| NPE in remote session [message #803104] |
Mon, 20 February 2012 18:31  |
 Dragomir Zoranovic
Messages: 7
Registered: February 2012 |
Junior Member |
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Hello,
I am using 2.3.2 version of eclipselink. I´ve got NPE for merging object with remote sessions. Here is a stacktrace:
java.lang.NullPointerException
at org.eclipse.persistence.internal.queries.ContainerPolicy.createWrappedObjectFromExistingWrappedObject(ContainerPolicy.java:697)
at org.eclipse.persistence.mappings.CollectionMapping.mergeIntoObject(CollectionMapping.java:1491)
at org.eclipse.persistence.internal.descriptors.ObjectBuilder.mergeIntoObject(ObjectBuilder.java:3466)
at org.eclipse.persistence.internal.descriptors.ObjectBuilder.mergeIntoObject(ObjectBuilder.java:3430)
at org.eclipse.persistence.internal.sessions.MergeManager.mergeChangesForRefreshingRemoteObject(MergeManager.java:467)
at org.eclipse.persistence.internal.sessions.MergeManager.mergeChanges(MergeManager.java:361)
at org.eclipse.persistence.sessions.remote.RemoteSession.getObjectCorrespondingTo(RemoteSession.java:230)
at org.eclipse.persistence.queries.ReadObjectQuery.extractRemoteResult(ReadObjectQuery.java:606)
at org.eclipse.persistence.queries.DatabaseQuery.remoteExecute(DatabaseQuery.java:1788)
at org.eclipse.persistence.queries.ReadObjectQuery.remoteExecute(ReadObjectQuery.java:890)
at org.eclipse.persistence.queries.DatabaseQuery.remoteExecute(DatabaseQuery.java:1797)
at org.eclipse.persistence.queries.ReadQuery.remoteExecute(ReadQuery.java:360)
at org.eclipse.persistence.sessions.remote.RemoteSession.executeQuery(RemoteSession.java:129)
at org.eclipse.persistence.internal.sessions.AbstractSession.refreshAndLockObject(AbstractSession.java:3540)
at org.eclipse.persistence.internal.sessions.AbstractSession.refreshObject(AbstractSession.java:3551)
.....
NPE is thrown in the following line:
return referenceDescriptor.getObjectBuilder().wrapObject(mergeManager.getTargetVersionOfSourceObject(unwrapIteratorResult(wrappedObject), referenceDescriptor, targetSession), mergeManager.getSession());
Reference descriptor is attribute of the foreign reference mapping. This attribute is properly initialized on the server side but has NULL value on the client side because is declared as TRANSIENT.
Does anybody have any suggestions?
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