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Web Service Composition Modeling Architecture based on workflow net

Web Service provides a comprehensive, flexible way of shared business function, while WS-BPEL (Web Service-Business Process Execution Language) is a tangible standard of Web Service orchestration and integration. However, at the process of Web Service orchestration in BPEL editor, as there is no constraints and limitations in the rules of syntax and semantic, the orchestration business process exists faults or can not be executed. Based on this problem, we introduce into Workflow-net, it provides an effective set of grammar rules for Web Service composition, and meanwhile, proposing six-layer Web Service Composition Modeling Architecture, the workflow net components will replace BPEL logical elements, and list the mapping between Workflow-net components and BPE1 language.