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From "Dain Sundstrom (JIRA)" <j...@apache.org>
Subject [jira] Created: (OPENJPA-315) Unenhanced generated id field of a primitive wrapper type causes NPE
Date Tue, 14 Aug 2007 19:05:30 GMT
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


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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