SOA-based enterprise integration : a step-by-step guide to services-based application integration

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Foreword by Ray Harishankar, IBM Fellow

"There are many books on the market on the topic of SOA and SOA's business and technology value. This book focuses on one of the key technical values of SOA and does an excellent job of describing SOA-based application integration by clarifying the relationship and patterns of SOA with other integration technologies in a distributed computing environment." Sandra Carter, IBM Vice President for SOA, BPM, and WebSphere Marketing

"Services Oriented Architectures present many challenges today in the integration of existing systems and new systems, along with many times, old legacy mainframe applications. This book successfully addresses many of the complexities we see in the integration of SOA and mainframe legacy applications, presenting options and approaches to integrate the applications with the rest of the enterprise. The author takes a clearly defined pattern-based approach discussing the advantages, tools and methods. Readers will benefit from the insights in this book whether they play the architect role or a developer role on a SOA project."Sue Miller-Sylvia, IBM Fellow and Application Development Service Area Leader

Author Notes

Waseem Roshen, Ph.D., is a senior IT architect in the Enterprise Architecture and Technology Center of Excellence at IBM.

Foreword	p. xiii
Preface	p. xvii
Acknowledgments	p. xix
Part 1 Introduction	p. 1
Chapter 1 Introduction to the Book	p. 3
Book Objectives	p. 4
Intended Audience	p. 5
Organization of the Book	p. 6
Conclusion	p. 15
Chapter 2 Overview and Basic Concepts	p. 17
Services in Software	p. 17
Business Problem Addressed by SOA	p. 21
Definitions	p. 25
Some Basic Concepts	p. 29
Conclusion	p. 32
Part 2 Evolution Of Integration Patterns	p. 33
Chapter 3 Sockets and Data Sharing	p. 35
File-Based Data Sharing	p. 35
Common Database	p. 40
Sockets	p. 43
Conclusion	p. 48
Chapter 4 Remote Procedure Call (RPC)	p. 49
Three Types of Function Calls	p. 51
Types of Functions	p. 53
Restricted RPC, or Doors	p. 58
Remote Procedure Call (RPC)	p. 58
Port Mapper	p. 65
RPC	p. 65
Conclusion	p. 66
Chapter 5 Distributed Objects and Application Servers	p. 69
CORBA Overview	p. 71
CORBA Model	p. 72
Sample CORBA Applications	p. 83
Application Servers	p. 90
Conclusion	p. 92
Chapter 6 Messaging	p. 95
Overview	p. 96
Channels	p. 100
Messages	p. 101
End Points	p. 104
Conclusion	p. 111
Part 3 Service-Oriented Architecture-Based Integration	p. 113
Chapter 7 Web Services Overview	p. 115
Review of Part II (Chapters 3-6)	p. 115
Heterogeneity Problem	p. 117
XML	p. 120
SOAP	p. 122
WSDL	p. 124
UDDI Registry	p. 128
WS-I Basic Profile	p. 130
Conclusion	p. 131
Chapter 8 Enterprise Service Bus	p. 133
Routing and Scalable Connectivity	p. 134
Protocol Transformation	p. 138
Data/Message Transformation	p. 139
Core Functionalities	p. 140
Optional Features	p. 143
Logical Components	p. 144
Deployment Configurations	p. 147
Types of ESBs	p. 150
Practical Usage Scenarios	p. 153
Conclusion	p. 160
Part 4 Integrating Existing Applications	p. 163
Chapter 9 Integrating Mainframe Applications	p. 165
Mainframe Application Types	p. 167
Preliminaries	p. 169
Summary of Point-to-Point Integration	p. 185
ESB-Based Integration Options	p. 185
Conclusion	p. 194
Chapter 10 Integrating Package Applications	p. 197
Adapters	p. 199
J2EE Connector Architecture (JCA)	p. 201
Introduction to SAP and Its Interfaces	p. 205
WebSphere Adapter for SAP Software	p. 206
Exposure as Web Services	p. 209
Conclusion	p. 209
Part 5 Understanding and Developing Web Services	p. 211
Chapter 11 XML	p. 213
Overview	p. 214
XML Namespaces	p. 215
XML Schemas	p. 217
XML Processing/Parsing Models	p. 221
Conclusion	p. 232
Chapter 12 SOAP	p. 233
SOAP Messages	p. 233
SOAP Elements	p. 235
SOAP Attributes and Processing Model	p. 238
SOAP Message Exchange Types	p. 242
SOAP HTTP Binding	p. 245
Conclusion	p. 249
Chapter 13 WSDL	p. 251
Overview	p. 252
Containment Structure	p. 256
Elements of Abstract Interface Description	p. 257
Elements of the Implementation Part	p. 262
Logical Relationships	p. 264
SOAP Binding	p. 264
Conclusion	p. 269
Chapter 14 UDDI Registry	p. 271
Overview and Basic Data Model	p. 272
tModel	p. 275
Categorization and Identification Schemes	p. 278
Binding Template	p. 280
Use of WSDL in the UDDI Registry	p. 282
Summary of UDDI APIs	p. 285
Commercial Products	p. 288
Conclusion	p. 289
Chapter 15 Web Services Implementation	p. 291
Implementation Choices	p. 292
Building Web Service Clients	p. 296
Building Web Services	p. 303
Bottom-Up Approach	p. 305
Commercial Tools	p. 306
Conclusion	p. 308
Chapter 16 Integration Through Service Composition (BPEL)	p. 311
Overview	p. 313
Detailed Description	p. 315
Practical Example	p. 323
Conclusion	p. 330
Part 6 Appendixes	p. 331
References	p. 333
Glossary	p. 337
Index	p. 347

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Table of Contents