[OPENJPA-315] Unenhanced generated id field of a primitive wrapper type causes NPE

• Type: Bug
• Status: Closed
• Priority: Critical
• Resolution: Fixed
• Fix Version/s: 1.0.0
• Component/s: UnenhancedClasses
• Assignee: Unassigned
• Reporter: Dain Sundstrom
• Created: 14/Aug/07 19:04
• Updated: 09/Mar/10 18:32
• Resolved: 29/Aug/07 01:26

Description

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.

Issue Links

• blocks: OPENEJB-628 Unenhanced JPA support with OpenJPA