Mercurial > hg > ltpda

annotate m-toolbox/classes/@plist/subset.m @ 42:f90d4f666cc7 database-connection-manager

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Cleanup
author Daniele Nicolodi <nicolodi@science.unitn.it>
date Mon, 05 Dec 2011 18:04:34 +0100
parents f0afece42f48
children
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Daniele Nicolodi <nicolodi@science.unitn.it>
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1 % SUBSET returns a subset of a parameter list.
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2 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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3 %
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4 % DESCRIPTION: SUBSET returns a subset of a parameter list.
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5 %
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6 % CALL: p = subset(pl, 'key')
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7 % p = subset(pl, search_pl)
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8 % p = subset(pl, 'key1', 'key2')
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9 % p = subset(pl, {'key1', 'key2'})
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10 %
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11 % A warning is given for any key not in the original plist.
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12 %
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13 % <a href="matlab:utils.helper.displayMethodInfo('plist', 'subset')">Parameters Description</a>
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14 %
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15 % VERSION: $Id: subset.m,v 1.6 2011/04/08 08:56:20 hewitson Exp $
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16 %
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17 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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18
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19 function varargout = subset(varargin)
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20
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21 %%% Check if this is a call for parameters
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22 if utils.helper.isinfocall(varargin{:})
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23 varargout{1} = getInfo(varargin{3});
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24 return
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25 end
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26
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27 % Check inputs
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28 if nargin < 2
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29 error('### Incorrect inputs')
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30 end
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31
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32 if nargout ~= 1
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33 error('### Incorrect outputs. plist/subset cannot be used as a modifier.');
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34 end
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35
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36 % The first input is the plist to extract the subset of
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37 pl = varargin{1};
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38
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39 % Collect the keys to search for
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40 keys = {};
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41 for kk=2:nargin
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42 if iscell(varargin{kk})
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43 keys = [keys varargin{kk}];
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44 elseif isa(varargin{kk}, 'plist')
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45 pli = varargin{kk};
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46 ikeys = pli.find('keys');
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47 if ~isempty(ikeys)
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48 keys = [keys ikeys];
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49 end
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50 else
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51 keys = [keys varargin(kk)];
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52 end
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53 end
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54
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55 % Convert input keys to upper case
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56 keys = upper(keys);
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57
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58 % Check we got some keys
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59 if isempty(keys)
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60 error('### Please specify at least one key');
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61 end
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62
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63 % We only handle one input plist
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64 if numel(pl) ~= 1
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65 error('### This function can only work with one plist-object');
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66 end
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67
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68 % Get parameters we want
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69 pl_out = plist();
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70 for kk=1:pl.nparams
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71 if ismember(pl.params(kk).key, keys)
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72 pl_out.append(copy(pl.params(kk),1));
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73 end
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74 end
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75
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76 % Check the plist contains all the requested keys
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77 for kk=1:numel(keys)
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78 if pl_out.nparams == 0 || ~ismember(keys{kk}, {pl_out.params(:).key})
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79 warning('The key ''%s'' was not found in the original plist', keys{kk});
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80 end
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81 end
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82
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83 % Set output
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84 if nargout == 1
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85 varargout{1} = pl_out;
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86 else
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87 error('### Incorrect number of outputs');
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88 end
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89 end
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90
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91 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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92 % Local Functions %
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93 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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94
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95 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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96 %
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97 % FUNCTION: getInfo
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98 %
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99 % DESCRIPTION: Get Info Object
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100 %
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101 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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102
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103 function ii = getInfo(varargin)
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104 if nargin == 1 && strcmpi(varargin{1}, 'None')
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105 sets = {};
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106 pl = [];
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107 else
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108 sets = {'Default'};
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109 pl = getDefaultPlist;
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110 end
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111 % Build info object
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112 ii = minfo(mfilename, 'plist', 'ltpda', utils.const.categories.helper, '$Id: subset.m,v 1.6 2011/04/08 08:56:20 hewitson Exp $', sets, pl);
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113 ii.setModifier(false);
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114 ii.setArgsmin(1);
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115 end
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116
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117 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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118 %
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119 % FUNCTION: getDefaultPlist
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120 %
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121 % DESCRIPTION: Get Default Plist
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122 %
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123 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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124
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125 function pl = getDefaultPlist()
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126
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127 pl = plist();
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128
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129 % Keys
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130 p = param({'keys', 'The keys to search for.'}, paramValue.EMPTY_STRING);
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131 pl.append(p);
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132
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133 end
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134