. This is very useful to me when debugging.
I have this piece of code at the beginning of each method and a similar one at the end:
if (logger.isLoggable(Level.FINER)) { logger.entering(this.getClass().getName(), "methodName"); }
Where "methodName" is the the name of the method (hardcoded).
So I was wondering if there is a way to do this automatically without having to include this code in every method.
I suggest the use of Aspect Oriented Programming.
For example, using the AspectJ compiler (which can be integrated to Eclipse, Emacs and others IDEs), you can create a piece of code like this one:
aspect AspectExample { before() : execution(* Point.*(..)) { logger.entering(thisJoinPointStaticPart.getSignature().getName(), thisJoinPointStaticPart.getSignature().getDeclaringType() ); } after() : execution(* Point.*(..)) { logger.exiting(thisJoinPointStaticPart.getSignature().getName() , thisJoinPointStaticPart.getSignature().getDeclaringType() ); } }
This aspect adds a logging code after and before the execution of all methods in the class "Point".
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