Consuming Services 

Purpose

You call a Web Service in the SAP NetWeaver Developer Studio or in the ABAP Workbench. With only a few mouse-clicks, you create a proxy on the basis of a WSDL document. The Web service is called from the application with the help of the generated proxy. Based on the transmitted input parameters, the called Web service calculates its output, which is then returned to the caller.

Process Flow

Whenever services are used, the proxy logic is called in order to create a request message and send it to the service provider. With synchronous processing, the service user can receive the answer message immediately from the service provider.

You use this process to call a service through the standard protocols.

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       1.      System invokes proxy

You call a proxy to transfer the parameters of the calling application to the local service.

       2.      System executes service

References to the application parameters are used to create a request message. Additional service features, such as security features, are implemented in the message header.

       3.      Sending the request message

The request message is sent to the service provider through a standard protocol.

       4.      Processing the request message at the provider and creating the response message

(See Service Providing)

       5.      Receiving the response message

A response message is received and processed by the calling application.

Result

When the application is executed, the built-in Web service is called and processed.