Doctrine2 helper methods

DoctrineHelper.php

<?php

/**
 * @author Pascal Muenst <dev@timesplinter.ch>
 * @copyright Copyright (c) 2015, TiMESPLiNTER Webdevelopment
 */
class DoctrineHelper
{
	/**
	 * @param EntityManager $entityManager The used entity manager instance
	 * @param object $entity The entity to log a new version for
	 * @param string $logVersionMethodName The method name of the entity class to log a new version
	 *
	 * @throws CommonException Thrown if the callback to log the new version is invalid
	 */
	public static function logEntityVersion(EntityManager $entityManager, $entity, $logVersionMethodName = 'logVersion')
	{
		if(is_callable(array($entity, $logVersionMethodName)) === false)
			throw new CommonException('Version callback not callable: ' . get_class($entity) . '::' . $logVersionMethodName);
		
		$entityManager->beginTransaction();
		$entityManager->flush();
		
		$entity->$logVersionMethodName();
		
		$entityManager->flush();
		$entityManager->commit();
	}
}