Specification of Mixed Systems in KORRIGAN with the Support of a UML-Inspired Graphical Notation

Our Korrigan formalism is devoted to the structured formal specification of mixed systems through a model based on a hierarchy of views [4, 20]. In our unifying approach, views are used to describe the different aspects of a component (both internal and external structuring). We propose a semi-formal method with guidelines for the development of mixed systems, that helps the specifier providing means to structure the system in terms of communicating subcomponents and to describe the sequential components. While there is growing interest for having both textual and graphical notations for a given formalism, we introduce composition diagrams, a UML-inspired graphical notation for Korrigan, associated with the various steps of our method. We shall show how our method is applied to develop a Korrigan specification (both in textual and graphical notation) and illustrate this approach on a case study.