Better, Faster, Lighter Java

Enterprise network applications must be able to access data stored in relational databases, and when the application is written in Java, there are several different ways to accomplish this. In this introduction to Hibernate and Spring, two popular new "lightweight" application server architectures based on Java, well- known author Bruce Tate argues that the old heavyweight architectures such as WebLogic, JBoss and WebSphere are too cumbersome, too complicated, and contribute to slow and buggy application code. Better, Faster, Lighter Java shows developers how either Hibernate or Spring can help them create enterprise applications that are easier to maintain, easier to write and debug, and ultimately much faster.

Bruce Tate is a kayaker, mountain biker, and father of two. In his spare time, he is an independent consultant in Austin, Texas. In 2001, he founded J2Life, LLC, a consulting firm that specializes in Java persistence frameworks and lightweight development methods. His customers have included FedEx, Great West Life, TheServerSide, and BEA. He speaks at conferences and Java user's groups around the nation. Before striking out on his own, Bruce spent thirteen years at IBM working on database technologies, object-oriented infrastructure and Java. He was recruited away from IBM to help start the client services practice in an Austin start up called Pervado Systems. He later served a brief stent as CTO of IronGrid, which built nimble Java performance tools. Bruce is the author of four books, including best-selling Bitter Java.

First rule of kayak: When in doubt, paddle like Hell

Working as a professional programmer, instructor, speaker and pundit since 1992, Justin Gehtland has developed real-world applications using VB, COM, .NET, Java, Perl and a slew of obscure technologies since relegated to the trash heap of technical history. His focus has historically been on "connected" applications, which of course has led him down the COM+, ASP/ASP.NET and JSP roads.

Justin is the co-author of Effective Visual Basic (Addison Wesley, 2001) and Windows Forms Programming in Visual Basic .NET (Addison Wesley, 2003). He is currently the regular Agility columnist on The Server Side .NET, and works as a consultant through his company Relevance, LLC in addition to teaching for DevelopMentor.

Preface

ix

The Inevitable Bloat

1

(16)

Bloat Drivers

1

(8)

Options

9

(2)

Five Principles for Fighting the Bloat

11

(4)

Summary

15

(2)

Keep It Simple

17

(19)

The Value of Simplicity

17

(4)

Process and Simplicity

21

(5)

Your Safety Net

26

(9)

Summary

35

(1)

Do One Thing, and Do It Well

36

(25)

Understanding the Problem

37

(4)

Distilling the Problem

41

(5)

Layering Your Architecture

46

(6)

Refactoring to Reduce Coupling

52

(8)

Summary

60

(1)

Strive for Transparency

61

(26)

Benefits of Transparency

61

(1)

Who's in Control?

62

(2)

Alternatives to Transparency

64

(6)

Reflection

70

(7)

Injecting Code

77

(2)

Generating Code

79

(3)

Advanced Topics

82

(3)

Summary

85

(2)

You Are What You Eat

87

(20)

Golden Hammers

88

(10)

Understanding the Big Picture

98

(4)

Considering Technical Requirements

102

(4)

Summary

106

(1)

Allow for Extension

107

(22)

The Basics of Extension

107

(5)

Tools for Extension

112

(11)

Plug-In Models

123

(3)

Who Is the Customer?

126

(2)

Summary

128

(1)

Hibernate

129

(22)

The Lie

129

(1)

What Is Hibernate?

130

(11)

Using Your Persistent Model

141

(4)

Evaluating Hibernate

145

(5)

Summary

150

(1)

Spring

151

(26)

What Is Spring?

151

(3)

Pet Store: A Counter-Example

154

(5)

The Domain Model

159

(2)

Adding Persistence

161

(9)

Presentation

170

(5)

Summary

175

(2)

Simple Spider

177

(27)

What Is the Spider?

178

(1)

Examining the Requirements

179

(3)

Planning for Development

182

(1)

The Design

182

(1)

The Configuration Service

183

(4)

The Crawler/Indexer Service

187

(6)

The Search Service

193

(3)

The Console Interface

196

(3)

The Web Service Interface

199

(4)

Extending the Spider

203

(1)

Extending jPetStore

204

(22)

A Brief Look at the Existing Search Feature

204

(3)

Replacing the Controller

207

(4)

The User Interface (JSP)

211

(3)

Setting Up the Indexer

214

(2)

Making Use of the Configuration Service

216

(2)

Adding Hibernate

218

(6)

Summary

224

(2)

Where Do We Go from Here?

226

(8)

Technology

226

(5)

Process

231

(1)

Challenges

232

(1)

Conclusion

232

(2)

Bibliography

234

(3)

Index

237

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Better, Faster, Lighter Java

Summary

Author Biography

Table of Contents

Supplemental Materials