public function __construct($vals = null)
 {
     if (!isset(self::$_TSPEC)) {
         self::$_TSPEC = array(1 => array('var' => 'dbname', 'type' => TType::STRING), 2 => array('var' => 'tbl_name', 'type' => TType::STRING), 3 => array('var' => 'new_tbl', 'type' => TType::STRUCT, 'class' => 'metastore_Table'));
     }
     if (is_array($vals)) {
         if (isset($vals['dbname'])) {
             $this->dbname = $vals['dbname'];
         }
         if (isset($vals['tbl_name'])) {
             $this->tbl_name = $vals['tbl_name'];
         }
         if (isset($vals['new_tbl'])) {
             $this->new_tbl = $vals['new_tbl'];
         }
     }
 }