From: "deepak raut" <deepak.raut77(a)gmail.com&gt; To: hibernate-dev(a)lists.jboss.org Sent: Tuesday, August 19, 2014 4:11:00 AM Subject: Re: [hibernate-dev] Unexpected behavior for @PrePersist/@PreUpdate callback when using EntityManager#merge() on transient object Forgot to mention :- in case of calling persist(), hibernate doesn't invoke callback method with copy object but the actual object passed to persist(); so for persist() it works correctly. On Tue, Aug 19, 2014 at 4:20 PM, deepak raut <deepak.raut77(a)gmail.com&gt; wrote: > I have an entity class like - > > public class Item { > @Id > //mapping > private Long id; > > @ElementCollection > //mapping > private Set<ItemWrapper> wrapperSet; > > @Transient > private Map<Item, Boolean> itemPredecessor; > > .......... > .......... > > @PrePersist > @PreUpdate > private void populateSet() { > wrapperSet.clear(); > for(Map.Entry<Item, Boolean> entry : itemPredecessor.entrySet()) { > wrapperSet.add(...); > } > > } > .............. > } > > What happens is when I call entityManager.merge(...) with newly > instantiated object with itemPredecessor map having some entries in it. > Hibernate invokes callback method populateSet() with copy of instance > passed to merge() which doesn't contain itemPredecessor map with respective > entries as itemPredecessor is marked @Transient. I am using hibernate > 4.3.5. Is this the right behavior? > > -- > Regards, > Deepak A. Raut > -- Regards, Deepak A. Raut _______________________________________________ hibernate-dev mailing list hibernate-dev(a)lists.jboss.org https://lists.jboss.org/mailman/listinfo/hibernate-dev