SearchCriteria OR Example for Magento 2

or-example.php

<?php

declare(strict_types = 1);

namespace Training5\VendorRepository\Controller\Test;

use Magento\Catalog\Api\Data\ProductInterface;
use Magento\Catalog\Api\ProductRepositoryInterface;
use Magento\Framework\Api\Filter;
use Magento\Framework\Api\FilterBuilder;
use Magento\Framework\Api\SearchCriteriaBuilder;
use Magento\Framework\App\Action\Action;
use Magento\Framework\App\Action\Context;
use Magento\Framework\Controller\Result\Raw as RawResult;
use Magento\Framework\Controller\ResultFactory;

class OrExample extends Action
{
    /**
     * @var ProductRepositoryInterface
     */
    private $productRepository;

    /**
     * @var SearchCriteriaBuilder
     */
    private $searchCriteriaBuilder;

    /**
     * @var FilterBuilder
     */
    private $filterBuilder;

    /**
     * @var ResultFactory
     */
    private $pageResultFactory;

    public function __construct(
        Context $context,
        ProductRepositoryInterface $productRepository,
        SearchCriteriaBuilder $searchCriteriaBuilder,
        FilterBuilder $filterBuilder,
        ResultFactory $pageResultFactory
    ) {
        parent::__construct($context);
        $this->productRepository = $productRepository;
        $this->searchCriteriaBuilder = $searchCriteriaBuilder;
        $this->filterBuilder = $filterBuilder;
        $this->pageResultFactory = $pageResultFactory;
    }


    public function execute(): RawResult
    {
        $skusToMatch = ['24-MB01', '24-MB04'];
        
        $this->searchCriteriaBuilder->addFilters(array_map(function (string $sku): Filter {
            return $this->filterBuilder->setField('sku')->setValue($sku)->create();
        }, $skusToMatch));

        $searchResult = $this->productRepository->getList($this->searchCriteriaBuilder->create());
        
        $content = implode(PHP_EOL, array_map(function (ProductInterface $product): string {
            return sprintf('%s (%s)', $product->getName(), $product->getSku());
        }, $searchResult->getItems()));
        
        return $this->createRawResultPage($content);
    }

    private function createRawResultPage(string $content): RawResult
    {
        /** @var RawResult $page */
        $page = $this->pageResultFactory->create(ResultFactory::TYPE_RAW);
        $page->setHeader('Content-Type', 'text/plain');
        $page->setContents($content);
        return $page;
    }
}

result.txt

Joust Duffle Bag (24-MB01)
Strive Shoulder Pack (24-MB04)

Great !

$this->searchCriteriaBuilder->addFilter(ProductInterface::SKU, $skusToMatch, 'in');