HUMSAT for state based web service composition

A business process implemented as a web service has two major components for orchestration and choreography. Its execution can be viewed as an ordered sequence of states and corresponding associated transitions. Hence, Finite State Machine (FSM) is considered as a natural choice to model web services. In this work we show that both orchestration and choreography for web services can be modeled by Annotated FSM (AFSM) - A FSM enriched with domain specific information. The transformation of an AFSM model to executable BPEL and WSDL code is demonstrated. Also briefly we discuss HUMSAT the tool developed to model web services and to automate the process of model transformation. © 2008 IEEE.