annotate Lib/IMPL/DOM/Navigator/Builder.pm @ 387:4cc6cc370fb2

DOM refactoring
author sergey
date Tue, 11 Feb 2014 01:13:47 +0400
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1 package IMPL::DOM::Navigator::Builder;
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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
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7 use parent qw(IMPL::DOM::Navigator);
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8 use IMPL::Class::Property;
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9 require IMPL::DOM::Navigator::SchemaNavigator;
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10 require IMPL::DOM::Schema::ValidationError;
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11 use IMPL::DOM::Document;
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12
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13 BEGIN {
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14 private _direct property _schemaNavi => PROP_RW;
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15 private _direct property _docClass => PROP_RW;
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16 public _direct property Document => PROP_RO;
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17 public _direct property ignoreUndefined => PROP_RO;
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18 }
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19
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20 our %CTOR = (
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21 'IMPL::DOM::Navigator' => sub { IMPL::DOM::Document->Empty; }
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22 );
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23
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24 sub CTOR {
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25 my ($this,$docClass,$schema,%opts) = @_;
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26
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27 $this->{$_docClass} = $docClass;
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28 $this->{$_schemaNavi} = $schema ? IMPL::DOM::Navigator::SchemaNavigator->new($schema) : undef;
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29
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30 $this->{$ignoreUndefined} = $opts{ignoreUndefined} if $opts{ignoreUndefined};
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31 }
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32
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33 sub NavigateCreate {
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34 my ($this,$nodeName,%props) = @_;
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35
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36 if (my $schemaType = $this->{$_schemaNavi}->NavigateName($nodeName)) {
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37 my $class = $schemaType->can('nativeType') ? $schemaType->nativeType || 'IMPL::DOM::Node' : 'IMPL::DOM::Node';
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38
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39 my $schemaNode = $this->{$_schemaNavi}->SourceSchemaNode;
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40
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41 $props{schemaType} = $schemaType;
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42 $props{schemaNode} = $schemaNode;
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43
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44 my $node;
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45 if (! $this->{$Document}) {
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46 # keep reference to the schema document
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47 $props{schemaDocument} = $this->{$_schemaNavi}->schema;
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48 $node = $this->{$Document} = $this->{$_docClass}->new(nodeName => $nodeName,%props);
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49 $this->_initNavigator($node);
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50 } else {
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51 die new IMPL::InvalidOperationException('Can\'t create a second top level element') unless $this->Current;
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52 $node = $this->{$Document}->Create($nodeName,$class,\%props);
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53 $this->Current->appendChild($node);
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54 $this->internalNavigateNodeSet($node);
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55 }
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56
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57 return $node;
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58 } else {
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59 die new IMPL::InvalidOperationException("The specified node is undefined", $nodeName)
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60 if !$this->ignoreUndefined;
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61 return;
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62 }
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63 }
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65 sub Back {
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66 my ($this) = @_;
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67
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68 $this->{$_schemaNavi}->SchemaBack();
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69 $this->SUPER::Back();
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70 }
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71
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72 sub saveState {
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73 my ($this) = @_;
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74
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75 $this->{$_schemaNavi}->saveState;
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76 $this->SUPER::saveState;
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77 }
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78
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79 sub restoreState {
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80 my ($this) = @_;
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81
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82 $this->{$_schemaNavi}->restoreState;
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83 $this->SUPER::restoreState;
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84 }
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85
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86 sub document {
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87 goto &Document;
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88 }
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89
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90 1;
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91
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92 __END__
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93
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94 =pod
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95
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96 =head1 NAME
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97
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98 C< IMPL::DOM::Navigator::Builder > - Навигатор, строящий документ по указанной схеме.
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99
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100 =head1 SYNOPSIS
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101
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102 =begin code
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103
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104 my $builder = new IMPL::DOM::Navigator::Builder(new MyApp::Document,$schema);
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105 my $reader = new IMPL::DOM::XMLReader(Navigator => $builder);
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106
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107 $reader->ParseFile("document.xml");
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108
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109 my @errors = $schema->Validate($builder->Document);
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110
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111 =end code
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112
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113 =head1 DESCRIPTION
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114
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115 Построитель DOM документов по указанной схеме. Обычно используется в связке
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116 с объектами для чтения такими как C<IMPL::DOM::XMLReader>.
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117
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118 =head1 MEMBERS
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119
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120 =head2 C< CTOR($classDocument,$schema, %opts) >
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121
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122 Создает новый объект, принимает на вход класс документа (или фабрику, например
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123 L<IMPL::Object::Factory>) и схему. В процессе процедуры построения документа
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124 будет создан объект документа.
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125
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126 Необязательные именованные параметры
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127
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128 =over
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129
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130 =item C<ignoreUndefined>
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131
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132 C<NavigateCreate> не будет вызывать исключение, если запрашиваемый узел не
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133 найден в схеме, но будет возвращать C<undef>.
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134
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135 =back
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136
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137 =head2 C< NavigateCreate($nodeName,%props) >
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138
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139 Создает новый узел с указанным именем и переходит в него. В случае если в схеме
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140 подходящий узел не найден, то вызывается исключение или будет возвращено
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141 C<undef> см. C<ignoreUndefined>.
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142
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143 При этом по имени узла ищется его схема, после чего определяется класс для
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144 создания экземпляра узла и созданный узел доавляется в документ. При создании
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145 нового узла используется метод документа C<< IMPL::DOM::Document->Create >>
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146
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147 Свойства узла передаются при создании через параметр C<%props>, но имя
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148 создаваемого узла НЕ может быть переопределено свойством C<nodeName>, оно будет
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149 проигнорировано.
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150
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151 Свойства узла будут преобразованы при помощи заданных в схеме заполнителей
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152 C<inflator>.
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153
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154 =head2 C<[get]document >
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155
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156 Свойство, которое содержит документ по окончании процедуры построения.
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157
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158 =head2 C<[get]buildErrors>
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159
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160 Ошибки, возникшие в процессе построения документа.
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161
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162 =head2 C<[get]ignoreUndefined>
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163
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164 Опция, заданная при создании построителя, отвечающая за обработку узлов
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165 не найденных в схеме.
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166
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167 =cut