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comparison m-toolbox/classes/@LTPDARepositoryManager/findConnections.m @ 0:f0afece42f48

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