From Inter-organizational Workflows to Process Execution: Generating BPEL from WS-CDL

Abstract

The Web Service Choreography Description Language (WS-CDL) is a specification for describing multi party collaboration based on Web Services from a global point of view. WS-CDL is designed to be used in conjunction with the Web Services Business Process Execution Language (WS-BPEL or BPEL). Up to now, work on conceptual mappings between both languages is missing. This paper closes this gap by showing how BPEL process definitions of parties involved in a choreography can be derived from the global WS-CDL model. We have implemented a prototype of the mappings as a proof of concept. The automatic transformation leverages the quality of software components interacting in the choreography as advocated in the Model Driven Architecture concept.