Is there any way to configure the behavior of the saveOrUpdate method, to update in the db only the non-null properties of the object to be saved??

Thank you.

The FAQ has a number of entries on saveAndUpdate

http://hibernate.bluemars.net/116.html

I read it and there isn't any entry that explain what I need to do.
I don't have any exception or so, just a question on how to do something.

Thank you anyway.

Have a look at the dynamic-update attribute of the class element in the hibernate mapping file documentation, I think that is what you are looking for

I read it also... the dynamic-update (as I understand it) is to update only the properties that changes, and in my case the property image changes, from a byte[] to null, but I don't want to update if this property is null...

Not nicely. This could be implemented using either a UserType or an Interceptor.

UserType would be nice because it could be specific to that field. However, you'd have to come up with a way to "know" the current db value since UserType is simply given a PreparedStatement to populate with parameter value(s). But at that point the given column would be included in the PreparedStatement.

The Interceptor approach would work as long as you are not trying this with a detached object. Here, just implement the onFlushDirty() method and move the appropriate value from previousState array to the currentState array if the value in the currentState array is null.

thank you steve!
Do you know where can I find documentation on this topics?