Domain-Driven Design: Using Naked Objects

by Haywood, Dan

• ISBN13: 9781934356449
• ISBN10: 1934356441
• Format: Paperback
• Copyright: 2009-12-22
• Publisher: Oreilly & Associates Inc

Summary

You need to concentrate on the business logic of your application, working closely with users to develop the features they desperately needed yesterday. That means you can't afford to waste time working on the plumbing: the repetitive, boring-but-necessary bits that every app needs. Wouldn't it be great to write just the domain objects and let the rest of the application take care of itself?

Author Biography

Dan Haywood has 20 years' experience as a consultant, writer, and trainer, offering advice on domain-driven design and agile development practices for both the Java and .NET platforms. He has been working with Naked Objects since 2002 and is a committer to the Naked Objects framework; he is also the lead of a number of sister open source projects. He has presented Naked Objects at numerous conferences over the years, and written articles and books on Naked Objects and other technical topics.

Table of Contents

Preface	p. xv
Who This Book is For	p. xvi
How the Book is Organized	p. xvii
Case Study and Exercises	p. xviii
Conventions	p. xix
Further Resources	p. xix
Tools	p. 1
Getting Started	p. 3
Understanding Domain-Driven Design	p. 3
The Essentials of DDD	p. 4
Introducing Naked Objects	p. 8
Naked Objects in About Five Minutes	p. 10
How Naked Objects Helps with DDD	p. 16
The Big Picture	p. 19
Identifying the Domain Concepts	p. 23
Introducing CarServ	p. 23
Getting Ready	p. 25
Creating the Domain Classes	p. 27
Using Repositories to Locate Objects	p. 31
Identifying Objects to the User	p. 35
Capturing Simple Business Rules	p. 41
Providing Choices for Properties	p. 43
Relating Objects Together	p. 47
Associating Objects	p. 47
Adding Describing Concepts	p. 54
Capturing Business Rules for Collections	p. 60
Rapid Prototyping	p. 63
Fixtures for Setting Up Domain Objects	p. 64
Fixtures for Setting Up the Clock	p. 67
Fixtures for Setting Up User Sessions	p. 70
Organizing Fixtures into Hierarchies	p. 74
Creating Behaviorally Complete Objects	p. 79
Adding Behavior to Domain Objects	p. 80
Validating Action Arguments	p. 82
Making Actions Friendlier to Use	p. 85
Adding Finders to Repositories	p. 87
Implementing Business Rules	p. 91
Validation Recap	p. 92
Disabling Class Members	p. 95
Hiding Class Members	p. 98
Declarative Rules and the Object Life Cycle	p. 102
Validating the Entire Object	p. 105
Using Value Types	p. 109
Identifying Value Types	p. 110
Pushing Business Rules onto a Value Type	p. 111
Adding a Third-Party Value Type	p. 114
Specifying Defaults and Other Characteristics	p. 122
Isolating Infrastructure Services	p. 125
A Taxonomy of Services	p. 126
The Domain Object Container	p. 128
Dependency Injection	p. 130
Using Services in Fixtures	p. 131
Requirements for Writing Services	p. 132
Using Interfaces for Repositories	p. 134
Implementing a Calendar Service	p. 136
Hints and Tips for Writing Services	p. 139
Techniques	p. 143
Distributing Class Responsibilities	p. 145
Applying Coad Colors	p. 146
Factoring Out Objects	p. 148
Balancing Responsibilities	p. 152
Representing Large Collections with Finder	p. 155
Contributing Actions from Services	p. 158
Applying Domain Patterns	p. 163
Type as Factory Pattern	p. 164
Knowledge Level Pattern	p. 170
Null Object Pattern	p. 173
Role Object Pattern	p. 175
User Peer Object Pattern	p. 180
Strategy Pattern	p. 181
Process Object Pattern	p. 186
Keeping the Model Maintainable	p. 193
Analyzing the Structure of CarServ	p. 194
Decoupling by Moving Responsibilities	p. 197
Decoupling by Introducing Interfaces	p. 199
Layering Modules	p. 206
Decoupling by Splitting Classes	p. 208
Introducing an Application Package	p. 209
An Application Architecture Blueprint	p. 212
Scenario Testing	p. 217
Writing Developer Tests	p. 218
Scenario Testing Using FitNesse	p. 223
Getting Ready to Write Scenario Tests	p. 224
Writing Scenario Tests	p. 229
Hints and Tips	p. 236
Practices	p. 239
Developing Domain Applications	p. 241
The Layered Architecture	p. 242
Deployment Options	p. 243
Which Option to Choose?	p. 246
Development Activities	p. 249
Configuration Management	p. 252
Working Effectively	p. 255
Naked Objects as a Design Tool	p. 259
Using Naked Objects Only in Development	p. 259
Decoupling from the Framework	p. 260
Programming Model Interaction Protocol	p. 264
Changing the Programming Model	p. 266
Integrating with Web Frameworks	p. 269
Deploying an Embedded Metamodel	p. 270
Integrating Layers with the Custom Presentation Option	p. 281
Integrating with the Database	p. 287
Configuring XML Persistence	p. 288
Mapping Entities Using JPA Annotations	p. 290
Mapping Value Objects Using JPA Annotations	p. 296
Mapping Relationships	p. 298
Porting over Repositories	p. 302
Deploying and Running the Application	p. 305
Integrating Within the Enterprise	p. 311
Bounded Context Patterns	p. 312
Exposing a RESTful Web Service for Other Systems	p. 314
Integrating Using an Enterprise Service Bus	p. 320
Deploying the Full Runtime	p. 333
Deploying the Application	p. 333
Securing the Application	p. 342
Deploying the Sister Projects	p. 347
A CarServ Retrospective	p. 352
The DSFA Application	p. 353
Closing Thoughts	p. 354
Appendixes	p. 363
Programming Model Cheat Sheet	p. 365
Eclipse Templates	p. 369
Bibliography	p. 373
Index	p. 377
Table of Contents provided by Ingram. All Rights Reserved.

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