Application Research Of Software Reuse Technology In City Public Transportation Card System

As a system engineering of providing convenience for urban residents, city public transportation card system has been widely used in more and more cities. With the requirement increasing continually, the software scale and complexity of the system have been continually extended. A new technology of software development must be explored to suit the requirement of software development in order to enhance the development efficiency and development speed of city public transportation card system. Software reuse technology is an effective method to solve this challenge, and software components play an important role in the software reuse.The primary research work made by author of this paper is summarized as the followings:1) In order to enhance the development efficiency of city public transportation card system, from the perspective of component and framework, the relevant design and development technologies based on component and framework are studied.2) The key technologies which are used in the development of city public transportation card system are deeply discussed, including software reuse technology, software component technology, component assembly technology, design patterns and framework technology, that lay the theoretical and technical basis for the design and development of this system.3) Aiming at the application features of city public transportation card system, the design goals and general structure of the system are analyzed, and a detailed design for logical model, logical architecture and application architecture of card clearing center system and some common functional modules is done.4) The framework model of city public transportation card system which including general component layer, basic function component layer and business logical component layer is designed, the components in the system framework are assembled, and with communication transmission subsystem and safe authentication subsystem for example, the extraction, design and programming of components are done.The software reuse technology based on component which is studied in this paper can greatly enhance the development efficiency, reliability and scalability of city pubic transportation card system.