This looks good, but in my case I can't annotate the classes. Is
there a way to specify this via XML or a property?
-dain
On Feb 1, 2007, at 11:42 AM, Patrick Linskey wrote:
Yes, you can do this:
http://incubator.apache.org/openjpa/docs/latest/manual/
manual.html#ref_g
uide_pc_oid_datastore
-Patrick
--
Patrick Linskey
BEA Systems, Inc.
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-----Original Message-----
From: Dain Sundstrom [mailto:[EMAIL PROTECTED]
Sent: Thursday, February 01, 2007 10:55 AM
To: open-jpa-dev@incubator.apache.org
Subject: Unknown primary key
Does JPA or OpenJPA have support for what is called unknown primary
key in the EJB CMP 2.0 spec. An unknown primary key is the pk of an
entity bean that does not have a field (or abstract getter/setter)
for a primary key. Instead the framework adds a virtual
field to the
bean that contains the primary key. The bean can get access to the
primary key instance calling "Object
EntityContext.getPrimaryKey()".
Typically, the unknown primary key is implemented using database
identity and a java.lang.Long.
I can add a real field to the class via byte code transformation for
CMP1 entity beans, but would perfer not to. For CMP2, I'm already
generating a subclass so I already have a place to put the field.
Thanks,
-dain
