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Design Pattern From Java To Ruby
The document discusses design patterns in Ruby compared to Java. Some key points: - Ruby classes are objects while Java uses classes and objects. Ruby uses message passing while Java uses method calls. - Ruby has built-in support for common patterns like Singleton, Observer, Iterator through mixins. These are implemented differently in Java. - Other patterns like Factory Method, Command are easily implemented in Ruby thanks to features like mixins and blocks/procs. - The document provides an overview of several design patterns and how they translate from Java to Ruby.
Design Pattern From Java To Ruby
- 1. Design Pattern -- from Java to Ruby Richard E kohe www.ekohe.com Web Development & Graphic Design China Ruby on Rails Development - Rails Consulting - Rails Services - Merb - Offshore Web Development
- 2. Why use DesignPattern For reuse www.ekohe.com Web Development & Graphic Design China Ruby on Rails Development - Rails Consulting - Rails Services - Merb - Offshore Web Development
- 3. Why use DesignPattern For communication www.ekohe.com Web Development & Graphic Design China Ruby on Rails Development - Rails Consulting - Rails Services - Merb - Offshore Web Development Define a Node interface, all of leaf nodes and internal nodes should implements the interface, internal nodes has a list that includes other internal nodes and leaf nodes and it can add sub-nodes. But leaf node can’t have add sub-node method. Multi-level Menus?
- 4. Why use DesignPattern For communication www.ekohe.com Web Development & Graphic Design China Ruby on Rails Development - Rails Consulting - Rails Services - Merb - Offshore Web Development Composite Pattern Multi-level Menus?
- 5. Difference from javato ruby Classes are Objects Messages, not function call Duck Typing Mixin www.ekohe.com Web Development & Graphic Design China Ruby on Rails Development - Rails Consulting - Rails Services - Merb - Offshore Web Development
- 6. Singleton Pattern ensuresa class has only one instance, and provides a global point of access to it www.ekohe.com Web Development & Graphic Design China Ruby on Rails Development - Rails Consulting - Rails Services - Merb - Offshore Web Development
- 7. Singleton Pattern www.ekohe.comWeb Development & Graphic Design China Ruby on Rails Development - Rails Consulting - Rails Services - Merb - Offshore Web Development You are my only wife You are my only husband
- 8. Singleton Pattern -- java Eager loading Lazy loading www.ekohe.com Web Development & Graphic Design China Ruby on Rails Development - Rails Consulting - Rails Services - Merb - Offshore Web Development
- 9. Singleton Pattern -- ruby Ruby built-in singleton www.ekohe.com Web Development & Graphic Design China Ruby on Rails Development - Rails Consulting - Rails Services - Merb - Offshore Web Development
- 10. www.ekohe.com Web Development& Graphic Design China Ruby on Rails Development - Rails Consulting - Rails Services - Merb - Offshore Web Development
- 11. Built-in (Singleton) www.ekohe.comWeb Development & Graphic Design China Ruby on Rails Development - Rails Consulting - Rails Services - Merb - Offshore Web Development Ruby for Design Pattern
- 12. Observer Pattern definesa one-to-many dependency between objects so that when one object changes state, all of its dependents are notified and updated automatically www.ekohe.com Web Development & Graphic Design China Ruby on Rails Development - Rails Consulting - Rails Services - Merb - Offshore Web Development
- 13. Observer Pattern www.ekohe.comWeb Development & Graphic Design China Ruby on Rails Development - Rails Consulting - Rails Services - Merb - Offshore Web Development Temperature Detector Subscribe Notify Notify Temprature changed
- 14. Observer Pattern -- java www.ekohe.com Web Development & Graphic Design China Ruby on Rails Development - Rails Consulting - Rails Services - Merb - Offshore Web Development
- 15. Observer Pattern -- java www.ekohe.com Web Development & Graphic Design China Ruby on Rails Development - Rails Consulting - Rails Services - Merb - Offshore Web Development
- 16. Observer Pattern -- java Java built-in observer www.ekohe.com Web Development & Graphic Design China Ruby on Rails Development - Rails Consulting - Rails Services - Merb - Offshore Web Development
- 17. Observer Pattern -- ruby Ruby built-in observer www.ekohe.com Web Development & Graphic Design China Ruby on Rails Development - Rails Consulting - Rails Services - Merb - Offshore Web Development
- 18. www.ekohe.com Web Development& Graphic Design China Ruby on Rails Development - Rails Consulting - Rails Services - Merb - Offshore Web Development
- 19. Built-in (Singleton, Observer ) Mixin www.ekohe.com Web Development & Graphic Design China Ruby on Rails Development - Rails Consulting - Rails Services - Merb - Offshore Web Development Ruby for Design Pattern
- 20. Iterator Pattern providesa way to access the elements of an aggregate object sequentially without exposing its underlying representation www.ekohe.com Web Development & Graphic Design China Ruby on Rails Development - Rails Consulting - Rails Services - Merb - Offshore Web Development
- 21. Iterator Pattern www.ekohe.comWeb Development & Graphic Design China Ruby on Rails Development - Rails Consulting - Rails Services - Merb - Offshore Web Development Count 1 2 3 10
- 22. Iterator Pattern --java www.ekohe.com Web Development & Graphic Design China Ruby on Rails Development - Rails Consulting - Merb - Offshore Web Development External Iterator
- 23. Iterator Pattern --java www.ekohe.com Web Development & Graphic Design China Ruby on Rails Development - Rails Consulting - Merb - Offshore Web Development Internal Iterator
- 24. Iterator Pattern -- ruby Internal Iterator .each www.ekohe.com Web Development & Graphic Design China Ruby on Rails Development - Rails Consulting - Rails Services - Merb - Offshore Web Development
- 25. Built-in (Singleton, Observer, Iterator ) Mixin www.ekohe.com Web Development & Graphic Design China Ruby on Rails Development - Rails Consulting - Rails Services - Merb - Offshore Web Development Ruby for Design Pattern
- 26. returns an instanceof one of several possible classes, depending on the data provided to it. www.ekohe.com Web Development & Graphic Design China Ruby on Rails Development - Rails Consulting - Rails Services - Merb - Offshore Web Development Simple Factory Pattern
- 27. www.ekohe.com Web Development& Graphic Design China Ruby on Rails Development - Rails Consulting - Rails Services - Merb - Offshore Web Development Simple Factory Pattern
- 28. www.ekohe.com Web Development& Graphic Design China Ruby on Rails Development - Rails Consulting - Rails Services - Merb - Offshore Web Development Simple Factory Pattern -- java
- 29. www.ekohe.com Web Development& Graphic Design China Ruby on Rails Development - Rails Consulting - Rails Services - Merb - Offshore Web Development Simple Factory Pattern -- java
- 30. Classes are Objectswww.ekohe.com Web Development & Graphic Design China Ruby on Rails Development - Rails Consulting - Rails Services - Merb - Offshore Web Development Simple Factory Pattern -- ruby
- 31. Built-in (Singleton, Observer,Iterator) Mixin Classes are Objects www.ekohe.com Web Development & Graphic Design China Ruby on Rails Development - Rails Consulting - Rails Services - Merb - Offshore Web Development Ruby for Design Pattern
- 32. encapsulates a requestas an object, thereby letting you parameterize clients with different requests, queue or log requests, and support undoable operations. www.ekohe.com Web Development & Graphic Design China Ruby on Rails Development - Rails Consulting - Rails Services - Merb - Offshore Web Development Command Pattern
- 33. www.ekohe.com Web Development& Graphic Design China Ruby on Rails Development - Rails Consulting - Rails Services - Merb - Offshore Web Development Command Pattern Increase temperature command Decrease temperature command
- 34. www.ekohe.com Web Development& Graphic Design China Ruby on Rails Development - Rails Consulting - Rails Services - Merb - Offshore Web Development Command Pattern -- java
- 35. Proc www.ekohe.com WebDevelopment & Graphic Design China Ruby on Rails Development - Rails Consulting - Rails Services - Merb - Offshore Web Development Command Pattern -- ruby
- 36. Built-in (Singleton, Observer,Iterator) Mixin Classes are Objects Proc www.ekohe.com Web Development & Graphic Design China Ruby on Rails Development - Rails Consulting - Rails Services - Merb - Offshore Web Development Ruby for Design Pattern
- 37. Make use ofruby advantage www.ekohe.com Web Development & Graphic Design China Ruby on Rails Development - Rails Consulting - Rails Services - Merb - Offshore Web Development Other Design Patterns
- 38. Principle DRY –Don't Repeat Yourself Convention Over Configuration www.ekohe.com Web Development & Graphic Design China Ruby on Rails Development - Rails Consulting - Rails Services - Merb - Offshore Web Development
- 39. Resources Design Pattern– Elements of Reusable Object-Oriented Software Erich Gamma, Richard Helm, Ralph Johnson, John Vlissides Head First Design Pattern Kathy Sierra, Bert Bates Design Pattern in Ruby Russ Olsen www.ekohe.com Web Development & Graphic Design China Ruby on Rails Development - Rails Consulting - Rails Services - Merb - Offshore Web Development
- 40. Q&A happy todiscuss and fix my mistakes www.ekohe.com Web Development & Graphic Design China Ruby on Rails Development - Rails Consulting - Rails Services - Merb - Offshore Web Development