Web Services Platform Architecture: SOAP, WSDL, WS-Policy, WS-Addressing, WS-BPEL, WS-Reliable Messaging, and More: SOAP, WSDL, WS-Policy, WS-Addressing, WS-BPEL, WS-Reliable Messaging, and More - Softcover

Weerawarana, Sanjiva; Curbera, Francisco; Leymann, Frank; Storey, Tony; Ferguson, Donald F.

Softcover

ISBN 10: 0131488740 ISBN 13: 9780131488748

Publisher: Pearson, 2005

Synopsis

A guide to Web services covers such topics as service orientation, UDDI, transactions, security, BPEL, and WS-MetadataExchange.

About this title

About the Author

This book was a team effort by the folks at IBM who have been working on designing and building the Web services platform. The lead authors of this book—Sanjiva, Francisco (Paco), Frank, Tony, and Don—wrote parts of the book and coordinated contributions from the others. We'll start with descriptions of the five lead authors and then talk about the others who contributed.

Sanjiva Weerawarana received a Ph.D. in computer science from Purdue University in 1994. After a few years at Purdue as visiting faculty, he joined IBM Research in 1997, where he is a research staff member in the Component Systems Group and a member of the IBM Academy of Technology. Sanjiva's research interests are in component-oriented programming in general and specifically about component-oriented distributed computing architectures. He got involved with the Web services stack early by contributing to SOAP 1.1 and then by building the first implementation of it, which was later released to the Apache Software Foundation to start the Apache SOAP open source project. After that, Sanjiva cocreated WSDL (with Paco) and coauthored many Web services specifications, including WS-Addressing, WS-MetadataExchange, BPEL4WS, and WS-Resource Framework. In addition to developing specifications, Sanjiva has implemented many of them, in addition to technologies that are related to Web services, including Apache WSIF and the Web Services Gateway. He has been an active contributor to IBM's technical strategy for Web services and has helped coordinate IBM's Web services activities for the past five years. After Web services, Sanjiva's second love is open source, where he's a member of the Apache Software Foundation and the cofounder of the Lanka Software Foundation, an open source foundation in Sri Lanka. In his leisure time, he teaches at the University of Moratuwa, Sri Lanka, where he lives and telecommutes to his job in New York.

Francisco Curbera is a research staff member and manager of the Component Systems Group at the IBM T.J. Watson Research Center in Hawthorne, New York, where he has worked since 1993. He holds a Ph.D. in computer science from Columbia University. His current research interests are in the use of component-oriented software in distributed computing system. In the past, he has worked in the design of algorithms and tools for processing XML documents, and in the use of markup languages for automatic UI generation. He has worked in different Web services specifications since the initial Web services concept surfaced in late 1999, first as one of the original authors of the Apache SOAP implementation of SOAP 1.1, and then as coauthor of WSDL 1.1, BPEL4WS, WS-Policy, and WS-PolicyAttachments, WS-Addressing, WS-MetadataExchange, and other Web services specifications. He currently represents IBM in the Web Services Addressing working group, standardizing WS-Addressing at the W3C, and in the Web Services Business Process technical committee standardizing BPEL4WS at OASIS.

Frank Leymann is a professor of computer science and the director of the Institute of Architecture of Application Systems at the University of Stuttgart, Germany. His research interests include service-oriented computing, workflow and business process management, transaction processing, and architecture patterns. Before taking over as a professor, Frank worked for two decades at IBM Software Group in the development of database and middleware products. During that time, he built tools that support conceptual and physical database design for DB2, as well as performance prediction and monitoring, co-architected a repository system, built both a universal relation system and a complex object database system on top of DB2, and was coarchitect of the MQSeries family. In parallel to that, Frank has worked continuously since the late 1980s on workflow technology and has become the father of IBM's workflow product set. As an IBM Distinguished Engineer and

From the Back Cover

"Other books claim to present the complete Web services platform architecture, but this is the first one I've seen that really does. The authors have been intimately involved in the creation of the architecture. Who better to write this book?"

Anne Thomas Manes, Vice President and Research Director, Burton Group

"This is a very important book, providing a lot of technical detail and background that very few (if any) other books will be able to provide. The list of authors includes some of the top experts in the various specifications covered, and they have done an excellent job explaining the background motivation for and pertinent details of each specification. The benefit of their perspectives and collective expertise alone make the book worth reading."

Eric Newcomer, CTO, IONA Technologies

"Most Web services books barely cover the basics, but this book informs practitioners of the "real-world" Web services aspects that they need to know to build real applications. The authors are well-known technical leaders in the Web services community and they helped write the Web services specifications covered in this book. Anyone who wants to do serious Web services development should read this book."

Steve Vinoski, Chief Engineer, Product Innovation, IONA Technologies

"There aren't many books that are as ambitious as this one is. The most notable distinguishing factor of this book is that the authors have tried to pair down the specifications for the user and rather than focusing on competing specifications, they focus on complementary ones. Nearly every chapter provides a business justification and need for each feature discussed in the Web services stack. I would recommend this book to developers, integrators, and architects."

Daniel Edgar, Systems Architect, Portland General Electric

"Rarely does a project arrive with such a list of qualified and talented authors. The subject matter is timely and significant to the industry. "

Eric Newcomer, author of Understanding SOA with Web Services andUnderstanding Web Services and Chief Technology officer, IONA

The Insider's Guide to Building Breakthrough Services with Today'sNew Web Services Platform

Using today's new Web services platform, you can build services that are secure, reliable, efficient at handling transactions, and well suited to your evolving service-oriented architecture. What's more, you can do all that without compromising the simplicity or interoperability that made Web services so attractive. Now, for the first time, the experts who helped define and architect this platform show you exactly how to make the most of it.

Unlike other books, Web Services Platform Architecture covers the entire platform. The authors illuminate every specification that's ready for practical use, covering messaging, metadata, security, discovery, quality of service, business-process modeling, and more. Drawing on realistic examples and case studies, they present a powerfully coherent view of how all these specifications fit togetherand how to combine them to solve real-world problems.

• Service orientation: Clarifying the business and technical value propositions

• Web services messaging framework: Using SOAP and WS-Addressing to deliver Web services messages

• WSDL: Documenting messages and supporting diverse message interactions

• WS-Policy: Building services that specify their requirements and capabilities, and how to interface with them

• UDDI: Aggregating metadata and making it easily available

• WS-MetadataExchange: Bootstrapping efficient, customized communication between Web services

• WS-Reliable Messaging: Ensuring message delivery across unreliable networks

• Transact

Excerpt. © Reprinted by permission. All rights reserved.

Preface

Preface

"Web services are a mess!"

"There are more than 150 Web services (WS-*) specs!"

"Simple? This stuff is more complicated than CORBA!"

"There is no architecture; just a bunch of competing specs!"

"These specs are denser than plutonium!"

Those are some of the statements we've heard from people—including our own colleagues—about Web services. That's why we wrote this book: to show that the WS-* platform is not a random walk through a space of WS-* specifications but rather an organized, structured architecture with well-defined design and architectural objectives. We apply these objectives when working on WS-* specifications and when deciding whether or not we need a new specification in a certain area.

The objective of this book is to present the cohesive, structured architecture of the Web services platform that we have been helping to define. The architecture is designed to enable loosely coupled interaction between services with business-quality reliability, security, and transactional capabilities. We start by presenting some of the business world–driving forces that are motivating the creation of the service-oriented computing platform (Chapter 1, "Service-Oriented Architectures"). Then we focus on Web services as a realization of this service-oriented computing platform and indicate which specifications contribute to the platform (Chapter 3, "Web Services"). After that, we consider each major part of the platform and offer the insight that went into defining the specifications that govern that component. We cover the messaging framework, describing metadata, reliable interaction, security, and service composition in different parts of the book. Before concluding, we consider two case studies to illustrate how the Web services platform can address both intranet and extranet integration scenarios. In the concluding part, we summarize the platform and give our perspectives on why the integrated architecture we present makes sense and will "win" the standards battle. Finally, we present our thoughts on the future of the Web services platform.

At the end of this book, you should no longer feel that Web services has no architecture or that the architecture is hidden somewhere between 150+ WS-* specifications. You might not agree with our choice of components that comprise the architecture, but we chose the set based on the fact that those were designed from the ground up to work together to solve a single problem: that of being a ubiquitous platform for integrating heterogeneous systems to enable rich business communication.

Who Should Read This Book?

We wrote this book for technical professionals and students. Although Chapter 2, "Background," briefly introduces the requisite background material about major XML technologies, we assume that you have a fair grasp of those technologies coming into this book. Developers who want to understand the overall Web services platform will appreciate this book. However, this is not a "developer book" in the sense of providing detailed, code-level understanding. That was not our objective. Architects, consultants, and technically oriented management should find this book useful. Students who have already attended introductory courses in distributed systems or database systems will be able to understand the Web services platform.

© Copyright Pearson Education. All rights reserved.

Edition details

• Publisher: Pearson
• Publication date: 2005
• Language: English
• ISBN 10: 0131488740
• ISBN 13: 9780131488748
• Binding: Paperback
• Number of pages: 456