NullPointerException with Default Value

Hi,
We got an int field in a class. On the database this row can contaion null-values.
With TopLink 9 everything was ok but with 10 under Java 1.3 it fails with the following exception:
Is this a bug in 10?
Thanks,
Simon
Exception [TOPLINK-71] (Oracle TopLink - 10g Release 3 (10.1.3.0.0) (Build 060118)):
oracle.toplink.exceptions.DescriptorException
Exception Description: A NullPointerException was thrown while setting the value of the instance variable
[abstraktionsEbene] to the value [null].
Internal Exception: java.lang.NullPointerException
Mapping: oracle.toplink.mappings.DirectToFieldMapping[abstraktionsEbene-->UNO_BETRIEBSPUNKT.ABSTRAKTIONSEBENE]
Descriptor: RelationalDescriptor(ch.sbb.rcs.zld.model.topologie.Betriebspunkt --> [DatabaseTable(UNO_BETRIEBSPUNKT)])
at oracle.toplink.exceptions.DescriptorException.nullPointerWhileSettingValueThruInstanceVariableAccessor
(DescriptorException.java:1238)
at oracle.toplink.internal.descriptors.InstanceVariableAttributeAccessor.setAttributeValueInObject
(InstanceVariableAttributeAccessor.java(Compiled Code))
at oracle.toplink.mappings.DatabaseMapping.setAttributeValueInObject(DatabaseMapping.java(Compiled Code))
at oracle.toplink.mappings.DatabaseMapping.readFromRowIntoObject(DatabaseMapping.java(Compiled Code))
at oracle.toplink.internal.descriptors.ObjectBuilder.buildAttributesIntoObject(ObjectBuilder.java(Compiled Code))
at oracle.toplink.internal.descriptors.ObjectBuilder.buildObject(ObjectBuilder.java(Compiled Code))
at oracle.toplink.internal.descriptors.ObjectBuilder.buildObject(ObjectBuilder.java(Compiled Code))
at oracle.toplink.internal.descriptors.ObjectBuilder.buildObjectsInto(ObjectBuilder.java:667)
at oracle.toplink.internal.queryframework.DatabaseQueryMechanism.buildObjectsFromRows
(DatabaseQueryMechanism.java:141)
at oracle.toplink.queryframework.ReadAllQuery.executeObjectLevelReadQuery(ReadAllQuery.java:468)
at oracle.toplink.queryframework.ObjectLevelReadQuery.executeDatabaseQuery(ObjectLevelReadQuery.java:800)
at oracle.toplink.queryframework.DatabaseQuery.execute(DatabaseQuery.java:603)
at oracle.toplink.queryframework.ObjectLevelReadQuery.execute(ObjectLevelReadQuery.java:768)
at oracle.toplink.queryframework.ReadAllQuery.execute(ReadAllQuery.java:436)
at oracle.toplink.publicinterface.Session.internalExecuteQuery(Session.java:2062)
at oracle.toplink.publicinterface.Session.executeQuery(Session.java:981)
at oracle.toplink.publicinterface.Session.executeQuery(Session.java:953)
at ch.sbb.rcs.zld.toplink.TopLinkDaoSupport$6.readFromSession(TopLinkDaoSupport.java:271)
at org.springframework.orm.toplink.SessionReadCallback.doInTopLink(SessionReadCallback.java:75)
at org.springframework.orm.toplink.TopLinkTemplate.execute(TopLinkTemplate.java:152)
at ch.sbb.rcs.zld.toplink.TopLinkDaoSupport.executeNamedQuery(TopLinkDaoSupport.java:245)
at ch.sbb.rcs.zld.business.impl.TopologieManagerImpl.findBetriebpunktByIdWithoutTopologieVersion
(TopologieManagerImpl.java:2204)
at ch.sbb.rcs.zld.business.impl.TopologieManagerImpl.findBetriebpunktById(TopologieManagerImpl.java:2171)
at ch.sbb.rcs.zld.business.impl.TopologieManagerImpl.mapBpsToBahnhof(TopologieManagerImpl.java:422)
at ch.sbb.rcs.zld.business.impl.TopologieManagerImpl.mapZugeordneteBpsToBahnhoefe(TopologieManagerImpl.java:485)
at ch.sbb.rcs.zld.business.impl.TopologieManagerImpl.findBahnhoefe(TopologieManagerImpl.java:170)
at ch.sbb.rcs.zld.application.impl.RegelServiceImpl.findBahnhoefe(RegelServiceImpl.java:370)
at ch.sbb.rcs.zld.application.ejb.RegelServiceBean.findBahnhoefe(RegelServiceBean.java:116)
at ch.sbb.rcs.zld.application.ejb.EJSRemoteStatelessRegelService_78a4cee8.findBahnhoefe
(EJSRemoteStatelessRegelService_78a4cee8.java:386)
at ch.sbb.rcs.zld.application.ejb._EJSRemoteStatelessRegelService_78a4cee8_Tie.findBahnhoefe
(_EJSRemoteStatelessRegelService_78a4cee8_Tie.java:593)
at ch.sbb.rcs.zld.application.ejb._EJSRemoteStatelessRegelService_78a4cee8_Tie._invoke
(_EJSRemoteStatelessRegelService_78a4cee8_Tie.java:111)
at com.ibm.CORBA.iiop.ServerDelegate.dispatchInvokeHandler(ServerDelegate.java:615)
at com.ibm.CORBA.iiop.ServerDelegate.dispatch(ServerDelegate.java:468)
at com.ibm.rmi.iiop.ORB.process(ORB.java:396)
at com.ibm.CORBA.iiop.ORB.process(ORB.java:1608)
at com.ibm.rmi.iiop.Connection.doWork(Connection.java:2164)
at com.ibm.rmi.iiop.WorkUnitImpl.doWork(WorkUnitImpl.java:63)
at com.ibm.ejs.oa.pool.PooledThread.run(ThreadPool.java:95)
at com.ibm.ws.util.ThreadPool$Worker.run(ThreadPool.java:672)
Internal Exception Stack:

We are experiencing the same problem. Is this a known TopLink issue? Thanks.

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