Mashup Patterns: Designs and Examples for the Modern Enterprise

433 Pages·2009·6.858 MB·English

by  Ogrinz, Michael

Praise for Mashup Patterns
“Enterprise architects think in high-level architectural patterns. This book cuts
through the mashup marketing fluff and gets right down to presenting patterns
as a way to analyze and solve enterprise problems using mashups.”
—John Crupi, Chief Technology Officer of JackBe and Coauthor of Core J2EE
Patterns
“Mashups offer an opportunity to rapidly deliver value to the business, either
on top of an existing internal corporate SOA or on common freely available
Internet services. In this work, Ogrinz guides the reader through frequently
encountered scenarios in the mashup space. The examples alone will help you
think laterally about the problems facing your business and new ways of solv-
ing them.”
—Kevin P. Davis, Ph.D., Software Architect
“Mashup Patterns is an excellent, comprehensive treatment of a subject increas-
ingly central to corporate IT management. With the benefit of his extensive
software architecture experience, Michael is able to provide a wide array of
mashup solutions to real world data wrangling problems. He clearly explains
how to successfully apply mashup patterns and avoid going down anti-pattern
rabbit holes. This book is a must-have for developers venturing into the vast
and rapidly expanding enterprise mashup space.”
—Daniel Leuck, CEO, Ooi
“Michael Ogrinz takes a broad view of mashups, focusing on their growing
(and potentially revolutionary) role for harvesting and repurposing data within
the modern information-driven enterprise. Don’t look for code or programming
tips here, because you won’t find them. What you’ll find instead are inspiring
examples, clever ideas, and new ways to use the data already hiding in your
business and in the Web around you.”
—Rob Miller, Associate Professor of Computer Science, Massachusetts Institute of
Technology
“To a user, a mashup has all the personal qualities of an advanced form of
spreadsheet, except it’s not limited only to figures; this is only a fraction of the
value that enterprises can gain from deploying mashups as well-managed
sophisticated tools. Michael has done us all a service by producing this book as
a great step forward in helping IT and business managers to access this value.”
—Andy Mulholland, Global Chief Technology Officer, Capgemini
“Mike Ogrinz has done an excellent job with thorough analysis of the various
mashup patterns. What makes this book very exciting is the timing, when
everyone wants to know more about mashups as well as the wide range of audi-
ence this book caters to. From director to engineer, everyone can find examples
relevant to them. Congrats, Mike, on a job well done!”
—Sona Srinivasan, IT Engineer/ITG Architect, Cisco Systems
“Michael Ogrinz does for mashups what the illustrious Gang of Four (Gamma,
Helm, Johnson, and Vlissides) did for object-oriented software design. He starts
with a buzzword-free explanation of what mashups are and how they matter to
the enterprise. He then presents a taxonomy of ready-to-implement design pat-
terns, chock-full of concrete examples. Finally, he includes an appendix of real-
world case studies, ranging from a Web 2.0 startup to the Defense Intelligence
Agency. This clear, readable, no-nonsense book is a must-have for enterprise IT
workers who are ready to embrace the brave new world of Enterprise 2.0.”
—Daniel Tunkelang, Ph.D., Chief Scientist, Endeca
Mashup Patterns
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Mashup Patterns
Designs and Examples for the
Modern Enterprise
Michael Ogrinz
Upper Saddle River, NJ • Boston • Indianapols • San Francisco
New York • Toronto • Montreal • London • Munich • Paris • Madrid
Capetown • Sydney • Tokyo • Singapore • Mexico City
Many of the designations used by manufacturers and sellers to distinguish their products Editor-in-Chief
are claimed as trademarks. Where those designations appear in this book, and the pub- Mark Taub
lisher was aware of a trademark claim, the designations have been printed with initial
Acquisitions Editor
capital letters or in all capitals.
Trina MacDonald
The author and publisher have taken care in the preparation of this book, but make no
Development Editor
expressed or implied warranty of any kind and assume no responsibility for errors or
Songlin Qiu
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. Managing Editor
John Fuller
The publisher offers excellent discounts on this book when ordered in quantity for bulk
purchases or special sales, which may include electronic versions and/or custom covers Project Editor
and content particular to your business, training goals, marketing focus, and branding Anna V. Popick
interests. For more information, please contact:
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[phone]
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For sales outside the United States please contact:
Proofreader
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Cover Designer
Visit us on the Web: informit.com/aw Chuti Prasertsith
Library of Congress Cataloging-in-Publication Data Composition
Ogrinz, Michael. Rob Mauhar
Mashup patterns : designs and examples for the modern enterprise / Michael Ogrinz.
p. cm.
Includes index.
ISBN 978-0-321-57947-8 (pbk. : alk. paper)
1. Web 2.0. 2. Mashups (World Wide Web) 3. Business enterprises—Technological
innovations. 4. Application software—Development. I. Title.
TK5105.88817.O57 2009
005.7'2—dc22
2008053762
Copyright © 2009 Pearson Education, Inc.
All rights reserved. Printed in the United States of America. This publication is protected
by copyright, and permission must be obtained from the publisher prior to any prohibited
reproduction, storage in a retrieval system, or transmission in any form or by any means,
electronic, mechanical, photocopying, recording, or likewise. For information regarding
permissions, write to:
Pearson Education, Inc.
Rights and Contracts Department
501 Boylston Street, Suite 900
Boston, MA 02116
Fax [phone]
ISBN-13: 978- 0-321-57947-8
ISBN-10: 0-321-57947-X
Text printed in the United States on recycled paper at R.R. Donnelley in Crawfordsville,
Indiana.
First printing, March 2009
To my wife, Monica,
and our two little mashups,
Meghan and Alexis
This page intentionally left blank
Contents
Preface. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xiii
Acknowledgments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xix
About the Author. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xxiii
About the Cover Picture. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xxv
Chapter 1: Understanding Mashup Patterns . . . . . . . . . . . . . . . . . . . . . . . . . 1
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Web 2.0 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Enterprise 2.0 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
The Birth of Mashups . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Types of Mashups . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Acquiring Data from the Web . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
The Long Tail . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Meeting User Demand . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Mashups and the Corporate Portal . . . . . . . . . . . . . . . . . . . . . . . . 20
Mashups and Service-Oriented Architecture . . . . . . . . . . . . . . . . . 22
Mashups and EAI/EII . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Mashups and Software as a Service . . . . . . . . . . . . . . . . . . . . . . . . 25
Mashups and the User . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
A Patterns Primer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
The Fragility Factor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
The Future of Mashups . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Chapter 2: Mashup Patterns Terminology . . . . . . . . . . . . . . . . . . . . . . . . . 33
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
Semantics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
Structure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
Where’s the UML? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
Chapter 3: Core Activities . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
Support for Open Standards . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
ix