13.1. Dynamically Simple Associations

Links between objects are created and deleted over time. There are several approaches to modeling associations. We can

  • Create the objects and the link synchronously, and not build any statechart diagrams for the classes or the links.

  • Build a statechart diagram for one class or the other, endowing that class with the responsibility of managing creation and deletion of the objects and the link.

  • Build a statechart diagram for both classes, assigning the responsibilities for creating and deleting the link between the classes.

  • Abstract the association as an association class and use the association class to house the statechart diagram.

13.1.1. Associations without Explicit Lifecycles

Some associations simply exist. ...

Get Executable UML: A Foundation for Model-Driven Architecture now with O’Reilly online learning.

O’Reilly members experience live online training, plus books, videos, and digital content from 200+ publishers.