Hello,
I have some simple entities with ID annotated as:
| @Entity
| @Table(name="MY_TABLE")
| public class MyEntity {
| private Long id;
|
| @Id @GeneratedValue
| @Column(name="ID")
| public Long getId() {
| return id;
| }
|
| public void setId(Long id) {
| this.id= id;
| }
| }
|
When I try to create a new entity and set its ID manually I get an exception,
here's a sample code:
| MyEntity my = new MyEntity();
| my.setId(new Long(4));
| my.setSomeMoreMethods(...)
| ..
| em.persist(my);
|
I get the following exception
23:02:31,281 FATAL [application] Failed to perform the operation, failure
message: javax.persistence.PersistenceExceptio
n: org.hibernate.PersistentObjectException: detached entity passed to persist:
velo.entity.ActionLanguage
javax.faces.el.EvaluationException: Failed to perform the operation, failure
message: javax.persistence.PersistenceExcep
tion: org.hibernate.PersistentObjectException: detached entity passed to
...
Why is that? The entity is NOT detached, it never got persisted, and I would
like to set the ID manually sometime before persisting...
btw: If I invoke em.merge(my); it works, but it persist the object with new IDs
So, is that possible? with TopLink it wasn't a trouble,
Thanks,
Asaf.
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