1. Observer PatternMediator Pattern 인공지능 연구실 변윤관

2. Observer Pattern VS Mediator Pattern • The Observer pattern: • Defines a one-to-many dependency between objects so that when one object changes state, all its dependents are notified and updated automatically. • The Mediator pattern: • Define an object that encapsulates how a set of objects interact. Mediator promotes loose coupling by keeping objects from referring to each other explicitly, and it lets you vary their interaction independently.

3. Observer Pattern Structure

4. Observer Pattern Class Diagram

5. Observer Pattern Sequence Diagram

6. Subject(Observable) Interface

7. Subject Implement 옵저버리스트에 있는 모든 옵저버에게 update() 메소드 콜

8. Observer Interface

9. Observer Implement

10. Observer Test 서브젝트를 관찰할 옵저버 등록 서브젝트의 내용이 바뀌어서 옵저버에게 notify

11. Mediator Pattern Structure

12. 경보발령시스템 receiver1 경보메시지 경보메시지 경보메시지 receiver2 alerter gateway 경보메시지 receiverN

13. Mediator Pattern Class Diagram

14. Mediator Pattern Sequence Diagram

15. Mediator Pattern Sequence Diagram