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Copyright

Many of the designations used by manufacturers and sellers to distinguish their products are claimed as trademarks. Where those designations appear in this book, and Addison-Wesley was aware of a trademark claim, the designations have been printed with initial capital letters or in all capitals.

The author and publisher have taken care in the preparation of this book, but make no expressed or implied warranty of any kind and assume no responsibility for errors or omissions. No liability is assumed for incidental or consequential damages in connection with or arising out of the use of the information or programs contained herein.

Unless otherwise noted, the opinions presented in this book are those of the author. They should not be construed as the positions of any organization with which he may be affiliated .

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Library of Congress Cataloging-in-Publication Data

Rawlins, Michael C.

Using XML with legacy business applications / Michael C. Rawlins.

p. cm.

ISBN 0-321-15494-0 (Paperback : alk. paper)

1. XML (Document markup language) 2. Business ”Computer programs. I. Title.

QA76.76.H94R375 2003

005.7'2 ”dc21

2003010094

Copyright 2004 by Pearson Education, Inc.

All rights reserved. No part of this publication may be reproduced, stored in a retrieval system, or transmitted, in any form, or by any means, electronic, mechanical, photocopying, recording, or otherwise, without the prior consent of the publisher. Printed in the United States of America. Published simultaneously in Canada.

For information on obtaining permission for use of material from this work, please submit a written request to:

Pearson Education, Inc.

Rights and Contracts Department

75 Arlington Street, Suite 300

Boston, MA 02116

Fax: (617) 848-7047

Text printed on recycled paper

1 2 3 4 5 6 7 8 9 10 ”CRS ”0706050403

First printing, August 2003

Dedication

This book is dedicated to all of the small to medium enterprises and others who are still waiting to see the benefits of XML

and

to Dick, Don't Panic!


Advance Praise for Using XML with Legacy Business Applications

This volume offers relentlessly pragmatic solutions to help your business applications get the most out of XML, with a breezy style that makes the going easy. Mike has lived this stuff; he has a strong command of the solutions and the philosophy that underlies them.

”Eve Maler
XML Standards Architect
Sun Microsystems

Unlike other books that simply cover XML standards and specifications, this book shows you how to actually use XML to solve real-world problems. Developers trying to see through all the hype and discover the real utility of XML will finally appreciate having a book that uses industrial-strength examples to make it all crystal clear.

”Steve Vinoski
Chief Engineer, Product Innovation
IONA Technologies

The single most clear and concise discussion of XML for business messaging I have ever seen! The book is a must for anyone faced with integrating XML into business applications at the code level.

”R.T. Crowley
Senior Vice President, Research Triangle Software, Inc.
Chairman of the Board, The Electronic Commerce Institute
Author of EDI: Charting a Course to the Future

I don't know Mike Rawlins but I can tell by reading this book that he has a teacher's instinct. As any good teacher would, Mr. Rawlins uses a simple problem to reveal a complex body of material. In this case, the easily stated problem is file conversion and the rich, well-illuminated subject is XML. This book gives programmers a clear, well- marked path to XML proficiency.

”Joseph Maguire Consultant, Author, Trainer
Patterns & Practices Columnist, Smart Solutions Magazine.

Michael Rawlins handily demystifies the complexities of XML technologies while stepping us in detail through XML solutions to legacy application integration problems, designed around real-world business scenarios. He has also produced a thoroughly enjoyable book that is fun to read ”outstanding.

”Daniel Appelquist
Senior Technical Architect at Vodafone
Author of XML and SQL: Developing Web Applications