Formalized analysis method is a technology that insures quality of software reliability. It can detect mistakes and flaws effectively in software design. Based on the research of model checking techniques for composition of web services, we establish an automatic test framework for web services composition of BPEL. Static test method is used and test cases are generated automatically in this fr...

We describe the StAC language which can be used to specify the orchestration of activities in long running business transactions. Long running business transactions use compensation to cope with exceptions. StAC supports sequential and parallel behaviour as well as exception and compensation handling. We also show how the B notation may be combined with StAC to specify the data aspects of trans...

Grid computing aims to create an accessible virtual supercomputer by integrating distributed computers to form a parallel infrastructure for processing applications. To enable service-oriented Grid computing, the Grid computing architecture was aligned with the current Web service technologies; thereby, making it possible for Grid applications to be exposed as Web services. The WSRF set of spec...

With the advent of XML-based SOA, WS-BPEL shortly turned out to become a widely accepted standard for modeling business processes. Though SOA is said to embrace the principle of business agility, BPEL process definitions are still manually crafted into their final executable version. While SOA has proven to be a giant leap forward in building flexible IT systems, this static BPEL workflow model...

Correct synchronization among activities is critical in a business process. Current process languages such as BPEL specify the control flow of processes procedurally, which can lead to inflexible and tangled code for managing a crosscutting aspect—synchronization constraints that define permissible sequences of execution for activities. In this article, we present DSCWeaver, a tool that enables...

Controlling access to the Web services of public agencies and private corporations depends primarily on specifying and deploying functional security rules to satisfy strict regulations imposed by governments, particularly in the financial and health sectors. This paper focuses on one aspect of the SELKIS and EB3SEC projects related to the security of Web-based information systems, namely, the a...

The derivation of business process execution language (BPEL) for web services from graph-oriented process models has attained wide focus in the literature. It is a challenging work owing to the fundamental differences between graph-oriented models and BPEL. In this paper, a transformation of activity diagrams (AD) into BPEL is presented, which concentrates on a specific kind of structure in gra...

Management of the coordination between the control flow of the composition and the navigation flow of its user interface BPEL standard expresses a composition in a fully automated way How can users interact with the Web services during the composition execution? Motivation Design of an interactive Web service composition Generation of an adapted User Interface for the composition as well as an ...

BPEL (Business Process Execution Language) is proposed as a standard language to describe Web service fl ows. A fl ow may contain multiple activities that are executed concurrently, and thus removing faults such as deadlocks or violations of application-specifi c properties is not easy. This paper proposes techniques to extract a behavioral specifi cation from the BPEL program and to verity it ...

Modeling complex process control flows is made possible by the definition of the Web Services Business Process Execution Language (BPEL). This language, however, does not support the modeling of processes which involve human user interactions. For answering this need, an extension of BPEL has been developed, i.e. BPEL4People. The report presents the background and motivation for the development...