Hi,

This is more of an advice question more than a problem. Here is my scenario:

- A web application with 2 users logged in...

- Both users have accessed the same object from the database after logging in at around the same time.

- User A decides to change the "status" parameter of the object.

- So now User B has incorrect data on his page as he hasn't refreshed the page yet.

- User B now decides to do the same and change the "status" parameter to something else.

This results in User B overwriting what User A specified initialy.

What can I do to combat this?

Versioning.

There are a few strategies described in chapter 11 I believe of the documentation. It's the classic concurrency web app issue.

Essentially, you tell your mapping file this object will be versioned. Then you add a <version> tag to it. The documentation describes it in more details and I know there are a few posts floating around here with more detail.