1. Design Pattern - Builder
Bryan Lin
2013/11/15

2. Agenda
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Definition
UML diagram
Participants
Sample code in C#

3. Definition
• Separate the construction of a complex object from its
representation so that the same construction process can
create different representations

4. UML diagram

5. Participants
• Builder (VehicleBuilder)
o specifies an abstract interface for creating parts of a Product object
• ConcreteBuilder (MotorCycleBuilder, CarBuilder, ScooterBuilder)
o constructs and assembles parts of the product by implementing the Builder interface
o defines and keeps track of the representation it creates
o provides an interface for retrieving the product
• Director (Shop)
o constructs an object using the Builder interface
• Product (Vehicle)
o represents the complex object under construction. ConcreteBuilder builds the product's
internal representation and defines the process by which it's assembled
o includes classes that define the constituent parts, including interfaces for assembling the
parts into the final result

6. Sample code in C#

7. Sample code in C#

8. Sample code in C#

9. Sample code in C#

10. Sample code in C#

11. FAQ

12. References
http://www.dofactory.com/Patterns/PatternBuild
er.aspx