数据字典在转换工具中的应用设计

Design and implementation of transition tool based on data dictionary

因各系统记录的二进制数据的数据格式不同,为开发系统耦合度低、可重用性好的转换工具,结合树型结构数据字典和模块化设计思想,利用XML文档存储和维护数据字典内容,设计了基于XML存储的数据字典的转换工具系统框架。将转换工具划分为预处理模块、提取载荷模块、读取XML文件模块、数据字典模块和解析结果显示模块共5个功能模块,完成了二进制数据的译码过程。使用XML数据字典设计转换工具系统框架,结构清晰,可维护性好。

The formats of binary digits varies in different binary systems,to design a conversion tool with low coupling and better reusability,according to the designing plan of tree structure and modularization,XML schema is adopted to store and maintain the content of the data dictionary.A framework of the conversion tool is designed with XML storing the data.The conversion tool includes pretreatment,pick up load,read XML file,data dictionary and display parsed result function modules.The decoding of binary digits is completed.Using XML data dictionary to realize the system of the conversion tool,has a clear structure and a good maintainability.