私には2つの方法があります:
public static Ticket issueTicket(User user,Service service,String[] seats) {
Session ticSess= DB.factory.openSession();
ticSess.beginTransaction();
Date d= new Date();
Ticket ticket=new Ticket(d, service, user);
ticSess.save(ticket);
ticSess.getTransaction().commit();
int seatCount=seats.length;
for (int i=0;i<seatCount;i++){
int seatID=Integer.parseInt(seats[i]);
Seat seat=getSeatByID(seatID);
seat.setTicket(ticket);
ticSess.update(seat);
}
return ticket;
}
と、
public static Seat getSeatByID(int seatID) {
Session proSess = DB.factory.openSession();
proSess.beginTransaction();
Seat c = (Seat) (proSess.load(Seat.class, seatID));
proSess.getTransaction().commit();
return c;
}
issueTicketメソッドを呼び出すと、次のようになります。
illegally attempted to associate a proxy with two open Sessions
getSeatByIDメソッドでセッションを閉じると、セッションが閉じられたことを示す別のエラーが発生します。スタックトレースは次のとおりです。
at org.hibernate.proxy.AbstractLazyInitializer.initialize(AbstractLazyInitializer.java:164)
at org.hibernate.proxy.AbstractLazyInitializer.getImplementation(AbstractLazyInitializer.java:285)
at org.hibernate.proxy.pojo.javassist.JavassistLazyInitializer.invoke(JavassistLazyInitializer.java:185)
at ir.ac.shirazu.cse.Terminal.Seat_$$_javassist_9.setTicket(Seat_$$_javassist_9.java)
at ir.ac.shirazu.cse.Database.DB.issueTicket(DB.java:231)