Adapter::__construct PHP Method

    public function __construct(Adaptee $adaptee)
    {
        $this->_adaptee = $adaptee;
    }

 public function __construct($db = null)
 {
     parent::__construct($db);
     $this->_currentPage = 1;
     $this->_itemsByPage = 30;
     $this->_totalItems = 0;
     $this->_totalPages = 0;
     $this->_query = '';
     $this->_queryCount = '';
 }