Object Oriented Impostor - Adapter Pattern
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The document discusses the adapter pattern in Ruby, which allows objects to bridge interfaces by modifying classes and objects at runtime. It provides examples of using an adapter to encrypt data and modify text objects to different formats. The key points covered are when to use an adapter versus modifying a class directly, with adapters preserving encapsulation but adding complexity, while modifying classes may simplify code at the cost of changing internal workings.
Object Oriented Impostor - Adapter Pattern
- 1. Object Oriented Imposters The Adapter Pattern
- 2. Adapters in Ruby An adapter is an object that bridges the interface you have and the interface you need Ruby lets us modify objects and classes on the fly at runtime.
- 4. Implement the Encrypter Class
- 8. TextObject
- 11. Modify a Class on the Fly
- 12. Modify a Single Instance
- 13. Modify a Single Instance
- 14. When to Adapt or Modify When modifications are simple and clear You understand the class you’re modifying and the way in which it is used. The interface mismatch is really complex. You have no idea how the class works.
- 15. When to Adapt or Modify “Adapters preserve encapsulation at the cost of some complexity. Modifying a class may buy you some simplification, but at the cost tinkering with the plumbing”
- 16. Wrap Up Adapters are part of the “Object Oriented Impostor” patterns. Not just about code, intent is critical.