Version attribute not refreshed in my Object

jc_egea · **Joined:** Tue Dec 19, 2006 12:55 pm **Posts:** 27

Hi all,

I have an object with a version attribute, i have also a version tag in my hbm mapping file. If i run the code:

Code:

AObj someObj= // already populated before;

AObj merged= (AObj) session.merge(someObj);
session.saveOrUpdate(merged);
session.flush();

The version column is updated correctly in my table, but not in my "someObj" object, so i'm forced to add this line in order to get my object updated.

Code:

BeanUtils.copyProperties(merged, someObj);

Is this the right solution for this issue?

Thanks in advance.

jc_egea · **Joined:** Tue Dec 19, 2006 12:55 pm **Posts:** 27

Hi again, any response for this question? Thanks in advance

mmerder · **Posted:** Wed Feb 18, 2009 1:05 pm

Why don't you just do something like:

Code:

someObj= // already populated before;

someObj= (AObj) session.merge(someObj); 

Is it because you want to keep references to this object? In that case try session.refresh(someObj) after you have flushed the session.

victor.cardona · **Joined:** Fri Feb 13, 2009 1:46 pm **Posts:** 9

I'm not sure I understand your question. Are you saying that "merged" is not having it's version updated? "someObj" should not be used again after calling session.merge(). "someObj" is never associated with the session, and will not have it's version updated.

jc_egea · **Joined:** Tue Dec 19, 2006 12:55 pm **Posts:** 27

So after saveOrUpdate, i should forget "someObj" and start working with the "merged" object instead, isn't it?

Thanks

mmerder · **Posted:** Thu Feb 19, 2009 5:41 am

Yes, merge returns a merged instance of your entity, it does not reattach the current object, it copies it's state to a managed instance.

Notice that the version number is not incremented immediately after calling merge(), because on session.merge() the state of the object is not flushed to the database, so the version number is not incremented.
The number is updated after flushing the session.