When we try to analyse ways of mapping BPMN to BPEL, we need to conceptually address and understand the following two areas:
What is prescribed by the BPMN Specification for BPEL mapping?
How does the tool vendor implement the specification for BPMN to BPEL mapping?
The way BPMN goes about mapping BPEL is via the transformation of object types and the use of properties or attributes for the BPD and its objects to similar BPEL counterparts. Every object in a BPD, such as a process, event, or gateway has attributes that the user can specify, and can use during transformation to BPEL. For example, the Start Event of a type message will become a receive element in BPEL with the createInstance property set to yes. The end event of the type message will be translated into Reply or Invoke. Similarly, there are other mappings for processes, flows, and gateways, which have been explained as a section in BPMN specifications, to which...