一种用户为中心、基于多视图合成的服务组合方法

A User-Centric Service Composition Method Synthesizing Multiple Views

用户为中心的服务组合旨在直接地反映用户需求、提高建模灵活性和降低应用构建成本.然而,当前的用户编程方法仍然存在挑战:一方面传统方法以服务为基本元素,忽视了应用背后的业务数据,用户难以从熟知的业务数据角度表达建模需求;另一方面传统方法以控制流为中心,需要精确描述组合细节,非专业的用户不易理解和操作且难以表达业务约束.文中提出一种用户为中心、基于多视图合成的服务组合方法,通过体征数据模型显式建模业务数据,将服务组合的需求转化为在多个视图编程操作;并给出一种候选流程的构造算法,参照用户的视图操作合成服务组合流程.案例和实验分析表明,文中方法可降低用户构造服务组合的复杂性并提高建模的效率.

User-centric service composition aims at reflecting the users＇ demand directly, improving the accuracy of modeling and reducing the cost. However, there are still challenges to current methods. On the one hand, traditional methods taking service as the basic element, neglect the business data behind the application and it＇s difficult for users to express requirements by the comprehensible business data. On the other hand, traditional methods based on control flow, require describing the composition details accurately and it is not easy for users to express business constraints in a comprehensive way. This paper presents a user-eentric service composition meth- od synthesizing multiple views. The requirements about application modeling are transferred to operations on multiple views through business data. Meanwhile a service composition construction algorithm is proposed for immediate decision-making. Experiments and case study illustrate the effect of reducing the programming complexity without the loss of the efficiency.