Beginning Java Google App Engine

265 Pages·2009·2.39 MB·English

by  Kyle Roche

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Beginning Java Google App
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Dear Reader,
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Cloud computing is becoming a model of choice for many developers like Beginning
yourself. This book gives you the keys to Google App Engine, which is a major v
Cloud platform for JavaTM. We’ll show you all the core components of the SDK, a
Kyle Roche
the platform, and the services that Google provides – the essentials for building
Java Google
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
G
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
o
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 o App Engine
and running, you'll learn how to monitor, manage, and maintain it.
Beginning Java™ Google App Engine gives you a complete guided tour of g
Google App Engine. Once you’ve read this book, you’ll be able to implement
l
your next big project with this exciting new platform, with the knowledge and
e
skills you’ve gained from this book as your foundation.
Jeff Douglas

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Beginning Scala A Scala-based i
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SOURCE CODE ONLINE
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Shelve in:
Web Development /
Programming Languages / Java
User level:
9 781430 225539
Beginner to Intermediate
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™
Beginning Java
Google App Engine

■ ■ ■

Kyle Roche
Jeff Douglas

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Beginning Java™ Google App Engine
Copyright © 2009 by Kyle Roche and Jeff Douglas
All rights reserved. No part of this work may be reproduced or transmitted in any form or by any means,
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ISBN-13 (pbk): 978-1-4302-2553-9
ISBN-13 (electronic): 978-1-4302-2554-6
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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
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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
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vi
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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
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■ CONTENTS
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
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