Design Patterns Java™ Workbook

Modeling Strategies

Consider the Oozinoz advertising policy that suggests a firework to purchase when the customer is visiting the Oozinoz Web site or calling into the call center. Oozinoz uses two commercial off-the-shelf recommendation engines to help choose the right firework to offer a customer. The Customer class chooses and applies one of these engines to decide on which firework to recommend to a customer.

One of the recommendation engines, the Rel8 engine, suggests a purchase based on the customer's similarity to other customers. For this recommendation to work, the customer must have registered and given information about likes and dislikes about fireworks and other entertainments.

If the customer has not registered, Oozinoz uses LikeMyStuff ...