book

The Definitive Guide to SOA: Oracle® Service Bus, SECOND EDITION

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

September 2008

Intermediate to advanced

536 pages

15h 36m

English

Apress

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About the Oracle Service BusWhat's New in OSB 10.3?Who This Book Is ForHow This Book Is StructuredDownloading the CodeContacting the Authors
The Problems We Face TodayEarly ESBsModern SolutionsEnter Oracle Service BusWon't This Lock Me into Oracle Technologies?Why Buy an Enterprise Service Bus?Summary
Installing the SoftwareUsing a Single WorkSpace Studio IDEConfiguring WorkSpace StudioSummary

Service MediationCreating and Deploying a Web ServiceSummary
Message Flow OverviewGoodbye World!Summary
Why Learn About WSDL?WSDL BasicsWSDL Best PracticesVisualizing Documents from SchemasSummary
Scenario 1: User Requests a Product CatalogScenario 2: User Orders a ProductSummary
Synchronous InvocationAsynchronous InvocationParallel Calls with Split-JoinSummary
Service Type and Transport Protocol OverviewSOAP with WSDLSOAP Without WSDLXML with WSDLXML Without WSDLMessaging Service TypesTransport-Typed ServicePOJOsSummary
Web Services Reliable MessagingService ThrottlingService PoolingSOAP with AttachmentsSummary
MonitoringReportingSummary
An Overview of SOA SecurityHow OSB Fits into an SOA Security ArchitectureOSB End-to-End Security ConfigurationPerformance Trade-Offs Using SecuritySummary
Core ConceptsAdvanced ConceptsArchitectural TransformationNot Just an ESB!Summary
Standards, Standards, and More StandardsWhere Do We Begin?The First ProjectThe Second ProjectSummary
What Is a Service?Service OrientationWhat Is Versioning?Do We Version Services or Operations?Constrained by RealityIf Not Versions, Then What?The Service Life CycleThe Future of ITSummary
Factors That Affect OSB PerformanceTuning an OSB InstanceBest Practices for OSB Proxy DesignXQuery and XPath OptimizationsScalability Considerations for an ESBHandling Large Messages with Content StreamingFlow-Control Patterns Using OSBSummary
DeploymentOSB Domains and ClustersSummary
Introduction to Custom TransportsThe Sample Socket TransportBuilding a Custom TransportAdvanced Custom Transport TopicsSummary
SecurityAdministrationMessaging and ProtocolsXML, XQuery, and XSLTMiscellaneousSummary

Content preview from The Definitive Guide to SOA: Oracle® Service Bus, SECOND EDITION

CHAPTER 5A Crash Course in WSDL

In this chapter, you'll learn the basics of creating a Web Services Description Language (WSDL) file by hand. Our goal in this chapter is to provide you with some best practices and quickly get you up to speed with the language. If you're already comfortable with WSDL, you can safely skip this chapter. If you're a WSDL/XML Schema purist, then reading this chapter will only upset you, because we won't take the time to cover the esoteric capabilities of the language here.

WSDL is a nontrivial language. To express the depth and breadth of the language fully is beyond the scope of this book. In this chapter, we'll focus on a WSDL format that's most amenable to creating highly interoperable web services: document-centric ...