doctrine /
mongodb-odm
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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| 38 | class AnnotationDriver extends AbstractAnnotationDriver |
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| 39 | { |
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| 40 | protected $entityAnnotationClasses = array( |
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| 41 | ODM\Document::class => 1, |
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| 42 | ODM\MappedSuperclass::class => 2, |
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| 43 | ODM\EmbeddedDocument::class => 3, |
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| 44 | ); |
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| 45 | |||
| 46 | /** |
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| 47 | * Registers annotation classes to the common registry. |
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| 48 | * |
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| 49 | * This method should be called when bootstrapping your application. |
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| 50 | */ |
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| 51 | public static function registerAnnotationClasses() |
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| 55 | |||
| 56 | /** |
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| 57 | * {@inheritdoc} |
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| 58 | */ |
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| 59 | 849 | public function loadMetadataForClass($className, ClassMetadata $class) |
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| 60 | { |
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| 61 | /** @var $class ClassMetadataInfo */ |
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| 62 | 849 | $reflClass = $class->getReflectionClass(); |
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| 63 | |||
| 64 | 849 | $classAnnotations = $this->reader->getClassAnnotations($reflClass); |
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| 65 | |||
| 66 | 849 | $documentAnnots = array(); |
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| 67 | 849 | foreach ($classAnnotations as $annot) { |
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| 68 | 847 | $classAnnotations[get_class($annot)] = $annot; |
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| 69 | |||
| 70 | 847 | foreach ($this->entityAnnotationClasses as $annotClass => $i) { |
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| 71 | 847 | if ($annot instanceof $annotClass) { |
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| 72 | 847 | $documentAnnots[$i] = $annot; |
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| 73 | 847 | continue 2; |
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| 74 | } |
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| 75 | } |
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| 76 | |||
| 77 | // non-document class annotations |
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| 78 | 392 | if ($annot instanceof ODM\AbstractIndex) { |
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| 79 | 13 | $this->addIndex($class, $annot); |
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| 80 | } |
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| 81 | 392 | if ($annot instanceof ODM\Indexes) { |
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| 82 | 72 | foreach (is_array($annot->value) ? $annot->value : array($annot->value) as $index) { |
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| 83 | 72 | $this->addIndex($class, $index); |
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| 84 | } |
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| 85 | } elseif ($annot instanceof ODM\InheritanceType) { |
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| 86 | 296 | $class->setInheritanceType(constant(MappingClassMetadata::class . '::INHERITANCE_TYPE_'.$annot->value)); |
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| 87 | } elseif ($annot instanceof ODM\DiscriminatorField) { |
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| 88 | // $fieldName property is deprecated, but fall back for BC |
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| 89 | 116 | if (isset($annot->value)) { |
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| 90 | 54 | $class->setDiscriminatorField($annot->value); |
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| 91 | } elseif (isset($annot->name)) { |
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| 92 | $class->setDiscriminatorField($annot->name); |
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| 93 | } elseif (isset($annot->fieldName)) { |
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| 94 | 116 | $class->setDiscriminatorField($annot->fieldName); |
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| 95 | } |
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| 96 | } elseif ($annot instanceof ODM\DiscriminatorMap) { |
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| 97 | 116 | $class->setDiscriminatorMap($annot->value); |
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| 98 | } elseif ($annot instanceof ODM\DiscriminatorValue) { |
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| 99 | $class->setDiscriminatorValue($annot->value); |
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| 100 | } elseif ($annot instanceof ODM\ChangeTrackingPolicy) { |
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| 101 | 57 | $class->setChangeTrackingPolicy(constant(MappingClassMetadata::class . '::CHANGETRACKING_'.$annot->value)); |
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| 102 | } elseif ($annot instanceof ODM\DefaultDiscriminatorValue) { |
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| 103 | 392 | $class->setDefaultDiscriminatorValue($annot->value); |
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| 104 | } |
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| 105 | |||
| 106 | } |
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| 107 | |||
| 108 | 849 | if ( ! $documentAnnots) { |
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| 109 | 3 | throw MappingException::classIsNotAValidDocument($className); |
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| 110 | } |
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| 111 | |||
| 112 | // find the winning document annotation |
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| 113 | 847 | ksort($documentAnnots); |
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| 114 | 847 | $documentAnnot = reset($documentAnnots); |
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| 115 | |||
| 116 | 847 | if ($documentAnnot instanceof ODM\MappedSuperclass) { |
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| 117 | 286 | $class->isMappedSuperclass = true; |
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| 118 | } elseif ($documentAnnot instanceof ODM\EmbeddedDocument) { |
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| 119 | 449 | $class->isEmbeddedDocument = true; |
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| 120 | } |
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| 121 | 847 | if (isset($documentAnnot->db)) { |
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| 122 | 1 | $class->setDatabase($documentAnnot->db); |
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| 123 | } |
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| 124 | 847 | if (isset($documentAnnot->collection)) { |
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| 125 | 337 | $class->setCollection($documentAnnot->collection); |
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| 126 | } |
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| 127 | 847 | if (isset($documentAnnot->repositoryClass) && !$class->isEmbeddedDocument) { |
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| 128 | 66 | $class->setCustomRepositoryClass($documentAnnot->repositoryClass); |
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| 129 | } |
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| 130 | 847 | if (isset($documentAnnot->indexes)) { |
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| 131 | 846 | foreach ($documentAnnot->indexes as $index) { |
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| 132 | $this->addIndex($class, $index); |
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| 133 | } |
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| 134 | } |
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| 135 | 847 | if (isset($documentAnnot->requireIndexes)) { |
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| 136 | 839 | $class->setRequireIndexes($documentAnnot->requireIndexes); |
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| 137 | } |
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| 138 | 847 | if (isset($documentAnnot->slaveOkay)) { |
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| 139 | 1 | $class->setSlaveOkay($documentAnnot->slaveOkay); |
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| 140 | } |
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| 141 | |||
| 142 | 847 | foreach ($reflClass->getProperties() as $property) { |
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| 143 | 846 | if (($class->isMappedSuperclass && ! $property->isPrivate()) |
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| 144 | || |
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| 145 | 846 | ($class->isInheritedField($property->name) && $property->getDeclaringClass()->name !== $class->name)) { |
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| 146 | 323 | continue; |
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| 147 | } |
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| 148 | |||
| 149 | 845 | $indexes = array(); |
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| 150 | 845 | $mapping = array('fieldName' => $property->getName()); |
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| 151 | 845 | $fieldAnnot = null; |
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| 152 | |||
| 153 | 845 | foreach ($this->reader->getPropertyAnnotations($property) as $annot) { |
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| 154 | 845 | if ($annot instanceof ODM\AbstractField) { |
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| 155 | 845 | $fieldAnnot = $annot; |
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| 156 | } |
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| 157 | 845 | if ($annot instanceof ODM\AbstractIndex) { |
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| 158 | 186 | $indexes[] = $annot; |
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| 159 | } |
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| 160 | 845 | if ($annot instanceof ODM\Indexes) { |
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| 161 | foreach (is_array($annot->value) ? $annot->value : array($annot->value) as $index) { |
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| 162 | $indexes[] = $index; |
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| 163 | } |
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| 164 | } elseif ($annot instanceof ODM\AlsoLoad) { |
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| 165 | 13 | $mapping['alsoLoadFields'] = (array) $annot->value; |
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| 166 | } elseif ($annot instanceof ODM\Version) { |
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| 167 | 97 | $mapping['version'] = true; |
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| 168 | } elseif ($annot instanceof ODM\Lock) { |
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| 169 | 845 | $mapping['lock'] = true; |
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| 170 | } |
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| 171 | } |
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| 172 | |||
| 173 | 845 | if ($fieldAnnot) { |
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| 174 | 845 | $mapping = array_replace($mapping, (array) $fieldAnnot); |
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| 175 | 845 | $class->mapField($mapping); |
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| 176 | } |
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| 177 | |||
| 178 | 845 | if ($indexes) { |
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| 179 | 186 | foreach ($indexes as $index) { |
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| 180 | 186 | $name = isset($mapping['name']) ? $mapping['name'] : $mapping['fieldName']; |
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| 181 | 186 | $keys = array($name => $index->order ?: 'asc'); |
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| 182 | 845 | $this->addIndex($class, $index, $keys); |
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| 183 | } |
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| 184 | } |
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| 185 | } |
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| 186 | |||
| 187 | // Set shard key after all fields to ensure we mapped all its keys |
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| 188 | 845 | if (isset($classAnnotations['Doctrine\ODM\MongoDB\Mapping\Annotations\ShardKey'])) { |
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| 189 | 71 | $this->setShardKey($class, $classAnnotations['Doctrine\ODM\MongoDB\Mapping\Annotations\ShardKey']); |
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| 190 | } |
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| 191 | |||
| 192 | /** @var $method \ReflectionMethod */ |
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| 193 | 844 | foreach ($reflClass->getMethods(\ReflectionMethod::IS_PUBLIC) as $method) { |
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| 194 | /* Filter for the declaring class only. Callbacks from parent |
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| 195 | * classes will already be registered. |
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| 196 | */ |
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| 197 | 594 | if ($method->getDeclaringClass()->name !== $reflClass->name) { |
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| 198 | 302 | continue; |
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| 199 | } |
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| 200 | |||
| 201 | 594 | foreach ($this->reader->getMethodAnnotations($method) as $annot) { |
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| 202 | 292 | if ($annot instanceof ODM\AlsoLoad) { |
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| 203 | 13 | $class->registerAlsoLoadMethod($method->getName(), $annot->value); |
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| 204 | } |
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| 205 | |||
| 206 | 292 | if ( ! isset($classAnnotations[ODM\HasLifecycleCallbacks::class])) { |
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| 207 | 72 | continue; |
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| 208 | } |
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| 209 | |||
| 210 | 273 | if ($annot instanceof ODM\PrePersist) { |
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| 211 | 251 | $class->addLifecycleCallback($method->getName(), Events::prePersist); |
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| 212 | } elseif ($annot instanceof ODM\PostPersist) { |
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| 213 | 11 | $class->addLifecycleCallback($method->getName(), Events::postPersist); |
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| 214 | } elseif ($annot instanceof ODM\PreUpdate) { |
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| 215 | 15 | $class->addLifecycleCallback($method->getName(), Events::preUpdate); |
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| 216 | } elseif ($annot instanceof ODM\PostUpdate) { |
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| 217 | 68 | $class->addLifecycleCallback($method->getName(), Events::postUpdate); |
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| 218 | } elseif ($annot instanceof ODM\PreRemove) { |
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| 219 | 72 | $class->addLifecycleCallback($method->getName(), Events::preRemove); |
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| 220 | } elseif ($annot instanceof ODM\PostRemove) { |
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| 221 | 70 | $class->addLifecycleCallback($method->getName(), Events::postRemove); |
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| 222 | } elseif ($annot instanceof ODM\PreLoad) { |
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| 223 | 71 | $class->addLifecycleCallback($method->getName(), Events::preLoad); |
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| 224 | } elseif ($annot instanceof ODM\PostLoad) { |
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| 225 | 72 | $class->addLifecycleCallback($method->getName(), Events::postLoad); |
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| 226 | } elseif ($annot instanceof ODM\PreFlush) { |
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| 227 | 594 | $class->addLifecycleCallback($method->getName(), Events::preFlush); |
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| 228 | } |
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| 229 | } |
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| 230 | } |
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| 231 | 844 | } |
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| 232 | |||
| 233 | 217 | private function addIndex(ClassMetadataInfo $class, $index, array $keys = array()) |
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| 249 | |||
| 250 | /** |
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| 251 | * @param ClassMetadataInfo $class |
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| 252 | * @param ODM\ShardKey $shardKey |
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| 253 | * |
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| 254 | * @throws MappingException |
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| 255 | */ |
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| 256 | 71 | private function setShardKey(ClassMetadataInfo $class, ODM\ShardKey $shardKey) |
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| 268 | |||
| 269 | /** |
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| 270 | * Factory method for the Annotation Driver |
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| 271 | * |
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| 272 | * @param array|string $paths |
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| 273 | * @param Reader $reader |
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| 274 | * @return AnnotationDriver |
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| 275 | */ |
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| 276 | 1053 | public static function create($paths = array(), Reader $reader = null) |
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| 283 | } |
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| 284 |
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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.