Hibernate's Connection.transaction_repeatable_read misunderstanding

See Demo:

Package edu.test;

Import java.sql.Connection;
Import org.hibernate.Session;
Import Org.hibernate.SessionFactory;

Import org.hibernate.Transaction;
Import Edu.po.Users;

Import Edu.utils.HibernateSessionFactory; public class Transactionisolationtest {static Sessionfactory sessionfactory = Hibernatesessionfactory.getsessionfacto
	
	Ry ();
		public static void UpdateUser (int id, String password) {Session session = Sessionfactory.opensession ();
		Transaction Transaction = Session.begintransaction ();
			try{Users user = (users) session.get (Users.class, id);
			User.setpassword (password);
		Transaction.commit ();
		}catch (Exception e) {transaction.rollback ();
		}finally{Session.close ();
		}} public static void Testreadrepeat () {Session session1 = sessionfactory.opensession ();

		Session Session2 = Sessionfactory.opensession ();
			try{session1.connection (). Settransactionisolation (Connection.transaction_repeatable_read); Users user1 = (users) session1.get (Users.class, 6);

			System.out.println ("Session1" password= "+user1.getpassword ()");
			
			UpdateUser (6, "6");
			Session2.connection (). Settransactionisolation (Connection.transaction_repeatable_read);
			Users user2 = (users) session2.get (Users.class, 6);
		System.out.println ("Session2" password= "+user2.getpassword ()");
		}catch (Exception e) {e.printstacktrace ();
			}finally{Session1.close ();
		Session2.close ();
	}} public static void Main (String args[]) {testreadrepeat ();
 }

}

First, Session2.connection (). Settransactionisolation (Connection.transaction_repeatable_read); This line of code to make a breakpoint, and then debug, you can see the result:

Hibernate:select users0_.id as id0_0_, users0_.version as version0_0_, users0_.username as username0_0_, Users0_.passwor D as password0_0_ from Test.users users0_ where users0_.id=?
"Session1" password=8,version=10

Next, execute SQL on the database client and modify the password=9:

Update users Set Password = 9 where  id=6;

Finally, just debug the code, let it run down, but found that the results and the first get () get the same object .... ：

Hibernate:select users0_.id as id0_0_, users0_.version as version0_0_, users0_.username as username0_0_, Users0_.passwor D as password0_0_ from Test.users users0_ where users0_.id=?
"Session1" password=8,version=10
hibernate:select users0_.id as id0_0_, users0_.version as version0_0_, users0_. Username as username0_0_, Users0_.password as password0_0_ from Test.users users0_ where users0_.id=?
"Session2" password=8,version=10

Later, I thought about, in two times get () Get the Users table information between a modified password database operation, that is, the comment code//updateuser (6, "6");

Release the annotated UpdateUser code, then run the program, found two times get () get the object is not the same .... ：

Hibernate:select users0_.id as id0_0_, users0_.version as version0_0_, users0_.username as username0_0_, Users0_.passwor D as password0_0_ from Test.users users0_ where users0_.id=?
"Session1" password=9,version=10
hibernate:select users0_.id as id0_0_, users0_.version as version0_0_, users0_. Username as username0_0_, Users0_.password as password0_0_ from Test.users users0_ where users0_.id=?
Hibernate:update test.users set version=?, Username=?, password=? where id=? and version=?
Hibernate:select users0_.id as id0_0_, users0_.version as version0_0_, users0_.username as username0_0_, Users0_.passwor D as password0_0_ from Test.users users0_ where users0_.id=?
"Session2" password=6,version=11