Friday, May 29, 2009

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

This graphic is explained in the accompanying text

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.

1 comment:

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