Hey,
The thing is I don't have a transaction. And, I also am using
IdentityType.Datastore, as I need the id to be generated by the
datastore.
Anyway, this is what I currently have (and doesn't properly work):
@PersistenceCapable(detachable="true")
@Embeddable
public class GMeeting
{
...
/** The id. */
@PrimaryKey
@Persistent(valueStrategy = IdGeneratorStrategy.IDENTITY)
private Long id;
...}
and the using code:
{
....
meeting=new Meeting();
//Adding the new meeting
pm.makePersistent(meeting);
meeting=pm.detachCopy(meeting);
Long meetingID=meeting.getId();
....}
Anyway, this still doesn't work. Do I need to use a transaction?
Thanks,
Cosmin
On Oct 23, 2:09 am, "A. Stevko" <[email protected]> wrote:
> In order to make the object accessible after the commit() you need to make
> it detatchable.
>
> @PersistenceCapable(identityType = IdentityType.APPLICATION,
> detachable="true")
> public class Meeting
>
> Then used this...
> pm.makePersistent(meeting);
> Long meetingID=meeting.getId();
>
> On Fri, Oct 22, 2010 at 3:19 PM, Cosmin Stefan <
>
> [email protected]> wrote:
> > And I really want to emphasize that this doesn't happen EVERY time.
>
> > Thanks and sorry for replying again!
>
> > On Oct 23, 1:17 am, Cosmin Stefan <[email protected]>
> > wrote:
> > > Hey,
>
> > > Unfortunately, the first solution you suggested does not work and I
> > > don't really need a transaction for what I want.
>
> > > The thing is that I somehow need to persist the new entity and find
> > > out it's key. How can I do this? Does anybody have an ideea?
>
> > > Thanks a lot,
> > > Cosmin
>
> > > On Oct 22, 9:18 am, Ian Marshall <[email protected]> wrote:
>
> > > > Have you tried replacing
>
> > > > pm.makePersistent(meeting);
> > > > Long meetingID=meeting.getId();
>
> > > > with
>
> > > > meeting = pm.makePersistent(meeting);
> > > > Long meetingID=meeting.getId();
>
> > > > and see if this solves your problem. You might also want to commit
> > > > your transaction if you are doing this persistence in a transaction
> > > > before testing your meeting's ID (the ID might not get allocated until
> > > > transaction committal).
>
> > > > On Oct 20, 11:19 pm, Cosmin Stefan <[email protected]>
> > > > wrote:
>
> > > > > Hey,
>
> > > > > I have encountered a weird case while trying to create a new entity
> > in
> > > > > the database:
>
> > > > > I have this code:
>
> > > > > Meeting meeting=new Meeting(...)
> > > > > pm.makePersistent(meeting);
> > > > > Long meetingID=meeting.getId();
>
> > > > > if(meetingID==null)
> > > > > throw new Exception("meetingID is null...");
>
> > > > > and in the Meeting Class:
> > > > > /** The id. */
> > > > > �...@primarykey
> > > > > �...@persistent(valueStrategy = IdGeneratorStrategy.IDENTITY)
> > > > > private Long id;
> > > > > so the id is Long.
>
> > > > > The problem is that sometimes the above code throws an exception,
> > some
> > > > > other times it doesn't... What am I doing wrong?
>
> > > > > Thanks!
>
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