hello!

I have a question. Imagine that I have a DB table with id(autoincrement), than some other columns. But one of that columns is unique.

I make new transient object (id = null) of this type. set all properties except id. than i want to save this object.

Is any way to tell hibernate to make following:

if in DB exist object with same value in that unique column make update.
if not make save.

thanks.

I don't see any way of doing this by an automagical way. I don't know any Hibernate feature for doing this.

The only one I can see is quite close to your needs would be setting a generator="assigned" class and use the unique column directly as the id. That could be one starting point for this case.