Common Modeling Techniques
- Modeling a Family of Signals
- Modeling Exception
Modeling a Family of Signals
To model a family of signals:
- Take into account all the different kinds of signals, to which a given set of active objects may respond
- Identify the common types of signals and put them in a generalization/specialization hierarchy using inheritance
- Put the general ones on the top of the hierarchy and the specialized ones at the bottom
Modeling Exception
To model exceptions:
- Identify the exceptional conditions that may be raised for each operation in each class and interface, and model them as signals
- Place these exceptions in a hierarchy
- Raise the general ones and lower the specialized ones. Also, introduce intermediate exceptions, wherever necessary
- Model these signals as send dependencies from the operation to its exceptions
