| Total Complexity | 56 |
| Total Lines | 280 |
| Duplicated Lines | 0 % |
| Changes | 1 | ||
| Bugs | 0 | Features | 0 |
Complex classes like ModelElementTypeImpl often do a lot of different things. To break such a class down, we need to identify a cohesive component within that class. A common approach to find such a component is to look for fields/methods that share the same prefixes, or suffixes.
Once you have determined the fields that belong together, you can apply the Extract Class refactoring. If the component makes sense as a sub-class, Extract Subclass is also a candidate, and is often faster.
While breaking up the class, it is a good idea to analyze how other classes use ModelElementTypeImpl, and based on these observations, apply Extract Interface, too.
| 1 | <?php |
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| 28 | class ModelElementTypeImpl implements ModelElementTypeInterface |
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| 29 | { |
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| 30 | private $model; |
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| 31 | private $typeName; |
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| 32 | private $instanceType; |
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| 33 | private $typeNamespace; |
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| 34 | private $baseType; |
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| 35 | private $extendingTypes = []; |
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| 36 | private $attributes = []; |
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| 37 | private $childElementTypes = []; |
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| 38 | private $childElementCollections = []; |
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| 39 | private $instanceProvider; |
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| 40 | private $isAbstract; |
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| 41 | |||
| 42 | public function __construct(ModelImpl $model, string $name, string $instanceType) |
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| 43 | { |
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| 44 | $this->model = $model; |
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| 45 | $this->typeName = $name; |
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| 46 | $this->instanceType = $instanceType; |
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| 47 | } |
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| 48 | |||
| 49 | public function newInstance( |
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| 50 | ModelInstanceInterface $modelInstance, |
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| 51 | ?DomElementInterface $domElement = null |
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| 52 | ): ModelElementInstanceInterface { |
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| 53 | if ($domElement !== null) { |
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| 54 | $modelTypeInstanceContext = new ModelTypeInstanceContext($domElement, $modelInstance, $this); |
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| 55 | return $this->createModelElementInstance($modelTypeInstanceContext); |
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| 56 | } else { |
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| 57 | $document = $modelInstance->getDocument(); |
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| 58 | $domElement = $document->createElement($this->typeNamespace, $this->typeName); |
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| 59 | return $this->newInstance($modelInstance, $domElement); |
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| 60 | } |
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| 61 | } |
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| 62 | |||
| 63 | public function registerAttribute(AttributeInterface $attribute): void |
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| 64 | { |
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| 65 | if (!in_array($attribute, $this->attributes)) { |
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| 66 | $this->attributes[] = $attribute; |
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| 67 | } |
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| 68 | } |
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| 69 | |||
| 70 | public function registerChildElementType(ModelElementTypeInterface $childElementType): void |
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| 71 | { |
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| 72 | if (!in_array($childElementType, $this->childElementTypes)) { |
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| 73 | $this->childElementTypes[] = $childElementType; |
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| 74 | } |
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| 75 | } |
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| 76 | |||
| 77 | public function registerChildElementCollection(ChildElementCollectionInterface $childElementCollection): void |
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| 78 | { |
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| 79 | if (!in_array($childElementCollection, $this->childElementCollections)) { |
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| 80 | $this->childElementCollections[] = $childElementCollection; |
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| 81 | } |
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| 82 | } |
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| 83 | |||
| 84 | public function registerExtendingType(ModelElementTypeInterface $modelType): void |
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| 85 | { |
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| 86 | if (!in_array($modelType, $this->extendingTypes)) { |
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| 87 | $this->extendingTypes[] = $modelType; |
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| 88 | } |
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| 89 | } |
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| 90 | |||
| 91 | protected function createModelElementInstance( |
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| 92 | ModelTypeInstanceContext $instanceContext |
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| 93 | ): ModelElementInstanceInterface { |
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| 94 | if ($this->isAbstract) { |
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| 95 | throw new ModelTypeException( |
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| 96 | sprintf( |
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| 97 | "Model element type %s is abstract and no instances can be created.", |
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| 98 | $this->getTypeName() |
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| 99 | ) |
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| 100 | ); |
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| 101 | } else { |
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| 102 | return $this->instanceProvider->newInstance($instanceContext); |
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| 103 | } |
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| 104 | } |
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| 105 | |||
| 106 | public function getAttributes(): array |
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| 107 | { |
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| 108 | return $this->attributes; |
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| 109 | } |
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| 110 | |||
| 111 | public function getTypeName(): string |
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| 112 | { |
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| 113 | return $this->typeName; |
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| 114 | } |
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| 115 | |||
| 116 | public function getInstanceType(): string |
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| 117 | { |
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| 118 | return $this->instanceType; |
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| 119 | } |
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| 120 | |||
| 121 | public function setTypeNamespace(?string $typeNamespace): void |
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| 122 | { |
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| 123 | $this->typeNamespace = $typeNamespace; |
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| 124 | } |
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| 125 | |||
| 126 | public function getTypeNamespace(): ?string |
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| 127 | { |
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| 128 | return $this->typeNamespace; |
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| 129 | } |
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| 130 | |||
| 131 | public function setBaseType(ModelElementTypeImpl $baseType): void |
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| 132 | { |
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| 133 | if ($this->baseType === null) { |
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| 134 | $this->baseType = $baseType; |
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| 135 | } elseif ($this->baseType != $baseType) { |
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| 136 | throw new ModelException( |
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| 137 | sprintf( |
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| 138 | "Type can not have multiple base types. %s already extends type %s and can not also extend type %s", |
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| 139 | get_class($this), |
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| 140 | get_class($this->baseType), |
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| 141 | get_class($this) |
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| 142 | ) |
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| 143 | ); |
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| 144 | } |
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| 145 | } |
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| 146 | |||
| 147 | public function setInstanceProvider(ModelTypeInstanceProviderInterface $instanceProvider): void |
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| 148 | { |
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| 149 | $this->instanceProvider = $instanceProvider; |
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| 150 | } |
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| 151 | |||
| 152 | public function isAbstract(): bool |
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| 155 | } |
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| 156 | |||
| 157 | public function setAbstract(bool $isAbstract): void |
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| 158 | { |
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| 159 | $this->isAbstract = $isAbstract; |
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| 160 | } |
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| 161 | |||
| 162 | public function getExtendingTypes(): array |
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| 163 | { |
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| 164 | return $this->extendingTypes; |
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| 165 | } |
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| 166 | |||
| 167 | public function getAllExtendingTypes(): array |
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| 168 | { |
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| 169 | $extendingTypes = []; |
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| 170 | $extendingTypes[] = $this; |
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| 171 | $this->resolveExtendingTypes($extendingTypes); |
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| 172 | return $extendingTypes; |
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| 173 | } |
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| 174 | |||
| 175 | public function resolveExtendingTypes(array &$allExtendingTypes): void |
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| 176 | { |
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| 177 | foreach ($this->extendingTypes as $modelElementTypeImpl) { |
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| 178 | if (!in_array($modelElementTypeImpl, $allExtendingTypes)) { |
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| 179 | $allExtendingTypes[] = $modelElementTypeImpl; |
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| 180 | $modelElementTypeImpl->resolveExtendingTypes($allExtendingTypes); |
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| 181 | } |
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| 182 | } |
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| 183 | } |
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| 184 | |||
| 185 | public function resolveBaseTypes(array &$baseTypes): void |
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| 186 | { |
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| 187 | if ($this->baseType !== null) { |
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| 188 | $baseTypes[] = $this->baseType; |
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| 189 | $this->baseType->resolveBaseTypes($baseTypes); |
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| 190 | } |
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| 191 | } |
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| 192 | |||
| 193 | public function getBaseType(): ?ModelElementTypeInterface |
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| 194 | { |
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| 195 | return $this->baseType; |
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| 196 | } |
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| 197 | |||
| 198 | public function getModel(): ModelInterface |
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| 199 | { |
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| 200 | return $this->model; |
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| 201 | } |
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| 202 | |||
| 203 | public function getChildElementTypes(): array |
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| 204 | { |
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| 205 | return $this->childElementTypes; |
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| 206 | } |
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| 207 | |||
| 208 | public function getAllChildElementTypes(): array |
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| 209 | { |
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| 210 | $allChildElementTypes = []; |
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| 211 | if ($this->baseType !== null) { |
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| 212 | $allChildElementTypes = array_merge($allChildElementTypes, $this->baseType->getAllChildElementTypes()); |
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| 213 | } |
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| 214 | $allChildElementTypes = array_merge($allChildElementTypes, $this->childElementTypes); |
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| 215 | return $allChildElementTypes; |
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| 216 | } |
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| 217 | |||
| 218 | public function getChildElementCollections(): array |
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| 219 | { |
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| 220 | return $this->childElementCollections; |
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| 221 | } |
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| 222 | |||
| 223 | public function getAllChildElementCollections(): array |
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| 224 | { |
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| 225 | $allChildElementCollections = []; |
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| 226 | if ($this->baseType !== null) { |
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| 227 | $allChildElementCollections = array_merge( |
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| 228 | $allChildElementCollections, |
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| 229 | $this->baseType->getAllChildElementCollections() |
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| 230 | ); |
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| 231 | } |
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| 232 | $allChildElementCollections = array_merge($allChildElementCollections, $this->childElementCollections); |
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| 233 | return $allChildElementCollections; |
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| 234 | } |
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| 235 | |||
| 236 | public function getInstances(ModelInstanceInterface $modelInstanceImpl): array |
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| 247 | } |
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| 248 | |||
| 249 | protected function getElementsByNameNs(DomDocumentInterface $document, string $namespaceURI): array |
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| 250 | { |
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| 251 | $elements = $document->getElementsByNameNs($namespaceURI, $this->typeName); |
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| 252 | |||
| 253 | if (empty($elements)) { |
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| 254 | $alternativeNamespaces = $this->getModel()->getAlternativeNamespaces($namespaceURI); |
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| 255 | |||
| 256 | if (!empty($alternativeNamespaces)) { |
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| 257 | foreach ($alternativeNamespaces as $namespace) { |
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| 258 | $elements = $this->getElementsByNameNs($document, $namespace); |
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| 259 | if (!empty($elements)) { |
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| 260 | break; |
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| 261 | } |
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| 262 | } |
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| 263 | } |
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| 264 | } |
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| 265 | |||
| 266 | return $elements; |
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| 267 | } |
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| 268 | |||
| 269 | public function isBaseTypeOf(ModelElementTypeInterface $elementType): bool |
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| 276 | } |
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| 277 | } |
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| 278 | |||
| 279 | public function getAllAttributes(): array |
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| 280 | { |
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| 281 | $allAttributes = array_merge([], $this->getAttributes()); |
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| 282 | $baseTypes = ModelUtil::calculateAllBaseTypes($this); |
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| 283 | foreach ($baseTypes as $baseType) { |
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| 284 | $allAttributes = array_merge($allAttributes, $baseType->getAttributes()); |
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| 285 | } |
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| 286 | return $allAttributes; |
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| 287 | } |
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| 288 | |||
| 289 | public function getAttribute(string $attributeName): ?AttributeInterface |
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| 297 | } |
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| 298 | |||
| 299 | public function getChildElementCollection( |
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| 300 | ModelElementTypeInterface $childElementType |
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| 301 | ): ChildElementCollectionInterface { |
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| 302 | foreach ($this->getChildElementCollections() as $childElementCollection) { |
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| 303 | if ($childElementType == $childElementCollection->getChildElementType($this->model)) { |
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| 304 | return $childElementCollection; |
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| 305 | } |
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| 308 | } |
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| 309 | } |
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| 310 |