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Current File : //home/rtorresani/www/vendor/magento/framework/Model/ResourceModel/Db/VersionControl/Collection.php

<?php
/**
 * Copyright © Magento, Inc. All rights reserved.
 * See COPYING.txt for license details.
 */
namespace Magento\Framework\Model\ResourceModel\Db\VersionControl;

/**
 * Class Collection
 */
abstract class Collection extends \Magento\Framework\Model\ResourceModel\Db\Collection\AbstractCollection
{
    /**
     * @var Snapshot
     */
    protected $entitySnapshot;

    /**
     * @param \Magento\Framework\Data\Collection\EntityFactoryInterface $entityFactory
     * @param \Psr\Log\LoggerInterface $logger
     * @param \Magento\Framework\Data\Collection\Db\FetchStrategyInterface $fetchStrategy
     * @param \Magento\Framework\Event\ManagerInterface $eventManager
     * @param Snapshot $entitySnapshot
     * @param \Magento\Framework\DB\Adapter\AdapterInterface $connection
     * @param \Magento\Framework\Model\ResourceModel\Db\AbstractDb $resource
     */
    public function __construct(
        \Magento\Framework\Data\Collection\EntityFactoryInterface $entityFactory,
        \Psr\Log\LoggerInterface $logger,
        \Magento\Framework\Data\Collection\Db\FetchStrategyInterface $fetchStrategy,
        \Magento\Framework\Event\ManagerInterface $eventManager,
        Snapshot $entitySnapshot,
        \Magento\Framework\DB\Adapter\AdapterInterface $connection = null,
        \Magento\Framework\Model\ResourceModel\Db\AbstractDb $resource = null
    ) {
        $this->entitySnapshot = $entitySnapshot;
        parent::__construct(
            $entityFactory,
            $logger,
            $fetchStrategy,
            $eventManager,
            $connection,
            $resource
        );
    }

    /**
     * @inheritdoc
     */
    public function fetchItem()
    {
        $item = parent::fetchItem();
        if ($item) {
            $this->entitySnapshot->registerSnapshot($item);
        }
        return $item;
    }

    /**
     * @inheritdoc
     */
    protected function beforeAddLoadedItem(\Magento\Framework\DataObject $item)
    {
        $this->entitySnapshot->registerSnapshot($item);
        return $item;
    }
}