LiU-ITN-TEK-A--08/013--SE A method for a small web site to add some video sharing features Juan Lucas Madurga Martín-Serrano 2008-01-31 Department of Science and Technology Institutionen för teknik och naturvetenskap Linköping University Linköpings Universitet SE-601 74 Norrköping, Sweden 601 74 Norrköping LiU-ITN-TEK-A--08/013--SE A method for a small web site to add some video sharing features Examensarbete utfört i datavetenskap vid Tekniska Högskolan vid Linköpings unversitet Juan Lucas Madurga Martín-Serrano Examinator Bengt Lennartsson Norrköping 2008-01-31 Upphovsrätt Detta dokument hålls tillgängligt på Internet – eller dess framtida ersättare – under en längre tid från publiceringsdatum under förutsättning att inga extra- ordinära omständigheter uppstår. Tillgång till dokumentet innebär tillstånd för var och en att läsa, ladda ner, skriva ut enstaka kopior för enskilt bruk och att använda det oförändrat för ickekommersiell forskning och för undervisning. 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For additional information about the Linköping University Electronic Press and its procedures for publication and for assurance of document integrity, please refer to its WWW home page: http://www.ep.liu.se/ © Juan Lucas Madurga Martín-Serrano Summary/Abstract: The aim of this diploma work is to compare and evaluate different methods to enable small web sites to make available videos which will be shared the users. Storage and bandwidth problems of small web sites are taken into account. The requirements of the system were defined as: configurable, feasible, easy use and easy to integrate. Existing solutions and different implementation alternatives are analyzed. With a tool based upon a CMS, using recordings residing on powerful dedicated video providers and with AJAX “technology”, the criteria are fulfilled. As part of the investigation, a prototype tool based upon TYPO3 has been implemented. 1 Content Summary/Abstract: ..............................................................................................................................1 Content.................................................................................................................................................2 1 Introduction..................................................................................................................................3 1.1 Background:.........................................................................................................................3 1.2 Purpose of the thesis: ...........................................................................................................3 2 State of Art...................................................................................................................................4 3 Definition of problem scenario. Study of alternatives .................................................................6 3.1 Methodology ........................................................................................................................6 3.2 Scenario................................................................................................................................6 3.3 System characteristics..........................................................................................................6 3.3.1 Feasible ........................................................................................................................6 3.3.2 Easy integration............................................................................................................6 3.3.3 Easy configuration .......................................................................................................7 3.3.4 Easy use........................................................................................................................7 3.4 Alternatives and decisions ...................................................................................................7 3.4.1 Feasible ........................................................................................................................7 3.4.2 Easy Integration ...........................................................................................................8 3.4.3 Easy configuration .....................................................................................................11 3.4.4 Easy use......................................................................................................................11 3.4.5 Existing solutions analysis.........................................................................................13 4 System development life cycle ..................................................................................................14 4.1 Methodology ......................................................................................................................14 4.2 Requirements .....................................................................................................................14 4.2.1 Functional requirements.............................................................................................14 4.2.2 Non functional requirements......................................................................................15 4.3 Use cases diagram..............................................................................................................16 4.4 Use case description...........................................................................................................17 4.5 Construction.......................................................................................................................21 4.5.1 High-Level Design.....................................................................................................21 4.5.1.1 Conceptual model ..................................................................................................21 4.5.1.2 System sequence diagram:.....................................................................................22 4.5.1.3 Contracts ................................................................................................................23 4.5.2 Low-Level Design......................................................................................................25 4.5.2.1 Architecture: Model-View-Controller: ..................................................................25 4.5.2.2 Interactions diagrams .............................................................................................26 4.5.2.3 Classes Diagram.....................................................................................................32 4.5.2.4 ER Diagram............................................................................................................33 4.5.3 Implementation ..........................................................................................................34 4.6 Demonstration....................................................................................................................37 5 Conclusions................................................................................................................................49 References..........................................................................................................................................50 2 1 Introduction 1.1 Background: An already built small web site allows exchange of information between users groups with something in common. These users share interests, ideas, knowledge or simply live in the same geographic zone. The administrators want to promote the web site providing new complementary services. A good alternative may be sharing videos. Size of video files may cause storage and bandwidth problems. The small web site does not have a big amount of resources to solve them. Having a big group of developers is not possible; therefore any changes made in the current site should be easy to integrate and not problematic. Which