【摘要】 传统的面向对象系统应用编程接口与实现分离不彻底,接口类的部分实现细节仍然与用户程序过紧地耦合在一起,使系统的维护和升级变得困难。论文提出一种新的接口设计模式,将系统划分为接口部分、实现部分和访问控制部分,隐藏了接口类的细节,从而降低了系统与用户程序的耦合度。该模式已被应用于商业CAD系统中。更多还原

【Abstract】 API and implementation is not separated entirely in conventional Object-Oriented system.The degree of coupling between API and user program is high,so the maintenance and upgrade of the system will become difficult.A new design pattern for this problem is proposed in this paper.The system is divided into three parts:interface,implementation and access control.The details of implementation are hided entirely.The degree of coupling decreases. This pattern is used in a commercial CAD system.更多还原