public void insert(Chat entity) {
        String query = "insert into chats (" + fields + ") values (?, ?, ?, ?, ?)";
        jdbcTemplate.execute(query, new PreparedStatementCallback<Object>() {
            @Override
            public Object doInPreparedStatement(PreparedStatement ps) throws SQLException, DataAccessException {
                ps.setObject(1, entity.getId());

                ChatType type = entity.getType();
                ps.setInt(2, type.ordinal());
                if (type == ChatType.GROUP) {
                    ps.setString(3, entity.getName().get());
                    ps.setObject(4, entity.getOwner().get());
                    ps.setInt(5, entity.getGroupChatVisibility().get().ordinal());
                }

                return null;
            }
        });
    }