IdentifierGenerationException help

javagirl779 · **Joined:** Thu Nov 13, 2003 4:19 pm **Posts:** 4

I am using Spring with Hibernate (and struts) and I have the following issue.

When i try to save i get this:

net.sf.hibernate.id.IdentifierGenerationException: ids for this class must be manually assigned before calling save():

this seems to be the line of code its failing on

getHibernateTemplate().save(to);

when i print out object to (one line ahead of it, all its values are set)
any hints?

thank you in advance

nerotnt · **Joined:** Wed Oct 08, 2003 10:31 am **Posts:** 247

Are you using composite-id's?
I had this problem when I had a composite-id os Long's. If that's the situation, you just need to assign the values.

Regards.

javagirl779 · **Joined:** Thu Nov 13, 2003 4:19 pm **Posts:** 4

I am not using composite pks. its "assigned" (merely a string)
it seems like it should be simple. but i don't see anyone else having this issue (nor does it seem to be in the docs or FAQ), and i am not certain what i am doing wrong?

anyone?

thanks!!!!

gavin · **Posted:** Fri Nov 14, 2003 8:39 pm

If you use "assigned" id generation, you must manually initialize the identifier property. (Make sure you don't have abroken get/set pair.)

With this kind of problem it is easiest to put the Hibernate sourcecode in your sourcepath and step to the exception in your debugger.

javagirl779 · **Joined:** Thu Nov 13, 2003 4:19 pm **Posts:** 4

ok, i put the source in with breakpoints and did my jpda.
it still throws the exception. which (to me) means that the problem probably is with spring & the way i am getting the template setup.

i tried to put spring source into path too, but that seems to have tons of dependencies that are not in my project (j2ee, aop, etc)

any hints on that?

fbaggins1983 · **Joined:** Sun Nov 16, 2003 11:44 am **Posts:** 7

How would one "manually initialize the identifier property"
of a manually assigned id (user defiend PK) form a many to one (one way) relationship.

because i can't get rid of this message on update

ids for this class must be manually assigned before calling save()

it should be easy, what am i missing?

(oh i am using spring) (hibernateTemplate)

thanks in advance

-Fred

fbaggins1983 · **Joined:** Sun Nov 16, 2003 11:44 am **Posts:** 7

if this values would be loaded thru a many to one, why should its id need to be set? its loaded?

can someone explain this to me?

thank you very much

-F

emmanuel · **Posted:** Fri Nov 21, 2003 3:46 am

Code:

Parent p = new Parent();
p.setId("myId"); //manually assigned
Child c = new Child();
c.setId("myChildId); //manually assigned
c.setParent(p);
...
session.save(p);
session.save(c); 
session.flush();