File APIs for Java Developers
Manipulate DOC, XLS, PPT, PDF and many others from your application.
The moose likes Object Relational Mapping and the fly likes Hibernate Exception and Session closing Big Moose Saloon
  Search | Java FAQ | Recent Topics | Flagged Topics | Hot Topics | Zero Replies
Register / Login
JavaRanch » Java Forums » Databases » Object Relational Mapping
Bookmark "Hibernate Exception and Session closing" Watch "Hibernate Exception and Session closing" New topic

Hibernate Exception and Session closing

Zeki Karaca

Joined: Oct 02, 2009
Posts: 20
Hi @ all

I am learning Hibernate and there are 2 things that are still confusing for me. Take a look at my example code:

Question 1.
I read a lot of tutorials on the internet and also about the differences between getCurrentSession() and openSession(). I know that if i use openSession i need to manage the sessions myself and should also flush/close it. I used getCurrentSession in my example so i did not add a finally clause to close the session used. Is this correct or should i still close the session myself?

Question 2.
Almost all example codes on the internet show a similar structure with a try/catch clause. But getCurrentSession also throws a HibernateException so why should i not put this in the try clause and catch an exception. I know it is a runtime exception but beginTransaction, save and commit also throw the same exception. Why do i catch these and not the one for getCurrentSession?

Please could someone help me to clarify these 2 questions? Thanks in advance.

SCJA | SCJP 6.0 | ...
Zeki Karaca

Joined: Oct 02, 2009
Posts: 20
Please, is there anyone who can help me with these questions?
Zeki Karaca

Joined: Oct 02, 2009
Posts: 20
One last attempt...
JayaSiji Gopal
Ranch Hand

Joined: Sep 27, 2004
Posts: 303
Here is the code that i get:

with currentSession(), you dont need to close it manually. All of that is automatically taken care for you.

SCJP 1.4, SCWCD 1.4<br /> <br />Thanks in advance!<br />Jayashree.
I agree. Here's the link:
subject: Hibernate Exception and Session closing
It's not a secret anymore!