Assignment 7 - Design Patterns

1. Pick a design pattern from the Gamma et al. book. A list of the book's patterns is given below. Certain patterns are not eligible for presentation; they are indicated by the use of a strikethrough highlight on their name. Let me know your team members and at least three ranked choices (first-come, first-served).
2. Devise a practical situation (problem context) for which your pattern would be a solution. Make the situation you choose familiar but different from the one in the book.
3. Prepare a short (six page) report that covers the following items.

• Present the problem context by way of your chosen situation
• Present your pattern both structurally (using a class model) and behaviorally (using either a message sequence chart or a collaboration diagram)
• Generalize your example to describe the kind of situations in which your pattern would apply
• Discuss implementation choices/issues that arise with the pattern. Use your example to illustrate the issues
  

4. Turn in (attach to the Swiki) your report.
5. Prepare a seven-minute presentation, covering the above items, to be given in class.
   
6. You should work in teams of four students for this assignment.

Notes

1. Some patterns have evolved since the original publication of the book. Make sure to look into more modern variations and extensions and include them in your report.
2. Patterns not found in the Gang of Four book may be acceptable if you clear them with me first.