<?php
/************************************************************************
 * This file is part of EspoCRM.
 *
 * EspoCRM – Open Source CRM application.
 * Copyright (C) 2014-2025 EspoCRM, Inc.
 * Website: https://www.espocrm.com
 *
 * 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 <https://www.gnu.org/licenses/>.
 *
 * The interactive user interfaces in modified source and object code versions
 * of this program must display Appropriate Legal Notices, as required under
 * Section 5 of the GNU Affero General Public License version 3.
 *
 * In accordance with Section 7(b) of the GNU Affero General Public License version 3,
 * these Appropriate Legal Notices must retain the display of the "EspoCRM" word.
 ************************************************************************/

namespace Espo\ORM\Locker;

/**
 * Locks and unlocks tables.
 * Wraps operations between lock and unlock into a transaction.
 */
interface Locker
{
    /**
     * Whether any table has been locked.
     */
    public function isLocked(): bool;

    /**
     * Locks a table in an exclusive mode. Starts a transaction on first call.
     */
    public function lockExclusive(string $entityType): void;

    /**
     * Locks a table in a share mode. Starts a transaction on first call.
     */
    public function lockShare(string $entityType): void;

    /**
     * Commits changes and unlocks tables.
     */
    public function commit(): void;

    /**
     * Rollbacks changes and unlocks tables.
     */
    public function rollback(): void;
}