design-patterns - builder 设计模式和工厂设计模式有什么区别？

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Builder设计模式和Factory设计模式有什么区别？

哪一个更有优势，为什么？

如果我想测试和比较/对比这些模式，如何将我的发现表示为图表？

Answer 1

对于设计模式，通常没有适用于所有情况的“更有利”的解决方案。这取决于您需要实现什么。

来自维基百科:

• Builder focuses on constructing a complex object step by step. Abstract Factory emphasizes a family of product objects (either simple or complex). Builder returns the product as a final step, but as far as the Abstract Factory is concerned, the product gets returned immediately.
• Builder often builds a Composite.
• Often, designs start out using Factory Method (less complicated, more customizable, subclasses proliferate) and evolve toward Abstract Factory, Prototype, or Builder (more flexible, more complex) as the designer discovers where more flexibility is needed.
• Sometimes creational patterns are complementary: Builder can use one of the other patterns to implement which components get built. Abstract Factory, Builder, and Prototype can use Singleton in their implementations.

工厂设计模式的维基百科条目: http://en.wikipedia.org/wiki/Factory_method_pattern

构建器设计模式的维基百科条目: http://en.wikipedia.org/wiki/Builder_pattern