/** 
  * class constructor 
  * @param resource &$db reference to database handler
  **/
 function __construct(&$db)
 {
     $this->resultsCfg = config_get('results');
     $this->testCaseCfg = config_get('testcase_cfg');
     $this->db = $db;
     parent::__construct($db);
     $this->map_tc_status = $this->resultsCfg['status_code'];
     // This will be used to create dynamically counters if user add new status
     foreach ($this->resultsCfg['status_label_for_exec_ui'] as $tc_status_verbose => $label) {
         $this->tc_status_for_statistics[$tc_status_verbose] = $this->map_tc_status[$tc_status_verbose];
     }
     if (!isset($this->resultsCfg['status_label_for_exec_ui']['not_run'])) {
         $this->tc_status_for_statistics['not_run'] = $this->map_tc_status['not_run'];
     }
     $this->statusCode = array_flip(array_keys($this->resultsCfg['status_label_for_exec_ui']));
     foreach ($this->statusCode as $key => $dummy) {
         $this->statusCode[$key] = $this->resultsCfg['status_code'][$key];
     }
 }