<?php

declare(strict_types=1);

/**
 * @copyright 2021 Christoph Wurst <christoph@winzerhof-wurst.at>
 *
 * @author Arthur Schiwon <blizzz@arthur-schiwon.de>
 * @author Christoph Wurst <christoph@winzerhof-wurst.at>
 *
 * @license GNU AGPL version 3 or any later version
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Affero General Public License as
 * published by the Free Software Foundation, either version 3 of the
 * License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 * GNU Affero General Public License for more details.
 *
 * You should have received a copy of the GNU Affero General Public License
 * along with this program. If not, see <http://www.gnu.org/licenses/>.
 *
 */
namespace OCP\DB;

use PDO;

/**
 * This interface represents the result of a database query.
 *
 * Usage:
 *
 * ```php
 * $qb = $this->db->getQueryBuilder();
 * $qb->select(...);
 * $result = $query->executeQuery();
 * ```
 *
 * This interface must not be implemented in your application.
 *
 * @since 21.0.0
 */
interface IResult {
	/**
	 * @return true
	 *
	 * @since 21.0.0
	 */
	public function closeCursor(): bool;

	/**
	 * @param int $fetchMode
	 *
	 * @return mixed
	 *
	 * @since 21.0.0
	 */
	public function fetch(int $fetchMode = PDO::FETCH_ASSOC);

	/**
	 * @param int $fetchMode (one of PDO::FETCH_ASSOC, PDO::FETCH_NUM or PDO::FETCH_COLUMN (2, 3 or 7)
	 *
	 * @return list<mixed>
	 *
	 * @since 21.0.0
	 */
	public function fetchAll(int $fetchMode = PDO::FETCH_ASSOC): array;

	/**
	 * @return mixed
	 *
	 * @since 21.0.0
	 * @deprecated 21.0.0 use \OCP\DB\IResult::fetchOne
	 */
	public function fetchColumn();

	/**
	 * Returns the first value of the next row of the result or FALSE if there are no more rows.
	 *
	 * @return false|mixed
	 *
	 * @since 21.0.0
	 */
	public function fetchOne();

	/**
	 * @return int
	 *
	 * @since 21.0.0
	 */
	public function rowCount(): int;
}