| Total Complexity | 41 |
| Total Lines | 138 |
| Duplicated Lines | 0 % |
| Changes | 0 | ||
Complex classes like DoctrineExtractor 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 DoctrineExtractor, and based on these observations, apply Extract Interface, too.
| 1 | <?php |
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| 35 | final class DoctrineExtractor implements PropertyListExtractorInterface, PropertyTypeExtractorInterface, PropertyAccessExtractorInterface |
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| 36 | { |
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| 37 | private $objectManager; |
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| 38 | |||
| 39 | public function __construct(ObjectManager $objectManager) |
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| 40 | { |
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| 41 | $this->objectManager = $objectManager; |
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| 42 | } |
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| 43 | |||
| 44 | /** |
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| 45 | * {@inheritdoc} |
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| 46 | */ |
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| 47 | public function getProperties($class, array $context = []) |
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| 48 | { |
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| 49 | if (null === $metadata = $this->getMetadata($class)) { |
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| 50 | return null; |
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| 51 | } |
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| 52 | |||
| 53 | return $metadata->getFieldNames(); |
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| 54 | } |
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| 55 | |||
| 56 | /** |
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| 57 | * {@inheritdoc} |
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| 58 | */ |
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| 59 | public function getTypes($class, $property, array $context = []) |
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| 60 | { |
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| 61 | if (null === $metadata = $this->getMetadata($class)) { |
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| 62 | return null; |
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| 63 | } |
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| 64 | |||
| 65 | if ($metadata->hasAssociation($property)) { |
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| 66 | $class = $metadata->getAssociationTargetClass($property); |
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| 67 | |||
| 68 | if ($metadata->isSingleValuedAssociation($property)) { |
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| 69 | $nullable = $metadata instanceof MongoDbClassMetadata && $metadata->isNullable($property); |
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| 70 | |||
| 71 | return [new Type(Type::BUILTIN_TYPE_OBJECT, $nullable, $class)]; |
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| 72 | } |
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| 73 | |||
| 74 | $collectionKeyType = Type::BUILTIN_TYPE_INT; |
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| 75 | |||
| 76 | return [ |
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| 77 | new Type( |
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| 78 | Type::BUILTIN_TYPE_OBJECT, |
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| 79 | false, |
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| 80 | Collection::class, |
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| 81 | true, |
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| 82 | new Type($collectionKeyType), |
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| 83 | new Type(Type::BUILTIN_TYPE_OBJECT, false, $class) |
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| 84 | ), |
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| 85 | ]; |
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| 86 | } |
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| 87 | |||
| 88 | if ($metadata->hasField($property)) { |
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| 89 | $typeOfField = $metadata->getTypeOfField($property); |
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| 90 | $nullable = $metadata instanceof MongoDbClassMetadata && $metadata->isNullable($property); |
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| 91 | |||
| 92 | switch ($typeOfField) { |
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| 93 | case MongoDbType::DATE: |
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| 94 | return [new Type(Type::BUILTIN_TYPE_OBJECT, $nullable, 'DateTime')]; |
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| 95 | case MongoDbType::HASH: |
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| 96 | return [new Type(Type::BUILTIN_TYPE_ARRAY, $nullable, null, true)]; |
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| 97 | case MongoDbType::COLLECTION: |
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| 98 | return [new Type(Type::BUILTIN_TYPE_ARRAY, $nullable, null, true, new Type(Type::BUILTIN_TYPE_INT))]; |
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| 99 | default: |
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| 100 | $builtinType = $this->getPhpType($typeOfField); |
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| 101 | |||
| 102 | return $builtinType ? [new Type($builtinType, $nullable)] : null; |
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| 103 | } |
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| 104 | } |
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| 105 | |||
| 106 | return null; |
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| 107 | } |
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| 108 | |||
| 109 | /** |
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| 110 | * {@inheritdoc} |
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| 111 | */ |
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| 112 | public function isReadable($class, $property, array $context = []): ?bool |
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| 113 | { |
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| 114 | return null; |
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| 115 | } |
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| 116 | |||
| 117 | /** |
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| 118 | * {@inheritdoc} |
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| 119 | */ |
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| 120 | public function isWritable($class, $property, array $context = []): ?bool |
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| 121 | { |
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| 122 | if ( |
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| 123 | null === ($metadata = $this->getMetadata($class)) |
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| 124 | || $metadata instanceof MongoDbClassMetadata && MongoDbClassMetadata::GENERATOR_TYPE_NONE === $metadata->generatorType |
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| 125 | || !\in_array($property, $metadata->getIdentifierFieldNames(), true) |
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| 126 | ) { |
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| 127 | return null; |
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| 128 | } |
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| 129 | |||
| 130 | return false; |
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| 131 | } |
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| 132 | |||
| 133 | private function getMetadata(string $class): ?ClassMetadata |
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| 134 | { |
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| 135 | try { |
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| 136 | return $this->objectManager->getClassMetadata($class); |
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| 137 | } catch (MappingException $exception) { |
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| 138 | return null; |
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| 139 | } |
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| 140 | } |
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| 141 | |||
| 142 | /** |
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| 143 | * Gets the corresponding built-in PHP type. |
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| 144 | */ |
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| 145 | private function getPhpType(string $doctrineType): ?string |
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| 173 | } |
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| 174 | } |
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| 175 |