private ITypeHandler4 CorrectHandlerVersion(IDefragmentContext context, ITypeHandler4
handler, ArrayInfo info)
{
Db4objects.Db4o.Internal.ClassMetadata classMetadata = ClassMetadata(context, info
);
return(HandlerRegistry.CorrectHandlerVersion(context, handler, classMetadata));
}
public override int InstanceCount(ClassMetadata clazz, Transaction trans)
{
lock (Lock())
{
return clazz.IndexEntryCount(trans);
}
}
public virtual IActivationDepth ActivationDepthFor(ClassMetadata classMetadata, ActivationMode
mode)
{
Record(new MethodCall("activationDepthFor", new object[] { classMetadata, mode })
);
return _delegate.ActivationDepthFor(classMetadata, mode);
}
internal virtual void Analyze(Transaction trans)
{
_ref = trans.ReferenceForObject(_obj);
if (_ref != null)
{
_classMetadata = _ref.ClassMetadata();
return;
}
IReflectClass claxx = _container.Reflector().ForObject(_obj);
if (claxx == null)
{
NotStorable(_obj, claxx);
return;
}
if (!DetectClassMetadata(trans, claxx))
{
return;
}
if (IsValueType(_classMetadata))
{
NotStorable(_obj, _classMetadata.ClassReflector(), " Value types can only be stored embedded in parent objects."
);
}
}
/// <exception cref="Db4objects.Db4o.CorruptionException"></exception>
/// <exception cref="System.IO.IOException"></exception>
public void ProcessObjectSlot(DefragmentServicesImpl services, ClassMetadata classMetadata
, int id)
{
ByteArrayBuffer sourceBuffer = services.SourceBufferByID(id);
DefragmentContextImpl.ProcessCopy(services, id, new _ISlotCopyHandler_43(this, services
), sourceBuffer);
}
public override Db4objects.Db4o.Internal.ClassMetadata ClassMetadata()
{
if (_classMetadata != null)
{
return(_classMetadata);
}
Read();
if (_bytes == null)
{
return(null);
}
Seek(0);
ObjectContainerBase stream = Container();
ObjectHeader objectHeader = new ObjectHeader(stream, _bytes);
_classMetadata = objectHeader.ClassMetadata();
if (_classMetadata != null)
{
if (stream._handlers.IclassCompare.IsAssignableFrom(_classMetadata.ClassReflector
()))
{
ReadThis(false);
}
}
return(_classMetadata);
}
/// <exception cref="Db4objects.Db4o.Ext.Db4oIOException"></exception>
private DatabaseIdentityIDAndUUID ReadDatabaseIdentityIDAndUUID
(ObjectContainerBase container, ClassMetadata classMetadata, Slot oldSlot, bool
checkClass)
{
if (DTrace.enabled)
{
DTrace.RereadOldUuid.LogLength(oldSlot.Address(), oldSlot.Length());
}
var reader = container.DecryptedBufferByAddress(oldSlot.Address(), oldSlot
.Length());
if (checkClass)
{
var realClass = ClassMetadata.ReadClass(container, reader);
if (realClass != classMetadata)
{
return null;
}
}
if (classMetadata.SeekToField(container.Transaction, reader, this) == HandlerVersion
.Invalid)
{
return null;
}
return new DatabaseIdentityIDAndUUID(reader.ReadInt(), reader.ReadLong
());
}
public ModifiedAspectTraversalStrategy(ClassMetadata classMetadata, IList ancestors
)
{
_classDiffs = new ArrayList();
_classDiffs.Add(new HierarchyAnalyzer.Same(classMetadata));
Sharpen.Collections.AddAll(_classDiffs, ancestors);
}
public static Sharpen.Util.ISet BuildHierarchy(ClassMetadataRepository repository
)
{
ClassMetadataIterator classIter = repository.Iterator();
IDictionary nodes = new Hashtable();
Sharpen.Util.ISet roots = new HashSet();
while (classIter.MoveNext())
{
Db4objects.Db4o.Internal.ClassMetadata clazz = classIter.CurrentClass();
Db4objects.Db4o.Filestats.ClassNode node = new Db4objects.Db4o.Filestats.ClassNode
(clazz);
nodes[clazz.GetName()] = node;
if (clazz.GetAncestor() == null)
{
roots.Add(node);
}
}
for (IEnumerator nodeIter = nodes.Values.GetEnumerator(); nodeIter.MoveNext();)
{
Db4objects.Db4o.Filestats.ClassNode node = ((Db4objects.Db4o.Filestats.ClassNode)
nodeIter.Current);
Db4objects.Db4o.Internal.ClassMetadata ancestor = node.ClassMetadata().GetAncestor
();
if (ancestor != null)
{
((Db4objects.Db4o.Filestats.ClassNode)nodes[ancestor.GetName()]).AddSubClass(node
);
}
}
return(roots);
}
private void CascadeActivation(IActivationContext context)
{
IActivationDepth depth = context.Depth();
if (!depth.RequiresActivation())
{
return;
}
if (depth.Mode().IsDeactivate())
{
Container().StillToDeactivate(_transaction, context.TargetObject(), depth, false);
}
else
{
// FIXME: [TA] do we really need to check for isValueType here?
Db4objects.Db4o.Internal.ClassMetadata classMetadata = context.ClassMetadata();
if (classMetadata.IsStruct())
{
classMetadata.CascadeActivation(context);
}
else
{
Container().StillToActivate(context);
}
}
}
internal virtual void Process(ClassMetadata newClassMetadata)
{
if (_pending.Contains(newClassMetadata))
{
return;
}
ClassMetadata ancestor = newClassMetadata.GetAncestor();
if (ancestor != null)
{
Process(ancestor);
}
_pending.Add(newClassMetadata);
_members.Add(newClassMetadata);
if (_running)
{
return;
}
_running = true;
try
{
CheckInits();
_pending = new Collection4();
}
finally
{
_running = false;
}
}
internal QCandidates(LocalTransaction a_trans, ClassMetadata a_classMetadata, QField
a_field, bool isTopLevel)
{
// Transaction necessary as reference to stream
// collection of all constraints
// possible class information
// possible field information
// current executing constraint, only set where needed
_result = new QueryResultCandidates(this);
_isTopLevel = isTopLevel;
i_trans = a_trans;
_classMetadata = a_classMetadata;
_field = a_field;
if (a_field == null || a_field._fieldMetadata == null || !(a_field._fieldMetadata
.GetHandler() is StandardReferenceTypeHandler))
{
return;
}
ClassMetadata yc = ((StandardReferenceTypeHandler)a_field._fieldMetadata.GetHandler
()).ClassMetadata();
if (_classMetadata == null)
{
_classMetadata = yc;
}
else
{
yc = _classMetadata.GetHigherOrCommonHierarchy(yc);
if (yc != null)
{
_classMetadata = yc;
}
}
}
internal QCandidates(LocalTransaction a_trans, ClassMetadata a_classMetadata, QField
a_field)
{
// Transaction necessary as reference to stream
// root of the QCandidate tree
// collection of all constraints
// possible class information
// possible field information
// current executing constraint, only set where needed
i_trans = a_trans;
i_classMetadata = a_classMetadata;
_field = a_field;
if (a_field == null || a_field._fieldMetadata == null || !(a_field._fieldMetadata
.GetHandler() is StandardReferenceTypeHandler))
{
return;
}
ClassMetadata yc = ((StandardReferenceTypeHandler)a_field._fieldMetadata.GetHandler
()).ClassMetadata();
if (i_classMetadata == null)
{
i_classMetadata = yc;
}
else
{
yc = i_classMetadata.GetHigherOrCommonHierarchy(yc);
if (yc != null)
{
i_classMetadata = yc;
}
}
}
public override void Defrag(ClassMetadata classMetadata, ClassAspect aspect, LatinStringIO
sio, DefragmentContextImpl context)
{
base.Defrag(classMetadata, aspect, sio, context);
if (!(aspect is FieldMetadata))
{
return;
}
FieldMetadata field = (FieldMetadata)aspect;
if (field.IsVirtual())
{
return;
}
if (field.HasIndex())
{
BTree index = field.GetIndex(context.SystemTrans());
int targetIndexID = context.CopyID();
if (targetIndexID != 0)
{
index.DefragBTree(context.Services());
}
}
else
{
context.WriteInt(0);
}
}
public override void Write(Transaction trans, ClassMetadata clazz, ClassAspect aspect
, ByteArrayBuffer writer)
{
writer.WriteShortString(trans, aspect.GetName());
if (!(aspect is FieldMetadata))
{
return;
}
FieldMetadata field = (FieldMetadata)aspect;
field.Alive();
if (field.IsVirtual())
{
return;
}
ITypeHandler4 handler = field.GetHandler();
if (handler is StandardReferenceTypeHandler)
{
// TODO: ensure there is a test case, to make this happen
if (((StandardReferenceTypeHandler)handler).ClassMetadata().GetID() == 0)
{
trans.Container().NeedsUpdate(clazz);
}
}
writer.WriteInt(field.FieldTypeID());
BitMap4 bitmap = new BitMap4(3);
bitmap.Set(0, field.IsPrimitive());
bitmap.Set(1, Handlers4.HandlesArray(handler));
bitmap.Set(2, Handlers4.HandlesMultidimensionalArray(handler));
// keep the order
writer.WriteByte(bitmap.GetByte(0));
}
public _IProcedure4_39(ClassMarshaller _enclosing, Transaction trans, ClassMetadata
clazz, ByteArrayBuffer writer)
{
this._enclosing = _enclosing;
this.trans = trans;
this.clazz = clazz;
this.writer = writer;
}
public MsgD GetWriter(Transaction trans, Pointer4 pointer, ClassMetadata classMetadata
, int param, ByteArrayBuffer buffer)
{
return GetWriter(trans, pointer, buffer, new[]
{
classMetadata.GetID(), param
});
}
public WriteUpdateProcessor(LocalTransaction transaction, int id, ClassMetadata clazz
, ArrayType typeInfo)
{
_transaction = transaction;
_id = id;
_clazz = clazz;
_typeInfo = typeInfo;
}
protected override int InternalDeclaredAspectCount(Db4objects.Db4o.Internal.ClassMetadata
classMetadata)
{
int aspectCount = classMetadata._aspects.Length;
context.WriteDeclaredAspectCount(aspectCount);
return(aspectCount);
}
public Diff(Db4objects.Db4o.Internal.ClassMetadata classMetadata)
{
if (classMetadata == null)
{
throw new ArgumentNullException();
}
_classMetadata = classMetadata;
}
private void RegisterClassMetadataById(ClassMetadata clazz)
{
if (clazz.GetID() == 0)
{
clazz.Write(_systemTransaction);
}
_classMetadataByID.Put(clazz.GetID(), clazz);
}
public virtual IUpdateDepth Adjust(ClassMetadata clazz)
{
if (clazz.CascadesOnDeleteOrUpdate())
{
return AdjustDepthToBorders().Descend();
}
return Descend();
}
public Diff(Db4objects.Db4o.Internal.ClassMetadata classMetadata)
{
if (classMetadata == null)
{
throw new ArgumentNullException();
}
_classMetadata = classMetadata;
}
private ITypeHandler4 TypeHandlerFor(IInternalCandidate candidate)
{
Db4objects.Db4o.Internal.ClassMetadata classMetadata = candidate.ClassMetadata();
if (classMetadata != null)
{
return(classMetadata.TypeHandler());
}
return(null);
}
public override IActivationDepth Descend(ClassMetadata metadata)
{
if (_depth < 1)
{
return this;
}
return new Db4objects.Db4o.Internal.Activation.FixedActivationDepth(_depth - 1, _mode
);
}
public override Db4objects.Db4o.Internal.ClassMetadata ClassMetadata()
{
Db4objects.Db4o.Internal.ClassMetadata classMetadata = _reference.ClassMetadata();
if (classMetadata == null)
{
throw new InvalidOperationException();
}
return(classMetadata);
}
public TypeHandlerAspect(ClassMetadata classMetadata, ITypeHandler4 typeHandler)
{
if (Handlers4.IsValueType(typeHandler))
{
throw new InvalidOperationException();
}
_ownerMetadata = classMetadata;
_typeHandler = typeHandler;
}
public StoredClassImpl(Transaction transaction, ClassMetadata classMetadata)
{
if (classMetadata == null)
{
throw new ArgumentException();
}
_transaction = transaction;
_classMetadata = classMetadata;
}
public MsgD GetWriter(Transaction trans, Pointer4 pointer, ClassMetadata classMetadata
, ByteArrayBuffer buffer)
{
if (classMetadata == null)
{
return GetWriter(trans, pointer, buffer, new int[] { 0 });
}
return GetWriter(trans, pointer, buffer, new int[] { classMetadata.GetID() });
}
private int ConfiguredActivationDepth(ClassMetadata metadata)
{
Config4Class config = metadata.ConfigOrAncestorConfig();
if (config != null && _mode.IsActivate())
{
return config.AdjustActivationDepth(_depth);
}
return _depth;
}
public override IActivationDepth Descend(ClassMetadata metadata)
{
if (null == metadata)
{
return new Db4objects.Db4o.Internal.Activation.LegacyActivationDepth(_depth - 1,
_mode);
}
return new Db4objects.Db4o.Internal.Activation.LegacyActivationDepth(DescendDepth
(metadata), _mode);
}
private int DescendDepth(ClassMetadata metadata)
{
int depth = ConfiguredActivationDepth(metadata) - 1;
if (metadata.IsStruct())
{
// We also have to instantiate structs completely every time.
return Math.Max(1, depth);
}
return depth;
}
protected override void ReadIndex(ObjectContainerBase stream, ClassMetadata clazz
, ByteArrayBuffer reader)
{
int indexID = reader.ReadInt();
if (indexID == 0)
{
return;
}
clazz.Index().Read(stream, indexID);
}
/// <exception cref="Db4objects.Db4o.CorruptionException"></exception>
/// <exception cref="System.IO.IOException"></exception>
public void ProcessClass(DefragmentServicesImpl services, ClassMetadata classMetadata
, int id, int classIndexID)
{
if (services.MappedID(id, -1) == -1)
{
Sharpen.Runtime.Err.WriteLine("MAPPING NOT FOUND: " + id);
}
DefragmentContextImpl.ProcessCopy(services, id, new _ISlotCopyHandler_34(classMetadata
, classIndexID));
}
public HierarchyAnalyzer(ClassMetadata storedClass, IReflectClass runtimeClass)
{
if (storedClass == null || runtimeClass == null)
{
throw new ArgumentNullException();
}
_storedClass = storedClass;
_runtimeClass = runtimeClass;
_objectClass = runtimeClass.Reflector().ForClass(typeof(object));
}
public virtual bool RebuildIndexForClass(LocalObjectContainer container, ClassMetadata
classMetadata)
{
long[] ids = classMetadata.GetIDs();
for (int i = 0; i < ids.Length; i++)
{
RebuildIndexForObject(container, (int)ids[i]);
}
return ids.Length > 0;
}
private void AssertClassHandler()
{
int id1 = StoreItem();
int id2 = StoreItem();
int smallerID = Math.Min(id1, id2);
int biggerID = Math.Max(id1, id2);
ClassMetadata classMetadata = new ClassMetadata(Container(), Reflector().ForClass
(typeof(Comparable4TestCase.Item)));
AssertHandlerComparison((IComparable4)classMetadata.TypeHandler(), smallerID, biggerID
);
}
public virtual void Write(Transaction trans, ClassMetadata clazz, ByteArrayBuffer
writer)
{
writer.WriteShortString(trans, clazz.NameToWrite());
int intFormerlyKnownAsMetaClassID = 0;
writer.WriteInt(intFormerlyKnownAsMetaClassID);
writer.WriteIDOf(trans, clazz._ancestor);
WriteIndex(trans, clazz, writer);
writer.WriteInt(clazz.DeclaredAspectCount());
clazz.TraverseDeclaredAspects(new _IProcedure4_39(this, trans, clazz, writer));
}
private ITypeHandler4 TypeHandlerFor(Db4objects.Db4o.Internal.Query.Processor.QCandidate
candidate)
{
Db4objects.Db4o.Internal.ClassMetadata classMetadata = candidate.ReadClassMetadata
();
if (classMetadata != null)
{
return(classMetadata.TypeHandler());
}
return(null);
}
public override IPreparedComparison PrepareComparison(ObjectContainerBase container
, object constraint)
{
Db4objects.Db4o.Internal.ClassMetadata classMetadata = ClassMetadata();
if (classMetadata == null)
{
return(null);
}
return(classMetadata.PrepareComparison(container.Transaction.Context(), constraint
));
}
public override IReflectClass ClassReflector(IReflector reflector, ClassMetadata
classMetadata, bool isPrimitive)
{
IReflectClass primitiveClaxx = Handlers4.PrimitiveClassReflector(classMetadata, reflector
);
if (primitiveClaxx != null)
{
return primitiveClaxx;
}
return base.ClassReflector(reflector, classMetadata, isPrimitive);
}
internal void Store(Db4objects.Db4o.Internal.Transaction trans, Db4objects.Db4o.Internal.ClassMetadata
classMetadata, object obj)
{
_object = obj;
_class = classMetadata;
int id = trans.Container().IdForNewUserObject(trans);
SetID(id);
// will be ended in continueset()
BeginProcessing();
BitTrue(Const4.Continue);
}
public virtual void ClassMetadata(Db4objects.Db4o.Internal.ClassMetadata classMetadata
)
{
if (_class == classMetadata)
{
return;
}
if (_class != null)
{
throw new InvalidOperationException("Object types aren't supposed to change!");
}
_class = classMetadata;
}
private FieldMetadata FieldMetadataFrom(QField qField, Db4objects.Db4o.Internal.ClassMetadata
type)
{
FieldMetadata existingField = qField.GetFieldMetadata();
if (existingField != null)
{
return existingField;
}
FieldMetadata field = type.FieldMetadataForName(qField.Name());
if (field != null)
{
field.Alive();
}
return field;
}
private ObjectHeader(ObjectContainerBase container, Db4objects.Db4o.Internal.ClassMetadata
classMetadata, IReadWriteBuffer reader)
{
int classID = reader.ReadInt();
_marshallerFamily = ReadMarshallerFamily(reader, classID);
classID = NormalizeID(classID);
_classMetadata = (classMetadata != null ? classMetadata : container.ClassMetadataForID
(classID));
// This check has been added to cope with defragment in debug mode: SlotDefragment#setIdentity()
// will trigger calling this constructor with a source db class metadata and a target db stream,
// thus _classMetadata==null. There may be a better solution, since this call is just meant to
// skip the object header.
_headerAttributes = SlotFormat().ReadHeaderAttributes((ByteArrayBuffer)reader);
}
public virtual void CascadeActivationToChild(object obj)
{
if (obj == null)
{
return;
}
IActivationContext cascadingContext = ForObject(obj);
Db4objects.Db4o.Internal.ClassMetadata classMetadata = cascadingContext.ClassMetadata
();
if (classMetadata == null || !classMetadata.HasIdentity())
{
return;
}
CascadeActivation(cascadingContext.Descend());
}
internal virtual IPreparedComparison PrepareComparison(ObjectContainerBase container
, object constraint)
{
IContext context = container.Transaction.Context();
if (_fieldMetadata != null)
{
return(_fieldMetadata.PrepareComparison(context, constraint));
}
if (_classMetadata != null)
{
return(_classMetadata.PrepareComparison(context, constraint));
}
IReflector reflector = container.Reflector();
Db4objects.Db4o.Internal.ClassMetadata classMetadata = null;
if (_bytes != null)
{
classMetadata = container.ProduceClassMetadata(reflector.ForObject(constraint));
}
else
{
if (_member != null)
{
classMetadata = container.ClassMetadataForReflectClass(reflector.ForObject(_member
));
}
}
if (classMetadata != null)
{
if (_member != null && _member.GetType().IsArray)
{
ITypeHandler4 arrayElementTypehandler = classMetadata.TypeHandler();
if (reflector.Array().IsNDimensional(MemberClass()))
{
MultidimensionalArrayHandler mah = new MultidimensionalArrayHandler(arrayElementTypehandler
, false);
return(mah.PrepareComparison(context, _member));
}
ArrayHandler ya = new ArrayHandler(arrayElementTypehandler, false);
return(ya.PrepareComparison(context, _member));
}
return(classMetadata.PrepareComparison(context, constraint));
}
return(null);
}
protected void Analyze(ObjectContainerBase container, object obj, ArrayInfo info)
{
// TODO: Move as much analysis as possible to ReflectArray#analyze()
ArrayReflector(container).Analyze(obj, info);
IReflectClass claxx = ComponentType(container, obj);
Db4objects.Db4o.Internal.ClassMetadata classMetadata = container.ProduceClassMetadata
(claxx);
bool primitive = IsPrimitive(container.Reflector(), claxx, classMetadata);
if (primitive)
{
claxx = classMetadata.ClassReflector();
}
info.Primitive(primitive);
info.ReflectClass(claxx);
AnalyzeDimensions(container, obj, info);
}
private void CheckInstanceOfCompare()
{
if (_member is ICompare)
{
_member = ((ICompare)_member).Compare();
LocalObjectContainer stream = Container();
_classMetadata = stream.ClassMetadataForReflectClass(stream.Reflector().ForObject
(_member));
_key = stream.GetID(Transaction(), _member);
if (_key == 0)
{
SetBytes(null);
}
else
{
SetBytes(stream.ReadBufferById(Transaction(), _key));
}
}
}
internal virtual Db4objects.Db4o.Internal.ClassMetadata ReadClassMetadata()
{
if (_classMetadata == null)
{
Read();
if (_bytes != null)
{
Seek(0);
ObjectContainerBase stream = Container();
ObjectHeader objectHeader = new ObjectHeader(stream, _bytes);
_classMetadata = objectHeader.ClassMetadata();
if (_classMetadata != null)
{
if (stream._handlers.IclassCompare.IsAssignableFrom(_classMetadata.ClassReflector
()))
{
ReadThis(false);
}
}
}
}
return _classMetadata;
}
private bool DetectClassMetadata(Transaction trans, IReflectClass claxx)
{
_classMetadata = _container.GetActiveClassMetadata(claxx);
if (_classMetadata != null)
{
if (!_classMetadata.IsStorable())
{
NotStorable(_obj, claxx);
return(false);
}
return(true);
}
_classMetadata = _container.ProduceClassMetadata(claxx);
if (_classMetadata == null || !_classMetadata.IsStorable())
{
NotStorable(_obj, claxx);
return(false);
}
// The following may return a reference if the object is held
// in a static variable somewhere ( often: Enums) that gets
// stored or associated on initialization of the ClassMetadata.
_ref = trans.ReferenceForObject(_obj);
return(true);
}
public ObjectReference(Db4objects.Db4o.Internal.ClassMetadata classMetadata, int
id) : this(id)
{
_class = classMetadata;
}
protected IReflectClass ClassReflector(IReflector reflector, Db4objects.Db4o.Internal.ClassMetadata
classMetadata, bool isPrimitive)
{
return(_versionHelper.ClassReflector(reflector, classMetadata, isPrimitive));
}
protected bool IsPrimitive(IReflector reflector, IReflectClass claxx, Db4objects.Db4o.Internal.ClassMetadata
classMetadata)
{
return(_versionHelper.IsPrimitive(reflector, claxx, classMetadata));
}
public ClassNode(Db4objects.Db4o.Internal.ClassMetadata clazz)
{
_clazz = clazz;
}
public ObjectHeader(Db4objects.Db4o.Internal.ClassMetadata classMetadata, IReadWriteBuffer
reader) : this(null, classMetadata, reader)
{
}
public virtual void ClassMetadata(Db4objects.Db4o.Internal.ClassMetadata classMetadata
)
{
_classMetadata = classMetadata;
}
public StandardReferenceTypeHandler(Db4objects.Db4o.Internal.ClassMetadata classMetadata
)
{
ClassMetadata(classMetadata);
}
public virtual void ClassMetadata(ClassMetadata classMetadata)
{
_classMetadata = classMetadata;
}
protected override int InternalDeclaredAspectCount(Db4objects.Db4o.Internal.ClassMetadata
classMetadata)
{
return(context.ReadInt());
}