Replace Method Code about byte-buddy

[raphw]

In advice, you can skip the original code. Look at: OnMethodEnter(skipOn = ...).

A common way of doing this is:

class MyAdvice {
  @Advice.OnMethodEnter(skipOn = Advice.NonDefaultValue.class)
  static boolean onEnter(@Advice.Local Object returnValue) {
    if (...) {
      // do alternative
      returnValue = ...;
      return true;
     } else {
       return false;
     }
  }

  @Advice.OnMethodExit
   static void exit(@Advice.Enter boolean skipped, @Advice.Local Object returnValue, @Advice.Return Object returnedValue) {
     if (skipped) {
       returnedValue = returnValue;
     }
   }
}

[rupinder10]

Advice.NonDefaultValue.class

This worked. Thanks @raphw. I do have a question about what exactly does this mean ?

skipOn = Advice.NonDefaultValue.class

[raphw]

The default value is null, false or 0. It means that if this default value is returned, the method is not skipped, in this case. It's also explained in the javadoc.