Creating default pointcut spring aop

Question

While to utilise the AOP to authorize request in my controllers, I used the approach that

there is default validation and specfic validation, so that the request for which I don't have specfic pointcut defined they are authorized by the default approach.

 @Before("execution(* com.example.controller.ExampleController.*(..))")
  public void validate() {
    validatePermissions("user", "create");
  }

 @Before("execution(* com.example.controller.*.*(..))")
  public void validateUser() {
    validatePermissions("admin", "admin");
  }

Problem is that even though I have specfic validation defined for User case Its even in case of request to my Example controller request is always going to default one.

what I want is that only request not already covered by other pointcut should go to the default pointcut

Answer 1

You would make the specific pointcut(s) reusable and reference them in && !specificPointcut() conditions, roughly like this (untested, just written in the browser):

@Pointcut("execution(* com.example.controller.ExampleController.*(..))")
public void specificPointcut() {}

@Before("specificPointcut()")
public void validate() {
  validatePermissions("user", "create");
}

@Before("execution(* com.example.controller.*.*(..)) && !specificPointcut()")
public void validateUser() {
  validatePermissions("admin", "admin");
}

You can easily extend that to multiple specific pointcuts, either serially or hierarchically, depending on your situation.

Serially excluding pointcuts would work like && !(specificPc1() || specificPc2()) and hierarchically by a more common level always excluding the next more specific one.