Complex classes like AnnotationDriver 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. You can also have a look at the cohesion graph to spot any un-connected, or weakly-connected components.
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 AnnotationDriver, and based on these observations, apply Extract Interface, too.
| 1 | <?php |
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| 28 | class AnnotationDriver extends AbstractAnnotationDriver |
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| 29 | { |
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| 30 | protected $entityAnnotationClasses = [ |
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| 31 | ODM\Document::class => 1, |
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| 32 | ODM\MappedSuperclass::class => 2, |
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| 33 | ODM\EmbeddedDocument::class => 3, |
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| 34 | ODM\QueryResultDocument::class => 4, |
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| 35 | ]; |
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| 36 | |||
| 37 | /** |
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| 38 | * {@inheritdoc} |
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| 39 | */ |
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| 40 | 1365 | public function loadMetadataForClass($className, \Doctrine\Common\Persistence\Mapping\ClassMetadata $class) |
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| 41 | { |
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| 42 | /** @var ClassMetadata $class */ |
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| 43 | 1365 | $reflClass = $class->getReflectionClass(); |
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| 44 | |||
| 45 | 1365 | $classAnnotations = $this->reader->getClassAnnotations($reflClass); |
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| 46 | |||
| 47 | 1365 | $documentAnnots = []; |
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| 48 | 1365 | foreach ($classAnnotations as $annot) { |
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| 49 | 1363 | $classAnnotations[get_class($annot)] = $annot; |
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| 50 | |||
| 51 | 1363 | foreach ($this->entityAnnotationClasses as $annotClass => $i) { |
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| 52 | 1363 | if ($annot instanceof $annotClass) { |
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| 53 | 1363 | $documentAnnots[$i] = $annot; |
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| 54 | 1363 | continue 2; |
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| 55 | } |
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| 56 | } |
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| 57 | |||
| 58 | // non-document class annotations |
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| 59 | 909 | if ($annot instanceof ODM\AbstractIndex) { |
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| 60 | 6 | $this->addIndex($class, $annot); |
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| 61 | } |
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| 62 | 909 | if ($annot instanceof ODM\Indexes) { |
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| 63 | 61 | foreach (is_array($annot->value) ? $annot->value : [$annot->value] as $index) { |
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| 64 | 61 | $this->addIndex($class, $index); |
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| 65 | } |
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| 66 | 894 | } elseif ($annot instanceof ODM\InheritanceType) { |
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| 67 | 833 | $class->setInheritanceType(constant(ClassMetadata::class . '::INHERITANCE_TYPE_' . $annot->value)); |
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| 68 | 892 | } elseif ($annot instanceof ODM\DiscriminatorField) { |
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| 69 | 111 | $class->setDiscriminatorField($annot->value); |
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| 70 | 891 | } elseif ($annot instanceof ODM\DiscriminatorMap) { |
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| 71 | 111 | $class->setDiscriminatorMap($annot->value); |
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| 72 | 830 | } elseif ($annot instanceof ODM\DiscriminatorValue) { |
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| 73 | $class->setDiscriminatorValue($annot->value); |
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| 74 | 830 | } elseif ($annot instanceof ODM\ChangeTrackingPolicy) { |
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| 75 | 46 | $class->setChangeTrackingPolicy(constant(ClassMetadata::class . '::CHANGETRACKING_' . $annot->value)); |
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| 76 | 828 | } elseif ($annot instanceof ODM\DefaultDiscriminatorValue) { |
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| 77 | 48 | $class->setDefaultDiscriminatorValue($annot->value); |
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| 78 | 823 | } elseif ($annot instanceof ODM\ReadPreference) { |
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| 79 | 909 | $class->setReadPreference($annot->value, $annot->tags); |
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| 80 | } |
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| 81 | } |
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| 82 | |||
| 83 | 1365 | if (! $documentAnnots) { |
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| 84 | 3 | throw MappingException::classIsNotAValidDocument($className); |
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| 85 | } |
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| 86 | |||
| 87 | // find the winning document annotation |
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| 88 | 1363 | ksort($documentAnnots); |
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| 89 | 1363 | $documentAnnot = reset($documentAnnots); |
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| 90 | |||
| 91 | 1363 | if ($documentAnnot instanceof ODM\MappedSuperclass) { |
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| 92 | 822 | $class->isMappedSuperclass = true; |
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| 93 | 1362 | } elseif ($documentAnnot instanceof ODM\EmbeddedDocument) { |
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| 94 | 234 | $class->isEmbeddedDocument = true; |
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| 95 | 1355 | } elseif ($documentAnnot instanceof ODM\QueryResultDocument) { |
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| 96 | 47 | $class->isQueryResultDocument = true; |
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| 97 | } |
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| 98 | 1363 | if (isset($documentAnnot->db)) { |
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| 99 | 1 | $class->setDatabase($documentAnnot->db); |
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| 100 | } |
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| 101 | 1363 | if (isset($documentAnnot->collection)) { |
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| 102 | 868 | $class->setCollection($documentAnnot->collection); |
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| 103 | } |
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| 104 | 1363 | if (isset($documentAnnot->repositoryClass)) { |
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| 105 | 57 | $class->setCustomRepositoryClass($documentAnnot->repositoryClass); |
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| 106 | } |
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| 107 | 1363 | if (isset($documentAnnot->writeConcern)) { |
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| 108 | 10 | $class->setWriteConcern($documentAnnot->writeConcern); |
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| 109 | } |
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| 110 | 1363 | if (isset($documentAnnot->indexes)) { |
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| 111 | 1362 | foreach ($documentAnnot->indexes as $index) { |
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| 112 | $this->addIndex($class, $index); |
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| 113 | } |
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| 114 | } |
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| 115 | 1363 | if (! empty($documentAnnot->readOnly)) { |
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| 116 | 5 | $class->markReadOnly(); |
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| 117 | } |
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| 118 | |||
| 119 | 1363 | foreach ($reflClass->getProperties() as $property) { |
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| 120 | 1362 | if (($class->isMappedSuperclass && ! $property->isPrivate()) |
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| 121 | || |
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| 122 | 1362 | ($class->isInheritedField($property->name) && $property->getDeclaringClass()->name !== $class->name)) { |
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| 123 | 864 | continue; |
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| 124 | } |
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| 125 | |||
| 126 | 1361 | $indexes = []; |
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| 127 | 1361 | $mapping = ['fieldName' => $property->getName()]; |
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| 128 | 1361 | $fieldAnnot = null; |
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| 129 | |||
| 130 | 1361 | foreach ($this->reader->getPropertyAnnotations($property) as $annot) { |
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| 131 | 1361 | if ($annot instanceof ODM\AbstractField) { |
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| 132 | 1361 | $fieldAnnot = $annot; |
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| 133 | 1361 | if ($annot->isDeprecated()) { |
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| 134 | @trigger_error($annot->getDeprecationMessage(), E_USER_DEPRECATED); |
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| 135 | } |
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| 136 | } |
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| 137 | 1361 | if ($annot instanceof ODM\AbstractIndex) { |
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| 138 | 159 | $indexes[] = $annot; |
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| 139 | } |
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| 140 | 1361 | if ($annot instanceof ODM\Indexes) { |
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| 141 | foreach (is_array($annot->value) ? $annot->value : [$annot->value] as $index) { |
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| 142 | $indexes[] = $index; |
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| 143 | } |
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| 144 | 1361 | } elseif ($annot instanceof ODM\AlsoLoad) { |
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| 145 | 15 | $mapping['alsoLoadFields'] = (array) $annot->value; |
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| 146 | 1361 | } elseif ($annot instanceof ODM\Version) { |
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| 147 | 67 | $mapping['version'] = true; |
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| 148 | 1361 | } elseif ($annot instanceof ODM\Lock) { |
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| 149 | 1361 | $mapping['lock'] = true; |
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| 150 | } |
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| 151 | } |
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| 152 | |||
| 153 | 1361 | if ($fieldAnnot) { |
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| 154 | 1361 | $mapping = array_replace($mapping, (array) $fieldAnnot); |
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| 155 | 1361 | $class->mapField($mapping); |
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| 156 | } |
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| 157 | |||
| 158 | 1361 | if ($indexes) { |
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| 159 | 159 | foreach ($indexes as $index) { |
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| 160 | 159 | $name = $mapping['name'] ?? $mapping['fieldName']; |
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| 161 | 159 | $keys = [$name => $index->order ?: 'asc']; |
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| 162 | 1361 | $this->addIndex($class, $index, $keys); |
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| 163 | } |
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| 164 | } |
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| 165 | } |
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| 166 | |||
| 167 | // Set shard key after all fields to ensure we mapped all its keys |
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| 168 | 1361 | if (isset($classAnnotations['Doctrine\ODM\MongoDB\Mapping\Annotations\ShardKey'])) { |
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| 169 | 59 | $this->setShardKey($class, $classAnnotations['Doctrine\ODM\MongoDB\Mapping\Annotations\ShardKey']); |
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| 170 | } |
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| 171 | |||
| 172 | /** @var \ReflectionMethod $method */ |
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| 173 | 1360 | foreach ($reflClass->getMethods(\ReflectionMethod::IS_PUBLIC) as $method) { |
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| 174 | /* Filter for the declaring class only. Callbacks from parent |
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| 175 | * classes will already be registered. |
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| 176 | */ |
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| 177 | 1124 | if ($method->getDeclaringClass()->name !== $reflClass->name) { |
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| 178 | 830 | continue; |
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| 179 | } |
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| 180 | |||
| 181 | 1124 | foreach ($this->reader->getMethodAnnotations($method) as $annot) { |
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| 182 | 820 | if ($annot instanceof ODM\AlsoLoad) { |
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| 183 | 13 | $class->registerAlsoLoadMethod($method->getName(), $annot->value); |
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| 184 | } |
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| 185 | |||
| 186 | 820 | if (! isset($classAnnotations[ODM\HasLifecycleCallbacks::class])) { |
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| 187 | 64 | continue; |
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| 188 | } |
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| 189 | |||
| 190 | 801 | if ($annot instanceof ODM\PrePersist) { |
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| 191 | 786 | $class->addLifecycleCallback($method->getName(), Events::prePersist); |
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| 192 | 71 | } elseif ($annot instanceof ODM\PostPersist) { |
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| 193 | 10 | $class->addLifecycleCallback($method->getName(), Events::postPersist); |
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| 194 | 71 | } elseif ($annot instanceof ODM\PreUpdate) { |
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| 195 | 15 | $class->addLifecycleCallback($method->getName(), Events::preUpdate); |
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| 196 | 66 | } elseif ($annot instanceof ODM\PostUpdate) { |
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| 197 | 55 | $class->addLifecycleCallback($method->getName(), Events::postUpdate); |
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| 198 | 64 | } elseif ($annot instanceof ODM\PreRemove) { |
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| 199 | 62 | $class->addLifecycleCallback($method->getName(), Events::preRemove); |
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| 200 | 64 | } elseif ($annot instanceof ODM\PostRemove) { |
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| 201 | 62 | $class->addLifecycleCallback($method->getName(), Events::postRemove); |
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| 202 | 64 | } elseif ($annot instanceof ODM\PreLoad) { |
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| 203 | 63 | $class->addLifecycleCallback($method->getName(), Events::preLoad); |
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| 204 | 63 | } elseif ($annot instanceof ODM\PostLoad) { |
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| 205 | 62 | $class->addLifecycleCallback($method->getName(), Events::postLoad); |
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| 206 | 11 | } elseif ($annot instanceof ODM\PreFlush) { |
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| 207 | 1124 | $class->addLifecycleCallback($method->getName(), Events::preFlush); |
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| 208 | } |
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| 209 | } |
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| 210 | } |
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| 211 | 1360 | } |
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| 212 | |||
| 213 | 180 | private function addIndex(ClassMetadata $class, $index, array $keys = []) |
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| 214 | { |
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| 215 | 180 | $keys = array_merge($keys, $index->keys); |
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| 216 | 180 | $options = []; |
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| 217 | 180 | $allowed = ['name', 'dropDups', 'background', 'unique', 'sparse', 'expireAfterSeconds']; |
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| 218 | 180 | foreach ($allowed as $name) { |
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| 219 | 180 | if (isset($index->$name)) { |
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| 220 | 180 | $options[$name] = $index->$name; |
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| 221 | } |
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| 222 | } |
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| 223 | 180 | if (! empty($index->partialFilterExpression)) { |
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| 224 | 2 | $options['partialFilterExpression'] = $index->partialFilterExpression; |
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| 225 | } |
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| 226 | 180 | $options = array_merge($options, $index->options); |
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| 227 | 180 | $class->addIndex($keys, $options); |
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| 228 | 180 | } |
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| 229 | |||
| 230 | /** |
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| 231 | * |
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| 232 | * @throws MappingException |
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| 233 | */ |
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| 234 | 59 | private function setShardKey(ClassMetadata $class, ODM\ShardKey $shardKey) |
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| 235 | { |
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| 236 | 59 | $options = []; |
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| 237 | 59 | $allowed = ['unique', 'numInitialChunks']; |
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| 238 | 59 | foreach ($allowed as $name) { |
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| 239 | 59 | if (isset($shardKey->$name)) { |
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| 240 | 59 | $options[$name] = $shardKey->$name; |
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| 241 | } |
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| 242 | } |
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| 243 | |||
| 244 | 59 | $class->setShardKey($shardKey->keys, $options); |
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| 245 | 58 | } |
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| 246 | |||
| 247 | /** |
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| 248 | * Factory method for the Annotation Driver |
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| 249 | * |
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| 250 | * @param array|string $paths |
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| 251 | * @return AnnotationDriver |
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| 252 | */ |
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| 253 | 1618 | public static function create($paths = [], ?Reader $reader = null) |
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| 260 | } |
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| 261 |
If a method or function can return multiple different values and unless you are sure that you only can receive a single value in this context, we recommend to add an additional type check:
If this a common case that PHP Analyzer should handle natively, please let us know by opening an issue.