Hi Matt,
On 8 Sep 2007 at 2:35, Matt Raible wrote:
> The easiest solution is don't use Oracle. ;-) Or maybe use PostgreSQL
Sorry, I should have mentioned, I'm using PostgreSQL. I'll not start any
flame wars by talking about my opinion of Oracle...
> since that's very similar. In all seriousness, there should be an easy
> way to solve this problem, but I don't know it. There is a
> SequenceGenerator annotation - maybe that can be used somehow?
>
> @Id
> @SequenceGenerator(
> name="EMP_SEQ_GEN",
> sequenceName="emp_sequence"
> )
> @GeneratedValue(
> strategy = GenerationType.SEQUENCE,
> generator="EMP_SEQ_GEN"
> )
> public Integer getId() {
> return this.id;
> }
Those look like Oracle-specific sequences to me and it seems a shame to
have to put in stuff like that.
Maybe I'm misunderstanding the problem, but it seems to me that this
problem should affect all Databases - some data is inserted into tables
without updating the primary key generating system so if any of the keys in
your inserted data are less than the value in the primary key generating
system (hibernate_sequence in our case), you get a duplicate key error.
Since this seems to be a test-data problem I believe that's where the
solution should be located - ideally there'd be a way of updating the
sequence using an appropriate entry in the sample-data.xml file. I had a bit
of a scout around the DBUnit docco but unfortunately didn't see anything
that looked like an obvious candidate :-(
Is there a way of putting something into the relevant part of the pom.xml that
executes a HQL statement or something like that?
Meanwhile, I think I'll use the negative id idea mentioned in the discussion
following the JIRA entry: http://issues.appfuse.org/browse/APF-718
Cheers,
Rob Hills
Waikiki, Western Australia
Mobile +61 (412) 904-357
Fax: +61 (8) 9529-2137
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