| 其他摘要 | Enterprise applications often have large scale and complex structure. At present, Enterprise applications are typically built on Multi-tiered object-oriented platforms, such as Java and .NET. These platforms are based on distributed network environment. Although they are able promote enterprise application, they have the complicated characteristic of distribution, asynchrony, and concurrence. To build a well-designed, with good performance, availability, extensible enterprise application is difficult Design pattern is one of the most important advancement in software engineer. By using design patterns, the successful experience can be reused. The development efficiency and the design of System can be improved remarkably, therefore design pattern can enhance numerous aspects of the system , including data integrity, manageability, and scalability. Pattern-Oriented Analysis and Design (POAD) approach builds on the idea of composite design pattern. By build reusable software framework, it provides a design pattern based solution to software design. Aiming the problems of enterprise development, this paper describes how to use POAD process promoting the design of enterprise application. The main contribution is that it introduces POAD process to enterprise domain. It provides a new design approach to enterprise development. For the prevalent N-tier architecture, it presents presentation layer framework, business layer framework, persistence layer framework, web service integration layer framework respectively, These enterprise application frameworks give an overall solution to the design of enterprise software. This paper analyses the demand of every enterprise layer, describes the design processes of pattern frameworks, and concludes the characteristic of the frameworks. With that, this paper discusses the application of the pattern-based framework in ChinaVNet, a large enterprise software. Lastly, it gives a complete sum-up for the work of this paper, and brings forth the future of POAD process and enterprise application framework, and discusses further work. |
修改评论