ComposablePointcut Intersection : Pointcut « Spring « Java Tutorial

1. Java Tutorial
2. Spring
3. Pointcut

File: Main.java

import java.lang.reflect.Method;

import org.springframework.aop.Advisor;
import org.springframework.aop.ClassFilter;
import org.springframework.aop.MethodBeforeAdvice;
import org.springframework.aop.framework.ProxyFactory;
import org.springframework.aop.support.ComposablePointcut;
import org.springframework.aop.support.DefaultPointcutAdvisor;
import org.springframework.aop.support.StaticMethodMatcher;

public class Main {
  public static void main(String[] args) {
    SampleBean target = new SampleBean();

    ComposablePointcut pc = new ComposablePointcut(ClassFilter.TRUE, new GetterMethodMatcher());


    pc.intersection(new GetAgeMethodMatcher());
    SampleBean proxy = getProxy(pc, target);
    testInvoke(proxy);    
  }

  private static SampleBean getProxy(ComposablePointcut pc, SampleBean target) {
    Advisor advisor = new DefaultPointcutAdvisor(pc, new SimpleBeforeAdvice());

    ProxyFactory pf = new ProxyFactory();
    pf.setTarget(target);
    pf.addAdvisor(advisor);

    return (SampleBean) pf.getProxy();
  }

  private static void testInvoke(SampleBean proxy) {
    proxy.getAge();
    proxy.getName();
    proxy.setName("QQQ");
  }
}

class GetterMethodMatcher extends StaticMethodMatcher {

  public boolean matches(Method method, Class cls) {
    return (method.getName().startsWith("get"));
  }
}


class GetAgeMethodMatcher extends StaticMethodMatcher {
  public boolean matches(Method method, Class cls) {
    return "getAge".equals(method.getName());
  }
}
class SampleBean {

  public String getName() {
    return "AAA";
  }

  public void setName(String name) {

  }

  public int getAge() {
    return 100;
  }
}

class SimpleBeforeAdvice implements MethodBeforeAdvice {
  public void before(Method method, Object[] args, Object target) throws Throwable {
    System.out.println("Before method " + method);
  }
}

28.56.Pointcut
	28.56.1.	Default Pointcut Advisor
	28.56.2.	Control Flow Pointcut
	28.56.3.	ComposablePointcut Union
	28.56.4.	ComposablePointcut Intersection
	28.56.5.	Class Filter In DynamicMethodMatcherPointcut
	28.56.6.	NameMatchMethodPointcutAdvisor
	28.56.7.	NameMatchMethodPointcut
	28.56.8.	Jdk Regexp based Method Pointcut
	28.56.9.	All Kinds Of Pointcut