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AJAX model - based filtering engine

Author: SongZheQing
Tutor: LeiJinHui
School: Kunming University of Science and Technology
Course: Computer Software and Theory
Keywords: AJAX XML JSON JavaScript filtering engine
CLC: TP391.3
Type: Master's thesis
Year: 2008
Downloads: 18
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Abstract

In just a few years, the slogan "Web 2.0 era" has spread to every corner of the Internet. Let’s put aside its controversies, in an era when new technologies emerging, Web 2.0 undoubtedly represents a development trend on the Internet. It is this trend that promotes the development of new technologies. As far as Web 2.0’s values and significances are concerned, the Information Technology industry generally agrees that Web 2.0 gives users truly personalized, decentralized and information customized experiences. In the practical application of Web 2.0, existing technologies have been further developed, and a lot of new, popular things, including Blog, RSS (Really Simple Syndication), wiki and SNS (Social Networking Sites), are emerging.AJAX (Asynchronous JavaScript and XML) enjoyed immense popularity in the industry shortly after its emergence. The industry generally agrees that AJAX is the core technology of Web 2.0. AJAX uses asynchronous requests to create a series of amazing interaction, making users begin to believe similar desktop application interaction experience can be found in Web browsers. Many large companies in the industry have formulated their own AJAX strategies to address the new round of Internet reform which is taking place right now. In the light of this trend, various AJAX development Frameworks have been developed; Microsoft ASP.NET AJAX is one of the major Frameworks.This paper conducts an in-depth analysis of traditional AJAX development Framework, and based on that, identifies an area which can be improved in AJAX patterns. After thorough research on the principle of AJAX interaction, and based on the author’s past experience of AJAX system developments, this paper, using ASP.NET as a development platform and targeting commonly used AJAX Frameworks on the platform, designs an AJAX filtering engine. Under certain network conditions, the engine can effectively filter duplicated information user subsequently submitted and reduce the amount of information transmitted. Therefore, Web application’s efficiency can be improved, and network traffic can be reduced effectively. The engine’s design philosophy is based on the concept of making full use of idle resources on the client’s side to relieve the burden of the server and make further improvements to AJAX Frameworks.The work in this paper includes:(a) Conducts an in-depth research on commonly used AJAX Frameworks on ASP.NET platform; (b) Designs and implements filtering engine’s filtering algorithm; (c) Completely constructs and implements filtering engine’s Framework for client and server; (d) Encapsulates engine’s codes to reduce its complexity of practical use; (e) Adopts three kinds of technologies (ASP.NET, traditional AJAX, AJAX with filtering engine) to implement an AJAX filtering engine application system. The system simulates common information submission in Web application under typical scenarios to verify and demonstrate the filtering engine’s effectiveness. (f) Makes the conclusion of the application of the filtering engine based on the statistical analysis of the system’s test data. (g) The paper discusses accessibility and security issues, which are commonly found in various AJAX Frameworks, and provides corresponding solutions.

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