Mercurial > pub > Impl
annotate Lib/IMPL/DOM/Navigator/Builder.pm @ 273:ad93c9f4dd93
+Added support for destructors, (special method named DTOR)
| author | sergey |
|---|---|
| date | Tue, 29 Jan 2013 17:19:10 +0400 |
| parents | 129e48bb5afb |
| children | 4ddb27ff4a0b |
| rev | line source |
|---|---|
| 49 | 1 package IMPL::DOM::Navigator::Builder; |
| 2 use strict; | |
| 3 use warnings; | |
| 4 | |
| 236 | 5 use IMPL::Const qw(:prop); |
| 6 | |
| 165 | 7 use parent qw(IMPL::DOM::Navigator); |
| 49 | 8 use IMPL::Class::Property; |
| 9 use IMPL::Class::Property::Direct; | |
| 10 require IMPL::DOM::Navigator::SchemaNavigator; | |
|
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11 require IMPL::DOM::Schema::ValidationError; |
| 106 | 12 use IMPL::DOM::Document; |
| 49 | 13 |
| 14 BEGIN { | |
| 236 | 15 private _direct property _schemaNavi => PROP_RW; |
| 16 private _direct property _docClass => PROP_RW; | |
| 17 public _direct property BuildErrors => PROP_RO | PROP_LIST; | |
| 18 public _direct property Document => PROP_RO; | |
| 19 public _direct property ignoreUndefined => PROP_RO; | |
| 49 | 20 } |
| 21 | |
| 106 | 22 our %CTOR = ( |
| 112 | 23 'IMPL::DOM::Navigator' => sub { IMPL::DOM::Document->Empty; } |
| 106 | 24 ); |
| 25 | |
| 49 | 26 sub CTOR { |
| 236 | 27 my ($this,$docClass,$schema,%opts) = @_; |
| 49 | 28 |
| 29 $this->{$_docClass} = $docClass; | |
| 30 $this->{$_schemaNavi} = $schema ? IMPL::DOM::Navigator::SchemaNavigator->new($schema) : undef; | |
| 236 | 31 |
| 32 $this->{$ignoreUndefined} = $opts{ignoreUndefined} if $opts{ignoreUndefined}; | |
| 49 | 33 } |
| 34 | |
| 35 sub NavigateCreate { | |
| 36 my ($this,$nodeName,%props) = @_; | |
| 37 | |
| 38 if (my $schemaNode = $this->{$_schemaNavi}->NavigateName($nodeName)) { | |
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39 my $class = $schemaNode->can('nativeType') ? $schemaNode->nativeType || 'IMPL::DOM::Node' : 'IMPL::DOM::Node'; |
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40 |
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41 my $schemaSource = $this->{$_schemaNavi}->SourceSchemaNode; |
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42 |
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43 my @errors = $this->inflateProperties($schemaNode,\%props); |
| 250 | 44 |
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45 $props{schema} = $schemaNode; |
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46 $props{schemaSource} = $schemaSource; |
| 49 | 47 |
| 48 my $node; | |
| 49 if (! $this->{$Document}) { | |
| 50 $node = $this->{$Document} = $this->{$_docClass}->new(nodeName => $nodeName,%props); | |
| 106 | 51 $this->_initNavigator($node); |
| 49 | 52 } else { |
| 250 | 53 die new IMPL::InvalidOperationException('Can\'t create a second top level element') unless $this->Current; |
| 49 | 54 $node = $this->{$Document}->Create($nodeName,$class,\%props); |
| 106 | 55 $this->Current->appendChild($node); |
| 56 $this->internalNavigateNodeSet($node); | |
| 49 | 57 } |
| 58 | |
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59 if (@errors) { |
| 194 | 60 $this->BuildErrors->Append( |
| 61 map { | |
| 62 IMPL::DOM::Schema::ValidationError->new( | |
| 236 | 63 node => $node, |
| 64 source => $schemaSource, | |
| 65 schema => $schemaNode, | |
| 66 message => $schemaNode->messageInflateError, | |
| 67 error => $_ | |
| 194 | 68 ) |
| 69 } @errors | |
| 70 ); | |
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71 } |
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72 |
| 49 | 73 return $node; |
| 74 } else { | |
| 236 | 75 die new IMPL::InvalidOperationException("The specified node is undefined", $nodeName) |
| 238 | 76 if !$this->ignoreUndefined; |
| 236 | 77 return; |
| 49 | 78 } |
| 79 } | |
| 80 | |
| 103 | 81 sub inflateProperties { |
| 194 | 82 my ($this,$schemaNode,$refProps) = @_; |
| 83 my @errors; | |
| 84 foreach my $schemaProp ( $schemaNode->selectNodes('Property') ) { | |
| 85 next if not exists $refProps->{$schemaProp->name}; | |
| 86 my $result = eval {$schemaProp->inflateValue($refProps->{$schemaProp->name}) }; | |
| 87 if (my $e = $@) { | |
| 88 push @errors, $e; | |
| 89 } else { | |
| 90 $refProps->{$schemaProp->name} = $result; | |
| 91 } | |
| 92 } | |
| 93 return @errors; | |
| 103 | 94 } |
| 95 | |
| 96 sub inflateValue { | |
| 250 | 97 my ($this,$value,$node,$strict) = @_; |
| 194 | 98 |
| 250 | 99 $strict ||= 0; |
| 194 | 100 $node ||= $this->Current; |
| 101 | |
| 102 my $nodeSchema = $this->{$_schemaNavi}->Current; | |
| 103 | |
| 104 my $result = eval { $nodeSchema->inflateValue($value) }; | |
| 105 if (my $e=$@) { | |
| 106 $this->BuildErrors->Append(new IMPL::DOM::Schema::ValidationError( | |
| 246 | 107 schema => $nodeSchema, |
| 108 node => $node, | |
| 109 error => $e, | |
| 110 message => $nodeSchema->messageInflateError, | |
| 111 source => $this->{$_schemaNavi}->SourceSchemaNode | |
| 194 | 112 )); |
| 250 | 113 return $strict ? undef : $value ; |
| 194 | 114 } else { |
| 115 return $result; | |
| 116 } | |
| 103 | 117 } |
| 118 | |
| 49 | 119 sub Back { |
| 120 my ($this) = @_; | |
| 121 | |
| 122 $this->{$_schemaNavi}->SchemaBack(); | |
| 106 | 123 $this->SUPER::Back(); |
| 49 | 124 } |
| 125 | |
| 112 | 126 sub saveState { |
| 194 | 127 my ($this) = @_; |
| 128 | |
| 129 $this->{$_schemaNavi}->saveState; | |
| 130 $this->SUPER::saveState; | |
| 112 | 131 } |
| 132 | |
| 133 sub restoreState { | |
| 194 | 134 my ($this) = @_; |
| 135 | |
| 136 $this->{$_schemaNavi}->restoreState; | |
| 137 $this->SUPER::restoreState; | |
| 112 | 138 } |
| 139 | |
| 236 | 140 #compatibility |
| 141 sub buildErrors { | |
| 142 goto &BuildErrors; | |
| 143 } | |
| 144 | |
| 250 | 145 sub document { |
| 146 goto &Document; | |
| 147 } | |
| 148 | |
| 49 | 149 1; |
| 150 | |
| 151 __END__ | |
| 64 | 152 |
| 49 | 153 =pod |
| 154 | |
| 64 | 155 =head1 NAME |
| 156 | |
| 180 | 157 C< IMPL::DOM::Navigator::Builder > - Навигатор, строящий документ по указанной схеме. |
| 64 | 158 |
| 49 | 159 =head1 SYNOPSIS |
| 160 | |
| 64 | 161 =begin code |
| 162 | |
| 49 | 163 my $builder = new IMPL::DOM::Navigator::Builder(new MyApp::Document,$schema); |
| 164 my $reader = new IMPL::DOM::XMLReader(Navigator => $builder); | |
| 165 | |
| 166 $reader->ParseFile("document.xml"); | |
| 167 | |
| 168 my @errors = $schema->Validate($builder->Document); | |
| 169 | |
| 64 | 170 =end code |
| 171 | |
| 49 | 172 =head1 DESCRIPTION |
| 173 | |
| 180 | 174 Построитель DOM документов по указанной схеме. Обычно используется в связке |
| 175 с объектами для чтения такими как C<IMPL::DOM::XMLReader>. | |
| 49 | 176 |
| 250 | 177 =head1 MEMBERS |
| 49 | 178 |
| 250 | 179 =head2 C< CTOR($classDocument,$schema, %opts) > |
| 49 | 180 |
| 180 | 181 Создает новый объект, принимает на вход класс документа (или фабрику, например |
| 182 L<IMPL::Object::Factory>) и схему. В процессе процедуры построения документа | |
| 183 будет создан объект документа. | |
| 49 | 184 |
| 250 | 185 Необязательные именованные параметры |
| 186 | |
| 187 =over | |
| 188 | |
| 189 =item C<ignoreUndefined> | |
| 190 | |
| 191 C<NavigateCreate> не будет вызывать исключение, если запрашиваемый узел не | |
| 192 найден в схеме, но будет возвращать C<undef>. | |
| 193 | |
| 194 =back | |
| 195 | |
| 196 =head2 C< NavigateCreate($nodeName,%props) > | |
| 49 | 197 |
| 180 | 198 Создает новый узел с указанным именем и переходит в него. В случае если в схеме |
| 250 | 199 подходящий узел не найден, то вызывается исключение или будет возвращено |
| 200 C<undef> см. C<ignoreUndefined>. | |
| 49 | 201 |
| 180 | 202 При этом по имени узла ищется его схема, после чего определяется класс для |
| 250 | 203 создания экземпляра узла и созданный узел доавляется в документ. При создании |
| 180 | 204 нового узла используется метод документа C<< IMPL::DOM::Document->Create >> |
| 49 | 205 |
| 250 | 206 Свойства узла передаются при создании через параметр C<%props>, но имя |
| 207 создаваемого узла НЕ может быть переопределено свойством C<nodeName>, оно будет | |
| 208 проигнорировано. | |
| 64 | 209 |
| 250 | 210 Свойства узла будут преобразованы при помощи заданных в схеме заполнителей |
| 211 C<inflator>. | |
| 212 | |
| 213 =head2 C<[get]document > | |
| 64 | 214 |
| 180 | 215 Свойство, которое содержит документ по окончании процедуры построения. |
| 49 | 216 |
| 250 | 217 =head2 C<[get]buildErrors> |
| 218 | |
| 219 Ошибки, возникшие в процессе построения документа. | |
| 220 | |
| 221 =head2 C<[get]ignoreUndefined> | |
| 222 | |
| 223 Опция, заданная при создании построителя, отвечающая за обработку узлов | |
| 224 не найденных в схеме. | |
| 49 | 225 |
| 226 =cut |