一种基于服务过程行为的Web服务发现方法  

A Web Services Discovery Method Based on Web Services Process Behaviors

作　　者：胡建强[1] 周斌[1] 邹鹏[1] 

机构地区：[1]国防科技大学计算机学院,湖南长沙410073

出　　处：《计算机工程与科学》2007年第9期41-44,共4页Computer Engineering & Science

基　　金：国家863计划资助项目(2003AA115410;2004AA112020;2003AA115210);国家自然科学基金资助项目(90104020)

摘　　要：现有的Web服务发现方法主要是基于集中式拓扑,并且使用的服务描述仅仅是描述服务接口功能而忽略了过程相关信息。这无法保证服务组合的相容性,也无法满足组合事务无死锁的要求。同时,这些方法都无法避免高维护代价、单点失效和可扩展性差等问题。本文提出一种基于结构化对等网络的Web服务发现方法,引入确定性有限状态机DFSA,将服务过程行为描述用于服务匹配,从而避免了潜在的Web服务组合不相容和有利于服务组合的自动化。The current Web services discovery methods are based on centralized approaches among which Web services are described with service interface functions but not process-related information. It cannot guarantee the compatibility of Web services composition, nor can it make Web services easy to complete a deadlock-free and bounded process transaction. Furthermore, centraiized approaches to service discovery suffer from the problems such as high operational and maintenance cost, single point failure, and scalability. Therefore, we propose a structured peer-to-peer framework for Web services discovery in which Web services are located based on service functionality and process behaviors. It guarantees the semantic compatibility of Web services composition, and achieves the automated composition at the level of executable process.

关 键 词：组合不相容 确定性有限状态机 服务匹配 

分 类 号：TP311[自动化与计算机技术—计算机软件与理论]