Java Hibernate save an object and update a different object using the same session in the same transaction only update and not save

Question

What I'm trying to do is when the customer order a product the order will be save to the DB and that product will be updated.

Session session = factory.openSession();
Transaction t = session.beginTransaction();

        try {
            session.update(product);
            session.save(order);
            t.commit();
        }
        catch (Exception e) {
            t.rollback();
        }
        finally {
            session.close();
        }

The product and the order are 2 different object type. I got no exception when running this code but only the product got updated, the order was not saved.

Sorry for my bad English.

It's possible that I'm missing context here. How are your entities configured? Are they related to the same data source, or at least, same transaction manager? Can you attach the entities involved and hibernate configuration to your question? — dliber
– dliber, Commented Nov 14, 2019 at 11:42

dliber · Accepted Answer · 2019-11-14 08:22:13Z

1

You probably forgot to start your transaction, by not calling the t.begin method. Also, there are some problems with your try-catch statement, since the factory.openSession and session.beginTransaction should be inside the try block, since both can raise exceptions. Try the following example code:

Session session = null;
Transaction t = null;

try {
  session = factory.openSession();
  t = session.beginTransaction();
  t.begin()

  session.update(product);
  session.save(order);

  t.commit();
}
catch (Exception e) {
  if (t != null) {
    t.rollback();
  }
}
finally {
  if (session != null) {
    session.close();
  }
}

answered Nov 14, 2019 at 8:22

dliber

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2 Comments

Thạch Hải Đăng Over a year ago

Sorry still not work, when I add the t.begin() both update and save not work but still no exception.

Thạch Hải Đăng Over a year ago

without t.begin() and run only update or save it work, but with both of them only the update work. product and order has 2 different types (product's type is Product and order's type is Order)

Ahmed HENTETI · Accepted Answer · 2019-11-14 08:03:03Z

0

Usually I use persist for saving new entries to the database.

By the way, I encourage you to use the try-with-resource to avoid adding the finally block at the end

answered Nov 14, 2019 at 8:03

Ahmed HENTETI

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1 Comment

user11416547 Over a year ago

@Thạch Hải Đăng What you mean by the product will be updated. If you have a List of products in the Customer you need the proper mapping also you need to add the product to the list and then save the customer.

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