Mercurial > hg > ltpda

annotate m-toolbox/classes/@ltpda_uo/fromRepository.m @ 2:18e956c96a1b database-connection-manager

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Add LTPDADatabaseConnectionManager implementation. Matlab code
author Daniele Nicolodi <nicolodi@science.unitn.it>
date Sun, 04 Dec 2011 21:23:09 +0100
parents f0afece42f48
children 69e3d49b4b0c
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Daniele Nicolodi <nicolodi@science.unitn.it>
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1 % Retrieve a ltpda_uo from a repository
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2 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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3 %
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4 % FUNCTION: fromRepository
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5 %
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6 % DESCRIPTION: Retrieve a ltpda_uo from a repository
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7 %
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8 % CALL: obj = fromRepository(pl)
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9 %
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10 % PARAMETER: pl: Parameter list object
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11 %
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12 % VERSION: $Id: fromRepository.m,v 1.4 2010/03/16 19:16:20 ingo Exp $
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13 %
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14 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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15 function [objs, plhout, ii] = fromRepository(obj, pli, ii)
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16
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17 VERSION = 'ltpda_uo: $Id: fromRepository.m,v 1.4 2010/03/16 19:16:20 ingo Exp $';
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18
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19 requested_class = class(obj);
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20
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21 % Set the method version string in the minfo object
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22 ii.setMversion([VERSION '-->' ii.mversion]);
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23
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24 % Check if the user supplied a DB connection
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25 conn = find(pli, 'conn');
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26
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27 % Add default values if necessary
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28 if isempty(conn)
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29 pl = combine(pli, ii.plists.pset('HOSTNAME', ''));
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30 else
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31 pl = pli;
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32 end
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33
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34 % Get parameters
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35 hostname = find(pl, 'hostname');
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36 database = find(pl, 'database');
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37 user = find(pl, 'username');
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38 passwd = find(pl, 'password');
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39 ids = find(pl, 'id');
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40 cids = find(pl, 'cid');
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41 bin = find(pl, 'binary');
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42
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43 % Make sure that 'ids' or 'cids' are empty arrays if they are empty.
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44 % It might be that the GUI return an empty string.
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45 if isempty(ids)
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46 ids = [];
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47 end
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48 if isempty(cids)
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49 cids = [];
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50 end
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51
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52 % Check if some ID is defined
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53 if isempty(ids) && isempty(cids)
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54 error('### Please define at least one object ID or connection ID');
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55 end
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56
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57 %%% check if using binary or not: 'yes'/'no' or true/false or
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58 %%% 'true'/'false'
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59 bin = utils.prog.yes2true(bin);
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60
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61 % do we have a connection?
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62 closeConn = 0;
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63 if isempty(conn)
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64 closeConn = 1;
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65 % Connect to repository
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66 conn = utils.jmysql.connect(hostname, database, user, passwd);
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67 end
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68 if ~isa(conn, 'database') && ~isa(conn, 'mpipeline.repository.RepositoryConnection')
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69 error('### connection to the database failed.');
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70 end
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71
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72 if ~isempty(cids)
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73 for kk=1:numel(cids)
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74 cid = cids(kk);
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75 if isa(conn, 'database')
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76 % get the ids from the cid
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77 ids = [ids utils.mysql.getObjIds(conn,cid)];
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78 else
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79 c_ids = double(mpipeline.repository.MySQLUtils.getObjectIDsFromCollectionID(conn, cid));
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80 ids = [ids c_ids.'];
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81 end
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82 end
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83 end
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84
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85 % Get each ID
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86 Nids = length(ids);
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87 objs = [];
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88 plhout = [];
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89
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90 for kk=1:Nids
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91
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92 %---- copy the input plist because each object should get an other plist
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93 plh = copy(pl, 1);
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94
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95 %---- This id
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96 id = ids(kk);
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97 utils.helper.msg(utils.const.msg.OPROC2, 'retrieving ID %d', id);
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98
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99 %---- call database constructor
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100 if bin
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101 try
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102 obj = ltpda_uo.retrieve(conn, 'binary', id);
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103
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104 catch
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105
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106 if ~conn.isConnected()
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107 error('### There is something wrong with the connection.')
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108 end
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109
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110 warning('!!! Unable to do binary retrieval for object %d; trying to retrieve XML instead.', id);
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111 obj = ltpda_uo.retrieve(conn, id);
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112 end
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113 else
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114 obj = ltpda_uo.retrieve(conn, id);
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115 end
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116
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117 if ~strcmp(class(obj), requested_class)
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118 error('### You have used the constructor ''%s'' but the object with id=%d is of class ''%s''', requested_class, id, class(obj));
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119 end
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120
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121 % - remove connection object from plist first
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122 if isempty(hostname) || isempty(database)
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123 if isa(conn, 'database')
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124 txt = textscan(conn.URL, '%s', 'Delimiter', '/', 'CollectOutput', 1);
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125 plc = plist('hostname', txt{1}{3}, 'database', txt{1}{4});
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126 else
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127 plc = plist('hostname', char(conn.getHostname), 'database', char(conn.getDatabase));
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128 end
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129 plh = combine(pli, plc);
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130 end
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131
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132 %---- remove the connection from the history plist
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133 if plh.isparam('conn')
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134 plh.remove('conn');
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135 end
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136
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137 %---- Set only the ID of the current object to the plist
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138 plh.pset('ID', id);
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139
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140 %---- Add history-plist to output array
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141 plhout = [plhout plh];
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142
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143 %---- Add to output array
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144 objs = [objs obj];
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145
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146 end
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147
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148 % close connection
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149 if closeConn
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150 if isa(conn, 'database')
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151 close(conn);
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152 else
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153 conn.closeConnection;
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154 end
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155 end
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156
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157 end
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158