Question

我想在一个事务中将Object保存到数据库中。 Object有2个子对象和一个数组列表对象，数组列表中的每个对象都有自己的数组列表：

{
  "person": {
    "id": null,
    "personal_no": "555555555555555555"
  },
  "reservation": {
    "id": null,
    "personal_no": null,
    "status_id": null,
    "reservationDetail": [
      {
        "id": null,
        "status_id": null,
        "room_id": 44,
        "start_date": "2017-08-09T18:04:26.938Z",
        "end_date": "2017-08-09T18:04:26.938Z",
        "category_id": 64,
        "reservationPerson": [
          {
            "reservation_id": "123",
            "person_id": "5555555555555555551"
          },
          {
            "reservation_id": "123",
            "person_id": "5555555555555555552"
          }
        ],
        "reservationService": [
          {
            "reservation_id": "123",
            "person_id": "5555555555555555553"
          },
          {
            "reservation_id": "123",
            "person_id": "5555555555555555554"
          }
        ]
      },
      {
        "id": null,
        "status_id": null,
        "room_id": 44,
        "start_date": "2017-08-09T18:04:26.938Z",
        "end_date": "2017-08-09T18:04:26.938Z",
        "category_id": 64,
        "reservationPerson": [
          {
            "reservation_id": "123",
            "person_id": "5555555555555555556"
          },
          {
            "reservation_id": "123",
            "person_id": "5555555555555555557"
          }
        ],
        "reservationService": [
          {
            "reservation_id": "123",
            "person_id": "5555555555555555558"
          },
          {
            "reservation_id": "123",
            "person_id": "5555555555555555559"
          }
        ]
      }
    ]
  }
}

我想在一个事务中执行以下步骤并使用诺言： 1.1。保存人员和返回ID。 1.2。通过（1.1）返回ID到预订和返回预订ID。 1.3。将（1.2）返回的ID转换为reservationDetail保存并返回reservationDetail ID 1.3.1将（1.3）返回的ID传递给reservationPerson并保存。 1.3.2将（1.3）返回的ID传递给reservationService并保存。

现在这是我的代码，我被卡住了，我不知道如何继续。

pool.registerReservation = function (reservation) {
    return new Promise(function (resolve, reject) {
        pool.getConnection(function (err, connection) {
            var person = reservation.person;
            connection.beginTransaction(function (err) {
                if (err) {
                    reject(err);
                }
                connection.query('insert into person  (first_name,last_name,personal_no,email,gender,address,birthdate,phone)values (?,?,?,?,?,?,?,?)',
                    [person.first_name, person.last_name, person.personal_no, person.email, person.gender, person.address, person.birthdate, person.phone],
                    function (error, results, fields) {
                        if (error) {
                            if (error.code != 'ER_DUP_ENTRY') {
                                return connection.rollback(function () {
                                    console.log("person", error.code);
                                    reject(error);
                                });
                            }

                        }
                        connection.query('insert into reservation (create_date,person_no,status_id)values(current_timestamp,?,1)', [person.personal_no], function (error, results, fields) {
                            if (error) {
                                return connection.rollback(function () {
                                    console.log("reservation", error);
                                    reject(error);
                                });
                            }
                            var reservID = results.insertId;
                            var reservDetails = reservation.reservation.reservationDetail;

                            reservDetails.map(data => {

                                connection.query('insert into reservation_detail (reservation_id,create_date,room_id,status_id,start_date,end_date,payment_type,adult,child,additional_bed,payment_status)values(?,current_timestamp,?,?,?,?,?,?,?,?,?)',
                                    [reservID, data.room_id, data.status_id, data.start_date, data.end_date,
                                        data.payment_type, data.adult, data.child, data.additional_bed, data.payment_status],
                                    function (error, results, fields) {
                                        if (error) {
                                            return connection.rollback(function () {
                                                console.log("reservation_detail", error);
                                                reject(error);
                                            });
                                        }
                                        data.id = results.insertId;
                                        var id = results.insertId;

                                        data.reservationPerson.map(person => {
                                            connection.query('insert into reservation_person(reservation_id,person_id)values(?,?)',
                                                [id, person.person_id],
                                                function (error, results, fields) {
                                                    if (error) {
                                                        return connection.rollback(function () {
                                                            console.log("person", error.code);
                                                            reject(error);
                                                        });
                                                    }
                                                });
                                        });
                                        data.reservationService.map(service => {
                                            connection.query('insert into reservation_service (reservation_id, service_id,frequency, additional_comment)values (?,?,?,?)',
                                                [id, service.service_id, service.frequency, service.additional_comment],
                                                function (error, results, fields) {
                                                    if (error) {
                                                        return connection.rollback(function () {
                                                            console.log("service", error);
                                                            reject(error);
                                                        });
                                                    }
                                                });
                                        });
                                    });
                            });

                            connection.commit(function (err) {
                                console.log("commit");
                                if (err) {
                                    return connection.rollback(function () {
                                        console.log(err);
                                        reject(err);
                                    });
                                }
                                resolve("OK");
                            });
                        });
                    });
            });
        });
    });
}

Node JS MY SQL使用promise管理事务

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