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annotate m-toolbox/classes/@ltpda_uo/setPropertyValue.m @ 8:2f5c9bd7d95d database-connection-manager

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Clarify ltpda_uo.retrieve parameters handling
author Daniele Nicolodi <nicolodi@science.unitn.it>
date Mon, 05 Dec 2011 16:20:06 +0100
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children
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Daniele Nicolodi <nicolodi@science.unitn.it>
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1 % SETPROPERTYVALUE sets the value of a property of one or more objects.
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2 %
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3 % CALL:
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4 % varargout = setPropertyValue(inputs, ...
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5 % input_names, ...
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6 % callerIsMethod, ...
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7 % propName, ...
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8 % setterFcn, ...
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9 % copy, ...
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10 % getInfo)
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11 %
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12 %
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13 %
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14 %
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15 %
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16 % The setterFcn should have the following signature:
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17 %
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18 % setterFcn(object, plist, value)
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19 %
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20 % The plist is passed to allow the setter function to modify the plist if
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21 % necessary.
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22 %
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23 %
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24 function varargout = setPropertyValue(varargin)
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25
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26 % get inputs
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27 inputs = varargin(1:end-6);
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28 input_names = varargin{end-5};
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29 callerIsMethod = varargin{end-4};
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30 propName = varargin{end-3};
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31 setterFcn = varargin{end-2};
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32 doCopy = varargin{end-1};
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33 getInfo = varargin{end};
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34
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35 % Check if this is a call for parameters
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36 if utils.helper.isinfocall(varargin{1:end-6})
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37 varargout{1} = getInfo(varargin{3});
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38 return
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39 end
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40
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41 % Collect inputs
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42 if callerIsMethod
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43 objects = inputs{1};
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44 pls = [];
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45 rest = inputs(2:end);
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46 obj_invars = {};
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47 else
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48 [objects, obj_invars, rest] = utils.helper.collect_objects(inputs(:), '', input_names);
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49 [pls, pl_invars, rest] = utils.helper.collect_objects(rest(:), 'plist');
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50 % Copy the user input plists because they may be modified in the setter
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51 % functions.
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52 if ~isempty(pls)
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53 pls = copy(pls, 1);
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54 end
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55 end
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56
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57 % Process the values we want to set
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58 [objects, values] = processSetterValues(objects, pls, rest, propName);
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59
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60 % Decide on a deep copy or a modify
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61 bs = copy(objects, doCopy);
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62
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63 usedValues = cell(size(bs));
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64 if isempty(setterFcn)
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65
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66 if isempty(values)
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67 error('Please provide a value for the property ''%s''', propName);
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68 end
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69
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70 for jj=1:numel(bs)
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71 usedValues{jj} = defaultSetter(bs(jj), values{jj}, propName);
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72 end
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73
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74 else
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75 % Loop over objects and set the values by calling the setter function
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76 for jj = 1:numel(bs)
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77 if isempty(values)
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78 if isempty(pls)
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79 % here we create a plist so that the setterFcn has a plist in
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80 % case it wants to modify it before it goes in the history.
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81 pls = plist();
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82 end
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83 usedValues{jj} = setterFcn(bs(jj), pls);
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84 else
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85 usedValues{jj} = setterFcn(bs(jj), pls, values{jj});
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86 end
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87 end
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88 end
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89
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90
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91 % Set output
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92 varargout{1} = bs;
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93 if nargout > 1
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94 varargout{2} = usedValues;
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95 end
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96 if nargout > 2
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97 varargout{3} = pls;
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98 end
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99 if nargout > 3
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100 varargout{4} = obj_invars;
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101 end
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102
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103 end
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104 % END
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105
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106 % Default setter function to set the description
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107 %
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108 % defaultSetter(obj, value, propertyName)
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109 %
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110 function value = defaultSetter(varargin)
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111
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112 obj = varargin{1};
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113 value = varargin{2};
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114 propName = varargin{3};
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115
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116 % TODO: we could check the type of value here against the default/defined value
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117
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118 obj.(propName) = value;
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119
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120 end