Role Class Model

In computer science, the role class model is a role <a href="/facts/Software_analysis_pattern/qUMRw5jF">analysis pattern</a> described (but not invented ) by Francis G. Mossé in his article on Modelling Roles. The role class pattern provides the ability for a class to play multiple roles and to embed the role characteristic in a dedicated class.
In our society, as we built it, roles are everywhere. Anyone trying to work in a team to create something has a role. In <a href="/facts/Cinematography/Umcgh4GC">cinematography</a>, many different persons take part in the creation of a film: the <a href="/facts/Film_director/IlmswLJh">film director</a>, the <a href="/facts/Film_Producer/NGEVAfp1">producer</a>, <a href="/facts/Actors/JlSNxot8">actors</a>, <a href="/facts/Play_writer/Mdtsordb">play writer</a>(s), etc.
Even our State organisations are based on various roles. In a <a href="/facts/Republic/vc8D2pA8">Republic</a>, you have a <a href="/facts/President_(government_title)/2GoI0KIe">President</a>, Ministers, Deputies, etc.
Dealing with these situations is one of the problems encountered most during object-oriented analysis. Francis G. Mossé has identified 5 role analysis patterns that can be used to solve most role related problems: Role Inheritance, Association Roles, Role Classes, Generalised Role Classes and Association Class Roles. They all have various degrees of constraints, flexibility or power, which together offer a complete solution to most role-related problems.

Role Class Model open-in-new

Role Class Model