Control the order the tables have been created in jpa - mysql

Question

Does it exist a way to control the order in which the tables have been created by the persistence provider? I got this mysql 1146 error. I suppose it happens because it try to create an entity that needs for reservation table but it doesn't found it so this cause the following exception. Does exist a way to fix that?
Exception [EclipseLink-4002] (Eclipse Persistence Services - 2.5.0.v20130507-3faac2b): org.eclipse.persistence.exceptions.DatabaseException
Internal Exception: com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Table 'volaconnoi_db.reservation' doesn't exist
Error Code: 1146
Call: ALTER TABLE RESERVATION ADD CONSTRAINT FK_RESERVATION_ROUTE_ID_ROUTE FOREIGN KEY (ROUTE_ID_ROUTE) REFERENCES ROUTE (ID_ROUTE)
Query: DataModifyQuery(sql="ALTER TABLE RESERVATION ADD CONSTRAINT FK_RESERVATION_ROUTE_ID_ROUTE FOREIGN KEY (ROUTE_ID_ROUTE) REFERENCES ROUTE (ID_ROUTE)")
This is the USER_CREDENTIAL entity
#Entity
#Table(name = "USER_CREDENTIAL")
#SecondaryTable(name = "CLIENT", pkJoinColumns=#PrimaryKeyJoinColumn(name="USERNAME"))
public class UserCredential implements Serializable
{
private String username;
private String password;
private String email;
private String group_name;
private Date create_date;
private String name;
private String surname;
private String address;
private String city;
private String zip_code;
private String country;
private int fidelity_points;
private List<PhoneNumber> phoneNumbers;
private List<Reservation> reservationsList;
public UserCredential()
{
}
#Id
#Column(name = "USERNAME", nullable = false)
public String getUsername()
{
return username;
}
public void setUsername(String username)
{
this.username = username;
}
#Column(name = "PASSWORD", nullable = false)
public String getPassword()
{
return password;
}
public void setPassword(String password)
{
this.password = password;
}
#Column(name = "EMAIL", nullable = false)
public String getEmail()
{
return email;
}
public void setEmail(String email)
{
this.email = email;
}
#Column(name = "GROUP_NAME", insertable = false, updatable = false)
public String getGroup_name()
{
return group_name;
}
public void setGroup_name(String group_name)
{
this.group_name = group_name;
}
#Column(name = "CREATE_DATE", insertable = false, updatable = false)
#Temporal(TemporalType.TIMESTAMP)
public Date getCreate_date()
{
return create_date;
}
public void setCreate_date(Date create_date)
{
this.create_date = create_date;
}
#Column(name = "NAME", nullable= false, table="CLIENT")
public String getName()
{
return name;
}
public void setName(String name)
{
this.name = name;
}
#Column(name = "SURNAME", nullable= false, table = "CLIENT")
public String getSurname()
{
return surname;
}
public void setSurname(String surname)
{
this.surname = surname;
}
#Column(name = "ADDRESS", nullable= false , table = "CLIENT")
public String getAddress()
{
return address;
}
public void setAddress(String address)
{
this.address = address;
}
#Column(name = "CITY", nullable = false, table = "CLIENT")
public String getCity()
{
return city;
}
public void setCity(String city)
{
this.city = city;
}
#Column(name = "ZIP_CODE", nullable = false, table = "CLIENT")
public String getZip_code()
{
return zip_code;
}
public void setZip_code(String zip_code)
{
this.zip_code = zip_code;
}
#Column(name = "COUNTRY", nullable = false, table = "CLIENT")
public String getCountry()
{
return country;
}
public void setCountry(String country)
{
this.country = country;
}
#Column(name = "FIDELITY_POINTS", nullable = false, table = "CLIENT")
public int getFidelity_points()
{
return fidelity_points;
}
public void setFidelity_points(int fidelity_points)
{
this.fidelity_points = fidelity_points;
}
#ElementCollection
#CollectionTable(name = "CLIENT_PHONE_NUMBER", joinColumns = #JoinColumn(name = "USERNAME"))
public List<PhoneNumber> getPhoneNumbers()
{
return phoneNumbers;
}
public void setPhoneNumbers (List<PhoneNumber> phoneNumbers)
{
this.phoneNumbers = phoneNumbers;
}
#OneToMany(mappedBy = "username", cascade = CascadeType.ALL, fetch = FetchType.LAZY)
public List<Reservation> getReservationsList()
{
return reservationsList;
}
public void setReservationsList(List<Reservation> reservationsList)
{
this.reservationsList = reservationsList;
}
#Override
public int hashCode()
{
int hash = 0;
hash += (username != null ? username.hashCode() : 0);
return hash;
}
#Override
public boolean equals(Object object)
{
// TODO: Warning - this method won't work in the case the username fields are not set
if (!(object instanceof UserCredential))
{
return false;
}
UserCredential other = (UserCredential) object;
if ((this.username == null && other.username != null) || (this.username != null && !this.username.equals(other.username)))
{
return false;
}
return true;
}
#Override
public String toString()
{
return "it.volaconoi.entity.UserCredential[ id=" + username + " ]";
}
}
THIS IS THE ROUTE ENTITY
#Entity
#Table(name = "ROUTE")
public class Route implements Serializable
{
private String id_route;
private String airlane;
private String aircraft_id;
private Airport airport_city_source;
private Airport airport_city_dest;
private Date departure_date;
private Date arrival_date;
private String travel_class;
private int seats;
private float price;
private List<Reservation> reservationsList;
public Route()
{
}
#PrePersist
public void setIdRoute()
{
SimpleDateFormat sdf = new SimpleDateFormat("ddMMYYYYHHmm");
String format_departure_date = sdf.format(this.getDeparture_date());
String unique_id_route = this.getAirlane() +
this.getAircraft_id() +
this.getAirport_city_source().getCity() +
this.getAirport_city_dest().getCity() +
format_departure_date;
this.setId_route(unique_id_route.replaceAll(" ", ""));
}
#Id
#Column(name = "ID_ROUTE")
public String getId_route()
{
return id_route;
}
public void setId_route(String id_route)
{
this.id_route = id_route;
}
#Column(name = "AIRLANE", nullable = false)
public String getAirlane()
{
return airlane;
}
public void setAirlane(String airlane)
{
this.airlane = airlane;
}
#Column(name = "AIRCRAFT_ID", nullable = false)
public String getAircraft_id()
{
return aircraft_id;
}
public void setAircraft_id(String aircraft_id)
{
this.aircraft_id = aircraft_id;
}
#OneToOne(optional = false)
public Airport getAirport_city_source()
{
return airport_city_source;
}
public void setAirport_city_source(Airport airport_city_source)
{
this.airport_city_source = airport_city_source;
}
#OneToOne(optional = false)
public Airport getAirport_city_dest()
{
return airport_city_dest;
}
public void setAirport_city_dest(Airport airport_city_dest)
{
this.airport_city_dest = airport_city_dest;
}
#Column(name = "DEPARTURE_DATE", nullable = false)
#Temporal(TemporalType.TIMESTAMP)
public Date getDeparture_date()
{
return this.departure_date;
}
public void setDeparture_date(Date departure_date)
{
this.departure_date = departure_date;
}
#Column(name = "ARRIVAL_DATE", nullable = false)
#Temporal(TemporalType.TIMESTAMP)
public Date getArrival_date()
{
return arrival_date;
}
public void setArrival_date(Date arrival_date)
{
this.arrival_date = arrival_date;
}
#Column(name = "TRAVEL_CLASS", nullable = false)
public String getTravel_class()
{
return travel_class;
}
public void setTravel_class(String travel_class)
{
this.travel_class = travel_class;
}
#Column(name = "SEATS", nullable = false)
public int getSeats()
{
return seats;
}
public void setSeats(int seats)
{
this.seats = seats;
}
#Column(name = "PRICE", nullable = false)
public float getPrice()
{
return price;
}
public void setPrice(float price)
{
this.price = price;
}
#OneToMany(mappedBy = "route", cascade = CascadeType.ALL, fetch = FetchType.LAZY)
public List<Reservation> getReservationsList()
{
return reservationsList;
}
public void setReservationsList(List<Reservation> reservationsList)
{
this.reservationsList = reservationsList;
}
#Override
public int hashCode()
{
int hash = 0;
hash += (id_route != null ? id_route.hashCode() : 0);
return hash;
}
#Override
public boolean equals(Object object)
{
// TODO: Warning - this method won't work in the case the id_route fields are not set
if (!(object instanceof Route))
{
return false;
}
Route other = (Route) object;
if ((this.id_route == null && other.id_route != null) || (this.id_route != null && !this.id_route.equals(other.id_route)))
{
return false;
}
return true;
}
#Override
public String toString()
{
return "it.volaconoi.entity.Route[ id=" + id_route + " ]";
}
}
This is the RESERVATION entity
#Entity
#Table(name = "RESERVATION")
public class Reservation implements Serializable
{
private String id;
private int passengers;
private int luggages;
private float price;
private Date date_reservation;
private boolean cancelled;
private UserCredential username;
private Route route;
public Reservation()
{
}
#Id
#GeneratedValue(strategy = GenerationType.IDENTITY)
#Column(name = "ID_RESERVATION")
public String getId()
{
return id;
}
public void setId(String id)
{
this.id = id;
}
#Column(name = "PASSENGERS", nullable = false)
public int getPassengers()
{
return passengers;
}
public void setPassengers(int passengers)
{
this.passengers = passengers;
}
#Column(name = "LUGGAGES", nullable = false)
public int getLuggages()
{
return luggages;
}
public void setLuggages(int luggages)
{
this.luggages = luggages;
}
#Column(name = "PRICE", nullable = false)
public float getPrice()
{
return price;
}
public void setPrice(float price)
{
this.price = price;
}
#Column(name = "DATE_PLACED", insertable = false, updatable = false)
#Temporal(TemporalType.TIMESTAMP)
public Date getDate_reservation()
{
return date_reservation;
}
public void setDate_reservation(Date date_reservation)
{
this.date_reservation = date_reservation;
}
#Column(name = "CANCELLED", nullable = false)
public boolean isCancelled()
{
return cancelled;
}
public void setCancelled(boolean cancelled)
{
this.cancelled = cancelled;
}
#ManyToOne
#JoinColumn(name = "USERNAME", nullable = false)
public UserCredential getUsername()
{
return username;
}
public void setUsername(UserCredential username)
{
this.username = username;
}
#ManyToOne
#JoinColumn(name = "ID_ROUTE", nullable = false)
public Route getRoute()
{
return route;
}
public void setRoute(Route route)
{
this.route = route;
}
#Override
public int hashCode()
{
int hash = 0;
hash += (id != null ? id.hashCode() : 0);
return hash;
}
#Override
public boolean equals(Object object)
{
// TODO: Warning - this method won't work in the case the id fields are not set
if (!(object instanceof Reservation))
{
return false;
}
Reservation other = (Reservation) object;
if ((this.id == null && other.id != null) || (this.id != null && !this.id.equals(other.id)))
{
return false;
}
return true;
}
#Override
public String toString()
{
return "it.volaconoi.entity.Reservation[ id=" + id + " ]";
}
}
As you may see these three entities are related to each one

Answer 1

I believe this is an error so fixing this may make your problem go away. Then again this may be unrelated:
In Reservation, the type of id is String, but in getId() you specify GenerationType.IDENTITY. AFAIK MySQL doesn't support auto generation of string IDs but only integer IDs. Remove this and see if things work.
UPDATE:
I've reproduced the error on my machine, and this is indeed the problem. If you check your output you will find a warning (not an error) similar to:
[EL Warning]: 2014-06-20
15:47:46.224--ServerSession(1565614310)--Exception [EclipseLink-4002]
(Eclipse Persistence Services - 2.5.1.v20130918-f2b9fc5):
org.eclipse.persistence.exceptions.DatabaseException Internal
Exception: com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException:
Incorrect column specifier for column 'ID' Error Code: 1063 Call:
CREATE TABLE NEWENTITY (ID VARCHAR(255) AUTO_INCREMENT NOT NULL, NAME
VARCHAR(255), PRIMARY KEY (ID)) Query: DataModifyQuery(sql="CREATE
TABLE NEWENTITY (ID VARCHAR(255) AUTO_INCREMENT NOT NULL, NAME
VARCHAR(255), PRIMARY KEY (ID))")
I imagine you missed it because it's a warning and not an error. I also imagine this gets output as a warning and not an error because sometimes an error creating the table is not an issue (for example, if the table already exists). EclipseLink apparently isn't smart enough to handle cases where there is a true error, so it outputs as a warning (see "JPA sucks", above).
The EclipseLink/MySQL combination does not support a generation type of IDENTITY for String IDs. IDENTITY means that it's up to the database (and not the JPA implementation provider) to create the ID. MySQL only supports creating integer IDs so the column type must be integer if you use AUTO INCREMENT (see the generated code).
If you really want your IDs to be a String but also automatically generate an ID, then use a generation type of AUTO. AUTO means the JPA implementation provider will handle creating the IDs; EclipseLink will use a sequence table and will handle converting the values there to a String for you.