a0146 the definitive guide to soa oracle service bus second editio morebook vn 224

Jeff Davies, David Schorow, Samrat Ray, and David Rieber The Definitive Guide to SOA SECOND EDITION... The Definitive Guide to SOA: Oracle Service Bus, Second EditionCopyright © 2008 by

Jeff Davies, David Schorow, Samrat Ray, and David Rieber

The Definitive Guide

to SOA

SECOND EDITION

The Definitive Guide to SOA: Oracle Service Bus, Second Edition

Copyright © 2008 by Jeff Davies, David Schorow, Samrat Ray, and David Rieber

All rights reserved No part of this work may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopying, recording, or by any information storage or retrieval system, without the prior written permission of the copyright owner and the publisher.

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Contents at a Glance

Foreword xiii

About the Authors xv

About the Technical Reviewer xvii

Acknowledgments xix

Introduction xxi

■ CHAPTER 1 Why Use a Service Bus? 1

■ CHAPTER 2 Installing and Configuring the Software 15

■ CHAPTER 3 Creating a Hello World Service 27

■ CHAPTER 4 Message Flow Basics 51

■ CHAPTER 5 A Crash Course in WSDL 69

■ CHAPTER 6 Intermediate Message Flows 93

■ CHAPTER 7 Asynchronous Messaging 119

■ CHAPTER 8 Service Types and Transports 143

■ CHAPTER 9 Advanced Messaging Topics 187

■ CHAPTER 10 Reporting and Monitoring 205

■ CHAPTER 11 SOA Security 225

■ CHAPTER 12 Planning Your Service Landscape 265

■ CHAPTER 13 Implementing Your Service Landscape 303

■ CHAPTER 14 Versioning Services 341

■ CHAPTER 15 Performance: Tuning and Best Practices 359

■ CHAPTER 16 Administration, Operations, and Management 377

■ CHAPTER 17 Custom Transports 399

■ CHAPTER 18 How Do I ? 467

■ INDEX 485

iii

Foreword xiii

About the Authors xv

About the Technical Reviewer xvii

Acknowledgments xix

Introduction xxi

■ CHAPTER 1 Why Use a Service Bus? 1

The Problems We Face Today 1

Point-to-Point Integrations 1

Tight Coupling 4

Enterprise Application Integration 5

Early ESBs 8

Modern Solutions 8

Loose Coupling 8

Location Transparency 9

Mediation 9

Schema Transformation 9

Service Aggregation 9

Load Balancing 10

Enforcing Security 10

Monitoring 10

Configuration vs Coding 10

Enter Oracle Service Bus 11

Loose Coupling 11

Location Transparency 11

Mediation 11

Schema Transformation 11

Service Aggregation 12

Load Balancing 12

Enforcing Security 12

Monitoring 12

Configuration vs Coding 12

v

<service>, 79

<types>

custom data types, 76–77

importing XML schemas, 77–78

minOccurs and maxOccurs, 77

native data types, 76

overview, 75

best practices

avoiding dependency trap, 81–85

document-centric, literal style, 85–87

overview, 80

reference types from XML schema

files, 80–81

definitions, 75

importing from URL, 469

namespaces

default namespace, 73–74

overview, 71–73

target namespace, 74–75

overview, 70–71

reasons to learn, 69

Simple Object Access Protocol (SOAP)

with, 144–145

Simple Object Access Protocol (SOAP)

without, 145–146

support for custom transport,

461–463

visualizing documents from schemas

overview, 87

qualified and unqualified attributes,

91–92

qualified and unqualified elements,

87–91

XML with, 146–150

XML without, 150

WSDL service type, 143

WsdlcTask, Ant, 22

<wsdl:input> element, 259

wsdlLocation attribute, @WebService

annotation, 35

<wsdl:operation> element, 259

WSDL/Policy/MFL/Schema/Proxy,

retrieving via HTTP, 477–478

<wsdl:port> element, 283

<wsdlsoap:binding> section, 35

WS-Policies custom, 237–238 standards, 232–235 WS-Policy, 233 wsp:Policy element, 260

<wsp:Policy> element, 234 WSRM (Web Services Reliable Messaging), 187–192

applying policy, 189–192 overview, 187

setting up, 187–189 WSRM protocol, 400 WSRM_SB project, 187 WSS (Web Services Security), 228 WSS scenarios, 239–240

WSS SOAP header, 229 wsse:Security header, 236 wsu:Id attribute, 260

■ X

xf:helloToGoodbye function, 66 XML, 61

converting into string using XQuery, 481

as messaging type, 163, 166, 172 without WSDL, 150

with WSDL, 146–150 XML manipulation, 367 XML nodes, retrieving namespaces of, 481 XML Schema Document (XSD), 8

XML schemas, 11 importing, 77–78 reference types from, 80–81 XML variables, converting String values into, 481

XMLBean classes, 405, 417 XMLBean schemas, 405 XmlObject class, 436 XmlObject interface, 423 XMLObject representation, 442 XmlObject Source interface, 441 XmlObjectSource Source interface, 440–441

XmlObject.type attribute, 423 xmlResponse variable, 480 XMLWSDLService proxy service, 147

■ I N D E X 507

XPath, optimizations, 368–370

<XPath> link, 108

XQuery, 61

converting String values into XML

variables using, 481

converting XML into string using, 481

optimizations, 368–370

retrieving SOAP Headers using, 475–476

retrieving version numbers from

namespaces, 481–482

testing for null values, 482

XQuery resource, 252–253

XQuery Transformation tool, 170 XSD files, 288

xsd: prefix, 73 XSLT (eXtensible Stylesheet Language Transformation), 11

xs:string argument, 65 XXXSource object, 441

■ I N D E X

508