<?php
/**
 * OpenEyes
 *
 * (C) Moorfields Eye Hospital NHS Foundation Trust, 2008-2011
 * (C) OpenEyes Foundation, 2011-2013
 * This file is part of OpenEyes.
 * OpenEyes is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.
 * OpenEyes 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 General Public License for more details.
 * You should have received a copy of the GNU General Public License along with OpenEyes in a file titled COPYING. If not, see <http://www.gnu.org/licenses/>.
 *
 * @package OpenEyes
 * @link http://www.openeyes.org.uk
 * @author OpenEyes <info@openeyes.org.uk>
 * @copyright Copyright (c) 2008-2011, Moorfields Eye Hospital NHS Foundation Trust
 * @copyright Copyright (c) 2011-2013, OpenEyes Foundation
 * @license http://www.gnu.org/licenses/gpl-3.0.html The GNU General Public License V3.0
 */

class OEDbConnection extends CDbConnection
{
	public function beginTransaction()
	{
		if (Yii::app()->params['enable_transactions']) {
			return parent::beginTransaction();
		} else {
			$stub = new OETransactionStub;
			return $stub;
		}
	}

	/**
	 * Begin a transaction if there is not already one in progress
	 */
	public function beginInternalTransaction()
	{
		if ($this->getCurrentTransaction()) {
			$stub = new OETransactionStub;
			return $stub;
		} else {
			return $this->beginTransaction();
		}
	}
}
