How to discard changes on detached objects?

Macro · **Joined:** Sat Feb 10, 2007 12:18 pm **Posts:** 23

Hi

I am writng an eclipse RCP and my objects are detached most of the time. i only call an update when I want to save an object. But how can I reestablish the persistence from the database for a single, detached object? This would make my code much easier when the user discards the changes made to an object.

Thx

Macro · **Joined:** Sat Feb 10, 2007 12:18 pm **Posts:** 23

No one any idea? I thought it should be possible.

himawan · **Joined:** Sat Aug 19, 2006 6:31 pm **Posts:** 139

You can try a few things.

Look at the get, load, or refresh() methods of the session.

http://www.hibernate.org/hib_docs/v3/ap ... ssion.html

Macro · **Joined:** Sat Feb 10, 2007 12:18 pm **Posts:** 23

Thx. The load-method seems to be what I need but it gives me a strange result.

I have a Vehicle-Object with several Lists mapped as composite elements with lazy-loading = false.

When I call

Code:

vehicleObject = session.load(Vehicle.class, vehicleObject.getId());

the returned object only contains the id, all other attributes are empty and so are the lists?

I assumed that I get the complete Object from this method with all containing attributes.

Macro · **Joined:** Sat Feb 10, 2007 12:18 pm **Posts:** 23

I have to correct myself. The Lists are not empty, they are of the type PersistentList which has something to do with lazy.loading, but as I mentioned before I've set all my mappings with lazy="false"?

satsranchuser · **Posted:** Wed May 30, 2007 2:55 pm

session's clear method. If you are using any caching, evict method call of session helps.