Table of contents

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1.1 Web Service

1.2 Notational Conventions

1.3 WSDL Terminology

2 Component Model

2.1 Definitions

2.1.1 The Definitions Component

2.1.2 XML Representation of Definitions Component

2.1.3 Mapping Definitions' XML Representation to Component Properties

2.2 Interface

2.2.1 The Interface Component

2.2.2 XML Representation of Interface Component

2.2.3 Mapping Interface's XML Representation to Component Properties

2.3 Interface Fault

2.3.1 The Interface Fault Component

2.3.2 XML Representation of Interface Fault Component

2.3.3 Mapping Interface Fault's XML Representation to Component Properties

2.4 Interface Operation

2.4.1 The Interface Operation Component

2.4.2 RPC Style

2.4.3 XML Representation of Interface Operation Component

2.4.4 Mapping Interface Operation's XML Representation to Component Properties

2.5 Message Reference

2.5.1 The Message Reference Component

2.5.2 XML Representation of Message Reference Component

2.5.3 Mapping Message Reference's XML Representation to Component Properties

2.6 Fault Reference

2.6.1 The Fault Reference Component

2.6.2 XML Representation of Fault Reference Component

2.6.3 Mapping Fault Reference's XML Representation to Component Properties

2.7 Feature

2.7.1 The Feature Component

2.7.2 XML Representation of Feature Component

2.7.3 Mapping Feature's XML Representation to Component Properties

2.8 Property

2.8.1 The Property Component

2.8.2 XML Representation of Property Component

2.8.3 Mapping Property's XML Representation to Component Properties

2.9 Binding

2.9.1 The Binding Component

2.9.2 XML Representation of Binding Component

2.9.3 Mapping Binding's XML Representation to Component Properties

2.10 Binding Fault

2.10.1 The Binding Fault Component

2.10.2 XML Representation of Binding Fault Component

2.10.3 Mapping Binding Fault's XML Representation to Component Properties

2.11 Binding Operation

2.11.1 The Binding Operation Component

2.11.2 XML Representation of Binding Operation Component

2.11.3 Mapping Binding Operation's XML Representation to Component Properties

2.12 Binding Message Reference

2.12.1 The Binding Message Reference Component

2.12.2 XML Representation of Binding Message Reference Component

2.12.3 Mapping Binding Message Reference's XML Representation to Component Properties

2.13 Service

2.13.1 The Service Component

2.13.2 XML Representation of Service Component

2.13.3 Mapping Service's XML Representation to Component Properties

2.14 Endpoint

2.14.1 The Endpoint Component

2.14.2 XML Representation of Endpoint Component

2.14.3 Mapping Endpoint's XML Representation to Component Properties

2.15 Definition of the Simple Types Used in the Component Model

2.15.1 string Type

2.15.2 Token Type

2.15.3 NCName Type

2.15.4 anyURI Type

2.15.5 QName Type

2.15.6 boolean Type

2.15.7 int Type

2.16 Equivalence of Components

2.17 Symbol Spaces

2.18 QName resolution

2.19 Comparing URIs

3.1 Using W3C XML Schema Description Language

3.1.1 Importing XML Schema

3.1.2 Embedding XML Schema

3.1.3 References to Element Declarations and Type Definitions

3.2 Using Other Schema Languages

4 Modularizing WSDL descriptions

4.1 Including Descriptions

4.1.1 location attribute information item with include [owner]

4.2 Importing Descriptions

4.2.1 namespace attribute information item

4.2.2 location attribute information item with import [owner]

5 Documentation

6 Language Extensibility

6.1 Element based Extensibility

6.1.1 Mandatory extensions

6.1.2 required attribute information item

6.2 Attribute-based Extensibility

6.3 Extensibility Semantics

7 Locating WSDL Documents

7.1 wsdli:wsdlLocation attribute information item

8.1 Document Conformance

8.2 XML Information Set Conformance

8.3 Processor Conformance

9 XML Syntax Summary (Non-Normative)

10.1 Normative References

10.2 Informative References

Appendices

A The application/wsdl+xml Media Type

A.1 Registration

A.2 Security considerations

B Acknowledgements

C URI References for WSDL constructs

C.1 WSDL URIs

C.2 Fragment Identifiers

C.3 Extension Elements

C.4 Example

D Migrating from WSDL 1.1 to WSDL 2.0

D.1 Operation Overloading

D.2 PortTypes

E Examples of Specifications of Extension Elements for Alternative Schema Language Support.

E.1.1 namespace attribute information item

E.1.2 location attribute information item

E.1.3 References to Element Definitions

E.2 RELAX NG

E.2.1 Importing RELAX NG

E.2.2 Embedding RELAX NG

E.2.3 References to Element Declarations

F Part 1 Change Log

F.1 WSDL Specification Changes

1.1 Web Service

Web Service

WSDL describes a Web service in two fundamental stages: one abstract and one concrete. Within each stage, the description uses a number of constructs to promote reusability of the description and separate independent design concerns.

At an abstract level, WSDL describes a Web service in terms of the messages it sends and receives; messages are described independent of a specific wire format using a type system, typically XML Schema.

An operation associates a message exchange pattern with one or more messages. A message exchange pattern identifies the sequence and cardinality of messages sent and/or received as well as who they are logically sent to and/or received from. An interface groups together operations without any commitment to transport or wire format.

At a concrete level, a binding specifies transport and wire format details for one or more interfaces. An endpoint associates a network address with a binding. And finally, a service groups together endpoints that implement a common interface.

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