Mercurial > pub > Impl
annotate Lib/IMPL/DOM/Node.pm @ 227:70ad6bc20908
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| author | sergey |
|---|---|
| date | Fri, 07 Sep 2012 16:32:17 +0400 |
| parents | a8db61d0ed33 |
| children | 6253872024a4 |
| 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 IMPL::Class::Property::Direct; | |
| 10 use Scalar::Util qw(weaken); | |
| 11 | |
| 12 use IMPL::Exception; | |
| 13 | |
| 14 BEGIN { | |
| 15 public _direct property nodeName => prop_get; | |
| 16 public _direct property document => prop_get; | |
| 17 public _direct property isComplex => { get => \&_getIsComplex } ; | |
| 18 public _direct property nodeValue => prop_all; | |
| 102 | 19 public _direct property childNodes => { get => \&_getChildNodes }; # prop_list |
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20 public _direct property parentNode => prop_get | owner_set; |
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21 public _direct property schema => prop_get | owner_set; |
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22 public _direct property schemaSource => prop_get | owner_set; |
| 49 | 23 private _direct property _propertyMap => prop_all ; |
| 116 | 24 |
| 49 | 25 } |
| 26 | |
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27 our %Axes = ( |
| 194 | 28 parent => \&selectParent, |
| 29 siblings => \&selectSiblings, | |
| 30 child => \&childNodes, | |
| 31 document => \&selectDocument, | |
| 32 ancestor => \&selectAncestors, | |
| 33 descendant => \&selectDescendant | |
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34 ); |
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35 |
| 49 | 36 sub CTOR { |
| 37 my ($this,%args) = @_; | |
| 38 | |
| 39 $this->{$nodeName} = delete $args{nodeName} or die new IMPL::InvalidArgumentException("A name is required"); | |
| 40 $this->{$nodeValue} = delete $args{nodeValue} if exists $args{nodeValue}; | |
| 41 if ( exists $args{document} ) { | |
| 42 $this->{$document} = delete $args{document}; | |
| 43 weaken($this->{$document}); | |
| 44 } | |
| 45 | |
| 124 | 46 while ( my ($key,$value) = each %args ) { |
| 194 | 47 $this->nodeProperty($key,$value); |
| 124 | 48 } |
| 49 | 49 } |
| 50 | |
| 51 sub insertNode { | |
| 52 my ($this,$node,$pos) = @_; | |
| 53 | |
| 54 die new IMPL::InvalidOperationException("You can't insert the node to itselft") if $this == $node; | |
| 55 | |
| 56 $node->{$parentNode}->removeNode($node) if ($node->{$parentNode}); | |
| 57 | |
| 58 $this->childNodes->InsertAt($pos,$node); | |
| 59 | |
| 60 $node->_setParent( $this ); | |
| 61 | |
| 62 return $node; | |
| 63 } | |
| 64 | |
| 65 sub appendChild { | |
| 66 my ($this,$node) = @_; | |
| 67 | |
| 68 die new IMPL::InvalidOperationException("You can't insert the node to itselft") if $this == $node; | |
| 69 | |
| 70 $node->{$parentNode}->removeNode($node) if ($node->{$parentNode}); | |
| 71 | |
| 72 my $children = $this->childNodes; | |
| 73 $children->Append($node); | |
| 74 | |
| 75 $node->_setParent( $this ); | |
| 76 | |
| 77 return $node; | |
| 78 } | |
| 79 | |
| 80 sub appendNode { | |
| 81 goto &appendChild; | |
| 82 } | |
| 83 | |
| 84 sub appendRange { | |
| 85 my ($this,@range) = @_; | |
| 86 | |
| 87 die new IMPL::InvalidOperationException("You can't insert the node to itselft") if grep $_ == $this, @range; | |
| 88 | |
| 89 foreach my $node (@range) { | |
| 90 $node->{$parentNode}->removeNode($node) if ($node->{$parentNode}); | |
| 91 $node->_setParent( $this ); | |
| 92 } | |
| 93 | |
| 94 $this->childNodes->Append(@range); | |
| 95 | |
| 96 return $this; | |
| 97 } | |
| 98 | |
| 99 sub _getChildNodes { | |
| 100 my ($this) = @_; | |
| 101 | |
| 102 $this->{$childNodes} = new IMPL::Object::List() unless $this->{$childNodes}; | |
| 102 | 103 return wantarray ? @{ $this->{$childNodes} } : $this->{$childNodes}; |
| 49 | 104 } |
| 105 | |
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106 sub childNodesRef { |
| 194 | 107 my ($this) = @_; |
| 108 return scalar $this->_getChildNodes; | |
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109 } |
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110 |
| 49 | 111 sub removeNode { |
| 112 my ($this,$node) = @_; | |
| 113 | |
| 114 if ($this == $node->{$parentNode}) { | |
| 115 $this->childNodes->RemoveItem($node); | |
| 116 $node->_setParent(undef); | |
| 117 return $node; | |
| 118 } else { | |
| 119 die new IMPL::InvalidOperationException("The specified node isn't belong to this node"); | |
| 120 } | |
| 121 } | |
| 122 | |
| 123 sub replaceNodeAt { | |
| 124 my ($this,$index,$node) = @_; | |
| 125 | |
| 126 my $nodeOld = $this->childNodes->[$index]; | |
| 127 | |
| 128 die new IMPL::InvalidOperationException("You can't insert the node to itselft") if $this == $node; | |
| 129 | |
| 130 # unlink node from previous parent | |
| 131 $node->{$parentNode}->removeNode($node) if ($node->{$parentNode}); | |
| 132 | |
| 133 # replace (or set) old node | |
| 134 $this->childNodes->[$index] = $node; | |
| 135 | |
| 136 # set new parent | |
| 137 $node->_setParent( $this ); | |
| 138 | |
| 139 # unlink old node if we have one | |
| 140 $nodeOld->_setParent(undef) if $nodeOld; | |
| 141 | |
| 142 # return old node | |
| 143 return $nodeOld; | |
| 144 } | |
| 145 | |
| 146 sub removeAt { | |
| 147 my ($this,$pos) = @_; | |
| 148 | |
| 149 if ( my $node = $this->childNodes->RemoveAt($pos) ) { | |
| 150 $node->_setParent(undef); | |
| 151 return $node; | |
| 152 } else { | |
| 153 return undef; | |
| 154 } | |
| 155 } | |
| 156 | |
| 157 sub removeLast { | |
| 158 my ($this) = @_; | |
| 159 | |
| 160 if ( my $node = $this->{$childNodes} ? $this->{$childNodes}->RemoveLast() : undef) { | |
| 161 $node->_setParent(undef); | |
| 162 return $node; | |
| 163 } else { | |
| 164 return undef; | |
| 165 } | |
| 166 } | |
| 167 | |
| 168 sub removeSelected { | |
| 169 my ($this,$query) = @_; | |
| 170 | |
| 171 my @newSet; | |
| 172 my @result; | |
| 173 | |
| 174 if (ref $query eq 'CODE') { | |
| 175 &$query($_) ? push @result, $_ : push @newSet, $_ foreach @{$this->childNodes}; | |
| 176 } elsif (defined $query) { | |
| 177 $_->nodeName eq $query ? push @result, $_ : push @newSet, $_ foreach @{$this->childNodes}; | |
| 178 } else { | |
| 179 my $children = $this->childNodes; | |
| 180 $_->_setParent(undef) foreach @$children; | |
| 181 delete $this->{$childNodes}; | |
| 182 return wantarray ? @$children : $children; | |
| 183 } | |
| 184 | |
| 185 $_->_setParent(undef) foreach @result; | |
| 186 | |
| 187 $this->{$childNodes} = @newSet ? bless \@newSet ,'IMPL::Object::List' : undef; | |
| 188 | |
| 189 return wantarray ? @result : \@result; | |
| 190 } | |
| 191 | |
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192 sub resolveAxis { |
| 194 | 193 my ($this,$axis) = @_; |
| 194 return $Axes{$axis}->($this) | |
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195 } |
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196 |
| 49 | 197 sub selectNodes { |
| 194 | 198 my $this = shift; |
| 199 my $path; | |
| 200 | |
| 201 if (@_ == 1) { | |
| 202 $path = $this->translatePath($_[0]); | |
| 203 } else { | |
| 204 $path = [@_]; | |
| 205 } | |
| 206 | |
| 207 my @set = ($this); | |
| 208 | |
| 209 while (@$path) { | |
| 210 my $query = shift @$path; | |
| 211 @set = map $_->selectNodesAxis($query), @set; | |
| 212 } | |
| 213 | |
| 214 return wantarray ? @set : \@set; | |
| 108 | 215 } |
| 216 | |
| 113 | 217 sub selectSingleNode { |
| 194 | 218 my $this = shift; |
| 219 my @result = $this->selectNodes(@_); | |
| 220 return $result[0]; | |
| 113 | 221 } |
| 222 | |
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223 sub selectNodesRef { |
| 194 | 224 my $this = shift; |
| 225 | |
| 226 my @result = $this->selectNodes(@_); | |
| 227 return \@result; | |
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228 } |
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229 |
| 108 | 230 sub translatePath { |
| 194 | 231 my ($this,$path) = @_; |
| 232 | |
| 233 # TODO: Move path compilation here from IMPL::DOM::Schema::Validator::Compare | |
| 234 return [$path]; | |
| 108 | 235 } |
| 236 | |
| 237 sub selectNodesAxis { | |
| 194 | 238 my ($this,$query,$axis) = @_; |
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239 |
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240 $axis ||= 'child'; |
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241 |
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242 die new IMPL::InvalidOperationException('Unknown axis',$axis) unless exists $Axes{$axis}; |
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243 |
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244 my $nodes = $this->resolveAxis($axis); |
| 49 | 245 |
| 246 my @result; | |
| 247 | |
| 248 if (ref $query eq 'CODE') { | |
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249 @result = grep &$query($_), @{$nodes}; |
| 49 | 250 } elsif (ref $query eq 'ARRAY' ) { |
| 251 my %keys = map (($_,1),@$query); | |
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252 @result = grep $keys{$_->nodeName}, @{$nodes}; |
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253 } elsif (ref $query eq 'HASH') { |
| 194 | 254 while( my ($axis,$filter) = each %$query ) { |
| 255 push @result, $this->selectNodesAxis($filter,$axis); | |
| 256 } | |
| 49 | 257 } elsif (defined $query) { |
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258 @result = grep $_->nodeName eq $query, @{$nodes}; |
| 49 | 259 } else { |
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260 return wantarray ? @{$nodes} : $nodes; |
| 49 | 261 } |
| 262 | |
| 263 return wantarray ? @result : \@result; | |
| 264 } | |
| 265 | |
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266 sub selectParent { |
| 194 | 267 my ($this) = @_; |
| 268 | |
| 269 if ($this->parentNode) { | |
| 270 return wantarray ? $this->parentNode : [$this->parentNode]; | |
| 271 } else { | |
| 272 return wantarray ? () : []; | |
| 273 } | |
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274 } |
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275 |
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276 sub selectSiblings { |
| 194 | 277 my ($this) = @_; |
| 278 | |
| 279 if ($this->parentNode) { | |
| 280 return $this->parentNode->selectNodes( sub { $_ != $this } ); | |
| 281 } else { | |
| 282 return wantarray ? () : []; | |
| 283 } | |
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284 } |
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285 |
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286 sub selectDocument { |
| 194 | 287 my ($this) = @_; |
| 288 | |
| 289 if ($this->document) { | |
| 290 return wantarray ? $this->document : [$this->document]; | |
| 291 } else { | |
| 292 return wantarray ? () : []; | |
| 293 } | |
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294 } |
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295 |
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296 sub selectDescendant { |
| 194 | 297 wantarray ? |
| 298 map $_->selectAll(), $_[0]->childNodes : | |
| 299 [map $_->selectAll(), $_[0]->childNodes] | |
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300 } |
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301 |
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302 sub selectAll { |
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303 map(selectAll($_),@{$_[0]->childNodes}) , $_[0] |
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304 } |
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305 |
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306 sub selectAncestors { |
| 194 | 307 my $parent = $_[0]->parentNode; |
| 308 | |
| 309 wantarray ? | |
| 310 ($parent ? ($parent->selectAncestors,$parent) : ()) : | |
| 311 [$parent ? ($parent->selectAncestors,$parent) : ()] | |
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312 } |
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313 |
| 49 | 314 sub firstChild { |
| 315 @_ >=2 ? $_[0]->replaceNodeAt(0,$_[1]) : $_[0]->childNodes->[0]; | |
| 316 } | |
| 317 | |
| 318 sub _getIsComplex { | |
| 152 | 319 ($_[0]->{$childNodes} and $_[0]->{$childNodes}->Count) ? 1 : 0; |
| 49 | 320 } |
| 321 | |
| 322 sub _updateDocRefs { | |
| 323 my ($this) = @_; | |
| 324 | |
| 325 # this method is called by the parent node on his children, so we need no to check parent | |
| 326 $this->{$document} = $this->{$parentNode}->document; | |
| 327 | |
| 328 # prevent cyclic | |
| 329 weaken($this->{$document}) if $this->{$document}; | |
| 330 | |
| 173 | 331 map $_->_updateDocRefs, @{$this->{$childNodes}} if $this->{$childNodes}; |
| 49 | 332 } |
| 333 | |
| 334 sub _setParent { | |
| 335 my ($this,$node) = @_; | |
| 336 | |
| 337 | |
| 338 if (($node || 0) != ($this->{$parentNode} || 0)) { | |
| 339 my $newOwner; | |
| 340 if ($node) { | |
| 341 $this->{$parentNode} = $node; | |
| 342 $newOwner = $node->document || 0; | |
| 343 | |
| 344 # prevent from creating cyclicreferences | |
| 345 weaken($this->{$parentNode}); | |
| 346 | |
| 347 } else { | |
| 348 delete $this->{$parentNode}; | |
| 75 | 349 |
| 350 #keep document | |
| 351 $newOwner = $this->{$document}; | |
| 49 | 352 } |
| 353 | |
| 354 if (($this->{$document}||0) != $newOwner) { | |
| 355 $this->{$document} = $newOwner; | |
| 356 weaken($this->{$document}) if $newOwner; | |
| 357 $_->_updateDocRefs foreach @{$this->childNodes}; | |
| 358 } | |
| 359 } | |
| 360 } | |
| 361 | |
| 362 sub text { | |
| 363 my ($this) = @_; | |
| 364 | |
| 365 join ('', $this->nodeValue || '', map ($_->text || '', @{$this->childNodes})); | |
| 366 } | |
| 367 | |
| 368 sub nodeProperty { | |
| 369 my $this = shift; | |
| 370 my $name = shift; | |
| 371 | |
| 188 | 372 return unless defined $name; |
| 373 | |
| 122 | 374 if (my $method = $this->can($name)) { |
| 194 | 375 unshift @_,$this; |
| 376 # use goto to preserve calling context | |
| 377 goto &$method; | |
| 122 | 378 } |
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379 # dynamic property |
| 49 | 380 if (@_) { |
| 194 | 381 # set |
| 382 return $this->{$_propertyMap}{$name} = shift; | |
| 383 } else { | |
| 384 return $this->{$_propertyMap}{$name}; | |
| 49 | 385 } |
| 386 } | |
| 387 | |
| 122 | 388 sub listProperties { |
| 194 | 389 my ($this) = @_; |
| 390 | |
| 391 my %props = map {$_->Name, 1} $this->get_meta(typeof IMPL::Class::PropertyInfo, sub { $_->Attributes->{domProperty}},1); | |
| 392 | |
| 393 return (keys %props,keys %{$this->{$_propertyMap}}); | |
| 122 | 394 } |
| 395 | |
| 152 | 396 sub save { |
| 194 | 397 my ($this,$writer) = @_; |
| 398 | |
| 399 if ( not ( $this->isComplex or defined $this->{$nodeValue} ) ) { | |
| 400 $writer->emptyTag( | |
| 401 $this->{$nodeName}, | |
| 402 map { | |
| 403 $_, | |
| 404 $this->nodeProperty($_) | |
| 405 } grep defined $this->nodeProperty($_), $this->listProperties | |
| 406 ); | |
| 407 } else { | |
| 408 $writer->startTag( | |
| 409 $this->{$nodeName}, | |
| 410 map { | |
| 411 $_, | |
| 412 $this->nodeProperty($_) | |
| 413 } grep defined $this->nodeProperty($_), $this->listProperties | |
| 414 ); | |
| 415 $writer->characters($this->{$nodeValue}) if $this->{$nodeValue}; | |
| 416 | |
| 417 $_->save($writer) foreach $this->childNodes; | |
| 418 | |
| 419 $writer->endTag($this->{$nodeName}); | |
| 420 } | |
| 152 | 421 } |
| 422 | |
| 49 | 423 sub qname { |
| 424 $_[0]->{$nodeName}; | |
| 425 } | |
| 426 | |
| 427 sub path { | |
| 428 my ($this) = @_; | |
| 429 | |
| 430 if ($this->parentNode) { | |
| 431 return $this->parentNode->path.'.'.$this->qname; | |
| 432 } else { | |
| 433 return $this->qname; | |
| 434 } | |
| 435 } | |
| 436 | |
| 437 1; | |
| 75 | 438 |
| 439 __END__ | |
| 440 | |
| 441 =pod | |
| 442 | |
| 443 =head1 NAME | |
| 444 | |
| 180 | 445 C<IMPL::DOM::Node> Элемент DOM модели |
| 75 | 446 |
| 447 =head1 DESCRIPTION | |
| 448 | |
| 180 | 449 Базовый узел DOM модели. От него можно наследовать другие элементы DOM модели. |
| 75 | 450 |
| 451 =head1 MEMBERS | |
| 452 | |
| 453 =head2 PROPERTIES | |
| 454 | |
| 455 =over | |
| 456 | |
| 457 =item C<[get] nodeName> | |
| 458 | |
| 180 | 459 Имя узла. Задается при создании. |
| 75 | 460 |
| 461 =item C<[get] document> | |
| 462 | |
| 180 | 463 Документ к которому принадлежит узел. Задается при поздании узла. |
| 75 | 464 |
| 465 =item C<[get] isComplex> | |
| 466 | |
| 180 | 467 Определяет является ли узел сложным (тоесть есть ли дети). |
| 75 | 468 |
| 180 | 469 C<true> - есть, C<false> - нет. |
| 75 | 470 |
| 471 =item C<[get,set] nodeValue> | |
| 472 | |
| 180 | 473 Значение узла, обычно простой скаляр, но ничто не мешает туда |
| 474 устанавливать любое значение. | |
| 75 | 475 |
| 476 =item C<[get,list] childNodes> | |
| 477 | |
| 180 | 478 Список детей, является списокм C<IMPL::Object::List>. |
| 75 | 479 |
| 480 =item C<[get] parentNode> | |
| 481 | |
| 180 | 482 Ссылка на родительский элемент, если таковой имеется. |
| 75 | 483 |
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484 =item C<[get] schema> |
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485 |
| 180 | 486 Ссылка на узел из C<IMPL::DOM::Schema>, представляющий схему данных текущего узла. Может быть C<undef>. |
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487 |
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488 =item C<[get] schema> |
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489 |
| 180 | 490 Ссылка на узел из C<IMPL::DOM::Schema>, представляющий элемент схемы, объявляющий данный узел. Может быть C<undef>. |
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491 |
| 180 | 492 Отличается от свойства C<schema> тем, что узел в случае ссылки на тип узла, данной свойство будет содержать |
| 493 описание ссылки C<IMPL::DOM::Schema::Node>, а свойство C<schema> например будет ссылаться на | |
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494 C<IMPL::DOM::Schema::ComplexType>. |
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495 |
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496 =back |
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497 |
| 75 | 498 =head2 METHODS |
| 499 | |
| 180 | 500 =cut |