AFAIK it's always falls back into the table-based identity generation. I tried
to find any docs about that, but couldn't. Do I googled for "site:java.net
GenerationType.AUTO table" and one of the 1st items came up this blog:
http://weblogs.java.net/blog/bleonard/archive/2006/12/need_a_primary.html
that under #5 shows that TopLink indeed generates table named "SEQUENCE".
There are plenty of other forums and blogs that you can look at ;).
thanks,
-marina
Witold Szczerba wrote:
> 2007/3/22, Marina Vatkina <Marina.Vatkina_at_sun.com>:
>
>> [...]
>> Bad news: the spec allows (unfortunately IMHO) to treat
>> GenerationType.AUTO in
>> any way a provider wants and TopLink Essentials uses table-based
>> generation for
>> this setting.
>
>
> Well, you were right, TopLink does use table-based generation, but now
> I do not understand why both table-based generation and sequence-based
> generation alter something called "sequence" in the database... I can
> see that sequence in Oracle's object browser, but there is a table
> called "SEQUENCE" as well, I am confused :/
>
> Or maybe this is only in Oracle, that table-based identity generation
> (whatever does "table-based" means) use sequence anyway...
>
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