Chapter 11. The Abstract Factory Pattern
The Abstract Factory pattern is one level of abstraction higher than the factory pattern. You can use this pattern when you want to return one of several related classes of objects, each of which can return several different objects on request. In other words, the Abstract Factory is a factory object that returns one of several groups of classes. You might even decide which class to return from that group using a Simple Factory.
Common thought experiment-style examples might include automobile factories. You would expect a Toyota factory to work exclusively with Toyota parts and a Ford factory to use Ford parts. You can consider each auto factory as an Abstract Factory and the parts the groups of related ...
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