OK, here it is:
https://issues.apache.org/jira/browse/OPENJPA-560
Hopefully that makes it plain where and when it is happening.
regards
Adam
Michael Dick on 08/04/08 16:17, wrote:
Hi Adam,
Please do open a JIRA. If you wouldn't mind including a testcase that
demonstrates the problem that would be much appreciated too.
-Mike
On Tue, Apr 8, 2008 at 7:16 AM, Adam Hardy <[EMAIL PROTECTED]>
wrote:
I have reduced this to a stand-alone unit test and also tested it against
Toplink and Hibernate, with which it works.
So I'm looking at a pure OpenJPA issue here.
Here is the low-down:
- Parent - child entities mapped using XML as opposed to annotations
- both inherit a mapped superclass
- both have a prepersist and preupdate listener configured
- not using enhancement
This is all I do:
EntityManager entityManager =
db.entityManagerFactory.createEntityManager();
entityManager.getTransaction().begin();
Genus genus = entityManager.find(Genus.class, new Long(1));
entityManager.getTransaction().commit();
entityManager.close();
// now detached
entityManager = db.entityManagerFactory.createEntityManager();
entityManager.getTransaction().begin();
entityManager.merge(genus);
and it throws an exception. If there is a child row in the db, I get the
exception below.
If there is no child in existence, I get a NullPointerException.
If I enhance the entities, all is hunkydory.
This is using OpenJPA v1.1.0 snapshot from February.
Do you want a bug report filed?
Regards Adam
Adam Hardy on 07/04/08 16:27, wrote:
I called merge on my parent entity because it is detached.
You can see from the stacktrace that something in merge() is not
happening.
$Proxy13 seems to be the name of the parent's child collection property,
I can see from debugging.
Does anybody recognise the problem?
<openjpa-1.1.0-SNAPSHOT-r420667:609825 fatal general error>
org.apache.openjpa.persistence.PersistenceException: Unable to create a
second class object proxy for final class "class $Proxy13". at
org.apache.openjpa.util.ProxyManagerImpl.assertNotFinal(ProxyManagerImpl.java:555)
at
org.apache.openjpa.util.ProxyManagerImpl.generateProxyCollectionBytecode(ProxyManagerImpl.java:524)
at
org.apache.openjpa.util.ProxyManagerImpl.getFactoryProxyCollection(ProxyManagerImpl.java:373)
at
org.apache.openjpa.util.ProxyManagerImpl.copyCollection(ProxyManagerImpl.java:192)
at
org.apache.openjpa.kernel.AttachStrategy.copyCollection(AttachStrategy.java:342)
at
org.apache.openjpa.kernel.AttachStrategy.attachCollection(AttachStrategy.java:319)
at
org.apache.openjpa.kernel.AttachStrategy.replaceList(AttachStrategy.java:357)
at
org.apache.openjpa.kernel.AttachStrategy.attachField(AttachStrategy.java:222)
at
org.apache.openjpa.kernel.VersionAttachStrategy.attach(VersionAttachStrategy.java:151)
at org.apache.openjpa.kernel.AttachManager.attach(AttachManager.java:241)
at
org.apache.openjpa.kernel.AttachManager.attach(AttachManager.java:101) at
org.apache.openjpa.kernel.BrokerImpl.attach(BrokerImpl.java:3196) at
org.apache.openjpa.kernel.DelegatingBroker.attach(DelegatingBroker.java:1142)
at
org.apache.openjpa.persistence.EntityManagerImpl.merge(EntityManagerImpl.java:736)
at
org.permacode.atomictest.jpa.JpaSpeciesDao.persist(JpaSpeciesDao.java:81)
