<?php
/**
* Copyright © Magento, Inc. All rights reserved.
* See COPYING.txt for license details.
*/

namespace Magento\Framework\EntityManager\Operation\Read;

use Magento\Framework\EntityManager\TypeResolver;
use Magento\Framework\EntityManager\MetadataPool;
use Magento\Framework\EntityManager\HydratorPool;
use Magento\Framework\EntityManager\Db\ReadRow;

class ReadMain
{
/**
* @var TypeResolver
*/
private $typeResolver;

/**
* @var MetadataPool
*/
private $metadataPool;

/**
* @var HydratorPool
*/
private $hydratorPool;

/**
* @var ReadRow
*/
private $readRow;

/**
* @param TypeResolver $typeResolver
* @param MetadataPool $metadataPool
* @param HydratorPool $hydratorPool
* @param ReadRow $readRow
*/
public function __construct(
TypeResolver $typeResolver,
MetadataPool $metadataPool,
HydratorPool $hydratorPool,
ReadRow $readRow
) {
$this->typeResolver = $typeResolver;
$this->metadataPool = $metadataPool;
$this->hydratorPool = $hydratorPool;
$this->readRow = $readRow;
}

/**
* @param object $entity
* @param string $identifier
* @return object
*/
public function execute($entity, $identifier)
{
$entityType = $this->typeResolver->resolve($entity);
$hydrator = $this->hydratorPool->getHydrator($entityType);
$entityData = $this->readRow->execute($entityType, $identifier);
$entity = $hydrator->hydrate($entity, $entityData);
return $entity;
}
}