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Due to the dynamic, heterogeneous and interorganizational nature, different web services and different ports or operations in the same service, even the same services at different times may have their different security requirements because of their different security domains and different business backgrounds. How to design a flexible, fine-grained and comprehensive architecture for web services...
With the rapid development of the Internet, web service technology has been extensively used in distributed applications and is highly likely to replace other various technologies for the distributed application development. However, concerning most hard issues of the web services authentication, no proper solutions have been discovered and available for use now. Due to its dynamic and cross-domain...
With the development of the Internet, Web Services technology has gradually become the development direction of the e-business, e-government and other fields, and the corresponding security mechanism has received unprecedented attention, while how to design an integrated architecture to enhance web services security remains a problem very difficult to tackle with, and there are no good solutions to...
It is very difficult to construct a correct BPEL engine, which is the runtime environment supporting the execution of BPEL processes. The main reason is the complexity of informal specification. It leads to that the programmers build the system without knowing precisely what they do. In this paper, we provide an operational semantics of BPEL based on Abstract BPEL Machine (ABM). ABM is a formal model...
Current BPEL engine products are difficult to meet the highly concurrent demands of increasing mission-critical business processes application. We follow the ideas of SEDA and propose a new architecture for high-concurrency BPEL engine, which we call SEDA4BPEL. In SEDA4BPEL, the implementation of BPEL related web services protocols is encapsulated into four primary event-driven stages, to provide...
Semantic Web service matchmaking is the process of searching the space of possible matches between demands and supplies, and finding the best available ones. To achieve this, the semantic Web service matchmaking framework is one of the absolutely necessary components of service oriented architecture. This paper introduces semantic condition expression which is designed to describe the semantic Web...
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