hibernate session.save() does not reflect in database

Question

According to my understanding in hibernate (please confirm)

1- You have to session.close() if you get it by getSessionFactory().openSession()

Answer 1

Whenever you carry out any unit of work on the database objects, Transactions have to be used. http://docs.jboss.org/hibernate/orm/4.0/hem/en-US/html/transactions.html shows why they are used and how they can be used. But, the key is to use a transaction object by calling session.beginTransaction() which returns a Transaction object. This will represent the unit of work carried out to the database.

Answer 2

When you create session using SessionFactory.openSession(), no transaction is created, so your operations are executed outside of transaction context. In order to see your changes, you have to start a new transaction, or perform your operations as a part of ongoing transaction. From documentation:

A typical transaction should use the following idiom:

Session sess = factory.openSession();
 Transaction tx;
 try {
     tx = sess.beginTransaction();
     //do some work
     ...
     tx.commit();
 }
 catch (Exception e) {
     if (tx!=null) tx.rollback();
     throw e;
 }
 finally {
     sess.close();
 }

Answer 3

You forgot to commit .You should to commit.

session.save(ac);
// you should to add this bottom line  
session.getTransaction().commit();

Answer 4

Whenever Your are doing save(), Always commit the transaction once done.

Account ac =new account()
ac.insert(123);
----------
----------
----------
----------
session.save(ac);

// Add this bottom line  
session.getTransaction().commit();

Answer 5

Yeah session.save is not saved to database without have the transaction. Only way to do it is by using the

<property name="connection.autocommit">true</property>

If this property is used you no need transaction and also you do not need session.flush() or session.close()

Answer 6

I found I had to flush and then refresh the DAO, and then it worked.

session.flush()
session.refresh(entityDAO)