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annotate Lib/IMPL/Web/View/Metadata/ObjectMeta.pm @ 375:441e84031c7b

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docs
author cin
date Fri, 10 Jan 2014 16:33:00 +0400
parents d5c8b955bf8d
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1 package IMPL::Web::View::Metadata::ObjectMeta;
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2 use strict;
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3
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4 use IMPL::lang;
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5 use IMPL::Const qw(:prop :access);
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6 use IMPL::declare {
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7 require => {
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8 Exception => 'IMPL::Exception',
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9 ArgException => '-IMPL::InvalidArgumentException',
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10 OpException => '-IMPL::InvalidOperationException',
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11 PropertyInfo => 'IMPL::Class::PropertyInfo',
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12 AbstractObject => '-IMPL::Object::Abstract'
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13 },
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14 base => [
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15 'IMPL::Web::View::Metadata::BaseMeta' => sub {
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16 my ($model,$type,$args) = @_;
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17 $type ||= typeof($model);
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18 return ($model,$type,$args);
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19 }
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20 ],
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21 props => [
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22 isMultiple => PROP_RO,
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23 holdingType => PROP_RO
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24 ]
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25 };
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26
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27 use constant {
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28 Meta => __PACKAGE__
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29 };
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30
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31 sub CTOR {
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32 my ($this,$model,$type,$args) = @_;
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33
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34 $type = $this->modelType;
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35
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36 $args->{isMultiple} ||= $type && $type eq 'ARRAY';
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37
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38 if ($args) {
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39 $this->$_($args->{$_}) foreach grep $args->{$_}, qw(isMultiple holdingType);
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40 }
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41 }
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42
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43 sub PopulateProperties {
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44 my ($this) = @_;
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45
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46 my %seen;
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47 my @props;
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48
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49 my $modelType = $this->modelType;
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50
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51 if ( isclass($modelType,AbstractObject) ) {
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52 foreach my $pi (
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53 $this->modelType->GetMeta(
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54 PropertyInfo,
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55 sub { not($seen{$_}++) and $_->access == ACCESS_PUBLIC },
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56 1
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57 )
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58 ) {
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59 my $pv = $this->model && $pi->getter->($this->model);
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60 my $pt;
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61
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62 my %args = (name => $pi->name);
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63 if ($pi->isList) {
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64 $pt = 'ARRAY';
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65 $args{isMultiple} = 1;
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66 $args{holdingType} = $pi->type;
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67 } else {
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68 $pt = $pi->type;
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69 }
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70
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71 push @props, Meta->new($pv, $pt, \%args);
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72 }
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73 } elsif ( $modelType && $modelType eq 'HASH' ) {
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74 while ( my ($k,$v) = each %{$this->model || {}} ) {
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75 push @props, Meta->new($v,undef,{name => $k});
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76 }
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77 }
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78
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79 return \@props;
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80 }
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81
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82 sub GetItems {
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83 my ($this) = @_;
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84
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85 die OpException->new("The operation must be performed on the container")
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86 unless $this->isMultiple;
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87
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88 my $i = 0;
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89
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90 return [
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91 map $this->_GetItemMeta($_,$i++), @{$this->model || []}
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92 ];
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93 }
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94
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95 sub GetItem {
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96 my ($this,$index) = @_;
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97
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98 die OpException->new("The operation must be performed on the container")
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99 unless $this->isMultiple;
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100
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101 my $item = @{$this->model || []}[$index];
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102
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103 return $this->_GetItemMeta($item,$index);
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104 }
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105
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106 sub _GetItemMeta {
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107 my ($this,$item,$index) = @_;
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108
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109 return Meta->new(
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110 $item,
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111 $this->holdingType,
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112 {
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113 name => $index,
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114 container => $this
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115 }
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116 );
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117 }
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118
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119 sub GetMetadataForModel {
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120 my ($self,$model,$args) = @_;
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121
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122 $args ||= {};
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123
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124 return $self->new(
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125 $model,
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126 delete $args->{modelType},
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127 $args
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128 )
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129 }
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130
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131 1;
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132
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133 __END__