bool Process(BlockType blockType, ByteBuffer block, IEventStoreObserver observer)
{
if ((blockType & BlockType.Compressed) != 0)
{
CompressionStrategy.Decompress(ref block);
}
var reader = new ByteBufferReader(block);
if ((blockType & BlockType.HasTypeDeclaration) != 0)
{
Mapping.LoadTypeDescriptors(reader);
}
var metadata = (blockType & BlockType.HasMetadata) != 0 ? Mapping.LoadObject(reader) : null;
uint eventCount;
if ((blockType & BlockType.HasOneEvent) != 0)
{
eventCount = 1;
}
else if ((blockType & BlockType.HasMoreEvents) != 0)
{
eventCount = reader.ReadVUInt32();
}
else
{
eventCount = 0;
}
var readEvents = observer.ObservedMetadata(metadata, eventCount);
if (!readEvents) return observer.ShouldStopReadingNextEvents();
var events = new object[eventCount];
for (var i = 0; i < eventCount; i++)
{
events[i] = Mapping.LoadObject(reader);
}
observer.ObservedEvents(events);
return observer.ShouldStopReadingNextEvents();
}
public void ProcessMetadataLog(ByteBuffer buffer)
{
var reader = new ByteBufferReader(buffer);
var typeId = reader.ReadVInt32();
while (typeId != 0)
{
var typeCategory = (TypeCategory)reader.ReadUInt8();
ITypeDescriptor descriptor;
switch (typeCategory)
{
case TypeCategory.BuildIn:
throw new ArgumentOutOfRangeException();
case TypeCategory.Class:
descriptor = new ObjectTypeDescriptor(this, reader, NestedDescriptorReader);
break;
case TypeCategory.List:
descriptor = new ListTypeDescriptor(this, reader, NestedDescriptorReader);
break;
case TypeCategory.Dictionary:
descriptor = new DictionaryTypeDescriptor(this, reader, NestedDescriptorReader);
break;
case TypeCategory.Enum:
descriptor = new EnumTypeDescriptor(this, reader);
break;
default:
throw new ArgumentOutOfRangeException();
}
while (-typeId - 1 >= _id2InfoNew.Count)
_id2InfoNew.Add(null);
if (_id2InfoNew[-typeId - 1] == null)
_id2InfoNew[-typeId - 1] = new SerializerTypeInfo { Id = typeId, Descriptor = descriptor };
typeId = reader.ReadVInt32();
}
for (var i = 0; i < _id2InfoNew.Count; i++)
{
_id2InfoNew[i].Descriptor.MapNestedTypes(d =>
{
var placeHolderDescriptor = d as PlaceHolderDescriptor;
return placeHolderDescriptor != null ? _id2InfoNew[-placeHolderDescriptor.TypeId - 1].Descriptor : d;
});
}
// This additional cycle is needed to fill names of recursive structures
for (var i = 0; i < _id2InfoNew.Count; i++)
{
_id2InfoNew[i].Descriptor.MapNestedTypes(d => d);
}
for (var i = 0; i < _id2InfoNew.Count; i++)
{
var infoForType = _id2InfoNew[i];
for (var j = ReservedBuildinTypes; j < _id2Info.Count; j++)
{
if (infoForType.Descriptor.Equals(_id2Info[j].Descriptor))
{
_remapToOld[infoForType.Descriptor] = _id2Info[j].Descriptor;
_id2InfoNew[i] = _id2Info[j];
infoForType = _id2InfoNew[i];
break;
}
}
if (infoForType.Id < 0)
{
infoForType.Id = _id2Info.Count;
_id2Info.Add(infoForType);
_typeOrDescriptor2Info[infoForType.Descriptor] = infoForType;
}
}
for (var i = 0; i < _id2InfoNew.Count; i++)
{
_id2InfoNew[i].Descriptor.MapNestedTypes(d =>
{
ITypeDescriptor res;
return _remapToOld.TryGetValue(d, out res) ? res : d;
});
}
_id2InfoNew.Clear();
_remapToOld.Clear();
}
internal MemorizedPosition(ByteBufferReader owner, int pos, int end)
{
_owner = owner;
_pos = pos;
_end = end;
}