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<?php
/**
* Copyright © Magento, Inc. All rights reserved.
* See COPYING.txt for license details.
*/
declare(strict_types=1);
namespace Magento\CatalogGraphQl\Model;
use GraphQL\Language\AST\FieldNode;
use Magento\Eav\Model\Entity\Collection\AbstractCollection;
/**
* Joins attributes for provided field node field names.
*/
class AttributesJoiner
{
/**
* @var array
*/
private $queryFields = [];
/**
* Join fields attached to field node to collection's select.
*
* @param FieldNode $fieldNode
* @param AbstractCollection $collection
* @return void
*/
public function join(FieldNode $fieldNode, AbstractCollection $collection) : void
{
foreach ($this->getQueryFields($fieldNode) as $field) {
if (!$collection->isAttributeAdded($field)) {
$collection->addAttributeToSelect($field);
}
}
}
/**
* Get an array of queried fields.
*
* @param FieldNode $fieldNode
* @return string[]
*/
public function getQueryFields(FieldNode $fieldNode)
{
if (!isset($this->queryFields[$fieldNode->name->value])) {
$this->queryFields[$fieldNode->name->value] = [];
$query = $fieldNode->selectionSet->selections;
/** @var FieldNode $field */
foreach ($query as $field) {
if ($field->kind === 'InlineFragment') {
continue;
}
$this->queryFields[$fieldNode->name->value][] = $field->name->value;
}
}
return $this->queryFields[$fieldNode->name->value];
}
}