Design Patterns Explained: A New Perspective on Object-Oriented Design

Design Patterns Explained, Second Edition is a simple, clear, and practical introduction to patterns. Using dozens of new C# and updated Java examples, it shows students how to use patterns to design, develop, and deliver software far more effectively. Students should read this book before they they try and tackle Gamma's well-known work, Design Patterns. The book starts with a complete overview of the fundamental principles of patterns, and the role of object-oriented analysis and design in contemporary software development. Then, using easy-to-understand sample code, Alan Shalloway and James Trott illuminate dozens of today's most useful patterns: their underlying concepts, advantages, tradeoffs, implementation techniques, and pitfalls to avoid. Many patterns are accompanied by UML diagrams.

Building on their best-selling First Edition, Shalloway and Trott have thoroughly updated this book to reflect new software design trends, patterns, and implementation techniques. Reflecting extensive reader feedback, they have deepened and clarified coverage throughout, and reorganized content for even greater ease of understanding.

Auteur

Alan Shalloway is founder, CEO, and principal consultant of Net Objectives, an object-oriented consulting and training organization. An object-oriented consultant and software developer for over 20 years, he is a frequent speaker at leading development conferences, including SD Expo, Java One, OOP, and OOPSLA. He is a certified Scrum master. He is co-author of An Introduction to XML and its Family of Technologies. Shalloway holds a master's degree in computer science from MIT.

James R. Trott currently works as a senior consultant for a large financial institution in the Pacific Northwest. He has used object-oriented and pattern-based analysis techniques throughout his 20-year career in knowledge management and knowledge engineering. He holds a master of science in applied mathematics, an MBA, and a master of arts in intercultural studies.

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Texte du rabat

Design Patterns Explained, Second Edition is a simple, clear, and practical introduction to patterns. Using dozens of new C# and updated Java examples, it shows students how to use patterns to design, develop, and deliver software far more effectively. Students should read this book before they they try and tackle Gamma's well-known work, Design Patterns. The book starts with a complete overview of the fundamental principles of patterns, and the role of object-oriented analysis and design in contemporary software development. Then, using easy-to-understand sample code, Alan Shalloway and James Trott illuminate dozens of today's most useful patterns: their underlying concepts, advantages, tradeoffs, implementation techniques, and pitfalls to avoid. Many patterns are accompanied by UML diagrams.

Building on their best-selling First Edition, Shalloway and Trott have thoroughly updated this book to reflect new software design trends, patterns, and implementation techniques. Reflecting extensive reader feedback, they have deepened and clarified coverage throughout, and reorganized content for even greater ease of understanding.

Résumé

"One of the great things about the book is the way the authors explain concepts very simply using analogies rather than programming examples–this has been very inspiring for a product I'm working on: an audio-only introduction to OOP and software development."

–Bruce Eckel

"...I would expect that readers with a basic understanding of object-oriented programming and design would find this book useful, before approaching design patterns completely. Design Patterns Explained complements the existing design patterns texts and may perform a very useful role, fitting between introductory texts such as UML Distilled and the more advanced patterns books."

–James Noble

Leverage the quality and productivity benefits of patterns–without the complexity! Design Patterns Explained, Second Edition is the field's simplest, clearest, most practical introduction to patterns. Using dozens of updated Java examples, it shows programmers and architects exactly how to use patterns to design, develop, and deliver software far more effectively.

You'll start with a complete overview of the fundamental principles of patterns, and the role of object-oriented analysis and design in contemporary software development. Then, using easy-to-understand sample code, Alan Shalloway and James Trott illuminate dozens of today's most useful patterns: their underlying concepts, advantages, tradeoffs, implementation techniques, and pitfalls to avoid. Many patterns are accompanied by UML diagrams.

Building on their best-selling First Edition, Shalloway and Trott have thoroughly updated this book to reflect new software design trends, patterns, and implementation techniques. Reflecting extensive reader feedback, they have deepened and clarified coverage throughout, and reorganized content for even greater ease of understanding. New and revamped coverage in this edition includes

• Better ways to start "thinking in patterns"
• How design patterns can facilitate agile development using eXtreme Programming and other methods
• How to use commonality and variability analysis to design application architectures
• The key role of testing into a patterns-driven development process
• How to use factories to instantiate and manage objects more effectively
• The Object-Pool Pattern–a new pattern not identified by the "Gang of Four"
• New study/practice questions at the end of every chapter Gentle yet thorough, this book assumes no patterns experience whatsoever. It's the ideal "first book" on patterns, and a perfect complement to Gamma's classic Design Patterns. If you're a programmer or architect who wants the clearest possible understanding of design patterns–or if you've struggled to make them work for you–read this book.

Contenu

I. AN INTRODUCTION TO OBJECT-ORIENTED SOFTWARE DEVELOPMENT.

1. The Object-Oriented Paradigm.

Overview.

Before the Object-Oriented Paradigm: Functional Decomposition.

The Problem of Requirements.

Dealing with Changes: Using Functional Decomposition.

Dealing with Changing Requirements.

The Object-Oriented Paradigm.

Object-Oriented Programming in Action.

Special Object Methods.

Summary.

Review Questions.

2. The UML-The Unified Modeling Language.

Overview.

What Is the UML?

Why Use the UML?

The Class Diagram.

Interaction Diagrams.

Summary.

Review Questions.

II. THE LIMITATIONS OF TRADITIONAL OBJECT-ORIENTED DESIGN.

3. A Problem That Cries Out for Flexible Code.

Overview.

Extracting Information from a CAD/CAM System.

Understand the Vocabulary.

Describe the Problem.

The Essential Challenges and Approaches.

Summary.

Review Questions.

4. A Standard Object-Oriented Solution.

Overview.

Solving with Special Cases.

Summary.

Review Questions.

III. DESIGN PATTERNS.

5. An Introduction to Design Patterns.

Overview.

Design Patterns Arose from Architecture and Anthropology.

Moving from Architectural to Software Design Patterns.

Why Study Design Patterns?

Other Advantages of Studying Design Patterns.

Summary.

Review Questions.

6. The Facade Pattern.

Overview.

Introducing the Facade Pattern.

Learning the Facade Pattern.

Field Notes: The Facade Pattern.

Relating the Facade Pattern to the CAD/CAM Problem.

Summary.

Review Questions.

7. The Adapter Pattern.

Overview.

Introducing the Adapter Pattern.

Learning the Adapter Pattern.

Field Notes: The Adapter Pattern.

Relating the Adapter Pattern to the…