Open Session in View - Error in commit

shantanu · **Joined:** Tue May 09, 2006 4:54 am **Posts:** 13

Hello,

We are using Open Session in View pattern in our application. We have been so far successful in using it. But now I am facing following problem.

Since we are committing transaction after doFilter method, the response is rendered for user by the time we commit. Now if we get exception during commit and rollback transaction, I do not know how we can inform the users of this exception.

Can someone please let me know how can we do this?

Thanks

Shantanu

brazbro · **Joined:** Thu Sep 21, 2006 12:30 pm **Posts:** 2

The page describing the open sesson in view pattern has this caveat:

Quote:

Since the Session is flushed after the view has been rendered, database exceptions might occur after a successful output has been generated. If you use plain JSP and servlets the page output will be rendered into a buffer, usually 8K. If the buffer is full, it is flushed to the client browser! So, your user might see a successful page (200 OK) but in fact an exception occurred. To avoid this, don't render into the servlet engine buffer or increase the buffer size to a safe value. Most web frameworks avoid this issue by not rendering into the standard servlet engine buffer, but into their own.

http://www.hibernate.org/43.html

shantanu · **Joined:** Tue May 09, 2006 4:54 am **Posts:** 13

Thanks for pointing out.

Shantanu