支持跨企业协作的应用集成模型研究

A study on an application integrated model supporting inter-enterprise collaborations

在实现跨企业数据交换和业务流程管理的基础上,研究设计一种跨企业的应用集成模型.该模型基于XML、Web Services与工作流技术,采用三层体系结构;每个企业的公共应用都被封装成Web Services;企业间的数据交换及Web Services间的交互通过SQAP消息机制实现;采用商业流程执行语言(BPEL4WS)对跨企业Web服务进行有效的组织和集成,并在此基础上进行适当扩展,通过引入“服务容器”的概念,用于表示一组具有相同端口类型与操作的服务,以支持服务的选择和替换机制.最后对引擎调度策略问题进行了讨论.

With the knowledge of information exchange and business process management, we study an inter- enterprise application integration model with the features listed as follows： based on the technologies of XML, Web services, and Workflow, it leverages a 3 - tier architecture; all the public applications in every enterprise are encapsulated as Web Services; data exchanges between enterprises and interactions amongst those Web services are realized by the SOAP protocol; the BPEL4WS （Business Process Execution Language for Web Services） is adopted to efficiently organize and integrate the inter- enterprise Web Services; further, the semantic feature of BPEL4WS is extended, and a concept called ServiceContainer is presented to describe a number of services with the same type of ports and operations such that the model also supports service selection and substitution. Finally, we discuss the scheduling algorithm for the engine.