Got EntityExistsException when invoking EntityManager.merge() to persist a new
entity bean with generated id and enhanced at deployment time
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Key: OPENJPA-585
URL: https://issues.apache.org/jira/browse/OPENJPA-585
Project: OpenJPA
Issue Type: Bug
Components: kernel
Affects Versions: 1.1.0
Reporter: Jason Zheng
I create a new entity object with generated id, enhance it at deployment time
and persist it into db by invoking EntityManager.merge().
Department d = new Department();
d.setName('qa');
pc.merge(d);
Got below exception,
<openjpa-1.1.0-SNAPSHOT-r422266:647033 nonfatal store error>
org.apache.openjpa.persistence.EntityExistsException: Attempt to persist
detached object '[EMAIL PROTECTED]'. If this is a new instance, make sure any
versino and/or auto-generated primary key fields are null/default when
persisting.
FailedObject:
[EMAIL PROTECTED]
at org.apache.openjpa.kernel.BrokerImpl.persist(BrokerImpl.java:2403)
at org.apache.openjpa.kernel.AttachStrategy.persist(AttachStrategy.java:94)
at
org.apache.openjpa.kernel.VersionAttachStrategy.attach(VersionAttachStrategy.java:95)
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:3191)
at kodo.kernel.KodoBroker.attach(KodoBroker.java:251)
at org.apache.openjpa.kernel.DelegatingBroker.attach(DelegatingBroker.java:1142)
at
org.apache.openjpa.persistence.EntityManagerImpl.merge(EntityManagerImpl.java:740)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at
weblogic.deployment.BasePersistenceContextProxyImpl.invoke(BasePersistenceContextProxyImpl.java:90)
...
This is caused by a bug in VersionAttachStrategy, which creates appId and
passes it to persist() call for a new entity whose id is annotated with
@GeneratedValue.
Jason
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