AnswerMapper.php

<?php

/**
 * SPDX-FileCopyrightText: 2020 Nextcloud GmbH and Nextcloud contributors
 * SPDX-License-Identifier: AGPL-3.0-or-later
 */

namespace OCA\Forms\Db;

use OCP\AppFramework\Db\QBMapper;
use OCP\DB\QueryBuilder\IQueryBuilder;
use OCP\IDBConnection;

/**
 * @extends QBMapper<Answer>
 */
class AnswerMapper extends QBMapper {

	/**
	 * AnswerMapper constructor.
	 * @param IDBConnection $db
	 */
	public function __construct(IDBConnection $db) {
		parent::__construct($db, 'forms_v2_answers', Answer::class);
	}

	/**
	 * @param int $submissionId
	 * @throws \OCP\AppFramework\Db\DoesNotExistException if not found
	 * @return Answer[]
	 */
	public function findBySubmission(int $submissionId): array {
		$qb = $this->db->getQueryBuilder();

		$qb->select('*')
			->from($this->getTableName())
			->where(
				$qb->expr()->eq('submission_id', $qb->createNamedParameter($submissionId, IQueryBuilder::PARAM_INT))
			);

		return $this->findEntities($qb);
	}

	/**
	 * @param int $submissionId
	 */
	public function deleteBySubmission(int $submissionId): void {
		$qb = $this->db->getQueryBuilder();

		$qb->delete($this->getTableName())
			->where(
				$qb->expr()->eq('submission_id', $qb->createNamedParameter($submissionId, IQueryBuilder::PARAM_INT))
			);

		$qb->executeStatement();
	}

	/**
	 * Collect all fileIds for answers of a specific submission
	 * @param int $submissionId
	 * @return int[] Array of fileIds
	 */
	public function findFileIdsBySubmission(int $submissionId): array {
		$qb = $this->db->getQueryBuilder();

		$qb->select('file_id')
			->from($this->getTableName())
			->where(
				$qb->expr()->eq('submission_id', $qb->createNamedParameter($submissionId, IQueryBuilder::PARAM_INT))
			)
			->andWhere($qb->expr()->isNotNull('file_id'));

		$result = $qb->executeQuery();
		$rows = $result->fetchFirstColumn();
		$result->closeCursor();

		return array_map('intval', $rows);
	}
}