Thesis full text PDF (in Italian) - Politecnico di Milano

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The APIs used in order to get information from the different social networks,doesn’t provide methods that give the possibility to check if a socialusername/user id, really exists.In order to solve this problem, some tests have been done, identifying that,information requested through invalid usernames/users id, raises exceptions.Due to this consideration, the implemented validation servlet (see fig. 25), try toget social content with the specified username/user id, if the method fail, theexception handler sets “retValue” (previously set to true) to false, and thevalidation’s result, is sent back to the client.72
Second registration phaseThe memorization of the new user’s information is performed by the servlet“UserRegistration” (fig. 26), that receives data through a client POST.The method “checkUserRegistration()”, evaluates if the user is already presentcalculating a hash function over the email’s value (in this way is created the user’sidentifier), and making a comparison with all the ids of the users registered.If the user is not present, the registration of the new data is performed, and aconfirmation page is showed, else, the user is redirect to a fail page, showing thefailure’s motivations.Figure 26 - Class diagram related to the servlet“UserRegistration”Whether the user provides also his Facebook’s id, between the registration phaseand the confirmation page visualization, some additional steps has to becomputed, this due to the fact that with Facebook, by default, an application canaccess all the user’s profile general information (including name, profile picture,gender, etc.) but, if it needs to access others information, that may be private, an“extended permissions” request, has to be performed.In order to authorize the application to get access to the user’s id, the Facebookplatform uses the OAuth 2.0 12 protocol, associating to each user an access token,used to get information from his profile.12 OAuth 2.0: is a simpler version of OAuth that leverages SSL for API communication instead ofrelying on complex URL signature schemes and token exchanges.73
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POLITECNICO DI MILANOFacoltà di In
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SOMMARIO Negli ultimi anni, la diff
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ABSTRACT The online social networks
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1 INTRODUCTION In the last five yea
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elated to the user selected, resumi
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2 BACKGROUND 2.1 Online social ne
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After the subscription to an online
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2.2 Socials networks: some examp
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Other important features provided b
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Others mains features provided by t
Page 23 and 24: Introduce social BPM into a company
Page 25 and 26: online meetings (wiki meeting).Due
Page 27 and 28: 2.4 Analysis on social network T
Page 29 and 30: The high coefficient of local user
Page 31 and 32: 2.4.3 Modelling relationship stre
Page 33 and 34: 3 MAIN CONTRIBUTIONS Nowadays, the
Page 35 and 36: 3.1 User’s real-‐time updat
Page 37 and 38: 3.2 The “unified visibility pa
Page 39 and 40: user during the registration phase
Page 41 and 42: ss_slide_vis_wg 3 fb_photo_tag_vis_
Page 43 and 44: The following table (fig. 11) shows
Page 45 and 46: 3.3 Rendering temporal charts Tem
Page 47 and 48: As mentioned before, another way in
Page 49 and 50: Unified visibilitypanel1A page, wit
Page 51 and 52: ü Twitter: a micro blogging social
Page 53 and 54: ü Log of information and errors: t
Page 55 and 56: 4.4 Structure of the web applic
Page 57 and 58: 4.5 Data storage In order to store
Page 59 and 60: ü Tag PROFILES: node element that
Page 61 and 62: Figure 18 - Example of table contai
Page 63 and 64: Figure 19 - YouTube’s content tab
Page 65 and 66: Figure 21 - Twitter’s tables crea
Page 67 and 68: ü fb_group: memorizes the number o
Page 69 and 70: Into “util”, others sub-package
Page 71 and 72: First registration phaseThe sequenc
Page 73: Figure 25, shows the sequences of o
Page 77 and 78: 5. The Facebook’s server response
Page 79 and 80: 2. A request for the page “UserYt
Page 81 and 82: When the job is triggered, the meth
Page 83 and 84: 5 EXPERIMENTS AND EVALUATIONS In o
Page 85 and 86: 5.1 Politics and social networks
Page 87 and 88: Evidence on the use of social netwo
Page 89 and 90: independently by the last upload, r
Page 91 and 92: 5.3 Connection between profiles N
Page 93 and 94: interconnected the two social netwo
Page 95 and 96: By introducing the concept of socia
Page 97 and 98: 6.2 Future developments At the cur
Page 99 and 100: BIBLIOGRAPHY [1] Wikipedia - WEB 2.
Page 101: [27] SlideShare - SlideShare API -
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Thesis full text PDF (in Italian) - Politecnico di Milano

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