A timed semantics for web services composition

Abstract

This paper introduces a method to analyse and verify the BPEL language. We propose a transformation approach based on the translation of BPEL descriptions to the communicating durational action timed automata (C-DATA) model which is a distributed, real-time semantic model that is based on true-concurrency semantics and supports the distributed and the communicating aspects. In order to handle compositions of multiple web services and exchanged messages between them we represent each BPEL service by a local C-DATA, while the global system is represented by all these local C-DATAs. These local C-DATAs communicate with each other by exchanging messages through communication channels. This approach considers both timing constraints and interaction durations between web services.