RIA: An Object-Oriented Extensible View System for Computer-Aided Design Applications

RIA：一个面向对象的计算机可扩展视图系统 辅助设计应用 计算机辅助设计（CAD）系统通常使用对象- 面向对象的数据库（OODB），将各种设计数据集成到 所有设计工具都可以访问一个存储库。 这种中央 数据库是一个关键的瓶颈， 随着时间的推移，CAD系统，并迫使所有的设计工具， 相同的（全面的，因此非常复杂的）数据模型。 显然，提供设计工具与 定制设计表达和集成设计数据 变成一个统一的模型。 这项研究工作解决了这一问题 通过扩展OODB技术的两个高级功能来解决这个问题： (1)设计视图和（2）模式更改支持。 支持 定制的设计表达，管理机制 CAD数据库的个性化工具接口正在 实现（这使单个设计工具不必 维护全局数据模型和局部设计之间的映射 观点）。为了支持CAD系统的可扩展性， 系统将增加模式改变功能。是 这两种功能的独特集成， 面向对象的可扩展视图系统（OOEVS）是一个全新的 支持CAD应用程序的工具。广泛的实验将 评估OOEVS及其在建筑中的应用 复杂的软件系统（尤其是CAD系统）。 的 这项研究的意义在于它提供了一种解决方案， 对CAD工具集成的重要问题进行了研究， 具有强大功能的先进数据库。

RIA: An Object-Oriented Extensible View System for Computer- Aided Design Applications Computer-Aided Design (CAD) systems typically use an object- oriented database (OODB) to integrate diverse design data into one repository accessed by all design tools. Such a central database is a critical bottleneck preventing the extensibility of the CAD system over time, and forcing all design tools to work on the same (comprehensive and hence extremely complex) data model. Clearly, there is a conflict between supplying design tools with customized design representations and integrating design data into one uniform model. This research effort addresses this problem by extending OODB technology by two advanced features: (1) design views and (2) schema change support. To support customized design representations, mechanisms to manage individualized tool interfaces of the CAD database are being implemented (which free individual design tools from having to maintain mappings between the global data model and local design views). To support the extensibility of the CAD system, the view system will be augmented with schema change functionality. It is this unique integration of both capabilities that makes the Object-Oriented Extensible View System (OOEVS) a radically new tool for supporting CAD applications. Extensive experiments will be performed to evaluate OOEVS and its application for building complex software systems (in particular, CAD systems). The proposed research is significant in that it provides a solution to the important problem of CAD tool integration and extends state-of-the-art databases with powerful functionalities.