I have an enity entityA which I extract from the database using a finder.
I update enityA then put it back in the database calling entityA.merge() instead of entity.persist()

Is this correct so far. If so at least I am on the right tack on how to update a persisted enity.

But enityA also has a relationship with another enity enityB

entityA has many to one relationship with entityB

When enityA is updated or created enityB is as well.

in my enityA I have the following annotations

@ManyToOne (cascade = {CascadeType.PERSIST,CascadeType.MERGE})
@JoinColumn(name = "entity_b_id")
private EntityB entityB;


But when I run entityA.merge() I get two entityAs the old one an the updated enityA as a new row.

Cheers for any help

Do you do this after closing and then re-opening a Hibernate Session?