JDBCTemplate set nested POJO with BeanPropertyRowMapper

Question

Given the following example POJO\'s: (Assume Getters and Setters for all properties)

class User {
    String user_name;
    String display_name;
}

class Mes         


        

Answer 1

Perhaps you could pass in a custom RowMapper that could map each row of an aggregate join query (between message and user) to a Message and nested User. Something like this:

List messages = jdbcTemplate.query("SELECT * FROM message m, user u WHERE u.message_id = m.message_id", new RowMapper() {
    @Override
    public Message mapRow(ResultSet rs, int rowNum) throws SQLException {
        Message message = new Message();
        message.setTitle(rs.getString(1));
        message.setQuestion(rs.getString(2));

        User user = new User();
        user.setUserName(rs.getString(3));
        user.setDisplayName(rs.getString(4));

        message.setUser(user);

        return message;
    }
});