Web Service Technologies in the Application Server 

The following section provides a short definition of the central Web Service technologies SOAP and WSDL. Using these technologies, the Application Server can:

Provide existing functions (BAPIs, RFMs, IDocs, EJBs) as Web services

·         Process Web services from any Web service provider.

SOAP

SOAP (Simple Object Access Protocol) is an XML-based protocol for information exchange in a decentralized, distributed environment. The following elements are defined by a SOAP specification:

·         A processing model for messages

·         An envelope for the exchange of XML documents

·         Error handling

·         The use of a transport protocol (for example, HTTP)

·         An encryption schema for data types

 

WSDL

WSDL (Web Services Description Language) is an XML format for the description of Web services. The following elements are defined by WSDL:

·         The Web service interface (IDL)

·         One or more transport protocols that are used as access to the Web service (for example, SOAP)

·         The Service Endpoints (URL)

 

Web Service Processing in the Application Server

Explanatory note:

·         UDDI (Universal Description, Discovery and Integration) is a protocol that simplifies the finding of particular services and the corresponding companies over the Internet.

Examples

SOAP Message

WSDL File

More Information

For more information on these technologies, see:

SOAP

·         WSDL: at www.w3.org/TR/wsdl

For information about creating and using Web services, see the following links:

●      Java Web Services

●      ABAP Web Services