Service design patterns : fundamental design solutions for SOAP/WSDL and restful Web services

Foreword by Martin Fowler xi Foreword by Ian Robinson xiii Preface xv Acknowledgments xxiii About the Author xxv   Chapter 1: From Objects to Web Services 1 What Are Web Services? 2 From Local Objects to Distributed Objects 3 Why Use Web Services? 6 Web Service Considerations and Alternatives 7 Services and the Promise of Loose Coupling 9 What about SOA? 10 Summary 11   Chapter 2: Web Service API Styles 13 Introduction 13 Design Considerations for Web Service APIs 14 RPC API 18 Message API 27 Resource API 38   Chapter 3: Client-Service Interactions 51 Introduction 51 Request/Response 54 Request/Acknowledge 59 Media Type Negotiation 70 Linked Service 77   Chapter 4: Request and Response Management 83 Introduction 83 Service Controller 85 Data Transfer Object 94 Request Mapper 109 Response Mapper 122   Chapter 5: Web Service Implementation Styles 131 Introduction 131 Design Considerations for Web Service Implementation 132 Transaction Script 134 Datasource Adapter 137 Operation Script 144 Command Invoker 149 Workflow Connector 156   Chapter 6: Web Service Infrastructures 165 Introduction 165 Service Connector 168 Service Descriptor 175 Asynchronous Response Handler 184 Service Interceptor 195 Idempotent Retry 206 A Quick Review of SOA Infrastructure Patterns 220   Chapter 7: Web Service Evolution 227 Introduction 227 What Causes Breaking Changes? 228 Common Versioning Strategies 232 Single-Message Argument 234 Dataset Amendment 237 Tolerant Reader 243 Consumer-Driven Contracts 250 How the Patterns Promote or Hinder Service Evolution 264   Appendix: Reference to External Patterns 269   Glossary 277 Bibliography 297 Index 303