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Beginning

Hibernate

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Ottinger

Minter

Linwood

Shelve in

Programming Languages/Java

User level:

Beginning–Intermediate

www.apress.com

SOURCE CODE ONLINE

BOOKS FOR PROFESSIONALS BY PROFESSIONALS

Beginning Hibernate

Beginning Hibernate, Third Edition is ideal if you’re experienced in Java with

databases (the traditional, or “connected,” approach), but new to open-source,

lightweight Hibernate, a leading object-relational mapping and database-oriented

application development framework.

This book packs in information about the release of the Hibernate 4.x persistence

layer and provides a clear introduction to the current standard for object-relational

persistence in Java. And since the book keeps its focus on Hibernate without wasting

time on nonessential third-party tools, you’ll be able to immediately start building

transaction-based engines and applications.

Experienced authors Joseph Ottinger with Dave Minter and Jeff Linwood provide

more in-depth examples than any other book for Hibernate beginners. The authors also

present material in a lively, example-based manner—not a dry, theoretical, hard-to-read

fashion.

What You’ll Learn:

• How to build enterprise Java-based transaction-type applications

that access complex data with Hibernate

• How to work with Hibernate 4

• Where to integrate into the persistence life cycle

• How to map using annotations, Hibernate XML files, and more

• How to search and query with the new version of Hibernate

• How to integrate with MongoDB using NoSQL

THIRD

EDITION

9781430 265177

54999

ISBN 978-1-4302-6517-7

Contents at a Glance

About the Authors �� xv

About the Technical Reviewer �� xvii

Acknowledgments �� xix

Introduction �� xxi

Chapter 1: An Introduction to Hibernate 4�2 ■ ��1

Chapter 2: Integrating and Conﬁguring Hibernate ■ ��9

Chapter 3: Building a Simple Application ■ ��19

Chapter 4: The Persistence Life Cycle ■ ��41

Chapter 5: An Overview of Mapping ■ ��69

Chapter 6: Mapping with Annotations ■ ��81

Chapter 7: JPA Integration and Lifecycle Events ■ ��115

Chapter 8: Using the Session ■ ��135

Chapter 9: Searches and Queries ■ ��149

Chapter 10: Advanced Queries Using Criteria ■ ��165

Chapter 11: Filtering the Results of Searches ■ ��175

Chapter 12: Leaving the Relational Database Behind: NoSQL ■ ��183

Appendix: More Advanced Features ■ ��195

Index ��205

xxi

Introduction

Hibernate is an amazing piece of software. With a little experience and the power of annotations, you can build a

complex, database-backed system with disturbing ease. Once you have built a system using Hibernate, you will never

want to go back to the traditional approaches.

While Hibernate is incredibly powerful, it presents a steep learning curve when you rst encounter it—steep

learning curves are actually a good thing because they impart profound insight once you have scaled them. Yet

gaining that insight takes some perseverance and assistance.

Our aim in this book is to help you scale that learning curve by presenting you with the minimal requirements

of a discrete Hibernate application, explaining the basis of those requirements, and walking you through an example

application that is built using them. We then provide additional material to be digested once the fundamentals are

rmly understood. roughout, we provide examples rather than relying on pure discourse. We hope that you will

continue to nd this book useful as a reference text long after you have become an expert on the subject.

Who This Book Is For

is book assumes a good understanding of Java fundamentals and some familiarity with database programming

using the Java Database Connectivity (JDBC) API. We don’t expect you to know anything about Hibernate—but if

you buy this book, it will probably be because you have had some exposure to the painful process of building a large

database-based system.

All of our examples use open-source software—primarily the Hibernate API itself—so you will not need to

purchase any software to get started with Hibernate development. is book is not an academic text. Our focus is,

instead, on providing extensive examples and taking a pragmatic approach to the technology that it covers.

To true newcomers to the Hibernate API, we recommend that you read at least the rst three chapters in order

before diving into the juicy subjects of later chapters. Very experienced developers or those with experience with

tools similar to Hibernate will want to skim the latter half of the book for interesting chapters. Readers familiar with

Hibernate will want to turn to the appendix for discussion of more arcane topics.

How This Book Is Structured

is book is informally divided into three parts. Chapters 1 through 8 describe the fundamentals of Hibernate,

including conguration, the creation of mapping les, and the basic APIs. Chapters 9 through 11 describe the use of

queries, criteria, and lters to access the persistent information in more sophisticated ways. Chapter 12 addresses the

use of Hibernate to talk to nonrelational data stores, providing an easy “on ramp” to NoSQL.

Finally, the appendixes discuss features that you will use less often or that are peripheral to the core Hibernate

functionality. e following list describes more fully the contents of each chapter:

Chapter 1 outlines the purpose of persistence tools and presents excerpts from a simple example application to

show how Hibernate can be applied. It also introduces core terminology and concepts.

Chapter 2 discusses the fundamentals of conguring a Hibernate application. It presents the basic architecture of

Hibernate and discusses how a Hibernate application is integrated into an application.

■ IntroduCtIon

xxii

Chapter 3 presents an example application, walking you through the complete process of creating and running

the application. It then looks at a slightly more complex example and introduces the notion of generating the database

schema directly from Hibernate annotations.

Chapter 4 covers the Hibernate lifecycle in depth. It discusses the lifecycle in the context of the methods available

on the core interfaces. It also introduces key terminology and discusses the need for cascading and lazy loading.

Chapter 5 explains why mapping information must be retained by Hibernate and demonstrates the various types

of associations that can be represented by a relational database. It briey discusses the other information that can be

maintained within a Hibernate mapping.

Chapter 6 explains how Hibernate lets you use the annotations to represent mapping information. It provides

detailed examples for the most important annotations, and discusses the distinctions between the standard JPA 2

annotations and the proprietary Hibernate ones.

Chapter 7 explains some of the uses of the Java Persistence API (as opposed to the Hibernate-native API), as well

as the lifecycle and validation of persisted objects.

Chapter 8 revisits the Hibernate Session object in detail, explaining the various methods that it provides.

e chapter also discusses the use of transactions, locking, and caching, as well as how to use Hibernate in a

multithreaded environment.

Chapter 9 discusses how Hibernate can be used to make sophisticated queries against the underlying relational

database using the built-in Hibernate Query Language (HQL).

Chapter 10 introduces the Criteria API, which is a programmatic analog of the query language discussed

in Chapter 9.

Chapter 11 discusses how the Filter API can be used to restrict the results of the queries introduced in

Chapters 9 and 10.

Chapter 12 introduces Hibernate OGM, which maps objects to non-relational data stores like Innispan and

Mongodb, among others. It shows some of the uses of Hibernate Search to provide a common search facility for

NoSQL, as well as oering full text query support.

Appendix presents a large number of peripheral features that do not warrant more extensive coverage in a

beginner-level text. e appendix discusses the basics, with examples, of the support for versioning and optimistic

locking, and some of the obscure limitations of Hibernate and various ways that these can be worked around. It also

discusses the use of events and interceptors.

Downloading the Code

e source code for this book is available to readers from www.apress.com, in the Source Code/Download section.

Please feel free to visit the Apress web site and download all the code from there.

Contacting the Authors

We welcome feedback from our readers. If you have any queries or suggestions about this book, or technical questions

about Hibernate, or if you just want to share a really good joke, you can email Joseph Ottinger at joeo@enigmastation.com,

Dave Minter at dave@paperstack.com, and Je Linwood at jlinwood@gmail.com.

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wzbyytm

2014-07-03

可供快速学习Hibernate4.x
pipiluca

2015-05-01

最新版的，好东西啊
oanda66

2014-05-09

Very good book. English version. Very clear. Thank you for sharing!
mianbao5481

2014-05-16

不错，感谢楼主
CrCat

2015-04-10

新书，有很多干货！感谢LZ！