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From "Rick Curtis (JIRA)" <j...@apache.org>
Subject [jira] Created: (OPENJPA-1704) PCEnhancer incorrectly generates writes readExternal
Date Mon, 21 Jun 2010 15:27:23 GMT
PCEnhancer incorrectly generates writes readExternal 
-----------------------------------------------------

                 Key: OPENJPA-1704
                 URL: https://issues.apache.org/jira/browse/OPENJPA-1704
             Project: OpenJPA
          Issue Type: Bug
          Components: kernel
    Affects Versions: 2.0.0, 1.2.2
            Reporter: Rick Curtis
            Assignee: Rick Curtis


OPENJPA-1400 introduced a bug that can be encountered when reading a streamed object under
the following circumstances:
- Using a serializable DetachedStateManager  (<property name="openjpa.DetachState" value="fetch-groups(DetachedStateField=true)"/>)

- The Entity needs to have a version field AND either:
  - If no inheritance, a 'proxyable' (ie: java.sql.Date, java.util.List) field with a name
that is lexicographically after the version field.
  - If using inheritance, a 'proxyable' (ie: java.sql.Date, java.util.List) field in a child
class.

The bug could manifest itself in a number of ways. Below is the one I was able to reproduce.
java.lang.IllegalArgumentException
	at org.apache.openjpa.persistence.inheritance.serializable.A.pcProvideField(A.java)
	at org.apache.openjpa.kernel.DetachedStateManager.proxyDetachedDeserialized(DetachedStateManager.java:438)
	at org.apache.openjpa.persistence.inheritance.serializable.A.readExternal(A.java)
	at java.io.ObjectInputStream.readExternalData(ObjectInputStream.java:1792)
	at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1751)
	at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1329)
	at java.io.ObjectInputStream.readObject(ObjectInputStream.java:351)
	at org.apache.openjpa.persistence.inheritance.serializable.TestSerialization.serializeObject(TestSerialization.java:105)
	at org.apache.openjpa.persistence.inheritance.serializable.TestSerialization.testRoundTrip(TestSerialization.java:48)
	...

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