/**
* Returns instance of session object. If session id is not defined,
* the {@link find} method will be called.
*
* Use it to get current session.
*
* @return SessionBase
*/
public static function getInstance()
{
//always initialized first by the Boot.php
if (is_null(self::$instance)) {
throw new SessionException("Session subsystem wasn't initialized in proper way. Check session.enabled config variable.");
}
if (self::$instance->getId() === null) {
self::$instance->find();
}
//may return null in case if session_enbaled is false
return self::$instance;
}
