1. A method for making a service implementation accessible for a client application in a service oriented architecture, the method comprising: utilizing a computer to perform: extracting and storing an interface definition language (IDL) file from the service implementation, wherein the service implementation is a pre-existing server program in the service oriented architecture, wherein the IDL file defines interface information to be provided by the client application to access the service implementation during runtime; and extracting and storing a server-side mapping file from the service implementation, wherein the server-side mapping file defines how the interface information provided by the client application is mapped when accessing the service implementation during runtime; wherein the IDL file and the server-side mapping file are used to perform client communication with the service implementation without requiring changes to the pre-existing server program; and wherein said extracting the IDL file and/or extracting the server-side mapping file from the service implementation comprises using an extractor wizard for extracting necessary information for generating the interface definition language file and/or the server-side mapping file, wherein said using the extractor wizard comprises presenting a mapping editor to a user.