How does \Magento\Catalog\Model\Product::load() work?

dmitry_fedyuk · April 23, 2016, 12:52pm

Context: How does \Magento\Catalog\Api\ProductRepository::getById() work?

magento/magento2/blob/958164/lib/internal/Magento/Framework/Model/AbstractModel.php#L520-L528


/**
 * Load object data
 *
 * @deprecated
 * @param integer $modelId
 * @param null|string $field
 * @return $this
 */
public function load($modelId, $field = null)

github.com

magento/magento2/blob/958164/lib/internal/Magento/Framework/Model/AbstractModel.php#L552-L566


/**
 * Processing object before load data
 *
 * @param int $modelId
 * @param null|string $field
 * @return $this
 */
protected function _beforeLoad($modelId, $field = null)
{
    $params = ['object' => $this, 'field' => $field, 'value' => $modelId];
    $this->_eventManager->dispatch('model_load_before', $params);
    $params = array_merge($params, $this->_getEventData());
    $this->_eventManager->dispatch($this->_eventPrefix . '_load_before', $params);
    return $this;
}

github.com

magento/magento2/blob/958164/lib/internal/Magento/Framework/Model/AbstractModel.php#L531-L531


$this->_getResource()->load($this, $modelId, $field);

github.com

magento/magento2/blob/958164/lib/internal/Magento/Framework/Model/AbstractModel.php#L461-L476


/**
 * Get resource instance
 *
 * @throws \Magento\Framework\Exception\LocalizedException
 * @return \Magento\Framework\Model\ResourceModel\Db\AbstractDb
 */
protected function _getResource()
{
    if (empty($this->_resourceName) && empty($this->_resource)) {
        throw new \Magento\Framework\Exception\LocalizedException(
            new \Magento\Framework\Phrase('The resource isn\'t set.')
        );
    }


    return $this->_resource ?: \Magento\Framework\App\ObjectManager::getInstance()->get($this->_resourceName);
}

github.com

magento/magento2/blob/958164/app/code/Magento/Catalog/Model/ResourceModel/Product.php#L647-L655


/**
 * Reset firstly loaded attributes
 *
 * @param \Magento\Framework\Model\AbstractModel $object
 * @param integer $entityId
 * @param array|null $attributes
 * @return $this
 */
public function load($object, $entityId, $attributes = [])

github.com

magento/magento2/blob/958164/app/code/Magento/Eav/Model/Entity/AbstractEntity.php#L974-L992


/**
 * Loads attributes metadata.
 *
 * @param array|null $attributes
 * @return $this
 */
protected function loadAttributesMetadata($attributes)
{
    if (empty($attributes)) {
        $this->loadAllAttributes();
    } else {
        if (!is_array($attributes)) {
            $attributes = [$attributes];
        }
        foreach ($attributes as $attrCode) {
            $this->getAttribute($attrCode);
        }
    }
}

github.com

magento/magento2/blob/958164/app/code/Magento/Eav/Model/Entity/AbstractEntity.php#L502-L511


/**
 * Retrieve configuration for all attributes
 *
 * @param null|\Magento\Framework\DataObject $object
 * @return $this
 */
public function loadAllAttributes($object = null)
{
    return $this->getAttributeLoader()->loadAllAttributes($this, $object);
}

Details: How is \Magento\Framework\DataObject\AttributeLoaderInterface::loadAllAttributes() implemented?

github.com

magento/magento2/blob/958164/app/code/Magento/Catalog/Model/ResourceModel/Product.php#L658-L658


$this->getEntityManager()->load($object, $entityId, \Magento\Catalog\Api\Data\ProductInterface::class, []);

github.com

magento/magento2/blob/958164/app/code/Magento/Catalog/Model/ResourceModel/Product.php#L702-L712


/**
 * @return \Magento\Framework\EntityManager\EntityManager
 */
private function getEntityManager()
{
    if (null === $this->entityManager) {
        $this->entityManager = \Magento\Framework\App\ObjectManager::getInstance()
            ->get('Magento\Framework\EntityManager\EntityManager');
    }
    return $this->entityManager;
}

github.com

magento/magento2/blob/958164/lib/internal/Magento/Framework/EntityManager/EntityManager.php#L40-L47


/**
 * @param object $entity
 * @param string $identifier
 * @param string|null $entityType
 * @param array $arguments
 * @return mixed
 */
public function load($entity, $identifier, $entityType = null, $arguments = [])

Details: How does \Magento\Framework\EntityManager\EntityManager::load() work?

dmitry_fedyuk · April 23, 2016, 9:21pm