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<?php declare(strict_types=1); |
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namespace Igni\Storage; |
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use Cache\Adapter\Apc\ApcCachePool; |
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use Cache\Adapter\Apcu\ApcuCachePool; |
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use Cache\Adapter\PHPArray\ArrayCachePool; |
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use Igni\Storage\Exception\HydratorException; |
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use Igni\Storage\Exception\RepositoryException; |
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use Igni\Storage\Hydration\HydratorAutoGenerate; |
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use Igni\Storage\Hydration\HydratorFactory; |
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use Igni\Storage\Hydration\ObjectHydrator; |
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use Igni\Storage\Mapping\IdentityMap; |
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use Igni\Storage\Mapping\MetaData\EntityMetaData; |
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use Igni\Storage\Mapping\MetaData\MetaDataFactory; |
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use Igni\Storage\Mapping\MetaData\Strategy\AnnotationMetaDataFactory; |
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use Psr\SimpleCache\CacheInterface; |
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class EntityManager implements IdentityMap, RepositoryContainer, MetaDataFactory |
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{ |
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/** @var Entity[] */ |
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private $registry = []; |
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/** @var Repository[] */ |
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private $repositories = []; |
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/** @var HydratorFactory */ |
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private $hydratorFactory; |
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/** @var ObjectHydrator[] */ |
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private $hydrators = []; |
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/** @var MetaDataFactory */ |
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private $metaDataFactory; |
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/** @var string */ |
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private $hydratorDir; |
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/** @var string */ |
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private $hydratorNamespace; |
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/** @var CacheInterface */ |
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private $cache; |
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/** |
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* EntityManager constructor. |
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* @param string|null $hydratorDir |
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* @param string|null $hydratorNamespace |
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* @param CacheInterface|null $cache |
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* @param HydratorAutoGenerate|null $hydratorAutoGenerate |
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* @param MetaDataFactory|null $metaDataFactory |
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*/ |
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public function __construct( |
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string $hydratorDir = null, |
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string $hydratorNamespace = null, |
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CacheInterface $cache = null, |
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HydratorAutoGenerate $hydratorAutoGenerate = null, |
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MetaDataFactory $metaDataFactory = null |
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) { |
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if ($hydratorDir === null) { |
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$hydratorDir = sys_get_temp_dir(); |
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} |
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if ($hydratorAutoGenerate === null) { |
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$hydratorAutoGenerate = HydratorAutoGenerate::IF_NOT_EXISTS; |
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} |
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if (!is_writable($hydratorDir)) { |
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throw new HydratorException("Hydrators cannot be generated, directory ($hydratorDir) is not writable."); |
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} |
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if ($metaDataFactory === null) { |
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$metaDataFactory = new AnnotationMetaDataFactory(); |
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} |
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if ($cache === null) { |
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if (extension_loaded('apcu') && ini_get('apc.enabled')) { |
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$cache = new ApcuCachePool(); |
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} elseif (extension_loaded('apc') && ini_get('apc.enabled')) { |
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$cache = new ApcCachePool(); |
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} else { |
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$cache = new ArrayCachePool(); |
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} |
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} |
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$this->cache = $cache; |
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$this->hydratorDir = $hydratorDir; |
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$this->metaDataFactory = $metaDataFactory; |
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$this->hydratorNamespace = $hydratorNamespace ?? ''; |
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$this->hydratorFactory = new HydratorFactory($this, $hydratorAutoGenerate); |
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} |
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public function getHydratorDir(): string |
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{ |
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return $this->hydratorDir; |
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} |
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public function getHydratorNamespace(): string |
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{ |
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return $this->hydratorNamespace; |
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} |
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/** |
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* Creates new entity in the storage. |
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* |
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* @param Entity $entity |
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* @return Entity |
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*/ |
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public function create(Entity $entity): Entity |
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{ |
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$this->getRepository(get_class($entity))->create($entity); |
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$this->attach($entity); |
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return $entity; |
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} |
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/** |
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* Updated entity in the storage. |
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* |
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* @param Entity $entity |
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* @return Entity |
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*/ |
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public function update(Entity $entity): Entity |
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{ |
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$this->getRepository(get_class($entity))->update($entity); |
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return $entity; |
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} |
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/** |
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* Removes entity from the storage. |
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* |
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* @param Entity $entity |
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* @return Entity |
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*/ |
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public function remove(Entity $entity): Entity |
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{ |
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$this->getRepository(get_class($entity))->remove($entity); |
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$this->detach($entity); |
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return $entity; |
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} |
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/** |
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* Retrieves entity by identifier from the storage. |
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* |
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* @param string $entity |
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* @param $id |
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* @return Entity |
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*/ |
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public function get(string $entity, $id): Entity |
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{ |
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$key = $this->getId($entity, $id); |
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if ($this->has($entity, $id)) { |
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return $this->registry[$key]; |
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} |
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return $this->getRepository($entity)->get($id); |
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} |
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public function getRepository(string $entity): Repository |
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{ |
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if ($this->hasRepository($entity)) { |
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return $this->repositories[$entity]; |
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} |
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throw RepositoryException::forNotRegisteredRepository($entity); |
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} |
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public function hasRepository(string $entity): bool |
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{ |
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return isset($this->repositories[$entity]); |
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} |
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public function addRepository(string $entity, Repository $repository): void |
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{ |
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$this->repositories[$entity] = $repository; |
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} |
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public function attach(Entity $entity): Entity |
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{ |
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$key = $this->getId($entity); |
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if (!isset($this->registry[$key])) { |
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$this->registry[$key] = $entity; |
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} |
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return $this->registry[$key]; |
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} |
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public function detach(Entity $entity): Entity |
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{ |
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$key = $this->getId($entity); |
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if (isset($this->registry[$key])) { |
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unset($this->registry[$key]); |
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} |
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return $entity; |
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} |
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/** |
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* |
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* @param string $class |
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* @param $id |
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* @return bool |
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*/ |
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public function has(string $class, $id): bool |
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{ |
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$key = $this->getId($class, $id); |
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return isset($this->registry[$key]); |
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} |
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/** |
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* Checks if entity lives in the identity map. |
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* |
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* @param Entity $entity |
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* @return bool |
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*/ |
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public function contains(Entity $entity): bool |
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{ |
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return in_array($entity, $this->registry, true); |
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} |
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/** |
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* Clears identity map. |
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*/ |
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public function clear(): void |
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{ |
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$this->registry = []; |
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} |
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/** |
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* Gets global id for entity which is used for |
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* later storage in the identity map. |
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* |
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* @param $entity |
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* @param null $id |
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* @return string |
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*/ |
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private function getId($entity, $id = null): string |
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{ |
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if ($entity instanceof Entity) { |
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return get_class($entity) . '@' . $entity->getId()->getValue(); |
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} |
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return "${entity}@${id}"; |
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} |
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/** |
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* Creates instance of the entity class and hydrates it with passed data. |
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* |
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* @param string $entityClass |
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* @param array $data |
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* @return object |
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*/ |
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public function hydrate(string $entityClass, array $data) |
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{ |
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$hydrator = $this->getHydrator($entityClass); |
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return $hydrator->hydrate($data); |
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} |
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/** |
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* Extracts data from passed entity and returns it. |
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* |
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* @param $entity |
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* @return array |
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*/ |
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public function extract($entity): array |
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{ |
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$entityClass = get_class($entity); |
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$hydrator = $this->getHydrator($entityClass); |
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return $hydrator->extract($entity); |
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} |
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/** |
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* Returns hydrator for the given entity. |
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* |
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* @param string $entity |
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* @return ObjectHydrator |
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*/ |
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public function getHydrator(string $entity): ObjectHydrator |
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{ |
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if (!isset($this->hydrators[$entity])) { |
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$this->hydrators[$entity] = $this->hydratorFactory->get($entity); |
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} |
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return $this->hydrators[$entity]; |
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} |
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/** |
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* Returns entity's mapping metadata information. |
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* |
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* @param string|class $entity |
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* @return EntityMetaData |
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*/ |
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public function getMetaData(string $entity): EntityMetaData |
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{ |
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$key = str_replace('\\', '.', $entity) . '.metadata'; |
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if (!$this->cache->has($key)) { |
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$metaData = $this->metaDataFactory->getMetaData($entity); |
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$this->cache->set($key, $metaData); |
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} |
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return $this->cache->get($key); |
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} |
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} |
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