package com.thereisnospon.spring.demo.course.imp.c004_aop;

import org.aspectj.lang.annotation.Aspect;
import org.aspectj.lang.annotation.DeclareParents;
import org.springframework.context.ApplicationContext;
import org.springframework.context.annotation.AnnotationConfigApplicationContext;
import org.springframework.context.annotation.Bean;
import
 
 org.springframework.context.annotation.Configuration;
import org.springframework.context.annotation.EnableAspectJAutoProxy;


/**
 * 引介增強
 */
public class T004_Aop_declare {

    public static class BookService {
        public void query() {
            System.out.println("query");
        }
    }

    public
 
 interface ILog {
        void log();
    }

    public static class LogImpl implements ILog {
        @Override
        public void log() {
            System.out.println("log");
        }
    }

    @Aspect
    public static class MyAspect {
        @DeclareParents(value = "com.thereisnospon.spring.demo.course.imp.c004_aop.T004_Aop_declare.BookService"
 

                , defaultImpl = LogImpl.class
        )
        public ILog iLog;
    }


    @Configuration
    @EnableAspectJAutoProxy(proxyTargetClass = true)
    public static class Config {

        @Bean
        public MyAspect myAspect() {
            return new MyAspect();
        }

        @Bean
        LogImpl log() {
            return new LogImpl();
        }

        @Bean
        BookService bookService() {
            return new BookService();
        }
    }

    public static void main(String[] args) {
        ApplicationContext context = new AnnotationConfigApplicationContext(Config.class);
        BookService bookService = (BookService) context.getBean("bookService");
        bookService.query();
        ((ILog) bookService).log();
    }
}