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<?php |
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namespace LAG\AdminBundle\DataProvider\Factory; |
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use Doctrine\ORM\EntityManagerInterface; |
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use Exception; |
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use LAG\AdminBundle\DataProvider\DataProvider; |
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use LAG\AdminBundle\DataProvider\DataProviderInterface; |
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use LAG\AdminBundle\Repository\RepositoryInterface; |
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class DataProviderFactory |
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{ |
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/** |
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* The loaded data providers |
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* |
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* @var DataProviderInterface[] |
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*/ |
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protected $dataProviders = []; |
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/** |
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* @var EntityManagerInterface |
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*/ |
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protected $entityManager; |
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/** |
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* DataProviderFactory constructor. |
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* |
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* @param EntityManagerInterface $entityManager A Doctrine ORM entity manager |
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*/ |
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public function __construct(EntityManagerInterface $entityManager) |
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{ |
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$this->entityManager = $entityManager; |
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} |
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/** |
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* Add a data provider to the collection. |
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* |
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* @param string $id The data provider service id |
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* @param DataProviderInterface $dataProvider The data provider |
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* |
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* @throws Exception |
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*/ |
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public function add($id, DataProviderInterface $dataProvider) |
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{ |
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if ($this->has($id)) { |
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throw new Exception('Trying to add the data provider '.$id.' twice'); |
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} |
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// add the data provider to collection, indexed by ids |
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$this->dataProviders[$id] = $dataProvider; |
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} |
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/** |
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* Return an configured data provider or try to create one for the given entity class. |
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* |
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* @param string|null id The id of an existing data provider service |
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* @param string|null $entityClass The class of the related entity. It will be used to find a repository in Doctrine |
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* registry |
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* |
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* @return DataProviderInterface |
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* |
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* @throws Exception |
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*/ |
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public function get($id = null, $entityClass = null) |
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{ |
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if (null === $id && null === $entityClass) { |
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throw new Exception('You should either provide an data provider or a entity class to get a data provider'); |
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} |
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if (null !== $id && $this->has($id)) { |
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// a name is provided and the data provider exist, so we return the found data provider |
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$dataProvider = $this->dataProviders[$id]; |
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} else { |
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// no name was provided, so we try to create a generic data provider with th given entity class |
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$dataProvider = $this->create($entityClass); |
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} |
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return $dataProvider; |
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} |
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/** |
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* Return true if a data provider with the given id exists. |
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* |
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* @param string $id The data provider id |
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* |
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* @return bool |
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*/ |
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public function has($id) |
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{ |
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return array_key_exists($id, $this->dataProviders); |
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} |
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/** |
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* Create a generic data provider. |
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* |
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* @param string $entityClass The class of the related entity |
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* |
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* @return DataProviderInterface The created data provider |
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* |
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* @throws Exception An exception is thrown if the found repository with given entity class does not implements |
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* RepositoryInterface. |
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*/ |
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public function create($entityClass) |
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{ |
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// get the repository corresponding to the given entity class |
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$repository = $this |
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->entityManager |
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->getRepository($entityClass); |
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// the repository should implements the RepositoryInterface, to ensure it has the methods create and save |
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if (!($repository instanceof RepositoryInterface)) { |
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$repositoryClass = get_class($repository); |
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throw new Exception( |
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sprintf( |
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'Repository %s should implements %s', |
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$repositoryClass, |
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RepositoryInterface::class |
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) |
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); |
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} |
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// create a new generic data provider from the found repository |
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$dataProvider = new DataProvider($repository); |
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return $dataProvider; |
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} |
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} |
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larriereguichet /
AdminBundle
