Hi mxc,
could you post the exception stacktrace and the code snippet causing the
error? the one where you add the entity and the parent and persist them.
Simone
mxc wrote:
Hi all,
I have a simple node entity pretty much as follows
-------------------------------------------------
@Id
@GeneratedValue
private Integer id;
private String name;
@ManyToOne(fetch=FetchType.LAZY)
private Node parent;
@OneToMany(mappedBy="parent",fetch=FetchType.LAZY,cascade=CascadeType.ALL)
private ArrayList<Node> children;
------------------------------------------------
When trying to insert into this table with a new entity whose parent is
already in the table, i.e already has an id I get the errror
The generated value processing detected an existing value assigned to this
field: com.abc.Node.id. This existing value was either provided via an
initializer or by calling the setter method. You either need to remove the
@GeneratedValue annotation or modify the code to remove the initializer
processing.
I have verified, via step through debug, that the id for the new entity is
definitely null when persist is called. I have tried flushing the entity
manager but the error is thrown immedialtly upon persist. The parent field,
which is the self referencing field, does not have its cascadeType set so I
cannot see why openjpa is attempting to persist the entity again.
Any ideas?
thanks
--
Simone Gianni CEO Semeru s.r.l. Apache Committer
http://www.simonegianni.it/
