WTF?

wtf.cs

public static string CreateFileName(string jobReference, string type, string user, string fileType)
{
    string documentName = string.Empty;
    string sql = "Select 'tfr_in'||:P_Job_Reference||:P_User_Id ||to_char(Sysdate, 'yyyymmddhh24miss')||'.'||lower(:P_Doc_Type) From Dual";
    List<framework.db.IDatabaseParameter> paramList = new List<framework.db.IDatabaseParameter>();
    paramList.Add(localClass.NewParameter(":p_job_reference", ParameterDirection.Input, DbType.String, jobReference));
    paramList.Add(localClass.NewParameter(":P_User_Id", ParameterDirection.Input, DbType.String, user));
    paramList.Add(localClass.NewParameter(":P_Doc_Type", ParameterDirection.Input, DbType.String, type));
    using (var connection = framework.db.DatabaseConnectionFactory.createDatabaseConnection(framework.db.DatabaseType.ORACLE))
    {
        connection.open();
        DataTable dt = connection.executeSelect(sql, CommandType.Text, paramList);
        if (dt != null && dt.Rows.Count > 0)
        {
            documentName = dt.Rows[0][0].ToString();
        }
    }
    return documentName;
}