/**
* Get the singleton instance
*
* @return BizDataObj_SQLHelper BizDataObj_SQLHelper object
*/
public static function instance()
{
if (self::$_instance == null) {
self::$_instance = new BizDataObj_SQLHelper();
}
return self::$_instance;
}
/**
* Get SQL helper
*
* @return BizDataObj_SQLHelper
*/
protected function getSQLHelper()
{
return BizDataObj_SQLHelper::instance();
}