> I guess that being able to do this is technically a bug in > OpenJPA, but please don't fix it!
To ensure that this doesn't change (at least without an option to remain compatible), it'd be useful if you could create a test case that asserts this capability. Also, as with any bulk update, remember that the EntityManager-level cache is bypassed in this scenario. -Patrick -- Patrick Linskey BEA Systems, Inc. _______________________________________________________________________ Notice: This email message, together with any attachments, may contain information of BEA Systems, Inc., its subsidiaries and affiliated entities, that may be confidential, proprietary, copyrighted and/or legally privileged, and is intended solely for the use of the individual or entity named in this message. If you are not the intended recipient, and have received this message in error, please immediately return this by email and then delete it. > -----Original Message----- > From: roger.keays [mailto:[EMAIL PROTECTED] > Sent: Tuesday, February 20, 2007 11:51 PM > To: open-jpa-dev@incubator.apache.org > Subject: Re: [VOTE] change primary key value? > > > Hi Craig, > > Thanks for the reply. > > Craig L Russell wrote: > > > >> Is there a way to change the primary key of an entity in > OpenJPA? The > >> expection below doesn't fill me with hope... > > > > The JPA specification 2.1.4 says that the application must > not change > > the value of a primary key, but the specific behavior is > not defined. > > So OpenJPA is spec compliant. > > > That's what I was worried about. Actually, I was able to implement the > behaviour I needed by using a bulk UPDATE to change the key, > and making sure > the foreign keys were set up correctly (i.e. CASCADE). I > guess that being > able to do this is technically a bug in OpenJPA, but please > don't fix it! > > > > That said, there are cases I've seen where changing a > primary key is > > useful. So I would not oppose a proposal to add the feature > to OpenJPA. > > > > By the way, JDO doesn't prohibit it; there is a specific optional > > feature to allow this. But an implementation has to choose > to support > > it. > > > Adding it to OpenJPA would be a nice start, although adding > it to the JPA > spec would be better (along with the rest of the JDO 2.0 that is!) > > Cheers, > > Roger > > > > > <4|false|0.9.6-incubating> > > org.apache.openjpa.persistence.InvalidStateException: Attempt to > > change a > > primary key field of an instance that already has a final object > > id. Only > > new, unflushed instances whose id you have not retrieved can have > > their > > primary keys changed. FailedObject: > > [EMAIL PROTECTED] > > > > > > org.apache.openjpa.kernel.StateManagerImpl.assertNoPrimaryKeyChange > > (StateManagerImpl.java:1819) > > > > org.apache.openjpa.kernel.StateManagerImpl.settingStringField > > (StateManagerImpl.java:1800) > > figbird.lists.entities.Email.pcSetemail(Email.java) > > figbird.lists.entities.Email.setEmail(Email.java:36) > > ... > > -- > > View this message in context: http://www.nabble.com/change-primary- > > key-value--tf3244417.html#a9018988 > > Sent from the open-jpa-dev mailing list archive at Nabble.com. > > > > Craig Russell > Architect, Sun Java Enterprise System http://java.sun.com/products/jdo > 408 276-5638 mailto:[EMAIL PROTECTED] > P.S. A good JDO? O, Gasp! > > > > > > -- > View this message in context: > http://www.nabble.com/change-primary-key-value--tf3244417.html > #a9076663 > Sent from the open-jpa-dev mailing list archive at Nabble.com. > >
