db4o Tracker

[COR-2049] CascadeDeletion on a collection deletes collection-members.

Thu, 9 Sep 2010 07:39:19 +0000 (GMT)

One of the most sensible places for cascade deletion is to delete the collection of a object. Because the collection is often a 'embedded', non-shared instance and therefore can safely deleted. However when you enable cascadeDeletion on a collection, the members are also deleted.

This destroys this really useful use case.

See also: test-cases.

[COR-2048] Deleting the key-object from a dictionary breaks the dictionary-object

Wed, 8 Sep 2010 17:00:57 +0000 (GMT)

When you delete the key-object, which is used in a dictionary, it will crash the dictionary. (Only on .NET

Reproduce:
1. Create dictionary with some objects as key value, store it.
2. Delete a key-object from the dictionary
3. Try to load the dictionary.

Root-Cause:
The .NET dictonary cannot have 'null' as key-entry.

Exception:

System.ArgumentException: The value "MyData" is not of type "ConsoleApplication2.Program+Id" and cannot be used in this generic collection.
Parameter name: key
   at System.ThrowHelper.ThrowWrongKeyTypeArgumentException(Object key, Type targetType)
   at System.Collections.Generic.Dictionary`2.System.Collections.IDictionary.set_Item(Object key, Object value)
   at Db4objects.Db4o.Typehandlers.MapTypeHandler.Activate(IReferenceActivationContext context)
   at Db4objects.Db4o.Internal.Handlers4.Activate(UnmarshallingContext context, ITypeHandler4 handler)
   at Db4objects.Db4o.Internal.TypeHandlerAspect._IClosure4_110.Run()
   at Db4objects.Db4o.Internal.Marshall.SlotFormat.DoWithSlotIndirection(IReadBuffer buffer, IClosure4 closure)
   at Db4objects.Db4o.Internal.TypeHandlerAspect.Activate(UnmarshallingContext context)
   at Db4objects.Db4o.Internal.Handlers.StandardReferenceTypeHandler._MarshallingInfoTraverseAspectCommand_63.ProcessAspect(ClassAspect aspect, Int32 currentSlot, Boolean isNull)
   at Db4objects.Db4o.Internal.Metadata.MarshallingInfoTraverseAspectCommand.ProcessAspect(ClassAspect aspect, Int32 currentSlot)
   at Db4objects.Db4o.Internal.Metadata.StandardAspectTraversalStrategy.TraverseAllAspects(ITraverseAspectCommand command)
   at Db4objects.Db4o.Internal.ClassMetadata.TraverseAllAspects(ITraverseAspectCommand command)
   at Db4objects.Db4o.Internal.Handlers.StandardReferenceTypeHandler.TraverseAllAspects(IMarshallingInfo context, ITraverseAspectCommand command)
   at Db4objects.Db4o.Internal.Handlers.StandardReferenceTypeHandler.ActivateAspects(UnmarshallingContext context)
   at Db4objects.Db4o.Internal.Handlers.StandardReferenceTypeHandler.Activate(IReferenceActivationContext context)
   at Db4objects.Db4o.Internal.Handlers4.Activate(UnmarshallingContext context, ITypeHandler4 handler)
   at Db4objects.Db4o.Internal.ClassMetadata.InstantiateFields(UnmarshallingContext context)
   at Db4objects.Db4o.Internal.ClassMetadata.Activate(UnmarshallingContext context)
   at Db4objects.Db4o.Internal.ClassMetadata.Instantiate(UnmarshallingContext context)
   at Db4objects.Db4o.Internal.Marshall.UnmarshallingContext.Read()
   at Db4objects.Db4o.Internal.ObjectReference.Read(Transaction trans, ByteArrayBuffer buffer, Object obj, IActivationDepth instantiationDepth, Int32 addToIDTree, Boolean checkIDTree)
   at Db4objects.Db4o.Internal.ObjectReference.ReadForActivation(IActivationContext context)
   at Db4objects.Db4o.Internal.ObjectReference.ActivateInternal(IActivationContext context)
   at Db4objects.Db4o.Internal.ObjectContainerBase.ProcessedByImmediateActivation(IActivationContext context)
   at Db4objects.Db4o.Internal.ObjectContainerBase.StillToActivate(IActivationContext context)
   at Db4objects.Db4o.Internal.Marshall.AbstractReadContext.ReadObject()
   at Db4objects.Db4o.Internal.Marshall.AbstractReadContext.ReadAtCurrentSeekPosition(ITypeHandler4 handler)
   at Db4objects.Db4o.Internal.OpenTypeHandler.Read(IReadContext readContext)
   at Db4objects.Db4o.Internal.Handlers4.ReadValueType(IReadContext context, ITypeHandler4 handler)
   at Db4objects.Db4o.Internal.Marshall.AbstractReadContext.ReadAtCurrentSeekPosition(ITypeHandler4 handler)
   at Db4objects.Db4o.Internal.Marshall.AbstractReadContext._IClosure4_38.Run()
   at Db4objects.Db4o.Internal.Marshall.SlotFormat.DoWithSlotIndirection(IReadBuffer buffer, ITypeHandler4 typeHandler, IClosure4 closure)
   at Db4objects.Db4o.Internal.Marshall.AbstractReadContext.ReadObject(ITypeHandler4 handlerType)
   at Db4objects.Db4o.Internal.Marshall.AbstractReadContext.Read(ITypeHandler4 handlerType)
   at Db4objects.Db4o.Internal.FieldMetadata.Read(IInternalReadContext context)
   at Db4objects.Db4o.Internal.FieldMetadata.Activate(UnmarshallingContext context)
   at Db4objects.Db4o.Internal.Handlers.StandardReferenceTypeHandler._MarshallingInfoTraverseAspectCommand_63.ProcessAspect(ClassAspect aspect, Int32 currentSlot, Boolean isNull)
   at Db4objects.Db4o.Internal.Metadata.MarshallingInfoTraverseAspectCommand.ProcessAspect(ClassAspect aspect, Int32 currentSlot)
   at Db4objects.Db4o.Internal.Metadata.StandardAspectTraversalStrategy.TraverseAllAspects(ITraverseAspectCommand command)
   at Db4objects.Db4o.Internal.ClassMetadata.TraverseAllAspects(ITraverseAspectCommand command)
   at Db4objects.Db4o.Internal.Handlers.StandardReferenceTypeHandler.TraverseAllAspects(IMarshallingInfo context, ITraverseAspectCommand command)
   at Db4objects.Db4o.Internal.Handlers.StandardReferenceTypeHandler.ActivateAspects(UnmarshallingContext context)
   at Db4objects.Db4o.Internal.Handlers.StandardReferenceTypeHandler.Activate(IReferenceActivationContext context)
   at Db4objects.Db4o.Internal.Handlers4.Activate(UnmarshallingContext context, ITypeHandler4 handler)
   at Db4objects.Db4o.Internal.ClassMetadata.InstantiateFields(UnmarshallingContext context)
   at Db4objects.Db4o.Internal.ClassMetadata.Activate(UnmarshallingContext context)
   at Db4objects.Db4o.Internal.ClassMetadata.Instantiate(UnmarshallingContext context)
   at Db4objects.Db4o.Internal.Marshall.UnmarshallingContext.Read()
   at Db4objects.Db4o.Internal.ObjectReference.Read(Transaction trans, ByteArrayBuffer buffer, Object obj, IActivationDepth instantiationDepth, Int32 addToIDTree, Boolean checkIDTree)
   at Db4objects.Db4o.Internal.ObjectReference.Read(Transaction trans, IActivationDepth instantiationDepth, Int32 addToIDTree, Boolean checkIDTree)
   at Db4objects.Db4o.Internal.ObjectContainerBase._IFunction4_891.Apply(Object trans)
   at Db4objects.Db4o.Internal.ObjectContainerBase.AsTopLevelCall(IFunction4 block, Transaction trans)
   at Db4objects.Db4o.Internal.ObjectContainerBase.ReadActivatedObjectNotInCache(Transaction trans, Int32 id)
   at Db4objects.Db4o.Internal.Query.Result.AbstractQueryResult.ActivatedObject(Int32 id)
   at Db4objects.Db4o.Internal.Query.Result.IdListQueryResult.Get(Int32 index)
   at Db4objects.Db4o.Internal.Query.Result.StatefulQueryResult.Get(Int32 index)
   at Db4objects.Db4o.Internal.Query.GenericObjectSetFacade`1.get_Item(Int32 index)
   at ConsoleApplication2.Program.Main(String[] args) in C:\Users\Gamlor\Develop\VSPro

[COR-2047] A NotTransparentActivationEnabled message is issue for ActivatableLists

Tue, 7 Sep 2010 20:52:44 +0000 (GMT)

When you store ActivatableLists a NotTransparentActivationEnabled-message is issued for the diagnostic-message listener. This is quite configusing, because you get NotTransparentActivationEnabled-message for correct code.

See forum: http://developer.db4o.com/Forums/tabid/98/aft/10178/Default.aspx

See also attached test-case

[COR-2046] Queries fail in C/S mode if JavaSupport() is added in configuration

Tue, 7 Sep 2010 16:46:00 +0000 (GMT)

testcase attached.

exception details as follows:

Add constructor that won't throw exceptions, configure constructor calls, configure exceptionsOnNotStorable(false) or provide a translator to class 'Db4objects.Db4o.CS.Internal.ClassInfo, Db4objects.Db4o.CS' and make sure the class is deployed to the server with the same package/namespace + assembly name.

   at Db4objects.Db4o.CS.Internal.ClientObjectContainer.CreateClassMetadata(ClassMetadata clazz, IReflectClass claxx, ClassMetadata superClazz)
   at Db4objects.Db4o.Internal.ClassMetadataRepository.CreateClassMetadata(ClassMetadata clazz, IReflectClass reflectClazz)
   at Db4objects.Db4o.Internal.ClassMetadataRepository.ProduceClassMetadata(IReflectClass reflectClazz)
   at Db4objects.Db4o.Internal.ObjectContainerBase.ProduceClassMetadata(IReflectClass claxx)
   at Db4objects.Db4o.Internal.TransportObjectContainer.ProduceClassMetadata(IReflectClass claxx)
   at Db4objects.Db4o.Internal.Serializer.Marshall(ObjectContainerBase serviceProvider, Object obj)
   at Db4objects.Db4o.Internal.Serializer.Marshall(Transaction ta, Object obj)
   at Db4objects.Db4o.CS.Internal.ClientObjectContainer.SendClassMeta(IReflectClass reflectClass)
   at Db4objects.Db4o.CS.Internal.ClientObjectContainer.CreateClassMetadata(ClassMetadata clazz, IReflectClass claxx, ClassMetadata superClazz)
   at Db4objects.Db4o.Internal.ClassMetadataRepository.CreateClassMetadata(ClassMetadata clazz, IReflectClass reflectClazz)
   at Db4objects.Db4o.Internal.ClassMetadataRepository.ProduceClassMetadata(IReflectClass reflectClazz)
   at Db4objects.Db4o.Internal.ClassMetadataRepository.CreateClassMetadata(ClassMetadata clazz, IReflectClass reflectClazz)
   at Db4objects.Db4o.Internal.ClassMetadataRepository.ProduceClassMetadata(IReflectClass reflectClazz)
   at Db4objects.Db4o.Internal.ObjectContainerBase.ProduceClassMetadata(IReflectClass claxx)
   at Db4objects.Db4o.Internal.TransportObjectContainer.ProduceClassMetadata(IReflectClass claxx)
   at Db4objects.Db4o.Internal.Serializer.Marshall(ObjectContainerBase serviceProvider, Object obj)
   at Db4objects.Db4o.Internal.Serializer.Marshall(Transaction ta, Object obj)
   at Db4objects.Db4o.CS.Internal.ClientObjectContainer.ExecuteQuery(QQuery query)
   at Db4objects.Db4o.Internal.Query.Processor.QQueryBase.GetQueryResult()
   at Db4objects.Db4o.Internal.Query.Processor.QQueryBase._IClosure4_331.Run()
   at Db4objects.Db4o.Internal.Query.Processor.QQueryBase.TriggeringQueryEvents(IClosure4 closure)
   at Db4objects.Db4o.Internal.Query.Processor.QQueryBase.Execute()

[COR-2045] ext().openSession() throws NullPointerException instead of DatabaseClosedException

Tue, 7 Sep 2010 16:47:10 +0000 (GMT)

Expect a DatabaseClosedException when using a closed container. But ext().openSession() throws a NullPointer instead:

ObjectContainer container = Db4oEmbedded.openFile("database.db4o");
container.close();
// expect a DatabaseClosedException but get a NullPointerException
container.ext().openSession();

[COR-2044] Catch UniqueFieldValueConstraintViolationException

Duplicate — Tue, 7 Sep 2010 16:48:13 +0000 (GMT)

Exception caught when you create a previously deleted object, which contains the field's value equal to the deleted object field. This exception is captured only with the version of db4o db4o-8.0.156.14687. With version 7.12 works correctly.

[COR-2043] [.Net] Introduce abastraction to encapsulate platform differences

Tue, 24 Aug 2010 15:36:27 +0000 (GMT)

This can be simillar to Jdk class family. This way we can get rid of all #if checks in the core

[COR-2042] Add option : Query query = container.query(QueryEvaluationMode.LAZY) ;

Tue, 24 Aug 2010 15:37:29 +0000 (GMT)

add this option in SODA queries in a bloc of Java.
This will be just for one query, without impact on the basic configuration.
This ability would be very useful to close the COR-202 about paging request use for reporting (no update) or for screen select an object in a list.

[COR-2041] Write testcases for PausableBlockingQueue and move it to foundation package

Fri, 20 Aug 2010 17:12:18 +0000 (GMT)

Write testcases for PausableBlockingQueue and move it to foundation package

[COR-2040] Queries in a Callback for a Type with an enum throws an IllegalStateException

Related — Tue, 24 Aug 2010 15:39:07 +0000 (GMT)

When you try to query for some data in a creating-callback it fails. Happens when the type contains an enum. With primitive-types it works.

See attached test-cases.

1) info.gamlor.db4oforum.QueryInCallbackEmbedded.testSingleStore: com.db4o.ext.Db4oIllegalStateException: Objects must not be updated in callback
at com.db4o.internal.ObjectContainerBase.assertNotInCallback(ObjectContainerBase.java:1729)
at com.db4o.internal.ObjectContainerBase.store3(ObjectContainerBase.java:1709)
at com.db4o.internal.ObjectContainerBase.store2(ObjectContainerBase.java:1635)
at com.db4o.internal.ObjectContainerBase.storeAfterReplication(ObjectContainerBase.java:1617)
at com.db4o.internal.ObjectContainerBase$10.apply(ObjectContainerBase.java:1603)
at com.db4o.internal.ObjectContainerBase$10.apply(ObjectContainerBase.java:1601)
at com.db4o.internal.ObjectContainerBase.asTopLevelCall(ObjectContainerBase.java:426)
at com.db4o.internal.ObjectContainerBase.asTopLevelStore(ObjectContainerBase.java:412)
at com.db4o.internal.ObjectContainerBase.storeInternal(ObjectContainerBase.java:1601)
at com.db4o.internal.marshall.MarshallingContext.writeObject(MarshallingContext.java:252)
at com.db4o.internal.OpenTypeHandler.writeObject(OpenTypeHandler.java:264)
at com.db4o.internal.OpenTypeHandler.write(OpenTypeHandler.java:249)
at com.db4o.internal.marshall.MarshallingContext.writeObjectWithCurrentState(MarshallingContext.java:272)
at com.db4o.internal.marshall.MarshallingContext.writeObject(MarshallingContext.java:260)
at com.db4o.internal.handlers.array.ArrayHandler.writeElements(ArrayHandler.java:422)
at com.db4o.internal.handlers.array.ArrayHandler.write(ArrayHandler.java:407)
at com.db4o.internal.OpenTypeHandler.writeObject(OpenTypeHandler.java:266)
at com.db4o.internal.OpenTypeHandler.write(OpenTypeHandler.java:249)
at com.db4o.internal.marshall.MarshallingContext.writeObjectWithCurrentState(MarshallingContext.java:272)
at com.db4o.internal.FieldMetadata.marshall(FieldMetadata.java:769)
at com.db4o.internal.handlers.StandardReferenceTypeHandler$4.processAspect(StandardReferenceTypeHandler.java:154)
at com.db4o.internal.metadata.MarshallingInfoTraverseAspectCommand.processAspect(MarshallingInfoTraverseAspectCommand.java:52)
at com.db4o.internal.metadata.StandardAspectTraversalStrategy.traverseAllAspects(StandardAspectTraversalStrategy.java:24)
at com.db4o.internal.ClassMetadata.traverseAllAspects(ClassMetadata.java:2065)
at com.db4o.internal.handlers.StandardReferenceTypeHandler.traverseAllAspects(StandardReferenceTypeHandler.java:247)
at com.db4o.internal.handlers.StandardReferenceTypeHandler.marshallAspects(StandardReferenceTypeHandler.java:162)
at com.db4o.internal.handlers.StandardReferenceTypeHandler.write(StandardReferenceTypeHandler.java:122)
at com.db4o.internal.Handlers4.write(Handlers4.java:305)
at com.db4o.internal.ObjectReference.continueSet(ObjectReference.java:171)
at com.db4o.internal.ObjectContainerBase.stillToSet(ObjectContainerBase.java:1884)
at com.db4o.internal.ObjectContainerBase.store3(ObjectContainerBase.java:1705)
at com.db4o.internal.ObjectContainerBase.store2(ObjectContainerBase.java:1635)
at com.db4o.internal.ObjectContainerBase.storeAfterReplication(ObjectContainerBase.java:1617)
at com.db4o.internal.ObjectContainerBase$10.apply(ObjectContainerBase.java:1603)
at com.db4o.internal.ObjectContainerBase$10.apply(ObjectContainerBase.java:1601)
at com.db4o.internal.ObjectContainerBase.asTopLevelCall(ObjectContainerBase.java:426)
at com.db4o.internal.ObjectContainerBase.asTopLevelStore(ObjectContainerBase.java:412)
at com.db4o.internal.ObjectContainerBase.storeInternal(ObjectContainerBase.java:1601)
at com.db4o.internal.marshall.MarshallingContext.writeObject(MarshallingContext.java:252)
at com.db4o.internal.marshall.MarshallingContext.writeObjectWithCurrentState(MarshallingContext.java:266)
at com.db4o.internal.marshall.MarshallingContext.writeObject(MarshallingContext.java:260)
at com.db4o.internal.handlers.array.ArrayHandler.writeElements(ArrayHandler.java:422)
at com.db4o.internal.handlers.array.ArrayHandler.write(ArrayHandler.java:407)
at com.db4o.internal.marshall.MarshallingContext.writeObjectWithCurrentState(MarshallingContext.java:272)
at com.db4o.internal.FieldMetadata.marshall(FieldMetadata.java:769)
at com.db4o.internal.handlers.StandardReferenceTypeHandler$4.processAspect(StandardReferenceTypeHandler.java:154)
at com.db4o.internal.metadata.MarshallingInfoTraverseAspectCommand.processAspect(MarshallingInfoTraverseAspectCommand.java:52)
at com.db4o.internal.metadata.StandardAspectTraversalStrategy.traverseAllAspects(StandardAspectTraversalStrategy.java:24)
at com.db4o.internal.ClassMetadata.traverseAllAspects(ClassMetadata.java:2065)
at com.db4o.internal.handlers.StandardReferenceTypeHandler.traverseAllAspects(StandardReferenceTypeHandler.java:247)
at com.db4o.internal.handlers.StandardReferenceTypeHandler.marshallAspects(StandardReferenceTypeHandler.java:162)
at com.db4o.internal.handlers.StandardReferenceTypeHandler.write(StandardReferenceTypeHandler.java:122)
at com.db4o.internal.Handlers4.write(Handlers4.java:305)
at com.db4o.internal.ObjectReference.continueSet(ObjectReference.java:171)
at com.db4o.internal.ObjectContainerBase.stillToSet(ObjectContainerBase.java:1884)
at com.db4o.internal.ObjectContainerBase.store3(ObjectContainerBase.java:1705)
at com.db4o.internal.ObjectContainerBase.store2(ObjectContainerBase.java:1635)
at com.db4o.internal.ObjectContainerBase.storeAfterReplication(ObjectContainerBase.java:1617)
at com.db4o.internal.ObjectContainerBase$10.apply(ObjectContainerBase.java:1603)
at com.db4o.internal.ObjectContainerBase$10.apply(ObjectContainerBase.java:1601)
at com.db4o.internal.ObjectContainerBase.asTopLevelCall(ObjectContainerBase.java:426)
at com.db4o.internal.ObjectContainerBase.asTopLevelStore(ObjectContainerBase.java:412)
at com.db4o.internal.ObjectContainerBase.storeInternal(ObjectContainerBase.java:1601)
at com.db4o.internal.ObjectContainerBase.storeInternal(ObjectContainerBase.java:1593)
at com.db4o.internal.ClassMetadata.setStaticClass(ClassMetadata.java:1792)
at com.db4o.internal.ClassMetadata.createStaticClass(ClassMetadata.java:1769)
at com.db4o.internal.ClassMetadata.storeStaticFieldValues(ClassMetadata.java:1721)
at com.db4o.internal.PendingClassInits.checkStatics(PendingClassInits.java:65)
at com.db4o.internal.PendingClassInits.checkWrites(PendingClassInits.java:72)
at com.db4o.internal.PendingClassInits.checkInits(PendingClassInits.java:83)
at com.db4o.internal.PendingClassInits.process(PendingClassInits.java:45)
at com.db4o.internal.ClassMetadataRepository.produceClassMetadata(ClassMetadataRepository.java:229)
at com.db4o.internal.ObjectContainerBase.produceClassMetadata(ObjectContainerBase.java:1018)
at com.db4o.internal.query.processor.QConClass.<init>(QConClass.java:35)
at com.db4o.internal.query.processor.QConClass.<init>(QConClass.java:44)
at com.db4o.internal.query.processor.QQueryBase.addClassConstraint(QQueryBase.java:177)
at com.db4o.internal.query.processor.QQueryBase.constrain(QQueryBase.java:130)
at com.db4o.internal.ObjectContainerBase.queryByExampleInternal(ObjectContainerBase.java:826)
at com.db4o.internal.ObjectContainerBase.access$400(ObjectContainerBase.java:38)
at com.db4o.internal.ObjectContainerBase$7.apply(ObjectContainerBase.java:814)
at com.db4o.internal.ObjectContainerBase$7.apply(ObjectContainerBase.java:812)
at com.db4o.internal.ObjectContainerBase.asTopLevelCall(ObjectContainerBase.java:426)
at com.db4o.internal.ObjectContainerBase.queryByExample(ObjectContainerBase.java:812)
at com.db4o.internal.ExternalObjectContainer.queryByExample(ExternalObjectContainer.java:68)
at com.db4o.internal.ExternalObjectContainer.query(ExternalObjectContainer.java:112)
at info.gamlor.db4oforum.QueryInCallbackEmbedded$1.onEvent(QueryInCallbackEmbedded.java:81)
at info.gamlor.db4oforum.QueryInCallbackEmbedded$1.onEvent(QueryInCallbackEmbedded.java:76)
at com.db4o.internal.events.Event4Impl.trigger(Event4Impl.java:78)
at com.db4o.internal.events.EventRegistryImpl$8.run(EventRegistryImpl.java:260)
at com.db4o.foundation.DynamicVariable.with(DynamicVariable.java:47)
at com.db4o.internal.InCallback.run(InCallback.java:24)
at com.db4o.internal.events.EventRegistryImpl.withExceptionHandlingInCallback(EventRegistryImpl.java:279)
at com.db4o.internal.events.EventRegistryImpl.triggerCancellableObjectEventArgsInCallback(EventRegistryImpl.java:258)
at com.db4o.internal.events.EventRegistryImpl.objectCanNew(EventRegistryImpl.java:65)
at com.db4o.internal.ObjectContainerBase.objectCanNew(ObjectContainerBase.java:1734)
at com.db4o.internal.ObjectContainerBase.store3(ObjectContainerBase.java:1691)
at com.db4o.internal.ObjectContainerBase.store2(ObjectContainerBase.java:1635)
at com.db4o.internal.ObjectContainerBase.storeAfterReplication(ObjectContainerBase.java:1617)
at com.db4o.internal.ObjectContainerBase$10.apply(ObjectContainerBase.java:1603)
at com.db4o.internal.ObjectContainerBase$10.apply(ObjectContainerBase.java:1601)
at com.db4o.internal.ObjectContainerBase.asTopLevelCall(ObjectContainerBase.java:426)
at com.db4o.internal.ObjectContainerBase.asTopLevelStore(ObjectContainerBase.java:412)
at com.db4o.internal.ObjectContainerBase.storeInternal(ObjectContainerBase.java:1601)
at com.db4o.internal.ObjectContainerBase.store(ObjectContainerBase.java:1583)
at com.db4o.internal.ExternalObjectContainer.store(ExternalObjectContainer.java:154)
at com.db4o.internal.ExternalObjectContainer.store(ExternalObjectContainer.java:141)
at info.gamlor.db4oforum.QueryInCallbackEmbedded.testSingleStore(QueryInCallbackEmbedded.java:30)
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 db4ounit.TestMethod.invoke(TestMethod.java:65)
at db4ounit.TestMethod.run(TestMethod.java:43)
at db4ounit.ContextfulTest$3.run(ContextfulTest.java:36)
at com.db4o.foundation.DynamicVariable.with(DynamicVariable.java:47)
at db4ounit.fixtures.FixtureContext.run(FixtureContext.java:33)
at db4ounit.fixtures.Contextful.run(Contextful.java:20)
at db4ounit.ContextfulTest.run(ContextfulTest.java:34)
at db4ounit.TestRunner.runTest(TestRunner.java:44)
at db4ounit.TestRunner.access$000(TestRunner.java:7)
at db4ounit.TestRunner$2.run(TestRunner.java:32)
at com.db4o.foundation.DynamicVariable.with(DynamicVariable.java:47)
at com.db4o.foundation.Environments.runWith(Environments.java:28)
at db4ounit.TestRunner.run(TestRunner.java:28)
at db4ounit.ConsoleTestRunner.run(ConsoleTestRunner.java:48)
at db4ounit.ConsoleTestRunner.run(ConsoleTestRunner.java:37)
at info.gamlor.db4oforum.QueryInCallbackEmbedded.main(QueryInCallbackEmbedded.java:24)

[COR-2039] Reading in a creating-callback throws an IllegalStateException in C/S

Dependencies — Tue, 24 Aug 2010 15:40:04 +0000 (GMT)

When you try to query for some data in a creating-callback it fails. Happens in C/S-Mode.

See attached test-cases.

Stack-Trace:

1) info.gamlor.db4oforum.QueryInCallBackCSCallback.testCreatingCallbackUnknownMetaData: com.db4o.ext.Db4oIllegalStateException: Objects must not be updated in callback
at com.db4o.internal.ObjectContainerBase.assertNotInCallback(ObjectContainerBase.java:1729)
at com.db4o.internal.ObjectContainerBase.store3(ObjectContainerBase.java:1709)
at com.db4o.internal.ObjectContainerBase.store2(ObjectContainerBase.java:1635)
at com.db4o.internal.ObjectContainerBase.storeAfterReplication(ObjectContainerBase.java:1617)
at com.db4o.internal.ObjectContainerBase$10.apply(ObjectContainerBase.java:1603)
at com.db4o.internal.ObjectContainerBase$10.apply(ObjectContainerBase.java:1601)
at com.db4o.internal.ObjectContainerBase.asTopLevelCall(ObjectContainerBase.java:426)
at com.db4o.internal.ObjectContainerBase.asTopLevelStore(ObjectContainerBase.java:412)
at com.db4o.internal.ObjectContainerBase.storeInternal(ObjectContainerBase.java:1601)
at com.db4o.internal.TransportObjectContainer.storeInternal(TransportObjectContainer.java:219)
at com.db4o.internal.marshall.MarshallingContext.writeObject(MarshallingContext.java:252)
at com.db4o.internal.marshall.MarshallingContext.writeObjectWithCurrentState(MarshallingContext.java:266)
at com.db4o.internal.FieldMetadata.marshall(FieldMetadata.java:769)
at com.db4o.internal.handlers.StandardReferenceTypeHandler$4.processAspect(StandardReferenceTypeHandler.java:154)
at com.db4o.internal.metadata.MarshallingInfoTraverseAspectCommand.processAspect(MarshallingInfoTraverseAspectCommand.java:52)
at com.db4o.internal.metadata.StandardAspectTraversalStrategy.traverseAllAspects(StandardAspectTraversalStrategy.java:24)
at com.db4o.internal.ClassMetadata.traverseAllAspects(ClassMetadata.java:2065)
at com.db4o.internal.handlers.StandardReferenceTypeHandler.traverseAllAspects(StandardReferenceTypeHandler.java:247)
at com.db4o.internal.handlers.StandardReferenceTypeHandler.marshallAspects(StandardReferenceTypeHandler.java:162)
at com.db4o.internal.handlers.StandardReferenceTypeHandler.write(StandardReferenceTypeHandler.java:122)
at com.db4o.internal.Handlers4.write(Handlers4.java:305)
at com.db4o.internal.ObjectReference.continueSet(ObjectReference.java:171)
at com.db4o.internal.ObjectContainerBase.stillToSet(ObjectContainerBase.java:1884)
at com.db4o.internal.ObjectContainerBase.store3(ObjectContainerBase.java:1705)
at com.db4o.internal.ObjectContainerBase.store2(ObjectContainerBase.java:1635)
at com.db4o.internal.ObjectContainerBase.storeAfterReplication(ObjectContainerBase.java:1617)
at com.db4o.internal.ObjectContainerBase$10.apply(ObjectContainerBase.java:1603)
at com.db4o.internal.ObjectContainerBase$10.apply(ObjectContainerBase.java:1601)
at com.db4o.internal.ObjectContainerBase.asTopLevelCall(ObjectContainerBase.java:426)
at com.db4o.internal.ObjectContainerBase.asTopLevelStore(ObjectContainerBase.java:412)
at com.db4o.internal.ObjectContainerBase.storeInternal(ObjectContainerBase.java:1601)
at com.db4o.internal.TransportObjectContainer.storeInternal(TransportObjectContainer.java:219)
at com.db4o.internal.marshall.MarshallingContext.writeObject(MarshallingContext.java:252)
at com.db4o.internal.marshall.MarshallingContext.writeObjectWithCurrentState(MarshallingContext.java:266)
at com.db4o.internal.FieldMetadata.marshall(FieldMetadata.java:769)
at com.db4o.internal.handlers.StandardReferenceTypeHandler$4.processAspect(StandardReferenceTypeHandler.java:154)
at com.db4o.internal.metadata.MarshallingInfoTraverseAspectCommand.processAspect(MarshallingInfoTraverseAspectCommand.java:52)
at com.db4o.internal.metadata.StandardAspectTraversalStrategy.traverseAllAspects(StandardAspectTraversalStrategy.java:24)
at com.db4o.internal.ClassMetadata.traverseAllAspects(ClassMetadata.java:2065)
at com.db4o.internal.handlers.StandardReferenceTypeHandler.traverseAllAspects(StandardReferenceTypeHandler.java:247)
at com.db4o.internal.handlers.StandardReferenceTypeHandler.marshallAspects(StandardReferenceTypeHandler.java:162)
at com.db4o.internal.handlers.StandardReferenceTypeHandler.write(StandardReferenceTypeHandler.java:122)
at com.db4o.internal.Handlers4.write(Handlers4.java:305)
at com.db4o.internal.ObjectReference.continueSet(ObjectReference.java:171)
at com.db4o.internal.ObjectContainerBase.stillToSet(ObjectContainerBase.java:1884)
at com.db4o.internal.ObjectContainerBase.store3(ObjectContainerBase.java:1705)
at com.db4o.internal.ObjectContainerBase.store2(ObjectContainerBase.java:1635)
at com.db4o.internal.ObjectContainerBase.storeAfterReplication(ObjectContainerBase.java:1617)
at com.db4o.internal.ObjectContainerBase$10.apply(ObjectContainerBase.java:1603)
at com.db4o.internal.ObjectContainerBase$10.apply(ObjectContainerBase.java:1601)
at com.db4o.internal.ObjectContainerBase.asTopLevelCall(ObjectContainerBase.java:426)
at com.db4o.internal.ObjectContainerBase.asTopLevelStore(ObjectContainerBase.java:412)
at com.db4o.internal.ObjectContainerBase.storeInternal(ObjectContainerBase.java:1601)
at com.db4o.internal.TransportObjectContainer.storeInternal(TransportObjectContainer.java:219)
at com.db4o.internal.ObjectContainerBase.store(ObjectContainerBase.java:1583)
at com.db4o.internal.ExternalObjectContainer.store(ExternalObjectContainer.java:154)
at com.db4o.internal.ExternalObjectContainer.store(ExternalObjectContainer.java:141)
at com.db4o.internal.Serializer.marshall(Serializer.java:26)
at com.db4o.internal.Serializer.marshall(Serializer.java:15)
at com.db4o.cs.internal.ClientObjectContainer.executeQuery(ClientObjectContainer.java:982)
at com.db4o.internal.ObjectContainerBase.queryByExampleInternal(ObjectContainerBase.java:827)
at com.db4o.internal.ObjectContainerBase.access$400(ObjectContainerBase.java:38)
at com.db4o.internal.ObjectContainerBase$7.apply(ObjectContainerBase.java:814)
at com.db4o.internal.ObjectContainerBase$7.apply(ObjectContainerBase.java:812)
at com.db4o.internal.ObjectContainerBase.asTopLevelCall(ObjectContainerBase.java:426)
at com.db4o.internal.ObjectContainerBase.queryByExample(ObjectContainerBase.java:812)
at com.db4o.internal.ExternalObjectContainer.queryByExample(ExternalObjectContainer.java:68)
at com.db4o.internal.ExternalObjectContainer.query(ExternalObjectContainer.java:112)
at info.gamlor.db4oforum.QueryInCallBackCSCallback$1.onEvent(QueryInCallBackCSCallback.java:72)
at info.gamlor.db4oforum.QueryInCallBackCSCallback$1.onEvent(QueryInCallBackCSCallback.java:67)
at com.db4o.internal.events.Event4Impl.trigger(Event4Impl.java:78)
at com.db4o.internal.events.EventRegistryImpl$8.run(EventRegistryImpl.java:260)
at com.db4o.foundation.DynamicVariable.with(DynamicVariable.java:47)
at com.db4o.internal.InCallback.run(InCallback.java:24)
at com.db4o.internal.events.EventRegistryImpl.withExceptionHandlingInCallback(EventRegistryImpl.java:279)
at com.db4o.internal.events.EventRegistryImpl.triggerCancellableObjectEventArgsInCallback(EventRegistryImpl.java:258)
at com.db4o.internal.events.EventRegistryImpl.objectCanNew(EventRegistryImpl.java:65)
at com.db4o.internal.ObjectContainerBase.objectCanNew(ObjectContainerBase.java:1734)
at com.db4o.internal.ObjectContainerBase.store3(ObjectContainerBase.java:1691)
at com.db4o.internal.ObjectContainerBase.store2(ObjectContainerBase.java:1635)
at com.db4o.internal.ObjectContainerBase.storeAfterReplication(ObjectContainerBase.java:1617)
at com.db4o.internal.ObjectContainerBase$10.apply(ObjectContainerBase.java:1603)
at com.db4o.internal.ObjectContainerBase$10.apply(ObjectContainerBase.java:1601)
at com.db4o.internal.ObjectContainerBase.asTopLevelCall(ObjectContainerBase.java:426)
at com.db4o.internal.ObjectContainerBase.asTopLevelStore(ObjectContainerBase.java:412)
at com.db4o.internal.ObjectContainerBase.storeInternal(ObjectContainerBase.java:1601)
at com.db4o.internal.ObjectContainerBase.store(ObjectContainerBase.java:1583)
at com.db4o.internal.ExternalObjectContainer.store(ExternalObjectContainer.java:154)
at com.db4o.internal.ExternalObjectContainer.store(ExternalObjectContainer.java:141)
at info.gamlor.db4oforum.QueryInCallBackCSCallback.testCreatingCallbackUnknownMetaData(QueryInCallBackCSCallback.java:34)
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 db4ounit.TestMethod.invoke(TestMethod.java:65)
at db4ounit.TestMethod.run(TestMethod.java:43)
at db4ounit.ContextfulTest$3.run(ContextfulTest.java:36)
at com.db4o.foundation.DynamicVariable.with(DynamicVariable.java:47)
at db4ounit.fixtures.FixtureContext.run(FixtureContext.java:33)
at db4ounit.fixtures.Contextful.run(Contextful.java:20)
at db4ounit.ContextfulTest.run(ContextfulTest.java:34)
at db4ounit.TestRunner.runTest(TestRunner.java:44)
at db4ounit.TestRunner.access$000(TestRunner.java:7)
at db4ounit.TestRunner$2.run(TestRunner.java:32)
at com.db4o.foundation.DynamicVariable.with(DynamicVariable.java:47)
at com.db4o.foundation.Environments.runWith(Environments.java:28)
at db4ounit.TestRunner.run(TestRunner.java:28)
at db4ounit.ConsoleTestRunner.run(ConsoleTestRunner.java:48)
at db4ounit.ConsoleTestRunner.run(ConsoleTestRunner.java:37)
at info.gamlor.db4oforum.QueryInCallBackCSCallback.main(QueryInCallBackCSCallback.java:27)

[COR-2038] Have temporary file outside container may be useful for queries, volatile activty, log,.. of big databases

Tue, 17 Aug 2010 16:10:07 +0000 (GMT)

For increase management and sometime speed of big databases, put outside the database the space used by queries and other volatile traitements, in speed temporary file (like tmpfs/swapfile).
Option(s) in configuration manage default properties .
This may also contribute to solve unexpected 'heap space' problems.

See discussion on http://developer.db4o.com/Forums/tabid/98/aft/10124/Default.aspx

[COR-2037] Duplicate field index entries for updates in TP mode

Resulted — Tue, 17 Aug 2010 15:00:20 +0000 (GMT)

In ObjectReference, the field index entries are purged only conditionally upon updates, depending on the update depth implementation. Field index additions however are triggered unconditionally through the MarshallingContext. This can lead to duplicate field index entries (and thus false positives with unique constraint support switched on as a visible symptom).

[COR-2036] Fix SaveAsStorageTestCase spurious failures, seen last on JDK 1.1

Tue, 17 Aug 2010 16:11:44 +0000 (GMT)

Last failure

1) (SOLO) com.db4o.db4ounit.common.io.SaveAsStorageTestCase.testSaveAsTwice: com.db4o.ext.EmergencyShutdownReadOnlyException

at com.db4o.io.BlockAwareBin.validateReadOnly(BlockAwareBin.java:183)

at com.db4o.io.BlockAwareBin.sync(BlockAwareBin.java:159)

at com.db4o.internal.IoAdaptedObjectContainer.syncFiles(IoAdaptedObjectContainer.java:256)

at com.db4o.internal.ids.InMemoryIdSystem.writeThis(InMemoryIdSystem.java:145)

at com.db4o.internal.ids.InMemoryIdSystem.commit(InMemoryIdSystem.java:84)

at com.db4o.internal.ids.TransactionalIdSystemImpl.commit(TransactionalIdSystemImpl.java:59)

at com.db4o.internal.ids.BTreeIdSystem.commit(BTreeIdSystem.java:162)

at com.db4o.internal.ids.TransactionalIdSystemImpl.commit(TransactionalIdSystemImpl.java:59)

at com.db4o.internal.ids.BTreeIdSystem.commit(BTreeIdSystem.java:162)

at com.db4o.internal.ids.TransactionalIdSystemImpl.commit(TransactionalIdSystemImpl.java:59)

at com.db4o.internal.LocalTransaction.commitImpl(LocalTransaction.java:122)

at com.db4o.internal.LocalTransaction.commit(LocalTransaction.java:61)

at com.db4o.internal.LocalTransaction.commit(LocalTransaction.java:51)

at com.db4o.internal.LocalObjectContainer.commit1(LocalObjectContainer.java:104)

at com.db4o.internal.IoAdaptedObjectContainer.commit1(IoAdaptedObjectContainer.java:170)

at com.db4o.internal.ObjectContainerBase$3.apply(ObjectContainerBase.java:401)

at com.db4o.internal.ObjectContainerBase.asTopLevelCall(ObjectContainerBase.java:425)

at com.db4o.internal.ObjectContainerBase.commit(ObjectContainerBase.java:399)

at com.db4o.internal.ExternalObjectContainer.commit(ExternalObjectContainer.java:41)

at com.db4o.db4ounit.common.io.SaveAsStorageTestCase.testSaveAsTwice(SaveAsStorageTestCase.java:84)

at java.lang.reflect.Method.invoke(Native Method)

at db4ounit.TestMethod.invoke(TestMethod.java:65)

at db4ounit.TestMethod.run(TestMethod.java:43)

at db4ounit.TestDecorationAdapter.run(TestDecorationAdapter.java:20)

at db4ounit.ContextfulTest$3.run(ContextfulTest.java:36)

at com.db4o.foundation.DynamicVariable.with(DynamicVariable.java:54)

at db4ounit.fixtures.FixtureContext.run(FixtureContext.java:33)

at db4ounit.fixtures.Contextful.run(Contextful.java:20)

at db4ounit.ContextfulTest.run(ContextfulTest.java:34)

at db4ounit.TestRunner.runTest(TestRunner.java:44)

at db4ounit.TestRunner.access$000(TestRunner.java:7)

at db4ounit.TestRunner$2.run(TestRunner.java:32)

at com.db4o.foundation.DynamicVariable.with(DynamicVariable.java:54)

at com.db4o.foundation.Environments.runWith(Environments.java:28)

at db4ounit.TestRunner.run(TestRunner.java:28)

at db4ounit.ConsoleTestRunner.run(ConsoleTestRunner.java:48)

at db4ounit.ConsoleTestRunner.run(ConsoleTestRunner.java:37)

at db4ounit.extensions.AbstractDb4oTestCase.runAll(AbstractDb4oTestCase.java:122)

at com.db4o.db4ounit.jre11.AllTests.main(AllTests.java:10)

[COR-2035] Implement ImmutableFieldClassLoader for Prototypes and QLin

Sun, 8 Aug 2010 18:15:42 +0000 (GMT)

Implement ImmutableFieldClassLoader for Prototypes and QLin

[COR-2034] QLin typesafe query interface prototype (for dRS queries for now)

Sat, 7 Aug 2010 23:53:59 +0000 (GMT)

QLin typesafe query interface prototype (for dRS queries for now)

[COR-2033] [.Net] Investigate reports of db4otool failing in .Net 4.0

Tue, 24 Aug 2010 15:47:19 +0000 (GMT)

Reports on forum: http://developer.db4o.com/Forums/tabid/98/aft/10002/Default.aspx#28759

[COR-2032] [Silverlight] Configure isolated storage transparently

Dependencies — Tue, 17 Aug 2010 15:53:30 +0000 (GMT)

We should either introduce a configuration item or detect the platform and configure the platform accordingly.

[COR-2029] Track back references to an object

Tue, 3 Aug 2010 16:01:10 +0000 (GMT)

Back references could be stored in a BTree index.

This would be useful for referential integrity and for checking if an object can be deleted.

[COR-2028] Delete by ID

Related — Wed, 4 Aug 2010 09:30:11 +0000 (GMT)

Delete by ID

[COR-2026] StringBuffer.lenght is differently defined (Sharpen)

Tue, 3 Aug 2010 16:07:25 +0000 (GMT)

I find that Sharpen maps java.langStringBuffer.length() to System.Text.StringBuilder.Length, but the they are differently defined. The following code shows the difference.
Java:
StringBuffer obj = new StringBuffer();
int out = obj.insert(0, (Object)null).length();//out is 4
C#:
System.Text.StringBuilder obj = new System.Text.StringBuilder();
int out = obj.Insert(0, (object)null).Length;//out is 0
Can Sharpen hide the difference?

[COR-2025] More database corruption.

Similar — Tue, 7 Sep 2010 16:48:55 +0000 (GMT)

I'm actually using version:
8.0.158.14716

Deleted by database file before launching the application; so it's definitely not outdated.

S3MediaData looks like this:

{code}
public class S3MediaData implements MediaData<S3Media> {
    private final S3Media media;
    private final Map<Quality, S3Object> s3Objects;

    ...
}
{code}

The thing works; but suddenly, amidst a scheduled job, the database file got corrupted and tried to assign the HashMap to the media field instead of the s3Objects field:

{code}
com.db4o.ext.Db4oException: JDKField com.lyndir.lhunath.snaplog.data.object.media.aws.S3Media:media
        at com.db4o.reflect.jdk.JdkField.handleException(JdkField.java:82) [db4o-core-java5-8.0-SNAPSHOT.jar:na]
        at com.db4o.reflect.jdk.JdkField.set(JdkField.java:64) [db4o-core-java5-8.0-SNAPSHOT.jar:na]
        at com.db4o.internal.reflect.StrictFieldAccessor.set(StrictFieldAccessor.java:17) [db4o-core-java5-8.0-SNAPSHOT.jar:na]
        at com.db4o.internal.FieldMetadata.set(FieldMetadata.java:839) [db4o-core-java5-8.0-SNAPSHOT.jar:na]
        at com.db4o.internal.FieldMetadata.activate(FieldMetadata.java:646) [db4o-core-java5-8.0-SNAPSHOT.jar:na]
        at com.db4o.internal.handlers.StandardReferenceTypeHandler$2.processAspect(StandardReferenceTypeHandler.java:92) [db4o-core-java5-8.0-SNAPSHOT.jar:na] at com.db4o.internal.metadata.MarshallingInfoTraverseAspectCommand.processAspect(MarshallingInfoTraverseAspectCommand.java:52) [db4o-core-java5-8.0-SNAPSHOT.jar:na] at com.db4o.internal.metadata.StandardAspectTraversalStrategy.traverseAllAspects(StandardAspectTraversalStrategy.java:24) [db4o-core-java5-8.0-SNAPSHOT.jar:na] at com.db4o.internal.ClassMetadata.traverseAllAspects(ClassMetadata.java:2065) [db4o-core-java5-8.0-SNAPSHOT.jar:na] at com.db4o.internal.handlers.StandardReferenceTypeHandler.traverseAllAspects(StandardReferenceTypeHandler.java:247) [db4o-core-java5-8.0-SNAPSHOT.jar:na] at com.db4o.internal.handlers.StandardReferenceTypeHandler.activateAspects(StandardReferenceTypeHandler.java:95) [db4o-core-java5-8.0-SNAPSHOT.jar:na] at com.db4o.internal.handlers.StandardReferenceTypeHandler.activate(StandardReferenceTypeHandler.java:118) [db4o-core-java5-8.0-SNAPSHOT.jar:na] at com.db4o.internal.Handlers4.activate(Handlers4.java:300) [db4o-core-java5-8.0-SNAPSHOT.jar:na] at com.db4o.internal.ClassMetadata.instantiateFields(ClassMetadata.java:1302) [db4o-core-java5-8.0-SNAPSHOT.jar:na]
        at com.db4o.internal.ClassMetadata.activate(ClassMetadata.java:1236) [db4o-core-java5-8.0-SNAPSHOT.jar:na]
        at com.db4o.internal.ClassMetadata.instantiate(ClassMetadata.java:1184) [db4o-core-java5-8.0-SNAPSHOT.jar:na]
        at com.db4o.internal.marshall.UnmarshallingContext.read(UnmarshallingContext.java:70) [db4o-core-java5-8.0-SNAPSHOT.jar:na]
        at com.db4o.internal.ObjectReference.read(ObjectReference.java:304) [db4o-core-java5-8.0-SNAPSHOT.jar:na]
        at com.db4o.internal.ObjectReference.read(ObjectReference.java:290) [db4o-core-java5-8.0-SNAPSHOT.jar:na]
        at com.db4o.internal.ObjectContainerBase$8.apply(ObjectContainerBase.java:897) [db4o-core-java5-8.0-SNAPSHOT.jar:na]
        at com.db4o.internal.ObjectContainerBase$8.apply(ObjectContainerBase.java:895) [db4o-core-java5-8.0-SNAPSHOT.jar:na]
        at com.db4o.internal.ObjectContainerBase.asTopLevelCall(ObjectContainerBase.java:427) [db4o-core-java5-8.0-SNAPSHOT.jar:na]
        at com.db4o.internal.ObjectContainerBase.readActivatedObjectNotInCache(ObjectContainerBase.java:895) [db4o-core-java5-8.0-SNAPSHOT.jar:na]
        at com.db4o.internal.query.result.AbstractQueryResult.activatedObject(AbstractQueryResult.java:34) [db4o-core-java5-8.0-SNAPSHOT.jar:na]
        at com.db4o.internal.query.result.AbstractQueryResult$1.map(AbstractQueryResult.java:62) [db4o-core-java5-8.0-SNAPSHOT.jar:na]
        at com.db4o.foundation.MappingIterator.moveNext(MappingIterator.java:30) [db4o-core-java5-8.0-SNAPSHOT.jar:na] at com.db4o.foundation.Iterable4Adaptor.moveNext(Iterable4Adaptor.java:46) [db4o-core-java5-8.0-SNAPSHOT.jar:na]
        at com.db4o.internal.query.ObjectSetFacade$JDKIterator.moveNext(ObjectSetFacade.java:42) [db4o-core-java5-8.0-SNAPSHOT.jar:na]
        at com.db4o.foundation.Iterable4Adaptor.hasNext(Iterable4Adaptor.java:28) [db4o-core-java5-8.0-SNAPSHOT.jar:na]
        at com.lyndir.lhunath.snaplog.model.service.impl.AWSMediaProviderServiceImpl.loadMediaData(AWSMediaProviderServiceImpl.java:177) [classes/:na]
        at com.lyndir.lhunath.snaplog.model.service.impl.AWSMediaProviderServiceImpl.loadMediaData(AWSMediaProviderServiceImpl.java:72) [classes/:na]
        at com.lyndir.lhunath.snaplog.model.service.AlbumProvider.loadMediaData(AlbumProvider.java:70) [classes/:na]
        at com.lyndir.lhunath.snaplog.model.service.impl.AlbumServiceImpl.loadMediaData(AlbumServiceImpl.java:151) [classes/:na]
        at com.lyndir.lhunath.snaplog.model.service.impl.AlbumServiceImpl.loadAllAlbumMediaData(AlbumServiceImpl.java:165) [classes/:na]
        at com.lyndir.lhunath.snaplog.job.MediaDataSynchronizationJob.execute(MediaDataSynchronizationJob.java:32) [classes/:na]
        at org.quartz.core.JobRunShell.run(JobRunShell.java:199) [quartz-1.8.0.jar:na]
        at org.quartz.simpl.SimpleThreadPool$WorkerThread.run(SimpleThreadPool.java:549) [quartz-1.8.0.jar:na]
Caused by: java.lang.IllegalArgumentException: Can not set final com.lyndir.lhunath.snaplog.data.object.media.aws.S3Media field com.lyndir.lhunath.snaplog.data.object.media.aws.S3MediaData.media to java.util.HashMap
        at sun.reflect.UnsafeFieldAccessorImpl.throwSetIllegalArgumentException(UnsafeFieldAccessorImpl.java:146) [na:1.6.0_07]
        at sun.reflect.UnsafeFieldAccessorImpl.throwSetIllegalArgumentException(UnsafeFieldAccessorImpl.java:150) [na:1.6.0_07]
        at sun.reflect.UnsafeQualifiedObjectFieldAccessorImpl.set(UnsafeQualifiedObjectFieldAccessorImpl.java:65) [na:1.6.0_07]
        at java.lang.reflect.Field.set(Field.java:657) [na:1.6.0_07]
        at com.db4o.reflect.jdk.JdkField.set(JdkField.java:62) [db4o-core-java5-8.0-SNAPSHOT.jar:na]
        ... 35 common frames omitted
{code}

[COR-2023] Float.toString produces different values (Sharpen)

Tue, 3 Aug 2010 16:09:28 +0000 (GMT)

I find that Sharpen maps java.lang.Float.toString() to System.Single.ToString(), and the two methods produce different outputs as shown in the following code:
Java:
Float obj = new Float(0);
String out = obj.toString();//out is 0.0
C#
float obj = System.Convert.ToSingle(0);
String out = obj.ToString();//out is 0
Can Sharpen hide the difference?

[COR-2022] Alias order matters. If you first add the 'generic'-mappings and the more specific, it won't work.

Dependencies — Tue, 3 Aug 2010 16:12:35 +0000 (GMT)

Alias order matters. If you first add the 'generic'-mappings and the more specific, it won't work.

For example when you add:
old.package.name.* => new.package.name.*
old.package.name.ASpecificType => new.package.name.NewSpecificType

it wont work, because only the Wild-Card alias is used.

But when you reorder it, it works:
old.package.name.ASpecificType => new.package.name.NewSpecificType
old.package.name.* => new.package.name.*

Its annoying pitfall and it would be great if the order doesn't matter.

[COR-2021] [Android] Bloat support in android

Dependencies — Tue, 3 Aug 2010 16:12:30 +0000 (GMT)

[Android] Bloat support in android

[COR-2020] [Android] Investigate whether AndroidFileStorage is still required, remove it otherwise

Thu, 29 Jul 2010 19:30:15 +0000 (GMT)

[Android] Investigate whether AndroidFileStorage is still required, remove it otherwise

[COR-2018] [Android] ClassLoader.getResourceAsStream cant find the .class files in the .dex file in dalvikvm

Dependencies — Tue, 3 Aug 2010 14:55:03 +0000 (GMT)

The classes marked with OptOutClassLoadingIssue are the ones raising that issue. The problem is in ExcludingClassLoader.findRawClass in getResourceAsStream(resourcePath) call.

This will be required for runtime NQ optimization as well.

[COR-2017] Slot changes for static fields are enqueued twice for freespace by different id systems

Duplicate — Tue, 7 Sep 2010 16:48:13 +0000 (GMT)

For static fields (Java enums, in particular), slot changes may be produced by the user id system as well as the system id system: The change for the system id system will be triggered by #storeStaticFieldValues() when the class metadata is bootstrapped, any explicit user space #store() that directly or indirectly persists a static field value will introduce a slot change in the user id system.

Both these changes will be go into the list processed by the FreespaceCommitter, thus the slot will be freed twice. In connection with freespace merging, this will lead to bogus freespace entries:

FREED: [A:4340,L:98]
FREED: [A:4438,L:102] // merged as [4340, 200]
FREED: [A:4438,L:102] // adds a bogus overlapping freespace slot, so there's [4340, 200] and [4438, 102]

Perhaps this could be fixed by adding "set" characteristics to the FreespaceCommitter's list, but this sounds like merely fixing the symptom. Ideally, system id system slot changes should take precedence over user id system entries - this could be achieved by having the user id system query its parent, but this sounds awkward and slow, plus it implicitly relies on the order of events (i.e. system slot changes must always precede user slot changes).

[COR-2016] Ensure "synthetic" flag is set on injected code in instrumented classes

Tue, 27 Jul 2010 15:48:13 +0000 (GMT)

Ensure "synthetic" flag is set on injected code in instrumented classes

[COR-2015] Load time instrumentation relies on client code to configure db4o to use context classloader

Related — Tue, 27 Jul 2010 15:51:25 +0000 (GMT)

Db4oEnhancedLauncher/Db4oInstrumentationLauncher only set up the thread context CL to point to the instrumenting CL. If db4o is not explicitly configured to reflect against the context CL, the user space objects will be loaded by the instrumenting CL, while the db4o reflector layer will only see the app CL, resulting in a ClassCastException upon store/retrieve.

Workaround:
config.common().reflectWith(Thread.currentThread().getContextClassLoader());

Even if we just accept this behavior, it needs to be documented and we need a test case.

[COR-2014] raise nexpected error UniqueFieldValueConstraintViolationException

Resulted — Tue, 17 Aug 2010 15:01:29 +0000 (GMT)

The program delete and re-create a EmbeddeObjectContainer, and store in it few classes with unique key.
It's work fine with 7.12.[145|156] but hang, when commit() in v8.0.

9750 ERROR[MethodesStatiquesDba.commit]:Doublon sur les clefs unique DETECTE, voir communsOo.new OuvrirConteneur().java, ROLLBACK effectué.
!!!!!!!!!!! class: serialisation.TexteData field: clefData
com.db4o.constraints.UniqueFieldValueConstraintViolationException: class: serialisation.TexteData field: clefData
at com.db4o.constraints.UniqueFieldValueConstraint$1.ensureSingleOccurence(UniqueFieldValueConstraint.java:65)
at com.db4o.constraints.UniqueFieldValueConstraint$1.onEvent(UniqueFieldValueConstraint.java:96)
at com.db4o.internal.events.Event4Impl.trigger(Event4Impl.java:78)
at com.db4o.internal.events.EventRegistryImpl$4.run(EventRegistryImpl.java:123)
at com.db4o.foundation.DynamicVariable.with(DynamicVariable.java:47)
at com.db4o.internal.InCallback.run(InCallback.java:24)
at com.db4o.internal.events.EventRegistryImpl.withExceptionHandlingInCallback(EventRegistryImpl.java:279)
at com.db4o.internal.events.EventRegistryImpl.commitOnStarted(EventRegistryImpl.java:121)
at com.db4o.internal.LocalTransaction.dispatchCommittingCallback(LocalTransaction.java:82)
at com.db4o.internal.LocalTransaction.commit(LocalTransaction.java:57)
at com.db4o.internal.LocalTransaction.commit(LocalTransaction.java:51)
at com.db4o.internal.LocalObjectContainer.commit1(LocalObjectContainer.java:102)
at com.db4o.internal.IoAdaptedObjectContainer.commit1(IoAdaptedObjectContainer.java:171)
at com.db4o.internal.ObjectContainerBase$3.apply(ObjectContainerBase.java:402)
at com.db4o.internal.ObjectContainerBase$3.apply(ObjectContainerBase.java:400)
at com.db4o.internal.ObjectContainerBase.asTopLevelCall(ObjectContainerBase.java:426)
at com.db4o.internal.ObjectContainerBase.commit(ObjectContainerBase.java:400)
at com.db4o.internal.ExternalObjectContainer.commit(ExternalObjectContainer.java:41)
at dboo.MethodesStatiquesDba.commit(MethodesStatiquesDba.java:24)
at referentiel_BS.ChronosTexte3_main.travail(ChronosTexte3_main.java:298)
at referentiel_BS.ChronosTexte3_main.charger(ChronosTexte3_main.java:152)
at referentiel_BS.ChronosTexte3_main.main(ChronosTexte3_main.java:122)
at referentiel_BS.TableauDeParametres3_7_12_T.main(TableauDeParametres3_7_12_T.java:129)
Exception in thread "main" java.lang.NullPointerException
at com.db4o.internal.ObjectReference.activateOn(ObjectReference.java:69)
at com.db4o.internal.ObjectReference.activate(ObjectReference.java:58)
at referentiel.SerialiserReferencesGroupe.activate(SerialiserReferencesGroupe.java:148)
at referentiel.SerialiserReferencesGroupe.getChronoGroupeTexte(SerialiserReferencesGroupe.java:77)
at referentiel_BS.ChronosTexte3_main.charger(ChronosTexte3_main.java:155)
at referentiel_BS.ChronosTexte3_main.main(ChronosTexte3_main.java:122)
at referentiel_BS.TableauDeParametres3_7_12_T.main(TableauDeParametres3_7_12_T.java:129)

[COR-2013] Introduce SerializableTypeHandler

Tue, 27 Jul 2010 15:52:05 +0000 (GMT)

Introduce SerializableTypeHandler

[COR-2012] Add value ID checks to field index processing in consistency checker

Tue, 27 Jul 2010 15:56:33 +0000 (GMT)

Add value ID checks to field index processing in consistency checker

[COR-2011] UUID field index does not process deletes if lazy index loading has not been triggered before

Tue, 27 Jul 2010 14:35:42 +0000 (GMT)

Fix: Call #getIndex() in FieldMetadata#removeIndexEntry() instead of accessing _index field directly.

[COR-2010] [Android] com.db4o.db4ounit.common.assorted.PeekPersistedTestCase throws stack overflow

Tue, 20 Jul 2010 15:59:05 +0000 (GMT)

[Android] com.db4o.db4ounit.common.assorted.PeekPersistedTestCase throws stack overflow

[COR-2009] [Android] VerifyError in com.db4o.cs.monitoring classes

Wed, 28 Jul 2010 15:25:53 +0000 (GMT)

MonitoredSocket4TestCaseBase test cases throw a VerifyError on Db4oClientServerMBeans.

The reason seems to be that the this class imports javax.management package, which is not supported in android platform 7 (android-2.1).

The tests using that package are for now marked with OptOutNotSupportedJavaxManagementIssue interface

Solution: No monitoring on Android, exclude core code and tests

[COR-2008] [Android] ClassCastException trying to cast Db4oDatabase to GenericObject

Fri, 16 Jul 2010 16:06:57 +0000 (GMT)

CustomReflectorTestCase tests fail due to the ClassCastException mentioned in the title issue.

[COR-2007] [Android] Big math issues with android

Tue, 20 Jul 2010 16:08:02 +0000 (GMT)

BigDecimal and BigInteger fails with StandardReferenceTypeHandler but work with their specific type handlers.

com.db4o.db4ounit.jre12.types.BigIntegerTestCase.test: java.lang.NullPointerException: Mandatory handle (first) passed as null
at org.openssl.NativeBN.BN_bn2dec(Native Method)
at java.math.BigInt.decString(BigInt.java:209)
at java.math.BigInteger.toString(BigInteger.java:998)
at com.db4o.db4ounit.jre12.types.BigIntegerTestCase.test(BigIntegerTestCase.java:31)
...

[COR-2006] Classes in assembly named exactly as 'db4o' in its name are storable but not retrievable

Related — Mon, 26 Jul 2010 12:17:41 +0000 (GMT)

Classes in assembly named exactly as 'db4o' in its name are storable but not retrievable

[COR-2005] Db4oIOException when query touches not yet stored class in read-only mode

Tue, 20 Jul 2010 16:12:31 +0000 (GMT)

When you set the database to read-only mode, and then query for a class which isn't stored, the container will throw a Db4oIOException.

See also attached test case

[COR-2004] The 'container.Ext().KnownClasses()' has unexpected side-effects on 'container.Ext().Configure().AddAlias(..)'

Tue, 27 Jul 2010 16:00:05 +0000 (GMT)

After calling 'container.Ext().KnownClasses()' the added aliases with 'container.Ext().Configure().AddAlias(..)' are ingored.

[COR-2003] [.Net] Investigate failing.Net 4.0 tests due to cecil update

Tue, 20 Jul 2010 15:16:03 +0000 (GMT)

[.Net] Investigate failing.Net 4.0 tests due to cecil update

[COR-2002] Remove stackIsSmall checks for store/activate, always queue

Related — Tue, 13 Jul 2010 16:09:45 +0000 (GMT)

Remove stackIsSmall checks for store/activate, always queue

[COR-2001] With low custom max stack depth, PendingSet processing order expected by static field handling is not maintained

Related — Wed, 14 Jul 2010 15:32:19 +0000 (GMT)

Static field handling relies on StaticClass/StaticField being processed on #store() before it gets to see the actual objects from some non-static reference. With a low stack depth (2), StaticClass/StaticField instances may be queued while non-static field references may be processed immediately on "small stack".

Fix: Ensure the PendingSet queue is always processed before continuing immediate processing on "small stack".

[COR-2000] Defragmenting string field indexes is broken with btree id system

Resulted — Tue, 13 Jul 2010 15:31:54 +0000 (GMT)

Defragment uses a kludge for defragmenting string field indices (and other field indices on types embedded and redirected within the slot) that assumes that id pointers and slots share the same address space: It registers addresses for these objects as ids in the id mapping and uses "lenient" lookup. This doesn't work anymore for the btree id system.

Fix: Remove lenient lookup and address registration, provide a dedicated #copyAddress() to be called from string handler and friends that calculates address mapping directly.

[COR-1999] com.db4o.ext.InvalidSlotException: id: 53

Resulted — Tue, 3 Aug 2010 16:22:08 +0000 (GMT)

Running SnaplogSpike#main twice causes the following exception:

{code}
com.db4o.ext.InvalidSlotException: id: 53
at com.db4o.internal.marshall.UnmarshallingContext.invalidSlot(UnmarshallingContext.java:81)
at com.db4o.internal.marshall.UnmarshallingContext.read(UnmarshallingContext.java:49)
at com.db4o.internal.ObjectReference.read(ObjectReference.java:304)
at com.db4o.internal.ObjectReference.read(ObjectReference.java:290)
at com.db4o.internal.ObjectContainerBase.getHardObjectReferenceById(ObjectContainerBase.java:961)
at com.db4o.internal.marshall.AbstractReadContext.classMetadataForObjectId(AbstractReadContext.java:93)
at com.db4o.internal.marshall.AbstractReadContext.readObject(AbstractReadContext.java:65)
at com.db4o.internal.marshall.AbstractReadContext.readAtCurrentSeekPosition(AbstractReadContext.java:48)
at com.db4o.internal.OpenTypeHandler.read(OpenTypeHandler.java:173)
at com.db4o.internal.Handlers4.readValueType(Handlers4.java:309)
at com.db4o.internal.marshall.AbstractReadContext.readAtCurrentSeekPosition(AbstractReadContext.java:50)
at com.db4o.internal.marshall.AbstractReadContext$1.run(AbstractReadContext.java:40)
at com.db4o.internal.marshall.SlotFormat.doWithSlotIndirection(SlotFormat.java:64)
at com.db4o.internal.marshall.AbstractReadContext.readObject(AbstractReadContext.java:38)
at com.db4o.internal.marshall.AbstractReadContext.read(AbstractReadContext.java:30)
at com.db4o.internal.FieldMetadata.read(FieldMetadata.java:801)
at com.db4o.internal.FieldMetadata.activate(FieldMetadata.java:643)
at com.db4o.internal.handlers.StandardReferenceTypeHandler$2.processAspect(StandardReferenceTypeHandler.java:92)
at com.db4o.internal.metadata.MarshallingInfoTraverseAspectCommand.processAspect(MarshallingInfoTraverseAspectCommand.java:52)
at com.db4o.internal.metadata.StandardAspectTraversalStrategy.traverseAllAspects(StandardAspectTraversalStrategy.java:24)
at com.db4o.internal.ClassMetadata.traverseAllAspects(ClassMetadata.java:2065)
at com.db4o.internal.handlers.StandardReferenceTypeHandler.traverseAllAspects(StandardReferenceTypeHandler.java:247)
at com.db4o.internal.handlers.StandardReferenceTypeHandler.activateAspects(StandardReferenceTypeHandler.java:95)
at com.db4o.internal.handlers.StandardReferenceTypeHandler.activate(StandardReferenceTypeHandler.java:118)
at com.db4o.internal.Handlers4.activate(Handlers4.java:300)
at com.db4o.internal.ClassMetadata.instantiateFields(ClassMetadata.java:1302)
at com.db4o.internal.ClassMetadata.activate(ClassMetadata.java:1236)
at com.db4o.internal.ClassMetadata.instantiate(ClassMetadata.java:1194)
at com.db4o.internal.marshall.UnmarshallingContext.read(UnmarshallingContext.java:70)
at com.db4o.internal.ObjectReference.read(ObjectReference.java:304)
at com.db4o.internal.ObjectReference.readForActivation(ObjectReference.java:136)
at com.db4o.internal.ObjectReference.activateInternal(ObjectReference.java:132)
at com.db4o.internal.ObjectContainerBase.processedByImmediateActivation(ObjectContainerBase.java:1852)
at com.db4o.internal.ObjectContainerBase.stillToActivate(ObjectContainerBase.java:1828)
at com.db4o.internal.marshall.AbstractReadContext.readObject(AbstractReadContext.java:83)
at com.db4o.internal.marshall.AbstractReadContext.readAtCurrentSeekPosition(AbstractReadContext.java:48)
at com.db4o.internal.marshall.AbstractReadContext$1.run(AbstractReadContext.java:40)
at com.db4o.internal.marshall.SlotFormat.doWithSlotIndirection(SlotFormat.java:64)
at com.db4o.internal.marshall.AbstractReadContext.readObject(AbstractReadContext.java:38)
at com.db4o.internal.handlers.array.ArrayHandler.readInto(ArrayHandler.java:381)
at com.db4o.internal.handlers.array.ArrayHandler.readElements(ArrayHandler.java:363)
at com.db4o.internal.handlers.array.ArrayHandler.read(ArrayHandler.java:355)
at com.db4o.internal.Handlers4.readValueType(Handlers4.java:309)
at com.db4o.internal.marshall.AbstractReadContext.readAtCurrentSeekPosition(AbstractReadContext.java:50)
at com.db4o.internal.marshall.AbstractReadContext$1.run(AbstractReadContext.java:40)
at com.db4o.internal.marshall.SlotFormat.doWithSlotIndirection(SlotFormat.java:76)
at com.db4o.internal.marshall.SlotFormat.doWithSlotIndirection(SlotFormat.java:66)
at com.db4o.internal.marshall.AbstractReadContext.readObject(AbstractReadContext.java:38)
at com.db4o.internal.marshall.AbstractReadContext.read(AbstractReadContext.java:30)
at com.db4o.internal.FieldMetadata.read(FieldMetadata.java:801)
at com.db4o.internal.FieldMetadata.activate(FieldMetadata.java:643)
at com.db4o.internal.handlers.StandardReferenceTypeHandler$2.processAspect(StandardReferenceTypeHandler.java:92)
at com.db4o.internal.metadata.MarshallingInfoTraverseAspectCommand.processAspect(MarshallingInfoTraverseAspectCommand.java:52)
at com.db4o.internal.metadata.StandardAspectTraversalStrategy.traverseAllAspects(StandardAspectTraversalStrategy.java:24)
at com.db4o.internal.ClassMetadata.traverseAllAspects(ClassMetadata.java:2065)
at com.db4o.internal.handlers.StandardReferenceTypeHandler.traverseAllAspects(StandardReferenceTypeHandler.java:247)
at com.db4o.internal.handlers.StandardReferenceTypeHandler.activateAspects(StandardReferenceTypeHandler.java:95)
at com.db4o.internal.handlers.StandardReferenceTypeHandler.activate(StandardReferenceTypeHandler.java:118)
at com.db4o.internal.Handlers4.activate(Handlers4.java:300)
at com.db4o.internal.ClassMetadata.instantiateFields(ClassMetadata.java:1302)
at com.db4o.internal.ClassMetadata.activate(ClassMetadata.java:1236)
at com.db4o.internal.ClassMetadata.instantiate(ClassMetadata.java:1184)
at com.db4o.internal.marshall.UnmarshallingContext.read(UnmarshallingContext.java:70)
at com.db4o.internal.ObjectReference.read(ObjectReference.java:304)
at com.db4o.internal.ObjectReference.read(ObjectReference.java:290)
at com.db4o.internal.ObjectContainerBase$8.apply(ObjectContainerBase.java:896)
at com.db4o.internal.ObjectContainerBase$8.apply(ObjectContainerBase.java:894)
at com.db4o.internal.ObjectContainerBase.asTopLevelCall(ObjectContainerBase.java:426)
at com.db4o.internal.ObjectContainerBase.readActivatedObjectNotInCache(ObjectContainerBase.java:894)
at com.db4o.internal.query.result.AbstractQueryResult.activatedObject(AbstractQueryResult.java:34)
at com.db4o.internal.query.result.AbstractQueryResult$1.map(AbstractQueryResult.java:62)
at com.db4o.foundation.MappingIterator.moveNext(MappingIterator.java:30)
at com.db4o.foundation.Iterable4Adaptor.moveNext(Iterable4Adaptor.java:46)
at com.db4o.foundation.Iterable4Adaptor.hasNext(Iterable4Adaptor.java:28)
at com.db4o.foundation.Iterable4Adaptor.next(Iterable4Adaptor.java:34)
at com.db4o.internal.query.result.StatefulQueryResult.next(StatefulQueryResult.java:48)
at com.db4o.internal.query.ObjectSetFacade.next(ObjectSetFacade.java:64)
at com.db4o.internal.ClassMetadata.queryStaticClass(ClassMetadata.java:1874)
at com.db4o.internal.ClassMetadata.storeStaticFieldValues(ClassMetadata.java:1719)
at com.db4o.internal.ClassMetadata.initOnUp(ClassMetadata.java:1150)
at com.db4o.internal.ClassMetadataRepository.initClassMetadataOnUp(ClassMetadataRepository.java:346)
at com.db4o.internal.ClassMetadataRepository.readClassMetadata(ClassMetadataRepository.java:465)
at com.db4o.internal.ClassMetadataRepository.readClassMetadata(ClassMetadataRepository.java:201)
at com.db4o.internal.ClassMetadataRepository.classMetadataForReflectClass(ClassMetadataRepository.java:193)
at com.db4o.internal.ClassMetadataRepository.produceClassMetadata(ClassMetadataRepository.java:206)
at com.db4o.internal.ObjectContainerBase.produceClassMetadata(ObjectContainerBase.java:1018)
at com.db4o.internal.query.processor.QConClass.<init>(QConClass.java:35)
at com.db4o.internal.query.processor.QConClass.<init>(QConClass.java:44)
at com.db4o.internal.query.processor.QQueryBase.addClassConstraint(QQueryBase.java:177)
at com.db4o.internal.query.processor.QQueryBase.constrain(QQueryBase.java:130)
at com.db4o.internal.query.NativeQueryHandler.configureQuery(NativeQueryHandler.java:51)
at com.db4o.internal.query.NativeQueryHandler.execute(NativeQueryHandler.java:44)
at com.db4o.internal.ObjectContainerBase.query(ObjectContainerBase.java:1360)
at com.db4o.internal.ExternalObjectContainer.query(ExternalObjectContainer.java:120)
at com.db4o.internal.ExternalObjectContainer.query(ExternalObjectContainer.java:116)
at com.lyndir.lhunath.snaplog.model.service.impl.ServicesModule.configure(ServicesModule.java:139)
at com.google.inject.AbstractModule.configure(AbstractModule.java:59)
at com.google.inject.spi.Elements$RecordingBinder.install(Elements.java:223)
at com.google.inject.spi.Elements.getElements(Elements.java:101)
at com.google.inject.InjectorShell$Builder.build(InjectorShell.java:135)
at com.google.inject.InjectorBuilder.build(InjectorBuilder.java:102)
at com.google.inject.Guice.createInjector(Guice.java:92)
at com.google.inject.Guice.createInjector(Guice.java:69)
at com.google.inject.Guice.createInjector(Guice.java:59)
at com.lyndir.lhunath.snaplog.spike.SnaplogSpike.main(SnaplogSpike.java:48)
{code}

[COR-1998] Introduce ID mapping sanity checking to be used in dedicated db4ounit fixture

Resulted — Tue, 20 Jul 2010 15:39:01 +0000 (GMT)

Introduce ID mapping sanity checking to be used in dedicated db4ounit fixture

[COR-1997] Commit throw an UniqueFieldValueConstraintViolationException after defragment

Resulted — Tue, 13 Jul 2010 15:31:22 +0000 (GMT)

I´m using the 8.0.146.14426 version of db4o.
The 7.12 version does not have this error.

Steps to reproduce this strange behavior:

1) Create a very simple class with 1 one string property. Put the class inside a new namespace with at least 17 characters.
2) On configuration (IEmbeddedConfiguration), create UniqueFieldValueConstraint on the string´s property of your class.
3) Open with this configuration a db4o container.
4) Create 700 mock items of this class, and store/save with container. Just 700, you will see.
5) Now, close and dispose the container.
6) Defragment the database with the same configuration. (THE PROBLEM IS HERE?)
7) After defragment, open a new container with the same configuration.
8) Get all the items with a simple query, and try to store and save.
On that moment you will have an ugly UniqueFieldValueConstraintViolationException.

It seems that there are several factors involved in this error:

1) the most important is the defragment process: without defragment, there isn´t error.
2) the length of the class´s namespace looks important too.
2) the length of the collection.

I´m going to attach a visual studio solution with several examples: with error, with a small namespace, etc.

Thanks in advance!

[COR-1996] java.lang.OutOfMemoryError in UnicodeStringIO.read

Similar — Tue, 6 Jul 2010 15:44:41 +0000 (GMT)

Tried setting -Xmx512m, even 2g, with no effect.

My database is 2.5M so I can't imagine reading from it could cause this. This happens during a query while the application server is deploying.

{code}
java.lang.OutOfMemoryError: Java heap space
        at com.db4o.internal.encoding.UnicodeStringIO.read(UnicodeStringIO.java:27)
        at com.db4o.internal.encoding.LatinStringIO.readLengthAndString(LatinStringIO.java:56)
        at com.db4o.internal.handlers.StringHandler.readStringNoDebug(StringHandler.java:210)
        at com.db4o.internal.handlers.StringHandler.readString(StringHandler.java:202)
        at com.db4o.internal.handlers.StringHandler.read(StringHandler.java:221)
        at com.db4o.internal.Handlers4.readValueType(Handlers4.java:309)
        at com.db4o.internal.marshall.AbstractReadContext.readAtCurrentSeekPosition(AbstractReadContext.java:50)
        at com.db4o.internal.marshall.AbstractReadContext$1.run(AbstractReadContext.java:40)
        at com.db4o.internal.marshall.SlotFormat.doWithSlotIndirection(SlotFormat.java:76)
        at com.db4o.internal.marshall.SlotFormat.doWithSlotIndirection(SlotFormat.java:66)
        at com.db4o.internal.marshall.AbstractReadContext.readObject(AbstractReadContext.java:38)
        at com.db4o.internal.marshall.AbstractReadContext.read(AbstractReadContext.java:30)
        at com.db4o.internal.FieldMetadata.read(FieldMetadata.java:801)
        at com.db4o.internal.FieldMetadata.activate(FieldMetadata.java:643)
        at com.db4o.internal.handlers.StandardReferenceTypeHandler$2.processAspect(StandardReferenceTypeHandler.java:92)
        at com.db4o.internal.metadata.MarshallingInfoTraverseAspectCommand.processAspect(MarshallingInfoTraverseAspectCommand.java:52)
        at com.db4o.internal.metadata.StandardAspectTraversalStrategy.traverseAllAspects(StandardAspectTraversalStrategy.java:24)
        at com.db4o.internal.ClassMetadata.traverseAllAspects(ClassMetadata.java:2065)
        at com.db4o.internal.handlers.StandardReferenceTypeHandler.traverseAllAspects(StandardReferenceTypeHandler.java:247)
        at com.db4o.internal.handlers.StandardReferenceTypeHandler.activateAspects(StandardReferenceTypeHandler.java:95)
        at com.db4o.internal.handlers.StandardReferenceTypeHandler.activate(StandardReferenceTypeHandler.java:118)
        at com.db4o.internal.Handlers4.activate(Handlers4.java:300)
        at com.db4o.internal.ClassMetadata.instantiateFields(ClassMetadata.java:1302)
        at com.db4o.internal.ClassMetadata.activate(ClassMetadata.java:1236)
        at com.db4o.internal.ClassMetadata.instantiate(ClassMetadata.java:1194)
        at com.db4o.internal.marshall.UnmarshallingContext.read(UnmarshallingContext.java:70)
        at com.db4o.internal.ObjectReference.read(ObjectReference.java:304)
        at com.db4o.internal.ObjectReference.readForActivation(ObjectReference.java:136)
        at com.db4o.internal.ObjectReference.activateInternal(ObjectReference.java:132)
        at com.db4o.internal.ObjectContainerBase.processedByImmediateActivation(ObjectContainerBase.java:1852)
        at com.db4o.internal.ObjectContainerBase.stillToActivate(ObjectContainerBase.java:1828)
        at com.db4o.internal.marshall.AbstractReadContext.readObject(AbstractReadContext.java:83)
{code}

[COR-1995] Diagnostic handling should go to the optional package

Tue, 6 Jul 2010 15:49:25 +0000 (GMT)

Diagnostic handling should go to the optional package

[COR-1994] UUID hash code from loaded objects should work.

Related — Tue, 6 Jul 2010 15:52:45 +0000 (GMT)

When you load a UUID from the database, it's hash code is 0. This leads to subtle bugs.

Expect a valid hashCode.

Work-Around, configure to call the constructor on UUIDs.

config.objectClass(UUID.class).callConstructor(true)

[COR-1993] Race condition causing NPE stopping listener thread in client/server tests

Tue, 6 Jul 2010 15:29:41 +0000 (GMT)

Race condition causing NPE stopping listener thread in client/server tests

[COR-1992] [Android] Review all 'OptOut' tests

Tue, 20 Jul 2010 15:39:32 +0000 (GMT)

[Android] Review all 'OptOut' tests

[COR-1991] Investigate deadlocks in client/server tests

Fri, 2 Jul 2010 11:42:42 +0000 (GMT)

Investigate deadlocks in client/server tests

[COR-1990] [Android] Failure to find ClassMetadata for StaticField

Resulted — Tue, 20 Jul 2010 16:19:18 +0000 (GMT)

[Android] Failure to find ClassMetadata for StaticField

[COR-1989] java.sql.Date cannot be stored/queries

Related — Tue, 29 Jun 2010 15:55:40 +0000 (GMT)

As opposed to the claims in the documentation

https://developer.db4o.com/Documentation/Reference/db4o-7.12/java/reference/html/reference/usage_pitfalls/storing_timestamp_and_date_values.html

java.sql.Date fields cannot be stored/queried (probably a regression introduced with the type handler refactoring). The workarounds listed there don't work, setting a naive custom type handler also won't help. See SQLDateTestCase.

Bonus: When used in queries without classes on the server, the server will try to send java.util.Date class metadata to the client (and fail to find the slot, resulting in NPE).

[COR-1988] The 'ICommonConfiguration#markTransient(String annotationClass)' has no effect on the Java-Plattform

Tue, 29 Jun 2010 15:55:47 +0000 (GMT)

The configuration 'ICommonConfiguration#markTransient(String annotationClass)' doesn't have any effect on the Java-Plattform.

On the .NET Plattform it works as expected.

[COR-1987] TA enabled classes with object arrays fails on C/S with no classes at server

Resulted — Tue, 29 Jun 2010 16:00:44 +0000 (GMT)

We should either fully support this scenario or throw a more informative exception (and document). See com.db4o.db4ounit.common.staging.TAUnavailableClassAtServer

[COR-1986] db4o need proper releases in Maven

Related — Tue, 29 Jun 2010 16:02:27 +0000 (GMT)

The db4o Maven repository currently only contains snapshots, even for stable releases (i.e. 7.4-SNAPSHOT, 7.12-SNAPSHOT). This is a problem as Maven clients would periodically check the repository for a later snapshot, even though in this case there would most likely not be an update -- causing builds to be slower than necessary.

Please consider doing proper releases for the stable branches, and for release candidates

[COR-1985] [Android] Mark java 1.5 failing tests with appropriate 'OptOut' interface

Resulted — Tue, 29 Jun 2010 15:24:59 +0000 (GMT)

[Android] Mark java 1.5 failing tests with appropriate 'OptOut' interface

[COR-1984] NetReflector#ForClass should rely on db4o reflection layer when checking for primitives

Resulted — Tue, 22 Jun 2010 16:03:52 +0000 (GMT)

NetReflector#ForClass should rely on db4o reflection layer when checking for primitives

[COR-1983] The #openSession() on the TCP-Client doesn't provide transaction-isolation, but only 'refrence-cache'-isolation

Tue, 22 Jun 2010 16:04:54 +0000 (GMT)

The #openSession() on a TCP-client creates a new session-container. It has it's own reference-system as expected.

However the transaction is not isolated! This is unexpected and confusing. Because on a embedded container the same call provides transaction-isolation.

[COR-1982] The callback's object-container isn't the embedded-container for which the event was registered

Tue, 29 Jun 2010 15:40:23 +0000 (GMT)

When using embedded clients ( #openSession() ) together with callbacks, the CommitEventArgs#objectContainer() doesn't return the session-container.

This leads to confusion when you try to update/refresh objects in the callback. Also you need different flavors for the event-handler for embedded clients and TCP-clients.

[COR-1981] IndexOutOfRangeException

Related — Tue, 22 Jun 2010 16:11:56 +0000 (GMT)

While connecting from .NET Clients to Java Server I'm trying to share one object between 2 clients and getting IndexOutOfRangeException.
This could be the same reason as COR-1980, however this configuration is with Java server.

[COR-1980] ArgumentException and IndexOutOfRangeException

Related — Tue, 29 Jun 2010 15:40:53 +0000 (GMT)

We have problem trying to get work .NET Client/Server.

I made sample for illustrating problem in 2 scenarios:
1) Start server and client from one code - works
2) Start server as process - fails.

I run second scenario for 5 times and first 2 times got ArgumentException (something with Db4o WeakReferenceHandler), but last 3 times - IndexOutOfRangeException (this bug is repriduced only when I get objects by query, when I call GetByID() it works). Maybe these 2 bugs have different reasons, but I can only reproduce them together.

[COR-1979] Activator field in Activatable types deserves custom handling with respect to transient check

Resulted — Tue, 22 Jun 2010 16:13:08 +0000 (GMT)

Activator field in Activatable types deserves custom handling with respect to transient check

[COR-1978] Transient field modifier is not being respected in C/S mode without classes in the server

Resulted — Tue, 22 Jun 2010 12:41:33 +0000 (GMT)

In C/C mode without classes in the server, transient fields values will be overridden by refresh calls. This becomes a problem in particular with TA/TP mode enabled since it will reset the activator to null.

See cross-platform C/S sample code attached to COR-1949.