java - How to configure aspectj ignore getters and setters

Question

I have an aspect that currently works to capture all public method executions within my package.

I would like to modify that to exclude both setters and getters, so I tried that and these are the variants I tried:

This one works, but does obviously does not do anything for setters or getters.

@Around("execution(public * *(..)) && !within(com.walterjwhite.logging..*)")

This does not compile:

@Around("execution(public * *(..)) && !within(* set*(..))")

This compiles, but doesn't prevent capturing setters/getters:

@Around("execution(public * *(..)) && !execution(* set*(..))")

I also came across this post as a reference, but that didn't work. I get compilation errors when trying to compile the aspect.

How can I exclude getters and setters in aspectJ?

Answer 1

The second one does not compile because within() needs a type signature, not a method signature. The answer you are referring to is just plain wrong, I have no idea why it was accepted. I just wrote a new one in order to correct that false information.

Your last try is basically right, but only ignores setters, not getters. Try this:

Driver application:

package de.scrum_master.app;

public class Application {
  private int id;
  private String name;

  public int getId() {
    return id;
  }
  public void setId(int id) {
    this.id = id;
  }
  public String getName() {
    return name;
  }

  public void setName(String name) {
    this.name = name;
  }

  public void doSomething() {
    System.out.println("Doing something");
  }

  public static void main(String[] args) {
    Application application = new Application();
    application.setId(11);
    application.setName("John Doe");
    application.doSomething();
    System.out.println(application.getId() + " - " + application.getName());
  }
}

Aspect:

package de.scrum_master.aspect;

import org.aspectj.lang.ProceedingJoinPoint;
import org.aspectj.lang.annotation.Around;
import org.aspectj.lang.annotation.Aspect;

@Aspect
public class MyAspect {
  @Around("execution(public * *(..)) && !execution(void set*(*)) && !execution(!void get*())")
  public Object myAdvice(ProceedingJoinPoint thisJoinPoint) throws Throwable {
    System.out.println(thisJoinPoint);
    return thisJoinPoint.proceed();
  }
}

Console log:

execution(void de.scrum_master.app.Application.main(String[]))
execution(void de.scrum_master.app.Application.doSomething())
Doing something
11 - John Doe

Please note that

• if you have getters for boolean values like isActive() and also want to ignore them, you have to extend the pointcut by && !execution(boolean is*()).
• those kinds of pointcuts with name patterns are always just heuristics, so beware of method names such as getaway, settleConflict, isolate. They would also be ignored.