/**
* 获得 Watt_Db 对象
*
* @example
* //in tpm
* $db = Watt_Db::getDb("propel");
*
* //stand alone
* $db_cfg['hostspec'] = '10.0.0.15';
* $db_cfg['port'] = '3306';
* $db_cfg['username'] = '******';
* $db_cfg['password'] = '******';
* $db_cfg['database'] = 'DEV_tpm_watt';
* $db_cfg['charset'] = 'utf8';
* $db = Watt_Db::getDb($db_cfg);
*
* @return Watt_Db
*/
public static function getDb($con_name = "propel")
{
if (!self::$_db) {
self::$_db = new Watt_Db($con_name);
} else {
self::$_db->reconnect($con_name);
}
return self::$_db;
}
