Mapping BPMN to BPEL Example将映射到示例.pdf

Using BPMN to Model a BPEL Process Stephen A. White, IBM Corp., United States ABSTRACT The Business Process Modeling Notation (BPMN) has been developed to enable business user to develop readily understandable graphical representations of business processes. BPMN is also supported with appropriate graphical object properties that will enable the generation of executable BPEL. Thus, BPMN creates a standardized bridge for the gap between the business process design and process implementation. This paper presents a simple, yet instructive example of how a BPMN diagram can be used to generate a BPEL process. INTRODUCTION The Business Process Modeling Notation (BPMN) has been developed to enable business user to develop readily understandable graphical representations of business processes. BPMN is also supported with appropriate graphical object properties that will enable the generation of executable BPEL. This paper presents an example of an order shipping process, yet instructive example of how a BPMN diagram can be used to generate a BPEL process. When mapping a BPMN diagram to BPEL (version 1.1)1, a decision must be made as to the basic structure of the BPEL document. That is, will the BPEL format be based on the BPEL graph structure (the flow element) or the BPEL block structure (the sequence element)? This choice will affect how much of the BPMN Sequence Flow will map to BPEL link elements. Using a block structure as the foundation for mapping, link elements only are used when there is a specific section of the Process where parallel activities occur. Using the graph structure as the foundation for mapping, most Sequence Flow will map to link elements, as the entire BPEL process is