WSIF is a WSDL-oriented Java API. You use this API to invoke Web services dynamically, regardless of the service implementation format (for example, enterprise bean) or the service access mechanism (for example, Java Message Service (JMS)). The WSIF framework includes an EJB provider for EJB invocation using Remote Method Invocation over Internet Inter-ORB Protocol (RMI-IIOP). However, for EJB(IIOP)-based Web service invocation you should instead invoke RMI-IIOP Web services using JAX-RPC.
Using WSIF, you can move away from the usual Web services programming model of working directly with the SOAP APIs, towards a model where you interact with representations of the services. You can therefore work with the same programming model regardless of how the service is implemented and accessed.
To use WSIF, see the following topics: