public final getBy String columnName Object value try Connection con D

 public final T getBy(String columnName, Object value) {
        try (Connection con = Db.getConnection();
             PreparedStatement pstmt = con.prepareStatement("SELECT * FROM " + table()
                     + " WHERE " + columnName + " = ?" + (multiversion ? " AND latest = TRUE LIMIT 1" : ""))) {
            if(value instanceof Long){
                pstmt.setLong(1, (Long)value);
            }else if(value instanceof Boolean){
                pstmt.setBoolean(1, (Boolean)value);
            }else if(value instanceof String){
                pstmt.setString(1, (String)value);
            }
            return get(con, pstmt);
        } catch (SQLException e) {
            throw new RuntimeException(e.toString(), e);
        }
    }