<?php
//src/AppBundle/Command/SearchCommand.php

namespace AppBundle\Command;

use eZ\Publish\API\Repository\SearchService;
use eZ\Publish\API\Repository\Values\Content\Query;
use Symfony\Bundle\FrameworkBundle\Command\ContainerAwareCommand;
use Symfony\Component\Console\Input\InputInterface;
use Symfony\Component\Console\Output\OutputInterface;

class SearchCommand extends ContainerAwareCommand
{
    protected function configure()
    {
        $this->setName('app:search');
    }

    protected function execute(InputInterface $input, OutputInterface $output)
    {
        $repository = $this->getContainer()->get('ezpublish.api.repository');

        /** @var SearchService $searchService */
        $searchService = $repository->getSearchService();

        $testQuery = new Query();
        $testQuery->query = new Query\Criterion\LogicalAnd([
            new Query\Criterion\ContentTypeIdentifier('folder'),
            new Query\Criterion\Field('short_name', Query\Criterion\Operator::EQ, NULL),
        ]);

        $searchResult = $searchService->findContent($testQuery);

        foreach ( $searchResult->searchHits as $searchHit )
        {
            $output->writeln( $searchHit->valueObject->contentInfo->name );
        }
    }
}