TRANSFORMING BPEL SERVICE COMPOSITION INTO A SERVICE COMPOSITION DIRECTED GRAPH FOR BETTER COMPOSITION PLAN MANAGEMENT

摘要

The advantages of web service composition lead to the development of various notations and languages for modeling service composition processes and introduce them to process engines for execution. One of the most popular languages for service compositions is Business Process Execution Language (BPEL). BPEL process editing software is widely available and able to perform basic things such as manual visual process edition. But for the purpose of automatic or semi-automatic BPEL process edition there is a need to develop some kind of an easy machine-processable form of BPEL composition plans. This paper presents a Service Composition Directed Graph – a graph-based data structure dedicated to the representation of service compositions. Also, this paper proposes an algorithm that transforms BPEL compositions into Service Composition Directed Graphs.