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From "Dianne Richards (JIRA)" <>
Subject [jira] [Resolved] (OPENJPA-2142) Merge of a new object does not handle Entity Id field
Date Tue, 08 May 2012 14:27:49 GMT


Dianne Richards resolved OPENJPA-2142.

    Resolution: Fixed
> Merge of a new object does not handle Entity Id field
> -----------------------------------------------------
>                 Key: OPENJPA-2142
>                 URL:
>             Project: OpenJPA
>          Issue Type: Bug
>    Affects Versions: 2.3.0, 2.2.1
>            Reporter: Dianne Richards
>            Assignee: Dianne Richards
>             Fix For: 2.3.0, 2.2.1
> When a merge is done on a new object with an Id that contains an Entity, the following
exception occurs:
> <openjpa-2.2.1-SNAPSHOT-r422266:1292578 nonfatal user error> 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
> FailedObject: hat.entities.Child@38d138d1
> 	at org.apache.openjpa.kernel.StateManagerImpl.assertNoPrimaryKeyChange(
> 	at org.apache.openjpa.kernel.StateManagerImpl.settingObjectField(
> 	at org.apache.openjpa.kernel.AttachStrategy.attachField(
> 	at org.apache.openjpa.kernel.VersionAttachStrategy.attach(
> 	at org.apache.openjpa.kernel.AttachManager.attach(
> 	at org.apache.openjpa.kernel.AttachStrategy.attachCollection(
> 	at org.apache.openjpa.kernel.AttachStrategy.replaceList(
> 	at org.apache.openjpa.kernel.AttachStrategy.attachField(
> 	at org.apache.openjpa.kernel.AttachManager.handleCascade(
> 	at org.apache.openjpa.kernel.AttachManager.attach(
> 	at org.apache.openjpa.kernel.AttachManager.attach(
> 	at org.apache.openjpa.kernel.BrokerImpl.attach(
> 	at org.apache.openjpa.kernel.DelegatingBroker.attach(
> 	at org.apache.openjpa.persistence.EntityManagerImpl.merge(
> 	...
> During the merge, a copy is made of the original object, with a copy of the key fields.
But, if a key field is an Entity, it is not copied, causing this exception in later processing.
The fix is to attach this field immediately after the original object is copied.

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