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For service-based applications which are composed of multiple independent third-parties, continuous monitoring is required to assure that runtime behavior of the systems complies with specified properties. However, most existing work only detects the violation while not consider how to enforce the properties so that the constraint can not be violated at runtime. To address this limitation, this paper...
Web-based API is a new trend for publishing services. To correctly use the API, developers should follow certain service specifications. Data contract is a service specification to express the constraints over the data model used in the APIs. Data contracts, however are not always readily available in a formalized format if not undocumented at all. In this paper, we present an approach to infer formal...
Runtime monitoring of Web service compositions has been widely acknowledged as a significant approach to understand and guarantee the quality of services. However, existing runtime monitoring solutions consider only the constraints on the sequence of messages exchanged between partner services and ignore the actual data contents inside the messages. As a result, it is difficult to monitor some dynamic...
Runtime monitoring of Web service compositions with WS-BPEL has been widely acknowledged as a significant approach to understand and guarantee the quality of services. However, most existing monitoring technologies only track patterns related to the execution of an individual process. As a result, the possible inconsistency failure caused by implicit interactions among concurrent process instances...
The execution of composite web services with WS-BPEL relies on externally autonomous Web services. This implies the need to constantly monitor the running behavior of the involved parties. Moreover, monitoring the execution of such processes is critical to enforce business policies and meet reliability goals. This paper proposes a stateful aspect extension to WS-BPEL, as a solution to support flexible...
There are many different e-learning system and educational resources, which have cause the problems, such as standard was not unified, resources was difficult to be shared, the supporting service need to be improved. The paper proposed an Educational Resources Public Service Platform based on Heterogeneous Data Exchange (ERPSP). ERPSP is an E-learning Resources Platform integrates all levels of educational...
The rapid increase of e-learning resource makes it difficult to make, find access and reuse useful resource. To solve the problem, we develop a standardized content service system (SCSS) for distributed learning resource. The system is based on J2EE technology and Web services. It can provide the service for the conversion of non-standard resource and the development of standard resource. It also...
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