annotate Lib/IMPL/DOM/Navigator/Builder.pm @ 360:39842eedd923

language detection from request
author sergey
date Tue, 26 Nov 2013 03:22:44 +0400
parents 4ddb27ff4a0b
children 010ceafd0c5a
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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 BuildErrors => PROP_RO | PROP_LIST;
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17 public _direct property Document => PROP_RO;
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18 public _direct property ignoreUndefined => PROP_RO;
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19 }
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20
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21 our %CTOR = (
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22 'IMPL::DOM::Navigator' => sub { IMPL::DOM::Document->Empty; }
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23 );
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24
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25 sub CTOR {
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26 my ($this,$docClass,$schema,%opts) = @_;
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27
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28 $this->{$_docClass} = $docClass;
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29 $this->{$_schemaNavi} = $schema ? IMPL::DOM::Navigator::SchemaNavigator->new($schema) : undef;
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30
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31 $this->{$ignoreUndefined} = $opts{ignoreUndefined} if $opts{ignoreUndefined};
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32 }
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33
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34 sub NavigateCreate {
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35 my ($this,$nodeName,%props) = @_;
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36
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37 if (my $schemaNode = $this->{$_schemaNavi}->NavigateName($nodeName)) {
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38 my $class = $schemaNode->can('nativeType') ? $schemaNode->nativeType || 'IMPL::DOM::Node' : 'IMPL::DOM::Node';
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39
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40 my $schemaSource = $this->{$_schemaNavi}->SourceSchemaNode;
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41
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42 my @errors = $this->inflateProperties($schemaNode,\%props);
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43
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44 $props{schema} = $schemaNode;
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45 $props{schemaSource} = $schemaSource;
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46
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47 my $node;
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48 if (! $this->{$Document}) {
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49 $node = $this->{$Document} = $this->{$_docClass}->new(nodeName => $nodeName,%props);
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50 $this->_initNavigator($node);
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51 } else {
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52 die new IMPL::InvalidOperationException('Can\'t create a second top level element') unless $this->Current;
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53 $node = $this->{$Document}->Create($nodeName,$class,\%props);
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54 $this->Current->appendChild($node);
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55 $this->internalNavigateNodeSet($node);
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56 }
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57
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58 if (@errors) {
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59 $this->BuildErrors->Append(
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60 map {
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61 IMPL::DOM::Schema::ValidationError->new(
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62 node => $node,
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63 source => $schemaSource,
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64 schema => $schemaNode,
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65 message => $schemaNode->messageInflateError,
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66 error => $_
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67 )
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68 } @errors
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69 );
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70 }
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71
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72 return $node;
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73 } else {
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74 die new IMPL::InvalidOperationException("The specified node is undefined", $nodeName)
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75 if !$this->ignoreUndefined;
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76 return;
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77 }
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78 }
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79
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80 sub inflateProperties {
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81 my ($this,$schemaNode,$refProps) = @_;
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82 my @errors;
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83 foreach my $schemaProp ( $schemaNode->selectNodes('Property') ) {
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84 next if not exists $refProps->{$schemaProp->name};
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85 my $result = eval {$schemaProp->inflateValue($refProps->{$schemaProp->name}) };
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86 if (my $e = $@) {
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87 push @errors, $e;
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88 } else {
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89 $refProps->{$schemaProp->name} = $result;
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90 }
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91 }
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92 return @errors;
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93 }
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94
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95 sub inflateValue {
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96 my ($this,$value,$node,$strict) = @_;
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97
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98 $strict ||= 0;
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99 $node ||= $this->Current;
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100
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101 my $nodeSchema = $this->{$_schemaNavi}->Current;
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102
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103 my $result = eval { $nodeSchema->inflateValue($value) };
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104 if (my $e=$@) {
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105 $this->BuildErrors->Append(new IMPL::DOM::Schema::ValidationError(
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106 schema => $nodeSchema,
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107 node => $node,
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108 error => $e,
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109 message => $nodeSchema->messageInflateError,
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110 source => $this->{$_schemaNavi}->SourceSchemaNode
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111 ));
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112 return $strict ? undef : $value ;
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113 } else {
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114 return $result;
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115 }
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116 }
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117
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118 sub Back {
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119 my ($this) = @_;
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120
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121 $this->{$_schemaNavi}->SchemaBack();
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122 $this->SUPER::Back();
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123 }
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124
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125 sub saveState {
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126 my ($this) = @_;
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127
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128 $this->{$_schemaNavi}->saveState;
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129 $this->SUPER::saveState;
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130 }
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131
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132 sub restoreState {
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133 my ($this) = @_;
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134
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135 $this->{$_schemaNavi}->restoreState;
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136 $this->SUPER::restoreState;
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137 }
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138
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139 #compatibility
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140 sub buildErrors {
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141 goto &BuildErrors;
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142 }
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143
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144 sub document {
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145 goto &Document;
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146 }
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147
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148 1;
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149
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150 __END__
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151
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152 =pod
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153
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154 =head1 NAME
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155
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156 C< IMPL::DOM::Navigator::Builder > - Навигатор, строящий документ по указанной схеме.
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157
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158 =head1 SYNOPSIS
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159
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160 =begin code
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161
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162 my $builder = new IMPL::DOM::Navigator::Builder(new MyApp::Document,$schema);
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163 my $reader = new IMPL::DOM::XMLReader(Navigator => $builder);
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164
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165 $reader->ParseFile("document.xml");
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166
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167 my @errors = $schema->Validate($builder->Document);
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168
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169 =end code
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170
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171 =head1 DESCRIPTION
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172
180
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173 Построитель DOM документов по указанной схеме. Обычно используется в связке
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174 с объектами для чтения такими как C<IMPL::DOM::XMLReader>.
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175
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176 =head1 MEMBERS
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177
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178 =head2 C< CTOR($classDocument,$schema, %opts) >
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179
180
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180 Создает новый объект, принимает на вход класс документа (или фабрику, например
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181 L<IMPL::Object::Factory>) и схему. В процессе процедуры построения документа
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182 будет создан объект документа.
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183
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184 Необязательные именованные параметры
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185
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186 =over
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187
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188 =item C<ignoreUndefined>
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189
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190 C<NavigateCreate> не будет вызывать исключение, если запрашиваемый узел не
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191 найден в схеме, но будет возвращать C<undef>.
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192
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193 =back
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194
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195 =head2 C< NavigateCreate($nodeName,%props) >
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196
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197 Создает новый узел с указанным именем и переходит в него. В случае если в схеме
250
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198 подходящий узел не найден, то вызывается исключение или будет возвращено
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199 C<undef> см. C<ignoreUndefined>.
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200
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201 При этом по имени узла ищется его схема, после чего определяется класс для
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202 создания экземпляра узла и созданный узел доавляется в документ. При создании
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203 нового узла используется метод документа C<< IMPL::DOM::Document->Create >>
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204
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205 Свойства узла передаются при создании через параметр C<%props>, но имя
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206 создаваемого узла НЕ может быть переопределено свойством C<nodeName>, оно будет
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207 проигнорировано.
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208
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209 Свойства узла будут преобразованы при помощи заданных в схеме заполнителей
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210 C<inflator>.
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211
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212 =head2 C<[get]document >
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213
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214 Свойство, которое содержит документ по окончании процедуры построения.
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215
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216 =head2 C<[get]buildErrors>
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217
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218 Ошибки, возникшие в процессе построения документа.
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219
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220 =head2 C<[get]ignoreUndefined>
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221
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222 Опция, заданная при создании построителя, отвечающая за обработку узлов
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223 не найденных в схеме.
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224
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225 =cut