SOA-BASED ENTERPRISE INTEGRATION: A STEP-BY-STEP GUIDE TO SERVICES- ROSHEN W. /

Implement Service-Oriented Architecture Across the Enterprise

Transform your existing IT infrastructure into a unified, highly scalable computing landscape with the latest SOA integration technologies. Using straightforward explanations and code samples, SOA-Based Enterprise Integration explains how to deploy service-oriented connectivity solutions that fit your organization's needs. Get details on configuring packaged software from SAP, Oracle, Siebel, PeopleSoft, and IBM, integrating mainframe applications, and developing web services. You'll also learn how to implement a custom Enterprise Service Bus (ESB), overcome format and protocol mismatches, and optimize QoS.

Connect applications using common databases, sockets, and RPCs
Reuse code with distributed objects and ORBs
Manage distributed objects and applications using CORBA and Java RMI
Use asynchronous messaging to handle large transaction volumes
Overcome heterogeneity and mismatch issues using web services
Perform content- and context-based routing with ESB technology
Integrate mainframe and packaged applications using adapters and brokers
Work with XML, SOAP, WSDL, and UDDI
Develop web services with Java/J2EE
Compose business processes using BPEL

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

Table of Contents

Foreword xiii

Preface xvii

Acknowledgments xix

Part 1 Introduction 1

Chapter 1 Introduction to the Book 3

Book Objectives 4

Intended Audience 5

Organization of the Book 6

Conclusion 15

Chapter 2 Overview and Basic Concepts 17

Services in Software 17

Business Problem Addressed by SOA 21

Definitions 25

Some Basic Concepts 29

Conclusion 32

Part 2 Evolution Of Integration Patterns 33

Chapter 3 Sockets and Data Sharing 35

File-Based Data Sharing 35

Common Database 40

Sockets 43

Conclusion 48

Chapter 4 Remote Procedure Call (RPC) 49

Three Types of Function Calls 51

Types of Functions 53

Restricted RPC, or Doors 58

Remote Procedure Call (RPC) 58

Port Mapper 65

RPC 65

Conclusion 66

Chapter 5 Distributed Objects and Application Servers 69

CORBA Overview 71

CORBA Model 72

Sample CORBA Applications 83

Application Servers 90

Conclusion 92

Chapter 6 Messaging 95

Overview 96

Channels 100

Messages 101

End Points 104

Conclusion 111

Part 3 Service-Oriented Architecture-Based Integration 113

Chapter 7 Web Services Overview 115

Review of Part II (Chapters 3-6) 115

Heterogeneity Problem 117

XML 120

SOAP 122

WSDL 124

UDDI Registry 128

WS-I Basic Profile 130

Conclusion 131

Chapter 8 Enterprise Service Bus 133

Routing and Scalable Connectivity 134

Protocol Transformation 138

Data/Message Transformation 139

Core Functionalities 140

Optional Features 143

Logical Components 144

Deployment Configurations 147

Types of ESBs 150

Practical Usage Scenarios 153

Conclusion 160

Part 4 Integrating Existing Applications 163

Chapter 9 Integrating Mainframe Applications 165

Mainframe Application Types167

Preliminaries 169

Summary of Point-to-Point Integration 185

ESB-Based Integration Options 185

Conclusion 194

Chapter 10 Integrating Package Applications 197

Adapters 199

J2EE Connector Architecture (JCA) 201

Introduction to SAP and Its Interfaces 205

WebSphere Adapter for SAP Software 206

Exposure as Web Services 209

Conclusion 209

Part 5 Understanding and Developing Web Services 211

Chapter 11 XML 213

Overview 214

XML Namespaces 215

XML Schemas 217

XML Processing/Parsing Models 221

Conclusion 232

Chapter 12 SOAP 233

SOAP Messages 233

SOAP Elements 235

SOAP Attributes and Processing Model 238

SOAP Message Exchange Types 242

SOAP HTTP Binding 245

Conclusion 249

Chapter 13 WSDL 251

Overview 252

Containment Structure 256

Elements of Abstract Interface Description 257

Elements of the Implementation Part 262

Logical Relationships 264

SOAP Binding 264

Conclusion 269

Chapter 14 UDDI Registry 271

Overview and Basic Data Model 272

tModel 275

Categorization and Identification Schemes 278

Binding Template 280

Use of WSDL in the UDDI Registry 282

Summary of UDDI APIs 285

Commercial Products 288

Conclusion 289

Chapter 15 Web Services Implementation 291

Implementation Choices 292

Building Web Service Clients 296

Building Web Services 303

Bottom-Up Approach 305

Commercial Tools 306

Conclusion 308

Chapter 16 Integration Through Service Composition (BPEL) 311

Overview 313

Detailed Description 315

Practical Example 323

Conclusion 330

Part 6 Appendixes 331

References 333

Glossary 337

Index 347

384 pages, Hardcover

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