annotate Lib/IMPL/DOM/Transform/PostToDOM.pm @ 235:a4d9126edcbb

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author sergey
date Fri, 12 Oct 2012 02:08:51 +0400
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1 package IMPL::DOM::Transform::PostToDOM;
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2 use strict;
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3 use warnings;
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4
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5 use IMPL::Const qw(:prop);
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6 use IMPL::declare {
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7 require => {
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8 Builder => 'IMPL::DOM::Navigator::Builder'
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9 },
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10 base => [
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11 'IMPL::Transform' => sub {
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12 -plain => \&TransformPlain,
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13 HASH => \&TransformContainer,
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14 CGI => \&TransformCGI,
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15 CGIWrapper => \&TransformCGI
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16 }
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17 ],
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18 props => [
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19 documentClass => PROP_RO,
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20 documentSchema => PROP_RO,
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21 prefix => PROP_RO,
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22 _navi => PROP_RW,
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23 errors => PROP_RW | PROP_LIST,
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24 _schema => PROP_RW
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25 ]
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26 };
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27
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28 sub CTOR {
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29 my ($this,$docClass,$docSchema,$prefix) = @_;
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30 $docClass ||= 'IMPL::DOM::Document';
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31
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32 $this->_navi(
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33 IMPL::DOM::Navigator::Builder->new(
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34 $docClass,
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35 $docSchema
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36 )
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37 );
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38 $this->_schema($docSchema);
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39 $this->prefix($prefix) if $prefix;
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40 }
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41
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42 sub TransformContainer {
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43 my ($this,$data) = @_;
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44
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45 my $navi = $this->_navi;
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46
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47 foreach my $key (
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48 sort { $a->[1] cmp $b->[1] || $a->[2] <=> $b->[2]}
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49 map [$_,/(\w+)(?:\[(\d+)\])?/], keys %$data
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50 ){
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51 my $value = $data->{$key->[0]};
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52 my $node = $navi->NavigateCreate($key->[1]);
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53
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54 $node->nodeProperty(instanceId => $key->[2]) if defined $key->[2];
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55
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56 $this->Transform($value);
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57
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58 $navi->Back();
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59 }
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60
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61 return $navi->Current;
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62 }
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63
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64 sub TransformPlain {
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65 my ($this,$data) = @_;
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66
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67 $this->_navi->Current->nodeValue( $this->_navi->inflateValue($data) );
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68 }
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69
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70 sub TransformCGI {
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71 my ($this,$query) = @_;
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72
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73 my $data={};
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74
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75 my $prefix = $this->prefix;
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76 my $delim = $this->delimiter;
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78 foreach my $param (grep index($_,$prefix) >= 0 , $query->param()) {
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79 length (my $value = $query->param($param)) or next;
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80
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81 my @parts = split /\//,$param;
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82
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83 my $node = $data;
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84 while ( my $part = shift @parts ) {
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85 if (@parts) {
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86 $node = ($node->{$part} ||= {});
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87 } else {
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88 $node->{$part} = $value;
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89 }
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90 }
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91 }
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92
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93 if (keys %$data > 1) {
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94 $data = { document => $data };
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95 }
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96
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97 my $doc = $this->Transform($data);
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98 $doc->nodeProperty( query => $query );
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99 $this->errors->Append( $this->_navi->BuildErrors);
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100 $this->errors->Append( $this->_schema->Validate($doc));
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101 return $doc;
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102 }
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103
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104 1;
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105
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106 __END__
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107
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108 =pod
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109
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110 =head1 NAME
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111
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112 C<IMPL::DOM::Transform::PostToDOM> - Преобразование объекта C<CGI> в DOM документ.
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113
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114 =head1 SINOPSYS
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115
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116 =begin code
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117
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118 my $schema = IMPL::DOM::Schema->LoadSchema('Data/user.add.schema.xml');
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119
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120 my $transform = IMPL::DOM::Transform::PostToDOM->new(
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121 undef, # default class
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122 $schema,
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123 $schema->selectSingleNode('ComplexNode')->name
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124 );
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125
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126 my $doc = $transform->Transform(
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127 CGI->new({
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128 'user/login' => 'bob',
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129 'user/fullName' => 'Bob Marley',
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130 'user/password' => 'secret',
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131 'user/password_retype' => 'secret',
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132 'user/birthday' => '1978-12-17',
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133 'user/email[1]' => 'bob@marley.com',
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134 'user/email[2]' => 'bob.marley@google.com',
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135 process => 1
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136 })
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137 );
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138
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139 =end code
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140
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141 =head1 DESCRIPTION
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142
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143 Используется для преобразования CGI запроса в DOM документ. Для этого используются параметры запроса, имена которых
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144 начинаются со значение из свойства C<prefix>.
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145
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146 Имена параметров интерпретируются следующим образом
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147
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148 =over
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150 =item 1 Имя параметра составляется из имени узла, имен всех его родителей и указанием номера экземпляра.
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151
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152 =item 2 Имена узлов могут содержать только буквы, цифры и символ _
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153
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154 =item 3 В случае когда узел может повторяться несколько раз, в квадратных скобках указывается
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155 послеовательный номер экземпляра.
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156
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157 =item 4 Имена параметров объединяются через символ '/'
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158
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159 =back
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160
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161 =cut