Question

I have a DB table with id as primary key.
In the object I have define the colomn getter using @Id
When the user creates a new row it does assign it a new Id.
but it also assign a new id to the old object.

thus,
when I iterate a list using

for(){
    session.save(myO);
}

I get new rows in the db for the new elements but also new rows for the old ekements.
Any assistance?
Thanks.

Answer 1

The javadoc says:

Persist the given transient instance, first assigning a generated
identifier.

You should call save on an existing, detached instance. save is to persist a new entity. Use saveOrUpdate or merge.