Rule-Based Automatic Generation of Mediator Patterns for Service Composition Mismatches

To perform service composition, mismatches are challenging obstacles due to the decentralization and independent development of services. Mediation, as a promising solution, attracts most attentions. And pattern based mediation proposed a modularly constructive thoughtway: Basic mediator patterns were created and sufficient for advanced mediators against all possible mismatches. The pattern structure is illustrated in this paper. And construction rules for each pattern are presented. Executable codes such as BPEL codes can be automatically generated from these rules. As a systematic engineering solution, its feasibility is validated through a case study in the end

Distributed Software Development Tools for Distributed Scientific Applications

This chapter provides a new methodology and two tools for user‐driven Wikinomics‐oriented scientific applications’ development. Service‐oriented architecture for such applications is used, where the entire research supporting computing or simulating process is broken down into a set of loosely coupled stages in the form of interoperating replaceable Web services that can be distributed over different clouds. Any piece of the code and any application component deployed on a system can be reused and transformed into a service. The combination of service‐oriented and cloud computing will indeed begin to challenge the way of research supporting computing development, the facilities of which are considered in this chapter

A theory and model for the evolution of software services

Software services are subject to constant change and variation. To control service development, a service developer needs to know why a change was made, what are its implications and whether the change is complete. Typically, service clients do not perceive the upgraded service immediately. As a consequence, service-based applications may fail on the service client side due to changes carried out during a provider service upgrade. In order to manage changes in a meaningful and effective manner service clients must therefore be considered when service changes are introduced at the service provider's side. Otherwise such changes will most certainly result in severe application disruption. Eliminating spurious results and inconsistencies that may occur due to uncontrolled changes is therefore a necessary condition for the ability of services to evolve gracefully, ensure service stability, and handle variability in their behavior. Towards this goal, this work presents a model and a theoretical framework for the compatible evolution of services based on well-founded theories and techniques from a number of disparate fields.

Selection and verification of workflows in multimedia service compositions

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