annotate m-toolbox/classes/@repogui2/cb_connect.m @ 40:977eb37f31cb database-connection-manager

User friendlier errors from utils.mysql.connect
author Daniele Nicolodi <nicolodi@science.unitn.it>
date Mon, 05 Dec 2011 18:04:03 +0100
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Daniele Nicolodi <nicolodi@science.unitn.it>
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1 % CB_CONNECT callback when the user clicks connect button.
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2 %
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3 % M Hewitson 22-09-08
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4 %
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5 % $Id: cb_connect.m,v 1.3 2011/04/08 08:56:36 hewitson Exp $
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6 %
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7
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8 function cb_connect(varargin)
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9
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10 myh = varargin{1};
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11 mainfig = varargin{end};
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12 status = findobj(mainfig.handle, 'Tag', 'RepoguiStatusTxt');
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13 panels = mainfig.panels;
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14
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15 % Get conn
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16 conn = mainfig.connection;
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17
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18 if isempty(conn)
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19
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20 % get hostname
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21 hostname = get(findobj(mainfig.handle, 'Tag','RepoguiServerEdit'), 'String');
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22
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23 % get the database
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24 db = get(findobj(mainfig.handle, 'Tag','RepoguiDatabaseEdit'), 'String');
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25
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26 if isempty(db)
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27 error('### Please select a database first.');
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28 end
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29
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30 % check for username and password
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31 dbuser = mainfig.dbuser;
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32 dbpass = mainfig.dbpass;
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33
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34 % connect
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35 if ~isempty(dbpass) && ~isempty(dbuser)
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36 conn = utils.mysql.connect(hostname, db, dbuser, dbpass);
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37 else
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38 [conn, dbpass] = utils.mysql.connect(hostname, db);
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39 end
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40 if isa(conn, 'database')
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41 mainfig.connection = conn;
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42 mainfig.username = conn.Username;
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43 set(myh, 'String', 'disconnect');
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44 set(status, 'String', sprintf('connected to %s on %s as %s', db, hostname, conn.Username));
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45
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46 % Set tables on query panel
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47 buildConditions(mainfig);
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48
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49 % store the connection
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50 mainfig.dbuser = conn.Username;
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51 mainfig.dbpass = dbpass;
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52 else
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53 set(status, 'String', 'not connected');
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54 error('Invalid connection.');
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55 end
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56 else
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57 % disconnect
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58 close(conn);
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59 conn = [];
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60 disp('* disconnected.');
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61 mainfig.connection = conn;
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62 mainfig.username = '';
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63 set(myh, 'String', 'connect');
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64 set(status, 'String', 'not connected');
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65 mainfig.dbuser = '';
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66 mainfig.dbpass = '';
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67 end
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68
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69 end