@Before with target does no work?

[davidshen84]

Hi,

Let's say my code looks like this:

public interface myInterface{
void method1();
}

public class myClass implements myInterface{...}

Now I want to use AOP to inject the myInterface.method1.

@Aspect
public class myAspect{
@Pointcut("execution(* myInterface.method1(..)) && target(t)")
private void myPointcut(myInterface t){}

@Before("myPointcut(t)")
public void myBefore(myInterface t){...}
}

Above code never works. But if I change "@Before" to "@Around", and modify the signature, it works fine.

The reason I need the "target" is that I want to modify the target object before the method invoking. I am new to AOP. I am not even sure if it is a valid use case.

[rohan123]

try like this


@Before("execution(* ..Sample+.sampleGenericMethod(*))")

[davidshen84]

Can you please give a complete example? I still cannot figure out how to pass the target object the my function.

Thanks.

[rohan123]

@Before("execution(* ..Sample+.sampleGenericMethod(*)) && target(t)")

or


@Before("target(com.xyz.service.AccountService )")public void audit(JoinPoint jp) { AuditCode code = auditable.value(); // ... use jp to get target}

[Enrico Pizzi]

From what I know with @Before you can execute code before the advised method is executed but you can't change the data that is passed to the advised method. I'd use @Around for that.