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Mô hình thiết kế

Thiết kế mẫu có nguồn gốc của họ trong công tác Christopher Alexander (một kỹ sư dân sự người viết về kinh nghiệm của mình trong việc giải quyết các vấn đề thiết kế khi chúng liên quan đến tòa nhà - thị trấn) các chuyên gia phần mềm bắt đầu để kết hợp của Alexander nguyên tắc này vào việc tạo ra các mẫu thiết kế ban đầu tài liệu như một hướng dẫn cho các nhà phát triển mới làm quen | DESIGN PATTERNS EFA-EMS: Le Thi Thuy INTRODUCTION Content What is a Design Pattern? Three categories of Design Pattern 2.1. List of Design Patterns 2.2. Design Pattern Space 2.3. Relation among Design Patterns Present common Design Patterns 3.1. Creational Patterns 3.2. Structural Patterns 3.3. Behavioral Pattern Referent I.What is a Design Pattern(1) Design patterns have their roots in the work of Christopher Alexander (a civil engineer who wrote about his experience in solving design issues as they related to buildings &towns) Software professionals began to incorporate Alexander's principles into the creation of early design pattern documentation as a guide to novice developers. I. What is a Design Pattern(2) "Each pattern describes a problem which occurs over and over again in our environment, and then describes the core of the solution to that problem, in such a way that you can use this solution a million times over, without ever doing it the same way twice” – . | DESIGN PATTERNS EFA-EMS: Le Thi Thuy INTRODUCTION Content What is a Design Pattern? Three categories of Design Pattern 2.1. List of Design Patterns 2.2. Design Pattern Space 2.3. Relation among Design Patterns Present common Design Patterns 3.1. Creational Patterns 3.2. Structural Patterns 3.3. Behavioral Pattern Referent I.What is a Design Pattern(1) Design patterns have their roots in the work of Christopher Alexander (a civil engineer who wrote about his experience in solving design issues as they related to buildings &towns) Software professionals began to incorporate Alexander's principles into the creation of early design pattern documentation as a guide to novice developers. I. What is a Design Pattern(2) "Each pattern describes a problem which occurs over and over again in our environment, and then describes the core of the solution to that problem, in such a way that you can use this solution a million times over, without ever doing it the same way twice” – Chirstopher Alexander “Description of communicating objects and classes that are customized to solve a general design problem in a particular context” - Erich Gamma, Richard Helm, Ralph Johnson, John Vlissides. Each pattern focuses in a particular object-oriented design problem or issue. II. Three categories of Design Pattern Creational patterns: are ones that create objects for you, rather than having you instantiate objects directly. This gives your program more flexibility in deciding which objects need to be created for a given case. Structural patterns: help you compose groups of objects into larger structures, such as complex user interfaces or accounting data. Behavioral patterns: help you define the communication between objects in your system and how the flow is controlled in a complex program. 2.1. List of Design Patterns Creational Patterns Abstract Factory Builder Factory Method Prototype Singleton Structural Patterns Adapter Bridge Composite Decorator Facade .