Mercurial > hg > ltpda

annotate m-toolbox/classes/@LTPDARepositoryManager/findConnections.m @ 24:056f8e1e995e database-connection-manager

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author Daniele Nicolodi <nicolodi@science.unitn.it>
date Mon, 05 Dec 2011 16:20:06 +0100
parents f0afece42f48
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Daniele Nicolodi <nicolodi@science.unitn.it>
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1 % FINDCONNECTIONS finds a managed connection.
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2 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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3 %
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4 % DESCRIPTION: FINDCONNECTIONS finds a managed connection.
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5 %
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6 % CALL: conns = rm.findConnections(pl);
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7 % conns = rm.findConnections('hostname');
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8 % conns = rm.findConnections('hostname', 'database');
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9 % conns = rm.findConnections('hostname', 'database', 'username');
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10 %
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11 % findConneciton finds all connections which match the given input fields.
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12 % If no matching connections are found then the method returns an emtpy
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13 % array. To search for all 'hostnames' for a given 'username', enter an
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14 % empty string. For example:
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15 %
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16 % 1) Find all connections for user 'bob'
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17 %
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18 % pl = plist('username', 'bob');
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19 % conns = rm.findConnections(pl);
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20 %
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21 % or
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22 %
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23 % conns = rm.findConnections('', '', 'bob');
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24 %
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25 % 2) Find all connection to 'localhost' for database 'foo'
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26 %
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27 % pl = plist('hostname', 'localhost', 'database', 'foo')
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28 % conns = rm.findConnections(pl);
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29 %
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30 % or
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31 %
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32 % conns = rm.findConnections('localhost', 'foo');
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33 %
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34 % 3) Find all connections to 'localhost' for user 'bob'
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35 %
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36 % conns = rm.findConnections('localhost', '', 'bob');
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37 %
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38 % <a href="matlab:web(LTPDARepositoryManager.getInfo('findConnections').tohtml, '-helpbrowser')">Parameters Description</a>
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39 %
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40 % VERSION: $Id: findConnections.m,v 1.7 2011/04/08 08:56:35 hewitson Exp $
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41 %
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42 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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43
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44 function varargout = findConnections(varargin)
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45
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46 % Check if this is a call for parameters
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47 if utils.helper.isinfocall(varargin{:})
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48 varargout{1} = getInfo(varargin{3});
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49 return
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50 end
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51
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52 import utils.const.*
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53 utils.helper.msg(msg.PROC3, 'running %s/%s', mfilename('class'), mfilename);
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54
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55 % Get the repository manager - there should only be one!
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56 [rm, invars, rest] = utils.helper.collect_objects(varargin(:), 'LTPDARepositoryManager');
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57
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58 % Collect all plists
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59 [pl, invars, rest] = utils.helper.collect_objects(rest(:), 'plist');
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60
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61
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62 pl = combine(pl, getDefaultPlist);
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63 hostname = pl.find('hostname');
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64 database = pl.find('database');
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65 username = pl.find('username');
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66
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67 % Check through 'rest'
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68 if numel(rest) > 0
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69 hostname = rest{1};
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70 end
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71 if numel(rest) > 1
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72 database = rest{2};
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73 end
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74 if numel(rest) > 2
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75 username = rest{3};
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76 end
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77
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78 % make sure that username are strings because JAVA interprets an empty
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79 % array [] as a null-pointer.
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80 if isempty(hostname), hostname = ''; end
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81 if isempty(database), database = ''; end
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82 if isempty(username), username = ''; end
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83
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84 conns = rm.manager.findConnections(hostname, database, username);
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85
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86 mconns = [];
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87 for i=1:conns.size
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88 mconns = [mconns conns.get(i-1)];
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89 end
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90
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91 % if isempty(mconns)
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92 % mconns = rm.newConnection(hostname, database, username);
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93 % end
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94 %
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95 utils.helper.msg(utils.const.msg.PROC1, 'Matched %d managed connections', numel(mconns));
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96
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97 if nargout > 0
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98 varargout{1} = mconns;
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99 end
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100
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101 end
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102
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103 %--------------------------------------------------------------------------
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104 % Get Info Object
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105 %--------------------------------------------------------------------------
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106 function ii = getInfo(varargin)
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107 if nargin == 1 && strcmpi(varargin{1}, 'None')
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108 sets = {};
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109 pl = [];
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110 else
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111 sets = {'Default'};
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112 pl = getDefaultPlist;
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113 end
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114 % Build info object
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115 ii = minfo(mfilename, 'LTPDARepositoryManager', 'ltpda', utils.const.categories.gui, '$Id: findConnections.m,v 1.7 2011/04/08 08:56:35 hewitson Exp $', sets, pl);
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116 end
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117
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118 %--------------------------------------------------------------------------
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119 % Get Default Plist
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120 %--------------------------------------------------------------------------
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121 function pl = getDefaultPlist()
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122
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123 % Initialise plist
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124 pl = plist();
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125
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126 % hostname
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127 p = param({'hostname', 'The hostname of the repository to connect to.'}, paramValue.EMPTY_STRING);
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128 pl.append(p);
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129
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130 % database
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131 p = param({'database', 'The database on the repository.'}, paramValue.EMPTY_STRING);
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132 pl.append(p);
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133
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134 % username
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135 p = param({'username', 'The username to connect with.'}, paramValue.EMPTY_STRING);
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136 pl.append(p);
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137
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138 end
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139 % END