The Class Responsibility Assignment Case

This paper describes a case study for the ninth Transformation Tool Contest (TTC’16)1. The case is aimed at the production of high-quality designs for object-oriented systems and presents the problem of finding a good class diagram for a given set of methods and attributes with functional and data relationships among them. In order to obtain such a class diagram, dedicated quality metrics that have been defined in the context of the class responsibility assignment problem need to be optimized. Therefore, the focus of this case study is not on the definition of the necessary set of rules, but rather on the orchestration of such rules in order to find the optimal class diagrams. The evaluation of the produced transformation is driven by the quality of the produced models, the complexity of the rule orchestration as well as by the flexibility of the solution and its performance.