The connector modules are Java classes that extend the methods in the vision connector framework. They support the vision connector framework by providing specific functionality, such as logging in to the SAP application, processing events and business objects, and terminating the connection to the SAP application. The connector modules carry out requests between the vision connector framework and the SAP application. By default, the vision connector framework uses the connectors\SAP directory as the root directory for the connector modules.
Connector modules may not use all of the framework methods. For example, one module might use the init() and terminate() methods while another module uses only the pollForEvents() method. However, every method in the visionConnector and visionBOHandler classes must be implemented for each connector module. Methods that a connector does not use must be implemented as dummy methods, that is, they do nothing but exit.