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Research on Internet-Based Component/Service Composition

Author: LiPeng
Tutor: LiuGuoZhong
School: Harbin Institute of Technology
Course: Computer Science and Technology
Keywords: services composition requirements division service selection heterogeneous message transformation
CLC: TP393.09
Type: Master's thesis
Year: 2009
Downloads: 31
Quote: 0
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With the continuous development of Service Oriented Architecture, the whole IT industry starts to turn to it. Enterprises begin to meet user’s quickly changed needs by integrating available service resources supplied by other enterprises to a new service, which can make enterprises keep competitive in the market. However, the services supplied by other enterprises over the Internet are dynamic, distributed and heterogeneous, which seriously hampers the successful integration of services. So in order to solve the problems mentioned above effectively, and make the integration of services carried out efficiently and smoothly, in this Dissertation, methods of component and service composition based on internet are studied.In the aspect of theory research, a user-oriented web service composition model is studied, which divides composition process into four phases, which are division of user’s requirements, selection of web services, implementation of web services composition and combination of the output of web services composited. In the phase of division of user’s requirements, a method based on configurable composition schema for the input and division of user’s requirements of service is studied, which uses XML to store the composition template then instruct the division. In the phase of selection of web services, a QoS-based model for web services selection is established, and a selection algorithm is used to filter insecure services and supply user with candidate services which meet user’s personal need. In the phase of implementation of web services composition, a middle schema-based method is proposed to solve heterogeneous message mapping and transformation. By storing the mapping and transformation rule in the XSL file, a transformation algorithm is used to transform heterogeneous message to implement the transparent deliver of it.In the aspect of implementation, a service composition platform applied in Logistic area is designed and implemented with the Struts2 application software framework. The platform applies the services composition model and algorithm related mentioned above to composite the sub service of cargo transportation supplied by vehicle team and the sub service of cargo storage supplied by warehouse owner into a whole service to cargo owner, then develop s transportation management system and a storage management system, which are based on CERP framework, distributed and heterogeneous to the platform, as testcases to test the function of the composition platform. At the same time, the feasibility and effectiveness of the model, methods and algorithm brought up by this Dissertation are verified.

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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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