[OPENJPA-1900] ClassCastException when serializing an entity if DetachedStateField=true

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 2.0.1, 2.1.0, 2.2.0
• Fix Version/s: 2.1.0, 2.2.0
• Component/s: kernel
• Assignee: Richard G. Curtis
• Reporter: Mark Struberg
• Created: 30/Nov/10 09:20
• Updated: 02/Feb/12 17:02
• Resolved: 17/Dec/10 12:20

Description

When using

<property name="openjpa.DetachState" value="fetch-groups(DetachedStateField=true)"/>

serializing an entity leads to the following Exception:

java.lang.ClassCastException: org.apache.openjpa.kernel.StateManagerImpl cannot be cast to org.apache.openjpa.kernel.DetachedStateManager
at org.apache.openjpa.util.Proxies.writeReplace(Proxies.java:147)
at org.apache.openjpa.util.java$util$Date$proxy.writeReplace(Unknown Source)
at sun.reflect.GeneratedMethodAccessor176.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at java.io.ObjectStreamClass.invokeWriteReplace(ObjectStreamClass.java:1032)
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1107)
at java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:326)
at org.apache.openjpa.kernel.SingleFieldManager.serialize(SingleFieldManager.java:545)
at org.apache.openjpa.kernel.StateManagerImpl.writeDetached(StateManagerImpl.java:1478)
at at.ac.tuwien.tiss.curriculum.be.entities.CurriculumVersion.writeExternal(CurriculumVersion.java)
at java.io.ObjectOutputStream.writeExternalData(ObjectOutputStream.java:1421)

This seems related to OPENJPA-1597