public function __construct()
{
$params = func_get_args();
if (count($params) < 1) {
throw new CException('Invalid arguments count passed to c-tor of' . __CLASS__ . '!');
}
// Cast all params to string values
// foreach($params as $idx => $param)
// if(!is_string($param))
// $params[$idx] = (string)$param;
parent::__construct($this->getConcatExpression(), $params);
}
public function __construct($toLower)
{
$this->_toLower = $toLower;
parent::__construct($this->generateExpression());
}