Hi Eivind, Wouter,
I originally thought the same thing Wouter as far as the AUTO only being
an Integer or a Long, however that is not always the case. I do have
one test application that uses the 'GUID' pattern where the
auto-generated (although application-supplied in this scenario) key is
actually a String. GUID is something like the server name, the time,
and the network address hashed together in a 32-bit char, can't remember
exactly, but is a use-case for GENERATOR-type that is a String.
Having said that, the GUID pattern is probably a new GENERATOR type not
yet defined and does not match the definitions provided for these types
(including the AUTO type):
http://www.caucho.com/resin-3.0/ejb3/cmp-table.xtp
* NONE - no auto generation for this field
* IDENTITY - the database supplies the new key, e.g. auto_increment,
SERIAL, or IDENTITY
* SEQUENCE - use a SEQUENCE type to generate the key
* TABLE - use a @TableGenerator for the key
* AUTO - choose the generator based on the database
o MySQL - IDENTITY using auto_increment
o Resin - IDENTITY using auto_increment
o Postgres - SEQUENCE
o Oracle - SEQUENCE
So, from a more educated standpoint, AUTO is designed to be underneath
only IDENTITY/SEQUENCE, so yes, AUTO *should* only work if the field is
an Integer/Long (unless SEQUENCE can also handle others).
Regardless, is there something I can put in the preference file to set
the per-table generator to NONE? If not, I'll start poking around to
figure it out and commit it back.
-D
> Hey,
>
> I'll be adding functionality to choose generator type for
> each table. From the spec, the available types are these 5:
>
> public enum GeneratorType { TABLE, SEQUENCE, IDENTITY, AUTO, NONE };
>
> Right now it's hardcoded with the AUTO option.
>
> Cannot String primary keys be auto-generated? Guess we could
> make that a default option?
>
> Generator type will be available i the GUI and preferences.
> I'll try to get a first version out during this week.
>
> .eivindw
>
> > Yes,
> >
> > Modify the velocity template to only generate this XDoclet tag when
> > the primairy key is either a Long or Interger. That is the way its
> > supposed to be anyways imho :)
> >
> > Regards, wouter
> >
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