SkuFactory.php

<?php
 
namespace Bitrix\Catalog\v2\Sku;
 
use Bitrix\Catalog\v2\BaseIblockElementEntity;
use Bitrix\Catalog\v2\BaseIblockElementFactory;
use Bitrix\Catalog\v2\IoC\Dependency;
use Bitrix\Main\NotSupportedException;
 
class SkuFactory extends BaseIblockElementFactory
{
    public const SIMPLE_SKU = SimpleSku::class;
    public const SKU = Sku::class;
    public const SKU_COLLECTION = SkuCollection::class;
 
    public function createEntity(string $entityClass = null): BaseIblockElementEntity
    {
        if ($entityClass === null)
        {
            $entityClass = $this->iblockInfo->canHaveSku() ? self::SKU : self::SIMPLE_SKU;
        }
 
        if ($entityClass === self::SKU && !$this->iblockInfo->canHaveSku())
        {
            throw new NotSupportedException(sprintf(
                'Product catalog {%s} does not support {%s} type.',
                $this->iblockInfo->getProductIblockId(), $entityClass
            ));
        }
 
        if (!is_subclass_of($entityClass, BaseSku::class))
        {
            throw new NotSupportedException(sprintf(
                'Entity with type {%s} must be an instance of {%s}.',
                $entityClass, BaseSku::class
            ));
        }
 
        return $this->makeEntity($entityClass);
    }
 
    public function createCollection(): SkuCollection
    {
        return $this->container->make(self::SKU_COLLECTION, [
            Dependency::IBLOCK_INFO => $this->iblockInfo,
        ]);
    }
}