Reliable Transactional Web Service Composition using Refinement Method

Web services composition is a good way to construct complex Web software. However, Web services composition is prone to fail due to the unstable Web services execution. Thus, it is necessary to deal with the abstract hierarchical modeling of multi-partner business process. Therefore, this paper proposes a refinement method for failure compensation process of transaction mechanism, constructs failure service composition compensation model with the help of paired Petri net and builds a services composition compensation model. It discusses the refinement model and aggregated QoS estimation of the five common aggregation compensation constructs. It takes the classical traveling reservation business process as an example to show the influence on composite business process brought by the aggregated QoS metrics in different failure points, and analyzes the influence of reputation in different failure rate.