数控领域内基于XML的可扩展的组件描述

Extendable Description of Components Based on XML used in Numerical Control Domain

软件组件的形式化描述是基于组件开发复杂软件的基础之一。通过把组件的标识信息、外部信息、内部信息、术语信息、技术信息、非功能性属性信息和商业信息等组织成树型结构的形式,利用XML模式定义树型结构的语义规则,设计了数控领域内的组件描述方法。这种方法的一个重要特征是它是可扩展的。利用这种描述方法,在现有组件的基础上,实现了开发式数控系统,系统具有良好的扩展性和灵活性,这种描述方法具有很好的实用价值。

Component based software development is based on formally component description.This paper presents an extendable description of components method based on XML which is used in numerical control domain.This method groups identifier information,outer information,inner information,glossary information,technology information,no-function information and business information into an extendable tree structure.Using XML schema technology,this method defines the semantic rule of this tree structure.Based on existing components,we develope an extendable and flexible system by this method.It proves that our method is valuable and practical.