Abstract Factory

UML :

abstract-factory_1.png

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introduction :

/**
 * 
 * The Abstract Factory pattern provides a way to encapsulate a group of individual factories that have a common theme
 * without specifying their concrete classes. In normal usage, the client software creates a concrete implementation of
 * the abstract factory and then uses the generic interface of the factory to create the concrete objects that are part
 * of the theme. The client does not know (or care) which concrete objects it gets from each of these internal
 * factories, since it uses only the generic interfaces of their products. This pattern separates the details of
 * implementation of a set of objects from their general usage and relies on object composition, as object creation is
 * implemented in methods exposed in the factory interface.
 
 * The essence of the Abstract Factory pattern is a factory interface ({@link KingdomFactory}) and its implementations (
 * {@link ElfKingdomFactory}, {@link OrcKingdomFactory}). The example uses both concrete implementations to create a
 * king, a castle and an army.
 * 
 */

• Abstract Factory Pattern
  • 创造型设计模式
  • 我的理解为顾名思义,定义一个工厂固有的产生实体的抽象细节(方法或属性?),而不关心具体的实现工厂是如何做的,而最后生成具体的实现类的时候,使用的方法即为最上层的接口定义的.