Observer Pattern Mediator Pattern

Observer PatternMediator Pattern 인공지능 연구실 변윤관

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.

Observer Pattern Structure

Observer Pattern Class Diagram

Observer Pattern Sequence Diagram

Subject(Observable) Interface

Subject Implement 옵저버리스트에 있는 모든 옵저버에게 update() 메소드 콜

Observer Interface

Observer Implement

Observer Test 서브젝트를 관찰할 옵저버 등록 서브젝트의 내용이 바뀌어서 옵저버에게 notify

Mediator Pattern Structure

경보발령시스템 receiver1 경보메시지 경보메시지 경보메시지 receiver2 alerter gateway 경보메시지 receiverN

Mediator Pattern Class Diagram

Mediator Pattern Sequence Diagram

Observer Pattern Mediator Pattern

Observer Pattern Mediator Pattern

Presentation Transcript

Observer pattern MVC

The Observer Pattern

Observer Pattern

The Mediator Pattern

Behavioral Pattern: Mediator

Observer Pattern

Observer design pattern

Behavioral Pattern: Observer

Observer Design Pattern

DESIGN PATTENS - OBSERVER PATTERN

Observer Pattern

The Observer Pattern

AOP and observer pattern

Design Pattern: Mediator

Mediator Design Pattern

Observer Pattern

The Observer Design Pattern

Observer Pattern

Observer Pattern

Observer Design Pattern