SearchResultFactory.php

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

use Magento\Framework\Api\AttributeValue;
use Magento\Framework\Api\AttributeValueFactory;
use Magento\Framework\Api\Search\DocumentFactory;
use Magento\Framework\Api\Search\SearchResultInterface;
use Magento\Framework\Api\SearchCriteriaInterface;
use Magento\Framework\Api\Search\SearchResultFactory as BaseSearchResultFactory;
use Magento\Framework\EntityManager\HydratorInterface;

/**
 * Allows to use Repositories (instead of Collections) in UI Components Data providers
 *
 * @api
 * @since 101.1.0
 */
class SearchResultFactory
{
    /**
     * @var HydratorInterface
     */
    private $hydrator;

    /**
     * @var DocumentFactory
     */
    private $documentFactory;

    /**
     * @var BaseSearchResultFactory
     */
    private $searchResultFactory;

    /**
     * @var AttributeValueFactory
     */
    private $attributeValueFactory;

    /**
     * @param HydratorInterface $hydrator
     * @param DocumentFactory $documentFactory
     * @param BaseSearchResultFactory $searchResultFactory
     * @param AttributeValueFactory $attributeValueFactory
     */
    public function __construct(
        HydratorInterface $hydrator,
        DocumentFactory $documentFactory,
        BaseSearchResultFactory $searchResultFactory,
        AttributeValueFactory $attributeValueFactory
    ) {
        $this->hydrator = $hydrator;
        $this->documentFactory = $documentFactory;
        $this->searchResultFactory = $searchResultFactory;
        $this->attributeValueFactory = $attributeValueFactory;
    }

    /**
     * @param array $items
     * @param int $totalCount
     * @param SearchCriteriaInterface SearchCriteriaInterface $searchCriteria
     * @param string $idFieldName
     * @return SearchResultInterface
     * @since 101.1.0
     */
    public function create(
        array $items,
        $totalCount,
        SearchCriteriaInterface $searchCriteria,
        $idFieldName
    ): SearchResultInterface {
        $documents = [];
        foreach ($items as $item) {
            $itemData = $this->hydrator->extract($item);
            $itemId = $itemData[$idFieldName];
            $attributes = $this->createAttributes($idFieldName, $itemData);

            $document = $this->documentFactory->create();
            $document->setId($itemId);
            $document->setCustomAttributes($attributes);
            $documents[] = $document;
        }

        $searchResult = $this->searchResultFactory->create();
        $searchResult->setItems($documents);
        $searchResult->setTotalCount($totalCount);
        $searchResult->setSearchCriteria($searchCriteria);
        return $searchResult;
    }

    /**
     * @param string $idFieldName
     * @param array $itemData
     * @return AttributeValue[]
     */
    private function createAttributes(string $idFieldName, array $itemData): array
    {
        $attributes = [];

        $idFieldNameAttribute = $this->attributeValueFactory->create();
        $idFieldNameAttribute->setAttributeCode('id_field_name');
        $idFieldNameAttribute->setValue($idFieldName);
        $attributes['id_field_name'] = $idFieldNameAttribute;

        foreach ($itemData as $key => $value) {
            $attribute = $this->attributeValueFactory->create();
            $attribute->setAttributeCode($key);
            if (is_bool($value)) {
                // for proper work of form and grid (for example for Yes/No properties)
                $value = (string)(int)$value;
            }
            $attribute->setValue($value);
            $attributes[$key] = $attribute;
        }
        return $attributes;
    }
}