Home » Eclipse Projects » EclipseLink » NPE and other unmotivated exceptions (Errors in Eclipselink 2.3.0 JPA with POJO)
| NPE and other unmotivated exceptions [message #761327] |
Tue, 06 December 2011 04:48  |
 roman
Messages: 4
Registered: December 2011
Location: Austria |
Junior Member |
|
|
Hi there,
we experience severe problems using eclipselink 2.3.x JPA with POJO. We are writing an application that inserts and updates entities with a lot of master/detail relationships.
Inserting works fine, but if we want to update/delete an existing entity, we get a lot of unmotivated exceptions during flush or commit (even if a flush directly before the commit works).
First problem:
lookup an entiy (through em.find() with CacheRetrieveMode.BYPASS) and delete two child entities from the map results in:
javax.persistence.RollbackException: java.lang.NullPointerException
at org.eclipse.persistence.internal.jpa.transaction.EntityTransactionImpl.commitInternal(EntityTransactionImpl.java:102)
at org.eclipse.persistence.internal.jpa.transaction.EntityTransactionImpl.commit(EntityTransactionImpl.java:63)
at eu.lbase.prod.common.model.AbstractEntityManagerTest.deleteSkom(AbstractEntityManagerTest.java:448)
at eu.lbase.prod.common.model.AbstractEntityManagerTest.testDeleteSkom2(AbstractEntityManagerTest.java:396)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:44)
at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:15)
at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:41)
at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:20)
at org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:28)
at org.junit.internal.runners.statements.RunAfters.evaluate(RunAfters.java:31)
at org.junit.runners.BlockJUnit4ClassRunner.runNotIgnored(BlockJUnit4ClassRunner.java:79)
at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:71)
at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:49)
at org.junit.runners.ParentRunner$3.run(ParentRunner.java:193)
at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:52)
at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:191)
at org.junit.runners.ParentRunner.access$000(ParentRunner.java:42)
at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:184)
at org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:28)
at org.junit.runners.ParentRunner.run(ParentRunner.java:236)
at org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:50)
at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:467)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:683)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:390)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:197)
Caused by: java.lang.NullPointerException
at java.util.Hashtable.remove(Hashtable.java:436)
at org.eclipse.persistence.indirection.IndirectMap.remove(IndirectMap.java:599)
at org.eclipse.persistence.indirection.IndirectMap.remove(IndirectMap.java:599)
at org.eclipse.persistence.internal.queries.MapContainerPolicy.removeFrom(MapContainerPolicy.java:730)
at org.eclipse.persistence.internal.queries.ContainerPolicy.mergeChanges(ContainerPolicy.java:1068)
at org.eclipse.persistence.mappings.CollectionMapping.mergeChangesIntoObject(CollectionMapping.java:1334)
at org.eclipse.persistence.internal.descriptors.ObjectBuilder.mergeChangesIntoObject(ObjectBuilder.java:3409)
at org.eclipse.persistence.internal.sessions.MergeManager.mergeChangesOfWorkingCopyIntoOriginal(MergeManager.java:744)
at org.eclipse.persistence.internal.sessions.MergeManager.mergeChangesOfWorkingCopyIntoOriginal(MergeManager.java:617)
at org.eclipse.persistence.internal.sessions.MergeManager.mergeChanges(MergeManager.java:267)
at org.eclipse.persistence.internal.sessions.UnitOfWorkImpl.mergeChangesIntoParent(UnitOfWorkImpl.java:3254)
at org.eclipse.persistence.internal.sessions.RepeatableWriteUnitOfWork.mergeChangesIntoParent(RepeatableWriteUnitOfWork.java:370)
at org.eclipse.persistence.internal.sessions.RepeatableWriteUnitOfWork.commitRootUnitOfWork(RepeatableWriteUnitOfWork.java:284)
at org.eclipse.persistence.internal.sessions.UnitOfWorkImpl.commitAndResume(UnitOfWorkImpl.java:1143)
at org.eclipse.persistence.internal.jpa.transaction.EntityTransactionImpl.commitInternal(EntityTransactionImpl.java:84)
... 29 more
Second problem:
lookup an entity twice (with CacheRetrieveMode.BYPASS), than change one of them (change values of that entity and delete/insert child entities):
javax.persistence.RollbackException: Exception [EclipseLink-6054] (Eclipse Persistence Services - 2.3.1.v20111018-r10243): org.eclipse.persistence.exceptions.QueryException
Exception Description: Cannot add the object [eu.lbase.prod.common.model.SanpAnsprechp@1a53800], of class [class eu.lbase.prod.common.model.SanpAnsprechp], to container class [class org.eclipse.persistence.indirection.IndirectMap] using policy [MappedKeyMapContainerPolicy(class org.eclipse.persistence.indirection.IndirectMap)].
at org.eclipse.persistence.internal.jpa.transaction.EntityTransactionImpl.commitInternal(EntityTransactionImpl.java:102)
at org.eclipse.persistence.internal.jpa.transaction.EntityTransactionImpl.commit(EntityTransactionImpl.java:63)
at eu.lbase.prod.common.model.AbstractEntityManagerTest.deleteAndInsertChildRecords(AbstractEntityManagerTest.java:290)
at eu.lbase.prod.common.model.AbstractEntityManagerTest.testDeleteAndInsertChildRecords2(AbstractEntityManagerTest.java:222)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:44)
at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:15)
at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:41)
at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:20)
at org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:28)
at org.junit.internal.runners.statements.RunAfters.evaluate(RunAfters.java:31)
at org.junit.runners.BlockJUnit4ClassRunner.runNotIgnored(BlockJUnit4ClassRunner.java:79)
at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:71)
at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:49)
at org.junit.runners.ParentRunner$3.run(ParentRunner.java:193)
at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:52)
at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:191)
at org.junit.runners.ParentRunner.access$000(ParentRunner.java:42)
at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:184)
at org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:28)
at org.junit.runners.ParentRunner.run(ParentRunner.java:236)
at org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:50)
at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:467)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:683)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:390)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:197)
Caused by: Exception [EclipseLink-6054] (Eclipse Persistence Services - 2.3.1.v20111018-r10243): org.eclipse.persistence.exceptions.QueryException
Exception Description: Cannot add the object [eu.lbase.prod.common.model.SanpAnsprechp@1a53800], of class [class eu.lbase.prod.common.model.SanpAnsprechp], to container class [class org.eclipse.persistence.indirection.IndirectMap] using policy [MappedKeyMapContainerPolicy(class org.eclipse.persistence.indirection.IndirectMap)].
at org.eclipse.persistence.exceptions.QueryException.cannotAddToContainer(QueryException.java:351)
at org.eclipse.persistence.internal.queries.MappedKeyMapContainerPolicy.addInto(MappedKeyMapContainerPolicy.java:176)
at org.eclipse.persistence.mappings.CollectionMapping.mergeChangesIntoObject(CollectionMapping.java:1358)
at org.eclipse.persistence.internal.descriptors.ObjectBuilder.mergeChangesIntoObject(ObjectBuilder.java:3409)
at org.eclipse.persistence.internal.sessions.MergeManager.mergeChangesOfWorkingCopyIntoOriginal(MergeManager.java:744)
at org.eclipse.persistence.internal.sessions.MergeManager.mergeChangesOfWorkingCopyIntoOriginal(MergeManager.java:617)
at org.eclipse.persistence.internal.sessions.MergeManager.mergeChanges(MergeManager.java:267)
at org.eclipse.persistence.mappings.ObjectReferenceMapping.mergeIntoObject(ObjectReferenceMapping.java:462)
at org.eclipse.persistence.internal.descriptors.ObjectBuilder.mergeIntoObject(ObjectBuilder.java:3466)
at org.eclipse.persistence.internal.descriptors.ObjectBuilder.mergeChangesIntoObject(ObjectBuilder.java:3400)
at org.eclipse.persistence.internal.sessions.MergeManager.mergeChangesOfWorkingCopyIntoOriginal(MergeManager.java:744)
at org.eclipse.persistence.internal.sessions.MergeManager.mergeChangesOfWorkingCopyIntoOriginal(MergeManager.java:617)
at org.eclipse.persistence.internal.sessions.MergeManager.mergeChanges(MergeManager.java:267)
at org.eclipse.persistence.internal.sessions.UnitOfWorkImpl.mergeChangesIntoParent(UnitOfWorkImpl.java:3254)
at org.eclipse.persistence.internal.sessions.RepeatableWriteUnitOfWork.mergeChangesIntoParent(RepeatableWriteUnitOfWork.java:370)
at org.eclipse.persistence.internal.sessions.RepeatableWriteUnitOfWork.commitRootUnitOfWork(RepeatableWriteUnitOfWork.java:284)
at org.eclipse.persistence.internal.sessions.UnitOfWorkImpl.commitAndResume(UnitOfWorkImpl.java:1143)
at org.eclipse.persistence.internal.jpa.transaction.EntityTransactionImpl.commitInternal(EntityTransactionImpl.java:84)
... 29 more
Third problem:
lookup an entity, detach the entity, change values, merge the entity back, than do the same with child entities:
javax.persistence.RollbackException: Exception [EclipseLink-69] (Eclipse Persistence Services - 2.3.1.v20111018-r10243): org.eclipse.persistence.exceptions.DescriptorException
Exception Description: A NullPointerException was thrown while extracting a value from the instance variable [zadAdrid] in the object [null].
Internal Exception: java.lang.NullPointerException
Mapping: org.eclipse.persistence.mappings.DirectToFieldMapping[zadAdrid-->SZAD_ADRORG.ZAD_ADRID]
Descriptor: RelationalDescriptor(eu.lbase.prod.common.model.SzadAdrorgPK --> [DatabaseTable(SZAD_ADRORG)])
at org.eclipse.persistence.internal.jpa.transaction.EntityTransactionImpl.commitInternal(EntityTransactionImpl.java:102)
at org.eclipse.persistence.internal.jpa.transaction.EntityTransactionImpl.commit(EntityTransactionImpl.java:63)
at eu.lbase.prod.common.model.AbstractEntityManagerTest.updateAddress(AbstractEntityManagerTest.java:371)
at eu.lbase.prod.common.model.AbstractEntityManagerTest.testUpdateAddress(AbstractEntityManagerTest.java:305)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:44)
at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:15)
at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:41)
at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:20)
at org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:28)
at org.junit.internal.runners.statements.RunAfters.evaluate(RunAfters.java:31)
at org.junit.runners.BlockJUnit4ClassRunner.runNotIgnored(BlockJUnit4ClassRunner.java:79)
at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:71)
at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:49)
at org.junit.runners.ParentRunner$3.run(ParentRunner.java:193)
at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:52)
at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:191)
at org.junit.runners.ParentRunner.access$000(ParentRunner.java:42)
at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:184)
at org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:28)
at org.junit.runners.ParentRunner.run(ParentRunner.java:236)
at org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:50)
at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:467)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:683)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:390)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:197)
Caused by: Exception [EclipseLink-69] (Eclipse Persistence Services - 2.3.1.v20111018-r10243): org.eclipse.persistence.exceptions.DescriptorException
Exception Description: A NullPointerException was thrown while extracting a value from the instance variable [zadAdrid] in the object [null].
Internal Exception: java.lang.NullPointerException
Mapping: org.eclipse.persistence.mappings.DirectToFieldMapping[zadAdrid-->SZAD_ADRORG.ZAD_ADRID]
Descriptor: RelationalDescriptor(eu.lbase.prod.common.model.SzadAdrorgPK --> [DatabaseTable(SZAD_ADRORG)])
at org.eclipse.persistence.exceptions.DescriptorException.nullPointerWhileGettingValueThruInstanceVariableAccessor(DescriptorException.java:1263)
at org.eclipse.persistence.internal.descriptors.InstanceVariableAttributeAccessor.getAttributeValueFromObject(InstanceVariableAttributeAccessor.java:88)
at org.eclipse.persistence.mappings.DatabaseMapping.getAttributeValueFromObject(DatabaseMapping.java:516)
at org.eclipse.persistence.mappings.DatabaseMapping.getRealAttributeValueFromObject(DatabaseMapping.java:660)
at org.eclipse.persistence.descriptors.CMPPolicy.createPrimaryKeyInstance(CMPPolicy.java:423)
at org.eclipse.persistence.internal.queries.MapContainerPolicy.keyFrom(MapContainerPolicy.java:581)
at org.eclipse.persistence.internal.queries.MapContainerPolicy.compareKeys(MapContainerPolicy.java:265)
at org.eclipse.persistence.internal.queries.ContainerPolicy.collectObjectForNewCollection(ContainerPolicy.java:485)
at org.eclipse.persistence.internal.queries.ContainerPolicy.compareCollectionsForChange(ContainerPolicy.java:551)
at org.eclipse.persistence.mappings.CollectionMapping.compareCollectionsForChange(CollectionMapping.java:483)
at org.eclipse.persistence.mappings.CollectionMapping.compareForChange(CollectionMapping.java:523)
at org.eclipse.persistence.descriptors.changetracking.DeferredChangeDetectionPolicy.createObjectChangeSetThroughComparison(DeferredChangeDetectionPolicy.java:177)
at org.eclipse.persistence.descriptors.changetracking.DeferredChangeDetectionPolicy.createObjectChangeSet(DeferredChangeDetectionPolicy.java:137)
at org.eclipse.persistence.descriptors.changetracking.DeferredChangeDetectionPolicy.calculateChanges(DeferredChangeDetectionPolicy.java:89)
at org.eclipse.persistence.descriptors.changetracking.DeferredChangeDetectionPolicy.calculateChangesForExistingObject(DeferredChangeDetectionPolicy.java:54)
at org.eclipse.persistence.internal.sessions.UnitOfWorkImpl.calculateChanges(UnitOfWorkImpl.java:643)
at org.eclipse.persistence.internal.sessions.UnitOfWorkImpl.commitToDatabaseWithChangeSet(UnitOfWorkImpl.java:1490)
at org.eclipse.persistence.internal.sessions.RepeatableWriteUnitOfWork.commitRootUnitOfWork(RepeatableWriteUnitOfWork.java:267)
at org.eclipse.persistence.internal.sessions.UnitOfWorkImpl.commitAndResume(UnitOfWorkImpl.java:1143)
at org.eclipse.persistence.internal.jpa.transaction.EntityTransactionImpl.commitInternal(EntityTransactionImpl.java:84)
... 29 more
Caused by: java.lang.NullPointerException
at sun.reflect.UnsafeFieldAccessorImpl.ensureObj(UnsafeFieldAccessorImpl.java:36)
at sun.reflect.UnsafeObjectFieldAccessorImpl.get(UnsafeObjectFieldAccessorImpl.java:18)
at java.lang.reflect.Field.get(Field.java:358)
at org.eclipse.persistence.internal.descriptors.InstanceVariableAttributeAccessor.getAttributeValueFromObject(InstanceVariableAttributeAccessor.java:76)
... 47 more
Fourth problem:
same as above, but before that insert the entity with the same entitymanager.
javax.persistence.RollbackException: Exception [EclipseLink-6004] (Eclipse Persistence Services - 2.3.1.v20111018-r10243): org.eclipse.persistence.exceptions.QueryException
Exception Description: The object [eu.lbase.prod.common.model.SzadAdrorg@142ef25], of class [class eu.lbase.prod.common.model.SzadAdrorg], with identity hashcode (System.identityHashCode()) [21.163.813],
is not from this UnitOfWork object space, but the parent session's. The object was never registered in this UnitOfWork,
but read from the parent session and related to an object registered in the UnitOfWork. Ensure that you are correctly
registering your objects. If you are still having problems, you can use the UnitOfWork.validateObjectSpace() method to
help debug where the error occurred. For more information, see the manual or FAQ.
at org.eclipse.persistence.internal.jpa.transaction.EntityTransactionImpl.commitInternal(EntityTransactionImpl.java:102)
at org.eclipse.persistence.internal.jpa.transaction.EntityTransactionImpl.commit(EntityTransactionImpl.java:63)
at eu.lbase.prod.common.model.AbstractEntityManagerTest.updateAddress(AbstractEntityManagerTest.java:371)
at eu.lbase.prod.common.model.AbstractEntityManagerTest.testUpdateAddress2(AbstractEntityManagerTest.java:322)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:44)
at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:15)
at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:41)
at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:20)
at org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:28)
at org.junit.internal.runners.statements.RunAfters.evaluate(RunAfters.java:31)
at org.junit.runners.BlockJUnit4ClassRunner.runNotIgnored(BlockJUnit4ClassRunner.java:79)
at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:71)
at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:49)
at org.junit.runners.ParentRunner$3.run(ParentRunner.java:193)
at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:52)
at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:191)
at org.junit.runners.ParentRunner.access$000(ParentRunner.java:42)
at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:184)
at org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:28)
at org.junit.runners.ParentRunner.run(ParentRunner.java:236)
at org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:50)
at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:467)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:683)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:390)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:197)
Caused by: Exception [EclipseLink-6004] (Eclipse Persistence Services - 2.3.1.v20111018-r10243): org.eclipse.persistence.exceptions.QueryException
Exception Description: The object [eu.lbase.prod.common.model.SzadAdrorg@142ef25], of class [class eu.lbase.prod.common.model.SzadAdrorg], with identity hashcode (System.identityHashCode()) [21.163.813],
is not from this UnitOfWork object space, but the parent session's. The object was never registered in this UnitOfWork,
but read from the parent session and related to an object registered in the UnitOfWork. Ensure that you are correctly
registering your objects. If you are still having problems, you can use the UnitOfWork.validateObjectSpace() method to
help debug where the error occurred. For more information, see the manual or FAQ.
at org.eclipse.persistence.exceptions.QueryException.backupCloneIsOriginalFromParent(QueryException.java:285)
at org.eclipse.persistence.internal.sessions.UnitOfWorkImpl.getBackupClone(UnitOfWorkImpl.java:1981)
at org.eclipse.persistence.internal.queries.MapContainerPolicy.compareKeys(MapContainerPolicy.java:264)
at org.eclipse.persistence.internal.queries.ContainerPolicy.collectObjectForNewCollection(ContainerPolicy.java:485)
at org.eclipse.persistence.internal.queries.ContainerPolicy.compareCollectionsForChange(ContainerPolicy.java:551)
at org.eclipse.persistence.mappings.CollectionMapping.compareCollectionsForChange(CollectionMapping.java:483)
at org.eclipse.persistence.mappings.CollectionMapping.compareForChange(CollectionMapping.java:523)
at org.eclipse.persistence.descriptors.changetracking.DeferredChangeDetectionPolicy.createObjectChangeSetThroughComparison(DeferredChangeDetectionPolicy.java:177)
at org.eclipse.persistence.descriptors.changetracking.DeferredChangeDetectionPolicy.createObjectChangeSet(DeferredChangeDetectionPolicy.java:137)
at org.eclipse.persistence.descriptors.changetracking.DeferredChangeDetectionPolicy.calculateChanges(DeferredChangeDetectionPolicy.java:89)
at org.eclipse.persistence.descriptors.changetracking.DeferredChangeDetectionPolicy.calculateChangesForExistingObject(DeferredChangeDetectionPolicy.java:54)
at org.eclipse.persistence.internal.sessions.UnitOfWorkImpl.calculateChanges(UnitOfWorkImpl.java:643)
at org.eclipse.persistence.internal.sessions.UnitOfWorkImpl.commitToDatabaseWithChangeSet(UnitOfWorkImpl.java:1490)
at org.eclipse.persistence.internal.sessions.RepeatableWriteUnitOfWork.commitRootUnitOfWork(RepeatableWriteUnitOfWork.java:267)
at org.eclipse.persistence.internal.sessions.UnitOfWorkImpl.commitAndResume(UnitOfWorkImpl.java:1143)
at org.eclipse.persistence.internal.jpa.transaction.EntityTransactionImpl.commitInternal(EntityTransactionImpl.java:84)
... 29 more
We identified, that a lot of problems occur, if we use detach/merge and can be omitted, if we dont do that. But a few errors still occur without detach/merge.
We experimented with "orphans-removal=true", but that didnt help.
We experimented with disabling the cache (since the data is manipulated through other applications as well). That helped a bit, but brought other problems (stack overflow in 1:1 relationships), unwanted database queries (in a 1:n relation, if the master triggers the population of the child-map, for each child record, the master is selected again from the database).
I attach a small Eclipse project with unittests, showing the problems we ran into.
Please have a look to it.
we are testing with eclipselink from indigo (2.3.0) against an oracle database 10g. Our application is designed to be a long running osgi application (since the startup of the eclipselink framework takes 1-2 seconds), but we normally clear the entitymanager after each transaction (commit).
Thanks,
Roman
|
|
|
Current Time: Sat May 25 21:12:07 EDT 2013
Powered by FUDForum. Page generated in 0.06916 seconds
|
] 
Search
Help
Register
Login
Home
