Reputation: 94
I managed to let hibernate increment the id of every table by 1 by putting this into every entity class.
@Entity
public class TestObject implements Serializable{
@Id
@GeneratedValue(strategy = GenerationType.SEQUENCE, generator="idgen")
@SequenceGenerator(
name="idgen",
sequenceName="testobject_seq",
allocationSize=1,
initialValue=1
)
I have two tables which i fill with data manually through the Oracle SQL Developer. After i created the tables.
<property name="hibernate.hbm2ddl.auto">create</property>
For the 2 tables with data in it i set the initialValue to what i need. For instance, table testchamber has 22 rows with data. So my annotation changes to this:
@Id
@GeneratedValue(strategy = GenerationType.SEQUENCE, generator="idgen")
@SequenceGenerator(
name="idgen",
sequenceName="testchamber_seq",
allocationSize=1,
initialValue=23
)
But when i try to save a new testChamber entity i get this error.
org.hibernate.NonUniqueObjectException: A different object with the same identifier value was already associated with the session
I could save my entity without a problem before i changed the annotation but with the old annotation hibernate incremented the id randomly. For instance, hibernate gave a new entity the id 60, 61 instead of 23, 24 and so on..
This was my old annotation:
@Id
@GeneratedValue(strategy = GenerationType.SEQUENCE)
Upvotes: 0
Views: 2624
Reputation: 94
This post helped me with my problem "link". But the anser from @nolexa is correct, not from Alex Gitelman which is actually checked as correct. I put this
<property name="hibernate.id.new_generator_mappings">true</property>
into my hibernate.cfg.xml file and all my created sequences work fine now. Thank you very much @nolexa!!
Upvotes: 1