Wal's Fish Tank
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Wal's Fish Tank
This content is duplicated from Wal's Cosc324 lecture material of 2008. It has been reproduced with the permission of Lord Wal (One pattern to rule them all and in the design philosophy bind them!).
Simulated fish tank
- Lots of different kinds of fish
- Only ever one tank
- Multiple views possible
- Schools of fish
- Remoras and barnacles
- Fish spawn new fish
Singleton
Only ever one tank
Observer
Multiple views possible (FishView is a gui view)
Composite
Schools of fish
Decorator
Remoras and barnacles
Factory Method
Fish spawn new fish
The Result
Note that this design does have flaws that are introduced by the use of patterns, see Design patterns break rules.
