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In this paper, the authors introduce SMILE (Simple Middleware Independent LayEr), a framework whose main purpose is to facilitate the development of distributed applications. In the SMILE abstraction an application is composed by a set of processes that exchange information. The interfaces of these processes are described using WSDL or by an equivalent UML definition. Using the open source AndroMDA tool and starting from the UML interface specification they are able to generate the skeleton of SMILE applications and most part of their business logic. An application developed using SMILE can run on different middleware platforms just changing its binding, i.e. the code that adapts SMILE to a given middleware.
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