Using Event Links to Model Object State Transitions and Role Evaluations

• Autores: Stephen S.Y. Liao, John F. Schleich
• Localización: International journal of the computer, the internet and management, ISSN 0858-7027, Vol. 3, Nº. 1 (ENE-ABR), 1995, págs. 33-39
• Idioma: inglés
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• Resumen

  • The purpose of this paper is to introduce a new object-oriented technique with event links as its core to model object state transitions and role evolutions of application systems. The object state transitions determine the behavior of object systems (how objects react upon internal and externa triggering events). In addition, since an object may play several roles at different stages and may also be viewed differently even within a stage, the role evolution modeling provides a description of all facets of objects. The key element of the technique is a temporal formula displaying all possible links between two events. These links may be used to represent both internal state transitions within an object and interactions between objects. The technique emphasizes also the description of roles and dynamic constraints on role evolution. It provides a powerful tool to study what are necessary conditions for objects to move model from a role to another and the consequences after moves have taken place.