private object WriteAndRead(object obj)
{
var imaginativeID = 500;
var @ref = new ObjectReference(ClassMetadataForObject(obj), imaginativeID
);
@ref.SetObject(obj);
var marshallingContext = new MarshallingContext(Trans(), @ref, Container
().UpdateDepthProvider().ForDepth(int.MaxValue), true);
Handlers4.Write(@ref.ClassMetadata().TypeHandler(), marshallingContext, obj);
var pointer = marshallingContext.AllocateSlot();
var buffer = marshallingContext.ToWriteBuffer(pointer);
buffer.Seek(0);
// String str = new String(buffer._buffer);
// System.out.println(str);
var unmarshallingContext = new UnmarshallingContext(Trans(), @ref
, Const4.AddToIdTree, false);
unmarshallingContext.Buffer(buffer);
unmarshallingContext.ActivationDepth(new LegacyActivationDepth(5));
return unmarshallingContext.Read();
}
public virtual void WriteUpdate(Db4objects.Db4o.Internal.Transaction transaction,
IUpdateDepth updatedepth)
{
ContinueSet(transaction, updatedepth);
// make sure, a concurrent new, possibly triggered by objectOnNew
// is written to the file
// preventing recursive
if (!BeginProcessing())
{
return;
}
object obj = GetObject();
if (!ObjectCanUpdate(transaction, obj) || !IsActive() || obj == null || !ClassMetadata
().IsModified(obj))
{
EndProcessing();
return;
}
MarshallingContext context = new MarshallingContext(transaction, this, updatedepth
, false);
if (context.UpdateDepth().Negative())
{
EndProcessing();
return;
}
ObjectContainerBase container = transaction.Container();
LogEvent(container, "update", Const4.State);
SetStateClean();
context.PurgeFieldIndexEntriesOnUpdate(transaction, container._handlers.ArrayType
(obj));
Handlers4.Write(_class.TypeHandler(), context, obj);
if (context.UpdateDepth().CanSkip(this))
{
EndProcessing();
return;
}
Pointer4 pointer = context.AllocateSlot();
ByteArrayBuffer buffer = context.ToWriteBuffer(pointer);
container.WriteUpdate(transaction, pointer, _class, container._handlers.ArrayType
(obj), buffer);
if (IsActive())
{
SetStateClean();
}
EndProcessing();
container.Callbacks().ObjectOnUpdate(transaction, this);
ClassMetadata().DispatchEvent(transaction, obj, EventDispatchers.Update);
}
/// <summary>return false if class not completely initialized, otherwise true</summary>
internal virtual bool ContinueSet(Db4objects.Db4o.Internal.Transaction trans, IUpdateDepth
updateDepth)
{
if (!BitIsTrue(Const4.Continue))
{
return true;
}
if (!_class.StateOK())
{
return false;
}
if (!_class.AspectsAreInitialized())
{
return false;
}
if (DTrace.enabled)
{
DTrace.Continueset.Log(GetID());
}
BitFalse(Const4.Continue);
MarshallingContext context = new MarshallingContext(trans, this, updateDepth, true
);
Handlers4.Write(ClassMetadata().TypeHandler(), context, GetObject());
Pointer4 pointer = context.AllocateSlot();
ByteArrayBuffer buffer = context.ToWriteBuffer(pointer);
ObjectContainerBase container = trans.Container();
container.WriteNew(trans, pointer, _class, buffer);
object obj = _object;
ObjectOnNew(trans, obj);
if (_class.HasIdentity())
{
_object = container.NewWeakReference(this, obj);
}
SetStateClean();
EndProcessing();
return true;
}