Hi,
I am working on an complex object graph in a detached session.
I need to associate already saved object more than once in this graph because of multiple user interaction. So evertime i get a new from database with different java identity but same database identity. Now i want to save this object graph by opening a new session . In this case it gives UniqueObject exception, object with same identifier is already attached with the session.

How can i save this object graph. Any pointers will be helpful

Regards
Mukesh

Hibernate version : 2.1.4

I'm not sure what you are trying to do, but you can't have more than one instance in the same session representing the same row in the database.

If you retrieve the same row multiple times in the same session you do not get multiple instances - Hibernate will return you the same object.

Can you explain more clearly what you are trying to acheive? Examples may help.


Kevin Hooke

Hi,
Suppose I have an object hierarchy A- B - C -D where A is top level Object. The process of attaching some already saved auxillary object happens in multiple user interaction. The Object is saved on save event at the end of this interaction where we fire fire save on Object A so the whole hierarchy gets saved.

Suppose i have already saved object X attached to B. If i try to attach the same object to D.

A-B-C-D
| |
X X

Since this happens in different interaction i have no clue that X is already attched to A. So i fetch a new object of X and attach it to D.
I cannot even reove mapping of X in A as X can be already saved object or new Object
Hope this clarifies the problem.

Note: In this case hibernate session does not span multiple user interaction i.e. for each hibernate call we open & close the session


Regards
Mukesh