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<?php |
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/* |
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* This file is part of the moss-storage package |
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* |
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* (c) Michal Wachowski <[email protected]> |
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* |
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* For the full copyright and license information, please view the LICENSE |
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* file that was distributed with this source code. |
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*/ |
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namespace Moss\Storage\Query\Relation; |
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use Moss\Storage\Model\Definition\RelationInterface as RelationDefinitionInterface; |
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use Moss\Storage\Model\ModelBag; |
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use Moss\Storage\Model\ModelInterface; |
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use Moss\Storage\Query\QueryException; |
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use Moss\Storage\Query\StorageInterface; |
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/** |
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* Entity relationship factory |
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* |
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* @author Michal Wachowski <[email protected]> |
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* @package Moss\Storage |
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*/ |
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class RelationFactory implements RelationFactoryInterface |
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{ |
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const RELATION_ONE = 'one'; |
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const RELATION_MANY = 'many'; |
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const RELATION_ONE_TROUGH = 'oneTrough'; |
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const RELATION_MANY_TROUGH = 'manyTrough'; |
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/** |
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* @var StorageInterface |
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*/ |
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protected $storage; |
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/** |
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* @var ModelBag |
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*/ |
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protected $bag; |
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/** |
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* Constructor |
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* |
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* @param StorageInterface $storage |
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* @param ModelBag $models |
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*/ |
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public function __construct(StorageInterface $storage, ModelBag $models) |
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{ |
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$this->storage = $storage; |
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$this->bag = $models; |
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} |
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/** |
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* Sets model and its relation |
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* |
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* @param ModelInterface $model |
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* @param string $relation |
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* |
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* @return RelationInterface |
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* @throws RelationException |
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*/ |
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public function build(ModelInterface $model, $relation) |
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{ |
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list($current, $further) = $this->splitRelationName($relation); |
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$definition = $this->fetchDefinition($model, $current); |
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switch ($definition->type()) { |
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case self::RELATION_ONE: |
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$instance = new OneRelation($this->storage, $definition, $this->bag, $this); |
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break; |
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case self::RELATION_MANY: |
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$instance = new ManyRelation($this->storage, $definition, $this->bag, $this); |
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break; |
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case self::RELATION_ONE_TROUGH: |
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$instance = new OneTroughRelation($this->storage, $definition, $this->bag, $this); |
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break; |
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case self::RELATION_MANY_TROUGH: |
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$instance = new ManyTroughRelation($this->storage, $definition, $this->bag, $this); |
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break; |
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default: |
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throw new RelationException(sprintf('Invalid relation type "%s" for "%s"', $definition->type(), $definition->entity())); |
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} |
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if ($further) { |
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$instance->with($further); |
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} |
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return $instance; |
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} |
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/** |
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* Fetches relation |
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* |
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* @param ModelInterface $model |
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* @param string $relation |
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* |
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* @return RelationDefinitionInterface |
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* @throws QueryException |
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*/ |
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protected function fetchDefinition(ModelInterface $model, $relation) |
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{ |
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if ($model->hasRelation($relation)) { |
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return $model->relation($relation); |
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} |
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throw new RelationException(sprintf('Unable to resolve relation "%s" not found in model "%s"', $relation, $model->entity())); |
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} |
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/** |
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* Splits relation name |
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* |
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* @param string $relationName |
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* |
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* @return array |
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*/ |
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public function splitRelationName($relationName) |
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{ |
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if (strpos($relationName, '.') !== false) { |
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return explode('.', $relationName, 2); |
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} |
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return [$relationName, null]; |
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} |
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} |
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mossphp /
moss-storage
