一种支持流程自适应的替换方法

Web服务组合通过服务之间的协同来实现业务流程的运转,但Internet环境的动态性,服务难免变得不可用.为了保证流程在不中断的前提下继续运行,需要寻找新的服务或路径来替换失效服务.本文将替换过程分为服务替换和路径替换2种方式,并详细介绍了这2种替换方式的实现方法.服务替换响应时间快;路径替换只要组合服务中存在可行解就能找到替换路径,提高了自适应处理的成功率.

A replacement approach for supporting self-adaptable business process

The method of Web service composition keeps business process running by collaboration of Web services.By virtue of dynamic environment of Internet,the Web services may become unavailable.In order to make sure the running process is not interrupted,a new Web service or path is needed to replace the failed service.In this paper,the approaches of service replacement and path replacement are proposed in the process of replacement.And the methods to implement them are described in detail.The service replacement has efficient response time and the path replacement can find a replacement path,as long as it exists a potential path in the composite Web services.So it improves the ratio of success about supporting self-adaptable business process.