Question

I’ve created very basic aspectJ project. I have no idea why advice cannot be applied.

annotation

import java.lang.annotation.*;

@Retention(RetentionPolicy.RUNTIME)  
@Target(ElementType.METHOD)  
@Documented  
public @interface Conditional {  
    String value();  
}  

and aspectJ class:

@Aspect
public class AspectE {

    @Around("call(@Conditional * *.*(..)) && @annotation(conditional)" )
    public Object condition(ProceedingJoinPoint joinPoint, Conditional conditional) throws Throwable {

        System.out.println("entry point says hello!");
        return joinPoint.proceed();
    }
}

main:

public class Main {

    @Conditional("")
    public static void main(String[] args) {
        System.out.println("main good morning");
    }
}

Could you please tell me what I should change to receive both messages?

Answer 1

I think it is because of the call(@Conditional * *.*(..)) which basically weaves the callers , the caller in this specific case is the command line and so there is no weaving happening.

You should probably change it to execution instead, that should work.

@Around("execution(@Conditional * *.*(..)) && @annotation(conditional)" )