Object orientation in MSC-2000

• MSC documents define instance kinds

  • instance kinds are types suited for object orientation

• Inheritance

  • inheritance of instance kinds means inheriting all contained instances and MSCs

• Virtuality

  • Virtual MSCs means that MSCs may be redefined in specialized instance kinds

• Close correspondance with object orientation in SDL and other object-oriented languages such as Java

Previous slide

Next slide

Back to first slide

View graphic version

Sequence Charts have been used for years in connection with object-oriented analysis, but the notation itself has not offered any object-oriented facilities. This is remedied by MSC-2000

MSC document as the definiton of instance kinds is a Columbi egg in connection with object orientation. The MSCs easily plays the role of “methods” as they are called in Java terms (or virtual functions in C++ terms)