this print for content only—size & color not accurate 7.5 x 9.25 spine = x.xxx" xxx page count
Roche
Douglas
eXPeRT’s VOIce
®
In clOud cOmPuTIng
Beginning
Java
™
Google
App Engine
cYAn
mAgenTA
YellOW
BlAcK
PAnTOne 123 c
Kyle Roche
and
Jeff Douglas
Companion
eBook Available
Learn about the core components of the Google
App Engine SDK, platform, and services for web
developers using Java
TM
technology
BOOKs fOR PROfessIOnAls BY PROfessIOnAls
®
Beginning Java
™
Google App

Engine
Dear Reader,
Cloud computing is becoming a model of choice for many developers like
yourself. This book gives you the keys to Google App Engine, which is a major
Cloud platform for Java
TM
. We’ll show you all the core components of the SDK,
the platform, and the services that Google provides – the essentials for building
a web application on App Engine.
You'll learn how to put App Engine to work quickly, starting with the Google
Plugin for Eclipse and moving on to the development server, the datastore, Java
Data Objects (JDO), and Persistence as a Service. Then we'll show you how to use
Spring as a Service for transaction, data access, and more. You'll see how you can
create Ajax applications with Google Web Toolkit, and how to build Web apps that
even integrate with Salesforce.com and Google Wave. And once your app is up
and running, you'll learn how to monitor, manage, and maintain it.
Beginning Java
™
Google App Engine gives you a complete guided tour of
Google App Engine. Once you’ve read this book, you’ll be able to implement
your next big project with this exciting new platform, with the knowledge and
skills you’ve gained from this book as your foundation.

Kyle Roche and Jeff Douglas
Kyle Roche
US $44.99
Shelve in:
Web Development /
Programming Languages / Java
User level:

Beginner to Intermediate
FPO
THE APRESS ROADMAP
Pro Scala
Pro Hadoop
Beginning Java
Google App Engine
The Definitive Guide to Lift:
A Scala-based
Web Framework
The Definitive Guide to Grails,
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Beginning Java™ EE 6
Platform with GlassFish™ 3
Beginning Scala
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SOURCE CODE ONLINE
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ISBN 978-1-4302-2553-9
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5 44 9 9
Beginning
Jeff Douglas
this print for content only—size & color not accurate 7.5 x 9.25 spine = x.xxx" xxx page count

eRT’s VOIce
®
In clOud cOmPuTI
cYAn
mAgenTA
YellOW
BlAcK
PAnTOne 123 c
OOKs fOR PROfessIOnAls BY PROfessIOnAls
®
Beginning Java
™
Google App
Engine
Dear Reader,
Cloud computing is becoming a model of choice for many developers like
yourself. This book gives you the keys to Google App Engine, which is a major
Cloud platform for Java
TM
. We’ll show you all the core components of the SDK,
the platform, and the services that Google provides – the essentials for building
a web application on App Engine.
You'll learn how to put App Engine to work quickly, starting with the Google
Plugin for Eclipse and moving on to the development server, the datastore, Java
Data Objects (JDO), and Persistence as a Service. Then we'll show you how to use
Spring as a Service for transaction, data access, and more. You'll see how you can
create Ajax applications with Google Web Toolkit, and how to build Web apps that
even integrate with Salesforce.com and Google Wave. And once your app is up
and running, you'll learn how to monitor, manage, and maintain it.
Beginning Java

™
Google App Engine gives you a complete guided tour of
Google App Engine. Once you’ve read this book, you’ll be able to implement
your next big project with this exciting new platform, with the knowledge and
skills you’ve gained from this book as your foundation.

Kyle Roche and Jeff Douglas
Kyle Roche
US $44.99
Shelve in:
Web Development /
Programming Languages / Java
User level:
Beginner to Intermediate
FPO
THE APRESS ROADMAP
Pro Scala
Pro Hadoop
Beginning Java
Google App Engine
The Definitive Guide to Lift:
A Scala-based
Web Framework
The Definitive Guide to Grails,
Second Edition
Beginning Java™ EE 6
Platform with GlassFish™ 3
Beginning Scala
Beginning Groovy
and Grails

TM
www.apress.com
SOURCE CODE ONLINE
Companion eBook

See last page for details
on $10 eBook version
Jeff Douglas
Beginning Java
™

Google App Engine








■ ■ ■




Kyle Roche
Jeff Douglas


Beginning Java

™
Google App Engine
Copyright © 2009 by Kyle Roche and Jeff Douglas
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There’s an Irish saying . . . no man can prosper without his woman’s leave. —KR
To Cathy, who has touched not only my heart,
but the hearts of so many that will never remember her. I love you. —JD


v
Contents at a Glance
Foreword xiii
About the Authors xv
About the Technical Reviewer xvii
Acknowledgments xix
Introduction xxi
Chapter 1: Beginning Google App Engine for Java 1
Chapter 2: Introduction to App Engine 7
Chapter 3: Getting Started with Google App Engine for Java 25
Chapter 4: Servlet Container and Frameworks 43
Chapter 5: Developing Your Application 89
Chapter 6: Authenticating Users 123
Chapter 7: Using the App Engine Datastore 135
Chapter 8: App Engine Services 169

Chapter 9: Administration and Integration 197
Index 221
vi

vii
Contents
Foreword xiii
About the Authors xv
About the Technical Reviewer xvii
Acknowledgments xix
Introduction xxi
Chapter 1: Beginning Google App Engine for Java 1
Cloud Computing and App Engine 1
Find More Time to Innovate 4
What You’ll Learn in This Book 5
Summary 6
Chapter 2: Introduction to App Engine 7
App Engine Architecture 7
Being a Good Neighbor With Quotas 9
Billable and Fixed Quotas 10
Detailed Resource Quotas 12
Components of an App Engine Application 22
Summary 23
Chapter 3: Getting Started with Google App Engine for Java 25
Where Do We Start? 25
Create Your First App Engine Project 30
Local Development Server 37
Summary 42
■ CONTENTS
viii

Chapter 4: Servlet Container and Frameworks 43
Choosing a Framework 43
Servlets and JavaServer Pages 46
Views 46
Model 59
Controller 64
Deployment Descriptor 69
PersistenceManager 69
Spring MVC 70
Server Configuration 71
Views 72
Adobe Flex 74
Server Configuration 76
Client-Side Code 79
Server-Side Code 83
Summary 88
Chapter 5: Developing Your Application 89
Functional Specifications 89
Timecard UI Mock-up 90
Technical Specifications 91
Authentication 91
Presentation 91
Persistence 92
Using Google Web Toolkit 92
Creating Your Project 93
Running the Initial Starter Application 96
Developing Your Application 97
Required Imports 101
Coding Your UI 102