Mercurial > pub > Impl
annotate Lib/IMPL/DOM/Node.pm @ 279:af8af4b8337e
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| author | sergey |
|---|---|
| date | Mon, 04 Feb 2013 17:16:45 +0400 |
| parents | 4ddb27ff4a0b |
| children | c6d0f889ef87 |
| rev | line source |
|---|---|
| 49 | 1 package IMPL::DOM::Node; |
| 2 use strict; | |
| 3 use warnings; | |
| 4 | |
| 165 | 5 use parent qw(IMPL::Object); |
| 49 | 6 |
| 7 use IMPL::Object::List; | |
| 8 use IMPL::Class::Property; | |
| 9 use Scalar::Util qw(weaken); | |
| 10 | |
| 11 use IMPL::Exception; | |
| 12 | |
| 13 BEGIN { | |
| 14 public _direct property nodeName => prop_get; | |
| 15 public _direct property document => prop_get; | |
| 16 public _direct property isComplex => { get => \&_getIsComplex } ; | |
| 17 public _direct property nodeValue => prop_all; | |
| 102 | 18 public _direct property childNodes => { get => \&_getChildNodes }; # prop_list |
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19 public _direct property parentNode => prop_get | owner_set; |
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20 public _direct property schema => prop_get | owner_set; |
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21 public _direct property schemaSource => prop_get | owner_set; |
| 49 | 22 private _direct property _propertyMap => prop_all ; |
| 116 | 23 |
| 49 | 24 } |
| 25 | |
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26 our %Axes = ( |
| 194 | 27 parent => \&selectParent, |
| 28 siblings => \&selectSiblings, | |
| 29 child => \&childNodes, | |
| 30 document => \&selectDocument, | |
| 31 ancestor => \&selectAncestors, | |
| 32 descendant => \&selectDescendant | |
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33 ); |
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34 |
| 49 | 35 sub CTOR { |
| 36 my ($this,%args) = @_; | |
| 37 | |
| 38 $this->{$nodeName} = delete $args{nodeName} or die new IMPL::InvalidArgumentException("A name is required"); | |
| 39 $this->{$nodeValue} = delete $args{nodeValue} if exists $args{nodeValue}; | |
| 40 if ( exists $args{document} ) { | |
| 41 $this->{$document} = delete $args{document}; | |
| 42 weaken($this->{$document}); | |
| 43 } | |
| 44 | |
| 124 | 45 while ( my ($key,$value) = each %args ) { |
| 194 | 46 $this->nodeProperty($key,$value); |
| 124 | 47 } |
| 49 | 48 } |
| 49 | |
| 50 sub insertNode { | |
| 51 my ($this,$node,$pos) = @_; | |
| 52 | |
| 53 die new IMPL::InvalidOperationException("You can't insert the node to itselft") if $this == $node; | |
| 54 | |
| 55 $node->{$parentNode}->removeNode($node) if ($node->{$parentNode}); | |
| 56 | |
| 57 $this->childNodes->InsertAt($pos,$node); | |
| 58 | |
| 59 $node->_setParent( $this ); | |
| 60 | |
| 61 return $node; | |
| 62 } | |
| 63 | |
| 64 sub appendChild { | |
| 65 my ($this,$node) = @_; | |
| 66 | |
| 67 die new IMPL::InvalidOperationException("You can't insert the node to itselft") if $this == $node; | |
| 68 | |
| 69 $node->{$parentNode}->removeNode($node) if ($node->{$parentNode}); | |
| 70 | |
| 71 my $children = $this->childNodes; | |
| 72 $children->Append($node); | |
| 73 | |
| 74 $node->_setParent( $this ); | |
| 75 | |
| 76 return $node; | |
| 77 } | |
| 78 | |
| 79 sub appendNode { | |
| 80 goto &appendChild; | |
| 81 } | |
| 82 | |
| 83 sub appendRange { | |
| 84 my ($this,@range) = @_; | |
| 85 | |
| 86 die new IMPL::InvalidOperationException("You can't insert the node to itselft") if grep $_ == $this, @range; | |
| 87 | |
| 88 foreach my $node (@range) { | |
| 89 $node->{$parentNode}->removeNode($node) if ($node->{$parentNode}); | |
| 90 $node->_setParent( $this ); | |
| 91 } | |
| 92 | |
| 93 $this->childNodes->Append(@range); | |
| 94 | |
| 95 return $this; | |
| 96 } | |
| 97 | |
| 98 sub _getChildNodes { | |
| 99 my ($this) = @_; | |
| 100 | |
| 101 $this->{$childNodes} = new IMPL::Object::List() unless $this->{$childNodes}; | |
| 102 | 102 return wantarray ? @{ $this->{$childNodes} } : $this->{$childNodes}; |
| 49 | 103 } |
| 104 | |
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105 sub childNodesRef { |
| 194 | 106 my ($this) = @_; |
| 107 return scalar $this->_getChildNodes; | |
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108 } |
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109 |
| 49 | 110 sub removeNode { |
| 111 my ($this,$node) = @_; | |
| 112 | |
| 113 if ($this == $node->{$parentNode}) { | |
| 114 $this->childNodes->RemoveItem($node); | |
| 115 $node->_setParent(undef); | |
| 116 return $node; | |
| 117 } else { | |
| 118 die new IMPL::InvalidOperationException("The specified node isn't belong to this node"); | |
| 119 } | |
| 120 } | |
| 121 | |
| 122 sub replaceNodeAt { | |
| 123 my ($this,$index,$node) = @_; | |
| 124 | |
| 125 my $nodeOld = $this->childNodes->[$index]; | |
| 126 | |
| 127 die new IMPL::InvalidOperationException("You can't insert the node to itselft") if $this == $node; | |
| 128 | |
| 129 # unlink node from previous parent | |
| 130 $node->{$parentNode}->removeNode($node) if ($node->{$parentNode}); | |
| 131 | |
| 132 # replace (or set) old node | |
| 133 $this->childNodes->[$index] = $node; | |
| 134 | |
| 135 # set new parent | |
| 136 $node->_setParent( $this ); | |
| 137 | |
| 138 # unlink old node if we have one | |
| 139 $nodeOld->_setParent(undef) if $nodeOld; | |
| 140 | |
| 141 # return old node | |
| 142 return $nodeOld; | |
| 143 } | |
| 144 | |
| 145 sub removeAt { | |
| 146 my ($this,$pos) = @_; | |
| 147 | |
| 148 if ( my $node = $this->childNodes->RemoveAt($pos) ) { | |
| 149 $node->_setParent(undef); | |
| 150 return $node; | |
| 151 } else { | |
| 152 return undef; | |
| 153 } | |
| 154 } | |
| 155 | |
| 156 sub removeLast { | |
| 157 my ($this) = @_; | |
| 158 | |
| 159 if ( my $node = $this->{$childNodes} ? $this->{$childNodes}->RemoveLast() : undef) { | |
| 160 $node->_setParent(undef); | |
| 161 return $node; | |
| 162 } else { | |
| 163 return undef; | |
| 164 } | |
| 165 } | |
| 166 | |
| 167 sub removeSelected { | |
| 168 my ($this,$query) = @_; | |
| 169 | |
| 170 my @newSet; | |
| 171 my @result; | |
| 172 | |
| 173 if (ref $query eq 'CODE') { | |
| 174 &$query($_) ? push @result, $_ : push @newSet, $_ foreach @{$this->childNodes}; | |
| 175 } elsif (defined $query) { | |
| 176 $_->nodeName eq $query ? push @result, $_ : push @newSet, $_ foreach @{$this->childNodes}; | |
| 177 } else { | |
| 178 my $children = $this->childNodes; | |
| 179 $_->_setParent(undef) foreach @$children; | |
| 180 delete $this->{$childNodes}; | |
| 181 return wantarray ? @$children : $children; | |
| 182 } | |
| 183 | |
| 184 $_->_setParent(undef) foreach @result; | |
| 185 | |
| 186 $this->{$childNodes} = @newSet ? bless \@newSet ,'IMPL::Object::List' : undef; | |
| 187 | |
| 188 return wantarray ? @result : \@result; | |
| 189 } | |
| 190 | |
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191 sub resolveAxis { |
| 194 | 192 my ($this,$axis) = @_; |
| 193 return $Axes{$axis}->($this) | |
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194 } |
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195 |
| 49 | 196 sub selectNodes { |
| 194 | 197 my $this = shift; |
| 198 my $path; | |
| 199 | |
| 200 if (@_ == 1) { | |
| 201 $path = $this->translatePath($_[0]); | |
| 202 } else { | |
| 203 $path = [@_]; | |
| 204 } | |
| 205 | |
| 206 my @set = ($this); | |
| 207 | |
| 208 while (@$path) { | |
| 209 my $query = shift @$path; | |
| 210 @set = map $_->selectNodesAxis($query), @set; | |
| 211 } | |
| 212 | |
| 213 return wantarray ? @set : \@set; | |
| 108 | 214 } |
| 215 | |
| 113 | 216 sub selectSingleNode { |
| 194 | 217 my $this = shift; |
| 218 my @result = $this->selectNodes(@_); | |
| 219 return $result[0]; | |
| 113 | 220 } |
| 221 | |
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222 sub selectNodesRef { |
| 194 | 223 my $this = shift; |
| 224 | |
| 225 my @result = $this->selectNodes(@_); | |
| 226 return \@result; | |
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227 } |
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228 |
| 108 | 229 sub translatePath { |
| 194 | 230 my ($this,$path) = @_; |
| 231 | |
| 232 # TODO: Move path compilation here from IMPL::DOM::Schema::Validator::Compare | |
| 233 return [$path]; | |
| 108 | 234 } |
| 235 | |
| 236 sub selectNodesAxis { | |
| 194 | 237 my ($this,$query,$axis) = @_; |
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238 |
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239 $axis ||= 'child'; |
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240 |
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241 die new IMPL::InvalidOperationException('Unknown axis',$axis) unless exists $Axes{$axis}; |
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242 |
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243 my $nodes = $this->resolveAxis($axis); |
| 49 | 244 |
| 245 my @result; | |
| 246 | |
| 247 if (ref $query eq 'CODE') { | |
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248 @result = grep &$query($_), @{$nodes}; |
| 49 | 249 } elsif (ref $query eq 'ARRAY' ) { |
| 250 my %keys = map (($_,1),@$query); | |
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251 @result = grep $keys{$_->nodeName}, @{$nodes}; |
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252 } elsif (ref $query eq 'HASH') { |
| 194 | 253 while( my ($axis,$filter) = each %$query ) { |
| 254 push @result, $this->selectNodesAxis($filter,$axis); | |
| 255 } | |
| 49 | 256 } elsif (defined $query) { |
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257 @result = grep $_->nodeName eq $query, @{$nodes}; |
| 49 | 258 } else { |
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259 return wantarray ? @{$nodes} : $nodes; |
| 49 | 260 } |
| 261 | |
| 262 return wantarray ? @result : \@result; | |
| 263 } | |
| 264 | |
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265 sub selectParent { |
| 194 | 266 my ($this) = @_; |
| 267 | |
| 268 if ($this->parentNode) { | |
| 269 return wantarray ? $this->parentNode : [$this->parentNode]; | |
| 270 } else { | |
| 271 return wantarray ? () : []; | |
| 272 } | |
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273 } |
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274 |
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275 sub selectSiblings { |
| 194 | 276 my ($this) = @_; |
| 277 | |
| 278 if ($this->parentNode) { | |
| 279 return $this->parentNode->selectNodes( sub { $_ != $this } ); | |
| 280 } else { | |
| 281 return wantarray ? () : []; | |
| 282 } | |
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283 } |
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284 |
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285 sub selectDocument { |
| 194 | 286 my ($this) = @_; |
| 287 | |
| 288 if ($this->document) { | |
| 289 return wantarray ? $this->document : [$this->document]; | |
| 290 } else { | |
| 291 return wantarray ? () : []; | |
| 292 } | |
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293 } |
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294 |
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295 sub selectDescendant { |
| 194 | 296 wantarray ? |
| 297 map $_->selectAll(), $_[0]->childNodes : | |
| 298 [map $_->selectAll(), $_[0]->childNodes] | |
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299 } |
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300 |
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301 sub selectAll { |
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302 map(selectAll($_),@{$_[0]->childNodes}) , $_[0] |
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303 } |
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304 |
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305 sub selectAncestors { |
| 194 | 306 my $parent = $_[0]->parentNode; |
| 307 | |
| 308 wantarray ? | |
| 309 ($parent ? ($parent->selectAncestors,$parent) : ()) : | |
| 310 [$parent ? ($parent->selectAncestors,$parent) : ()] | |
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311 } |
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312 |
| 49 | 313 sub firstChild { |
| 314 @_ >=2 ? $_[0]->replaceNodeAt(0,$_[1]) : $_[0]->childNodes->[0]; | |
| 315 } | |
| 316 | |
| 317 sub _getIsComplex { | |
| 152 | 318 ($_[0]->{$childNodes} and $_[0]->{$childNodes}->Count) ? 1 : 0; |
| 49 | 319 } |
| 320 | |
| 321 sub _updateDocRefs { | |
| 322 my ($this) = @_; | |
| 323 | |
| 324 # this method is called by the parent node on his children, so we need no to check parent | |
| 325 $this->{$document} = $this->{$parentNode}->document; | |
| 326 | |
| 327 # prevent cyclic | |
| 328 weaken($this->{$document}) if $this->{$document}; | |
| 329 | |
| 173 | 330 map $_->_updateDocRefs, @{$this->{$childNodes}} if $this->{$childNodes}; |
| 49 | 331 } |
| 332 | |
| 333 sub _setParent { | |
| 334 my ($this,$node) = @_; | |
| 335 | |
| 336 | |
| 337 if (($node || 0) != ($this->{$parentNode} || 0)) { | |
| 338 my $newOwner; | |
| 339 if ($node) { | |
| 340 $this->{$parentNode} = $node; | |
| 341 $newOwner = $node->document || 0; | |
| 342 | |
| 343 # prevent from creating cyclicreferences | |
| 344 weaken($this->{$parentNode}); | |
| 345 | |
| 346 } else { | |
| 347 delete $this->{$parentNode}; | |
| 75 | 348 |
| 349 #keep document | |
| 350 $newOwner = $this->{$document}; | |
| 49 | 351 } |
| 352 | |
| 353 if (($this->{$document}||0) != $newOwner) { | |
| 354 $this->{$document} = $newOwner; | |
| 355 weaken($this->{$document}) if $newOwner; | |
| 356 $_->_updateDocRefs foreach @{$this->childNodes}; | |
| 357 } | |
| 358 } | |
| 359 } | |
| 360 | |
| 361 sub text { | |
| 362 my ($this) = @_; | |
| 363 | |
| 364 join ('', $this->nodeValue || '', map ($_->text || '', @{$this->childNodes})); | |
| 365 } | |
| 366 | |
| 367 sub nodeProperty { | |
| 368 my $this = shift; | |
| 369 my $name = shift; | |
| 370 | |
| 188 | 371 return unless defined $name; |
| 372 | |
| 122 | 373 if (my $method = $this->can($name)) { |
| 194 | 374 unshift @_,$this; |
| 375 # use goto to preserve calling context | |
| 376 goto &$method; | |
| 122 | 377 } |
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378 # dynamic property |
| 49 | 379 if (@_) { |
| 194 | 380 # set |
| 381 return $this->{$_propertyMap}{$name} = shift; | |
| 382 } else { | |
| 383 return $this->{$_propertyMap}{$name}; | |
| 49 | 384 } |
| 385 } | |
| 386 | |
| 122 | 387 sub listProperties { |
| 194 | 388 my ($this) = @_; |
| 389 | |
| 275 | 390 my %props = map {$_->name, 1} $this->GetMeta(typeof IMPL::Class::PropertyInfo, sub { $_->attributes->{domProperty}},1); |
| 194 | 391 |
| 392 return (keys %props,keys %{$this->{$_propertyMap}}); | |
| 122 | 393 } |
| 394 | |
| 152 | 395 sub save { |
| 194 | 396 my ($this,$writer) = @_; |
| 397 | |
| 398 if ( not ( $this->isComplex or defined $this->{$nodeValue} ) ) { | |
| 399 $writer->emptyTag( | |
| 400 $this->{$nodeName}, | |
| 401 map { | |
| 402 $_, | |
| 403 $this->nodeProperty($_) | |
| 404 } grep defined $this->nodeProperty($_), $this->listProperties | |
| 405 ); | |
| 406 } else { | |
| 407 $writer->startTag( | |
| 408 $this->{$nodeName}, | |
| 409 map { | |
| 410 $_, | |
| 411 $this->nodeProperty($_) | |
| 412 } grep defined $this->nodeProperty($_), $this->listProperties | |
| 413 ); | |
| 414 $writer->characters($this->{$nodeValue}) if $this->{$nodeValue}; | |
| 415 | |
| 416 $_->save($writer) foreach $this->childNodes; | |
| 417 | |
| 418 $writer->endTag($this->{$nodeName}); | |
| 419 } | |
| 152 | 420 } |
| 421 | |
| 49 | 422 sub qname { |
| 423 $_[0]->{$nodeName}; | |
| 424 } | |
| 425 | |
| 426 sub path { | |
| 427 my ($this) = @_; | |
| 428 | |
| 429 if ($this->parentNode) { | |
| 430 return $this->parentNode->path.'.'.$this->qname; | |
| 431 } else { | |
| 432 return $this->qname; | |
| 433 } | |
| 434 } | |
| 435 | |
| 436 1; | |
| 75 | 437 |
| 438 __END__ | |
| 439 | |
| 440 =pod | |
| 441 | |
| 442 =head1 NAME | |
| 443 | |
| 180 | 444 C<IMPL::DOM::Node> Элемент DOM модели |
| 75 | 445 |
| 446 =head1 DESCRIPTION | |
| 447 | |
| 180 | 448 Базовый узел DOM модели. От него можно наследовать другие элементы DOM модели. |
| 75 | 449 |
| 450 =head1 MEMBERS | |
| 451 | |
| 452 =head2 PROPERTIES | |
| 453 | |
| 454 =over | |
| 455 | |
| 456 =item C<[get] nodeName> | |
| 457 | |
| 180 | 458 Имя узла. Задается при создании. |
| 75 | 459 |
| 460 =item C<[get] document> | |
| 461 | |
| 180 | 462 Документ к которому принадлежит узел. Задается при поздании узла. |
| 75 | 463 |
| 464 =item C<[get] isComplex> | |
| 465 | |
| 180 | 466 Определяет является ли узел сложным (тоесть есть ли дети). |
| 75 | 467 |
| 180 | 468 C<true> - есть, C<false> - нет. |
| 75 | 469 |
| 470 =item C<[get,set] nodeValue> | |
| 471 | |
| 180 | 472 Значение узла, обычно простой скаляр, но ничто не мешает туда |
| 473 устанавливать любое значение. | |
| 75 | 474 |
| 475 =item C<[get,list] childNodes> | |
| 476 | |
| 180 | 477 Список детей, является списокм C<IMPL::Object::List>. |
| 75 | 478 |
| 479 =item C<[get] parentNode> | |
| 480 | |
| 180 | 481 Ссылка на родительский элемент, если таковой имеется. |
| 75 | 482 |
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483 =item C<[get] schema> |
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484 |
| 180 | 485 Ссылка на узел из C<IMPL::DOM::Schema>, представляющий схему данных текущего узла. Может быть C<undef>. |
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486 |
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487 =item C<[get] schema> |
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488 |
| 180 | 489 Ссылка на узел из C<IMPL::DOM::Schema>, представляющий элемент схемы, объявляющий данный узел. Может быть C<undef>. |
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490 |
| 180 | 491 Отличается от свойства C<schema> тем, что узел в случае ссылки на тип узла, данной свойство будет содержать |
| 492 описание ссылки C<IMPL::DOM::Schema::Node>, а свойство C<schema> например будет ссылаться на | |
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493 C<IMPL::DOM::Schema::ComplexType>. |
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494 |
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495 =back |
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496 |
| 75 | 497 =head2 METHODS |
| 498 | |
| 180 | 499 =cut |