Pro Apache Beehive KUNAL MITTAL AND SRINIVAS KANCHANAVALLY Pro Apache Beehive Copyright © 2005 by Kunal Mittal and Srinivas Kanchanavally All rights reserved. No part of this work may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopying, recording, or by any information storage or retrieval system, without the prior written permission of the copyright owner and the publisher. ISBN (pbk): 1-59059-515-7 Printed and bound in the United States of America 9 8 7 6 5 4 3 2 1 Trademarked names may appear in this book. Rather than use a trademark symbol with every occurrence of a trademarked name, we use the names only in an editorial fashion and to the benefit of the trademark owner, with no intention of infringement of the trademark. Lead Editor: Steve Anglin Technical Reviewer: Dilip Thomas Editorial Board: Steve Anglin, Dan Appleman, Ewan Buckingham, Gary Cornell, Tony Davis, Jason Gilmore, Jonathan Hassell, Chris Mills, Dominic Shakeshaft, Jim Sumser Associate Publisher: Grace Wong Project Manager: Kylie Johnston Copy Edit Manager: Nicole LeClerc Copy Editor: Kim Wimpsett Assistant Production Director: Kari Brooks-Copony Production Editor: Linda Marousek Compositor: Susan Glinert Stevens Proofreader: Sue Boshers Indexer: Carol A. Burbo Artist: Wordstop Technologies (P) Ltd, Chennai, India Interior Designer: Van Winkle Design Group Cover Designer: Kurt Krames Manufacturing Manager: Tom Debolski Distributed to the book trade worldwide by Springer-Verlag New York, Inc., 233 Spring Street, 6th Floor, New York, NY 10013. Phone 1-800-SPRINGER, fax 201-348-4505, e-mail [email protected], or visit http://www.springeronline.com. For information on translations, please contact Apress directly at 2560 Ninth Street, Suite 219, Berkeley, CA 94710. Phone 510-549-5930, fax 510-549-5939, e-mail [email protected], or visit http://www.apress.com. The information in this book is distributed on an "as is" basis, without warranty. Although every precaution has been taken in the preparation of this work, neither the author(s) nor Apress shall have any liability to any person or entity with respect to any loss or damage caused or alleged to be caused directly or indirectly by the information contained in this work. The source code for this book is available to readers at http://www.apress.com in the Downloads section. I would like to dedicate this book to my wife, Neeta, and to my dogs, Dusty and Snowie. They have been extremely patient during the authoring process and all the missed weekend activities that I had to put on the back burner as I was writing this book. Neeta has been extremely patient and has helped me by sharing my other responsibilities so that I could focus on the book. I would also like to thank my coauthor, Srini, who has worked several long hours coming up with all the examples you see in this book. Every single line of code was written by him. —Kunal Mittal I dedicate this book to my wife, Harini, for all her love, support, encouragement, and sacrifice. To my parents, family, and friends: thank you all, you make life wonderful. —Srinivas Kanchanavally Contents at a Glance Foreword . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .xiii About the Authors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xv About the Technical Reviewer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xvii Acknowledgments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .xix Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .xxi ■CHAPTER 1 What’s Apache Beehive? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 ■CHAPTER 2 Introducing Web Services and SOA Fundamentals . . . . . . . . . . . . . 15 ■CHAPTER 3 Introducing Annotations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27 ■CHAPTER 4 Dissecting Java Page Flows . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45 ■CHAPTER 5 Using NetUI and Page Flows . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65 ■CHAPTER 6 Using Controls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 101 ■CHAPTER 7 Working with Beehive Web Services and JSR 181 . . . . . . . . . . . . 135 ■CHAPTER 8 Using XMLBeans . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 153 ■APPENDIX A Setting Up Your Development Environment . . . . . . . . . . . . . . . . . . . 173 ■APPENDIX B Working with Eclipse and Pollinate . . . . . . . . . . . . . . . . . . . . . . . . . . 179 ■APPENDIX C Contributing to Beehive and XMLBeans . . . . . . . . . . . . . . . . . . . . . . 191 ■INDEX . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 197 v CCoonntteennttss Foreword . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .xiii About the Authors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xv About the Technical Reviewer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xvii Acknowledgments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .xix Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .xxi ■CHAPTER 1 What’s Apache Beehive? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Enterprise Application Development: The Challenges . . . . . . . . . . . . . . . . 1 Delivering to the Customer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 Getting the Best Performance. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Securing Your Applications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Integrating Your Applications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Having Freedom of Choice. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 How Java Fits Into All of This . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 The Growth of Java. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 The Role of J2EE. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Introducing Service-Oriented Architecture (SOA) . . . . . . . . . . . . . . . . . . . . 7 Introducing BEA WebLogic Platform . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 BEA WebLogic Server. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 BEA WebLogic Workshop. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 BEA WebLogic Integration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 BEA WebLogic Portal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 BEA WebLogic JRockit. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 What Does BEA WebLogic Platform Provide? . . . . . . . . . . . . . . . . . . . . . . . 9 Exploring the History of BEA WebLogic Workshop . . . . . . . . . . . . . . . . . . 10 Introducing Apache Beehive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 Introducing XMLBeans . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 So, What’s Next? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 vii viii ■CONTENTS ■CHAPTER 2 Introducing Web Services and SOA Fundamentals . . . . . . 15 Introducing Web Services . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 Web Service Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 Basic Web Service Technologies . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 Enterprise-Class Web Services. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 Introducing SOA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 What’s a Service?. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 Defining SOA. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22 Defining Service-Oriented Programming. . . . . . . . . . . . . . . . . . . . . . 22 Exploring the Role of XML in SOA. . . . . . . . . . . . . . . . . . . . . . . . . . . . 23 How Does Apache Beehive Enable SOA? . . . . . . . . . . . . . . . . . . . . . . . . . . 23 How Do Controls Relate to SOA?. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24 How Do Apache Beehive Web Services Relate to SOA?. . . . . . . . . . 24 How Do XMLBeans Relate to SOA? . . . . . . . . . . . . . . . . . . . . . . . . . . 24 So, What’s Next? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24 ■CHAPTER 3 Introducing Annotations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27 What’s an Annotation? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27 Basic Java 1.5 Annotations. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28 JSR 175. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31 JSR 181. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31 Using Annotations in WebLogic Workshop . . . . . . . . . . . . . . . . . . . . . . . . . 32 Java Page Flows. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32 Controls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35 Web Services. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39 Introducing Apache Beehive Annotations . . . . . . . . . . . . . . . . . . . . . . . . . . 42 Page Flows/NetUI . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42 Controls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43 Web Services. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43 So, What’s Next? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44 ■CHAPTER 4 Dissecting Java Page Flows . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45 Introducing Java Page Flows . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45 Page Flows in WebLogic Workshop . . . . . . . . . . . . . . . . . . . . . . . . . . 46 Page Flows in Apache Beehive. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48 ■CONTENTS ix Introducing Page Flow Architecture . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54 Page Flow Components. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54 NetUI Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58 Reviewing Page Flow Architecture. . . . . . . . . . . . . . . . . . . . . . . . . . . 62 So, What’s Next? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63 ■CHAPTER 5 Using NetUI and Page Flows . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65 Creating the Sample Bookstore Application . . . . . . . . . . . . . . . . . . . . . . . 65 Setting Up the Bookstore Application. . . . . . . . . . . . . . . . . . . . . . . . . 65 Running the Sample Bookstore Application. . . . . . . . . . . . . . . . . . . . 66 Looking at the Code . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66 Dissecting NetUI Tags . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83 Examining the NetUI Tag Library. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83 Examining the NetUI-data Tag Library. . . . . . . . . . . . . . . . . . . . . . . . 93 Examining the NetUI-template Tag Library . . . . . . . . . . . . . . . . . . . . 97 Introducing Shared Flows . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 99 Accessing Methods of the Shared Flow from Your Page Flow . . . . 99 Accessing Methods of the Shared Flow from Your JSP. . . . . . . . . 100 So, What’s Next? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100 ■CHAPTER 6 Using Controls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 101 Introducing Controls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 101 Understanding the Control Architecture. . . . . . . . . . . . . . . . . . . . . . 102 Looking at the Control Authoring Model. . . . . . . . . . . . . . . . . . . . . . 105 Using a Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 112 Dissecting Common Controls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 114 Using the Database Control. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 114 Using the EJB Control. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 120 Using the Web Service Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 123 So, What’s Next? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 134 ■CHAPTER 7 Working with Beehive Web Services and JSR 181 . . . . . . 135 Introducing JSR 181 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 135 The JSR 181 Process. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 137 The JSR 181 Architecture Overview. . . . . . . . . . . . . . . . . . . . . . . . . 138 x ■CONTENTS Writing Your First Web Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 139 Writing the Web Service. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 139 Deploying the Web Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 140 Testing the Web Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 140 Exposing a Web Service from the Bookstore Application . . . . . . . . . . . . 141 Writing the Web Service. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 141 Setting Up to Run the Web Service. . . . . . . . . . . . . . . . . . . . . . . . . . 144 Deploying the Web Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 145 Looking at the WSDL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 146 Running the Web Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 150 So, What’s Next? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 152 ■CHAPTER 8 Using XMLBeans . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 153 What’s XML-Java Binding? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 153 XMLBeans As an XML-Java Binding Technology . . . . . . . . . . . . . . 155 XMLBeans Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 155 Data Types in XMLBeans. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 157 Working with XMLBeans . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 159 Working with an XML Schema . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 159 Generating Java Code from the XML Schema. . . . . . . . . . . . . . . . . 162 Walking Through the Generated XMLBeans Classes . . . . . . . . . . . 163 How to Put Data into the XMLBeans. . . . . . . . . . . . . . . . . . . . . . . . . 164 How to Use Get Data from the XMLBeans. . . . . . . . . . . . . . . . . . . . 165 Using XML Cursors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 165 Working with Cursors. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 166 Working with XML Tokens. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 167 Using XMLBeans and Web Services Together . . . . . . . . . . . . . . . . . . . . . 168 Looking at the XML. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 168 Creating the XML Schema. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 171 So, What’s Next? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 172 ■APPENDIX A Setting Up Your Development Environment . . . . . . . . . . . . . 173 Downloading and Installing the Required Software . . . . . . . . . . . . . . . . . 173 Installing J2SE 5 (JDK). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 173 Installing Ant 1.6.2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 173 Installing Tomcat 5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 174 Downloading and Installing Apache Beehive and XMLBeans . . . . . . . . 174 Installing the Beehive 1.0.3 Binary Distribution . . . . . . . . . . . . . . . 174 Installing the XMLBeans Alpha Binary Distribution. . . . . . . . . . . . . 175 ■CONTENTS xi Working with Tomcat . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 175 Starting Tomcat . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 175 Running the Petstore Sample on Tomcat 5. . . . . . . . . . . . . . . . . . . 176 Deploying the Petstore Sample. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 177 So, What’s Next? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 177 ■APPENDIX B Working with Eclipse and Pollinate . . . . . . . . . . . . . . . . . . . . . 179 What’s Eclipse? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 179 Eclipse Project. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 179 Eclipse Tools Project . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 179 Eclipse Technology Project . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 179 Eclipse SDK. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 180 Downloading and Installing Eclipse . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 180 Using the Eclipse Workbench . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 180 Importing Files . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 181 Processing in the Background. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 181 Setting Up a CVS Repository with Eclipse . . . . . . . . . . . . . . . . . . . . . . . . 183 Creating a New Repository Location in Eclipse. . . . . . . . . . . . . . . . 183 Using the CVS Checkout Wizard . . . . . . . . . . . . . . . . . . . . . . . . . . . . 185 Taking Advantage of the Ant Support. . . . . . . . . . . . . . . . . . . . . . . . 185 Downloading and Installing Pollinate . . . . . . . . . . . . . . . . . . . . . . . . . . . . 187 Installing Pollinate from the Update Site . . . . . . . . . . . . . . . . . . . . . 187 Installing Pollinate from a ZIP File. . . . . . . . . . . . . . . . . . . . . . . . . . . 188 Creating a New Beehive Project in Eclipse . . . . . . . . . . . . . . . . . . . . . . . 188 So, What’s Next? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 189 ■APPENDIX C Contributing to Beehive and XMLBeans . . . . . . . . . . . . . . . . . 191 Subscribing to Lists . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 191 Beehive Lists. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 192 XMLBeans Lists. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 193 Contributing Code . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 193 Contributing to Beehive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 193 Contributing to XMLBeans. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 194 Grab Bag of Links . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 195 So, What’s Next? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 195 ■INDEX . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 197 Foreword T ools are the lifeblood of progress. Vision, discovery, and serendipity typically help identify the goal. However, to get to the goal in an efficient, scalable, and repeatable manner, we need to have appropriate tools. When applied to software development, it is easy to see that we as an industry can hope to achieve our goals of radical improvements in developer productivity, interoperability, main- tainability, and reuse only if we create the appropriate development and deployment tools. The Apache Beehive framework and the XMLBeans toolset play a key role in the march toward better enterprise software. Their importance is magnified because of their credentials—Apache in the open-source juggernaut and XML in the Web Services and Service-Oriented Architecture (SOA) avalanche. This book by Kunal Mittal and Srinivas Kanchanavally provides a simple and practical guide for using these two tools. It contains easy-to-read, interesting tutorials and use cases that you can immediately leverage in software development projects. Dr. Rajiv Gupta Entrepreneur, technologist, and Web Services pioneer with E-Speak at HP xiii