Automated derivation of executable business processes from choreographies in virtual organisations

In this paper, we address the challenge of deriving both executable WSBPEL processes and their respective WSDL interface specifications from choreographies written in WS-CDL for business processes in Virtual Organisations (VOs). The major issues hereby, are the differences in the vocabulary of WS-CDL and WSBPEL as well as the information gap between a choreography and an executable orchestration. The information gap results from the requirement imposed by the VO environment to establish a process-based collaboration in a top-down fashion. High-level choreography descriptions are hereby the basis for the derivation of detailed executable processes. The first issue is addressed with a detailed translation table; the second one requires the use of a role specific knowledge base. This knowledge base delivers process subsets modelling detailed role of internal activities while avoiding their exposure to collaborating roles. The combined solution is a CDL2BPEL algorithm.