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Research on Behavioral Adaptation of Web Service

Author: ZuoJingJing
Tutor: WuJian;DengShuiGuang
School: Zhejiang University
Course: Applied Computer Technology
Keywords: Service-Oriented Architecture (SOA) Web Services Adapter π-calculus Mismatch detection Adapter
CLC: TP393.09
Type: Master's thesis
Year: 2008
Downloads: 141
Quote: 2
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Abstract


Service-oriented architecture (Service oriented Architecture SOA) as a new architecture of distributed software systems for shared services in the Internet environment, service reuse, business integration provides a new solution, it can achieve between systems loosely coupled, thereby improving the reusability of software components. Web services technology is the key to achieve SOA technology, however, the heterogeneous nature of Web services, dynamic, distributed and evolving characteristics synergistic interaction between the service is complicated. Therefore, how to improve coordination between the services the correctness and reliability of the key issues of the implementation of SOA. Web service adaptation is a feasible way to solve this problem, but also to promote the application of service-oriented software architecture and implementation of key technologies. Based on analysis of Web services adapter technology development status around the Web service behavior model, the Web service for misconduct with detection and automatic adaptation to commence a study, the main work and contributions include the following four aspects: 1) Web services the formal expression of the behavioral model to express the process flow, the dynamic behavior of the state transition, messaging attributes common behavioral model proposed behavior model based on π calculus formal expression, the use of the π-calculus operational semantics and auxiliary tools conduct a rigorous analysis and derivation of the service interaction behavior. 2) Web service behavior interact mismatch detection algorithm based on the general behavior of the model with the formal representation, design a set of efficient the mismatch detection mechanisms to accurately capture the mismatch point, and customize a reasonable mismatch models and classification rules, after the detection of a mismatch points, based on the type of mismatch timely mode mismatch recognition, diagnosis is based on providing for the adaptation. 3) Web service interactions the adapter generated and algorithm based on the result of the mismatch detection, the paper also studied the behavioral characteristics of the different the mismatch points and mismatch mode adapter, on the basis of formal methods in the behavioral model Research adapter generation rules, the last generation rules-based and formal deduction the adapter automatically generated construction algorithm. 4) designed to support automatic adaptation of Web service composition prototype system supports automatic adaptation of Web service composition prototype system architecture, this architecture portrayed from the abstract level service adaptation process, based on the abstract architecture of thinking, developed a set of service process modeling module, service composition authentication module, service behavior mismatch detection module, service behavior adaptation module and service processes operating platform functionality in one of the Web service composition prototype system.

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CLC: > Industrial Technology > Automation technology,computer technology > Computing technology,computer technology > Computer applications > Computer network > General issues > The application of computer network
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