Hey,
I think I have a very basic confusion regarding cascade,
I have the following simple relationship:
| public class message {
|
| private Set<Comment> comments;
|
| @OneToMany(mappedBy = "message", fetch = FetchType.EAGER, cascade =
CascadeType.ALL)
| public Set<MessageComment> getComments() {
| return comments;
| }
|
| //set...
| }
|
And
| private Message message;
|
| @ManyToOne(optional=false)
| public Message getMessage() {
| return message;
| }
|
| //setter
|
I'm trying to persist a new comment by:
| //assuming a message with id 1 exists in db
| Message m = entityManager.find(Message.class,new Long(1));
| Comment c = new Comment();
| c.setMessage(m);
| m.getComments.add(c);
| entityManager.merge(m);
|
I don't want to persist the comment directly but through the message,
if 'getComments' is cascaded with ALL, shouldn't the new comments get persisted
when em.merge(m) is invoked?
Thanks,
Asaf.
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