Design Patterns Explained

58 Part II • The Limitations of Traditional Object-Oriented Design
Completing the
solution
Figure 4-1 The design for slots.
I complete this solution by extending it for each of the feature
types, as shown in Figure 4-2.
Figure 4-2 Original solution to the problem of extracting information.
Of course, Figure 4-2 is pretty high-level. Each of the vixxx classes
would communicate with the corresponding V1 library. Each of the
V2xxx classes would communicate with the corresponding object in
the V2 model.
This is easier to visualize by looking at each class individually.