AOP test - 1

1. interface를 만들어 보자.
public interface Hello { String sayHello(String name); String sayHi(String name); String sayThankYou(String name); }
2. interface를 구현한 클래스를 만들어 보자.
public class HelloTarget implements Hello { @Override public String sayHello(String name) { return "Hello " + name; } @Override public String sayHi(String name) { return "Hi " + name; } @Override public String sayThankYou(String name) { return "Thank You " + name; } }
3. 테스트를 해보면....
@Test public void simpleProxy() throws Exception { Hello hello = new HelloTarget(); assertThat(hello.sayHello(name), is("Hello Tazz")); assertThat(hello.sayHi(name), is("Hi Tazz")); assertThat(hello.sayThankYou(name), is("Thank You Tazz")); }
4. 아주 간단한 클래스인데 여기에 대문자로 출력하도록 바꾸려면 구현한 넘을 다르게 만들어야 한다.
public class HelloUppercase implements Hello { Hello hello; public HelloUppercase(Hello hello) { this.hello = hello; } @Override public String sayHello(String name) { return hello.sayHello(name).toUpperCase(); } @Override public String sayHi(String name) { return hello.sayHi(name).toUpperCase(); } @Override public String sayThankYou(String name) { return hello.sayThankYou(name).toUpperCase(); } } @Test public void simpleProxy() throws Exception { Hello hello = new HelloTarget(); assertThat(hello.sayHello(name), is("Hello Tazz")); assertThat(hello.sayHi(name), is("Hi Tazz")); assertThat(hello.sayThankYou(name), is("Thank You Tazz")); Hello proxiedHello = new HelloUppercase(new HelloTarget()); assertThat(proxiedHello.sayHello(name), is("HELLO TAZZ")); assertThat(proxiedHello.sayHi(name), is("HI TAZZ")); assertThat(proxiedHello.sayThankYou(name), is("THANK YOU TAZZ")); }
이런 방법으로 변경하면 메소드가 추가되면 작업량이 안습...
좋은 방법은 다음 단계로...
토비의 스프링 3.0 으로 공부 중입니다.