Attribute.php

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<?php
namespace Magento\Catalog\Model\Entity;

use Magento\Catalog\Model\Attribute\LockValidatorInterface;
use Magento\Framework\Api\AttributeValueFactory;
use Magento\Framework\Stdlib\DateTime\DateTimeFormatterInterface;

class Attribute extends \Magento\Eav\Model\Entity\Attribute
{
    protected $_eventPrefix = 'catalog_entity_attribute';

    protected $_eventObject = 'attribute';

    const MODULE_NAME = 'Magento_Catalog';

    protected $attrLockValidator;

    public function __construct(
        \Magento\Framework\Model\Context $context,
        \Magento\Framework\Registry $registry,
        \Magento\Framework\Api\ExtensionAttributesFactory $extensionFactory,
        AttributeValueFactory $customAttributeFactory,
        \Magento\Eav\Model\Config $eavConfig,
        \Magento\Eav\Model\Entity\TypeFactory $eavTypeFactory,
        \Magento\Store\Model\StoreManagerInterface $storeManager,
        \Magento\Eav\Model\ResourceModel\Helper $resourceHelper,
        \Magento\Framework\Validator\UniversalFactory $universalFactory,
        \Magento\Eav\Api\Data\AttributeOptionInterfaceFactory $optionDataFactory,
        \Magento\Framework\Reflection\DataObjectProcessor $dataObjectProcessor,
        \Magento\Framework\Api\DataObjectHelper $dataObjectHelper,
        \Magento\Framework\Stdlib\DateTime\TimezoneInterface $localeDate,
        \Magento\Catalog\Model\Product\ReservedAttributeList $reservedAttributeList,
        \Magento\Framework\Locale\ResolverInterface $localeResolver,
        DateTimeFormatterInterface $dateTimeFormatter,
        LockValidatorInterface $lockValidator,
        \Magento\Framework\Model\ResourceModel\AbstractResource $resource = null,
        \Magento\Framework\Data\Collection\AbstractDb $resourceCollection = null,
        array $data = []
    ) {
        $this->attrLockValidator = $lockValidator;
        parent::__construct(
            $context,
            $registry,
            $extensionFactory,
            $customAttributeFactory,
            $eavConfig,
            $eavTypeFactory,
            $storeManager,
            $resourceHelper,
            $universalFactory,
            $optionDataFactory,
            $dataObjectProcessor,
            $dataObjectHelper,
            $localeDate,
            $reservedAttributeList,
            $localeResolver,
            $dateTimeFormatter,
            $resource,
            $resourceCollection,
            $data
        );
    }

    public function beforeSave()
    {
        try {
            $this->attrLockValidator->validate($this);
        } catch (\Magento\Framework\Exception\LocalizedException $exception) {
            throw new \Magento\Framework\Exception\LocalizedException(__($exception->getMessage()));
        }

        $this->setData('modulePrefix', self::MODULE_NAME);
        return parent::beforeSave();
    }

    public function afterSave()
    {
        $this->_eavConfig->clear();
        return parent::afterSave();
    }
}