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Posted to dev@openjpa.apache.org by "Patrick Linskey (JIRA)" <ji...@apache.org> on 2007/08/21 01:15:30 UTC
[jira] Commented: (OPENJPA-315) Unenhanced generated id field of a
primitive wrapper type causes NPE
[ https://issues.apache.org/jira/browse/OPENJPA-315?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12521271 ]
Patrick Linskey commented on OPENJPA-315:
-----------------------------------------
> I believe this is a critical bug because when using a primitive
> field the system appears to work but the id field is always 0
> which could cause data corruption.
I don't follow -- are you saying that you are seeing a data corruption problem?
Note that OpenJPA will not assign an ID field until it needs to, so you should call flush() or em.getObjectId() before checking to see if an ID field has been provided.
> Unenhanced generated id field of a primitive wrapper type causes NPE
> --------------------------------------------------------------------
>
> Key: OPENJPA-315
> URL: https://issues.apache.org/jira/browse/OPENJPA-315
> Project: OpenJPA
> Issue Type: Bug
> Reporter: Dain Sundstrom
> Priority: Critical
> Fix For: 1.0.0
>
> Attachments: OPENJPA-315.patch
>
>
> Unenhanced generated id field of a primitive wrapper type causes NPE because the field value is null. This bug only occurs when the id field is an object type as primitive fields are automatically initialized to 0. I believe this is a critical bug because when using a primitive field the system appears to work but the id field is always 0 which could cause data corruption. The following stack trace shows the bug:
> <openjpa-0.0.0-r420667:564688M nonfatal general error> org.apache.openjpa.persistence.PersistenceException: null
> at org.apache.openjpa.kernel.BrokerImpl.persist(BrokerImpl.java:2437)
> at org.apache.openjpa.kernel.BrokerImpl.persist(BrokerImpl.java:2251)
> at org.apache.openjpa.kernel.DelegatingBroker.persist(DelegatingBroker.java:1010)
> at org.apache.openjpa.persistence.EntityManagerImpl.persist(EntityManagerImpl.java:541)
> at org.apache.openjpa.enhance.AbstractUnenhancedClassTest.getObjectIdHelper(AbstractUnenhancedClassTest.java:134)
> at org.apache.openjpa.enhance.AbstractUnenhancedClassTest.testGetObjectIdOnOpenJPAType(AbstractUnenhancedClassTest.java:115)
> at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
> at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
> at com.intellij.rt.execution.junit.JUnitStarter.main(JUnitStarter.java:40)
> Caused by: java.lang.NullPointerException
> at org.apache.openjpa.util.ApplicationIds.fromPKValues(ApplicationIds.java:152)
> at org.apache.openjpa.enhance.ReflectingPersistenceCapable.pcNewObjectIdInstance(ReflectingPersistenceCapable.java:257)
> at org.apache.openjpa.util.ApplicationIds.create(ApplicationIds.java:384)
> at org.apache.openjpa.kernel.BrokerImpl.persist(BrokerImpl.java:2405)
> ... 23 more
> The attached patch reproduces this bug. The patch is a clone of TestUnenhancedFieldAccess that simply changes the id field to type Integer.
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