Обновленный объект не отображается

Question

Это программа, которую я пишу в спящем режиме, чтобы обновить три поля в таблице emp в базе данных с именем java3 с использованием новой темы. Однако после обновления он не отображает правильную запись. Вместо этого он извлекает данные из кеша. Пожалуйста, порекомендуйте. session.refresh() не загружает объект из базы данных.

package mypack; 

import org.hibernate.*; 

public class Refresher { 

    public static void main(String[] args) { 
     System.out.println("Main Thread Started..."); 
     Session session = MyFactory.getSession(); 
     System.out.println("Loading entity with id 1..."); 
     Emp e = (Emp) session.get(Emp.class, 1); 
     System.out.println(e.getName() + "\t" + e.getJob() + "\t" 
       + e.getSalary()); 
     System.out.println("Starting a new Thread..."); 
     Thread th = new Thread() { 
      public void run() { 
       System.out.println("New Thread Started..."); 
       System.out.println("Modifying entity with id 1..."); 
       Session session = MyFactory.getSession(); 
       Emp e = (Emp) session.get(Emp.class, 1); 
       Transaction t = session.beginTransaction(); 
       e.setName("Kalpana Sharma"); 
       e.setJob("Yoga Instructor"); 
       e.setSalary(10000); 
       t.commit(); 
       session.close(); 
       System.out.println("Entity updated, new thread completed..."); 
      } 
     }; 
     th.start(); 
     System.out.println("Suspending main thread for 1 second..."); 
     try { 
      Thread.sleep(10000); 
     } catch (Exception ex) { 
     } 
     System.out.println("Main Thread resumed..."); 
     System.out.println("Refreshing the Entity..."); 
     //session.flush(); 
     //session.evict(e); 
     session.refresh(e); 
     System.out.println("Refreshed state of the entity..."); 
     System.out.println(e.getName() + "\t" + e.getJob() + "\t" 
       + e.getSalary()); 
     session.close(); 
     System.out.println("Main Thread Completed."); 
    } 
} 

Выход программы:

Loading entity with id 1... 
Hibernate: select emp0_.EmpId as EmpId1_0_0_, emp0_.name as name2_0_0_, emp0_.Designation as Designat3_0_0_, emp0_.salary as salary4_0_0_ from Emp emp0_ where emp0_.EmpId=? 
Anoop Sharma Software Engineer 35000 
Starting a new Thread... 
Suspending main thread for 1 second... 
New Thread Started... 
Modifying entity with id 1... 
Hibernate: select emp0_.EmpId as EmpId1_0_0_, emp0_.name as name2_0_0_, emp0_.Designation as Designat3_0_0_, emp0_.salary as salary4_0_0_ from Emp emp0_ where emp0_.EmpId=? 
Hibernate: update Emp set name=?, Designation=?, salary=? where EmpId=? 
Entity updated, new thread completed... 
Main Thread resumed... 
Refreshing the Entity... 
Hibernate: select emp0_.EmpId as EmpId1_0_0_, emp0_.name as name2_0_0_, emp0_.Designation as Designat3_0_0_, emp0_.salary as salary4_0_0_ from Emp emp0_ where emp0_.EmpId=? 
Refreshed state of the entity... 
Anoop Sharma Software Engineer 35000 
Main Thread Completed. 

Answer 1

Попробуйте изменить последовательность beginTransaction и get методов,

... 
public void run() { 
System.out.println("New Thread Started..."); 
       System.out.println("Modifying entity with id 1..."); 
       Session session = MyFactory.getSession(); 
       Transaction t = session.beginTransaction(); //first begin the transaction 
       Emp e = (Emp) session.get(Emp.class, 1);     
       e.setName("Kalpana Sharma"); 
       e.setJob("Yoga Instructor"); 
       e.setSalary(10000); 
       t.commit(); 
       session.close(); 
       System.out.println("Entity updated, new thread completed..."); 
      } 
...