コード例 #1
0
        private T ReadFullObject <T>(int pos)
        {
            var hdr = BinaryObjectHeader.Read(Stream, pos);

            // Validate protocol version.
            BinaryUtils.ValidateProtocolVersion(hdr.Version);

            try
            {
                // Already read this object?
                object hndObj;

                if (_hnds != null && _hnds.TryGetValue(pos, out hndObj))
                {
                    return((T)hndObj);
                }

                if (hdr.IsUserType && _mode == BinaryMode.ForceBinary)
                {
                    BinaryObject portObj;

                    if (_detach)
                    {
                        Stream.Seek(pos, SeekOrigin.Begin);

                        portObj = new BinaryObject(_marsh, Stream.ReadByteArray(hdr.Length), 0, hdr);
                    }
                    else
                    {
                        portObj = new BinaryObject(_marsh, Stream.GetArray(), pos, hdr);
                    }

                    T obj = _builder == null ? TypeCaster <T> .Cast(portObj) : TypeCaster <T> .Cast(_builder.Child(portObj));

                    AddHandle(pos, obj);

                    return(obj);
                }
                else
                {
                    // Find descriptor.
                    var desc = _marsh.GetDescriptor(hdr.IsUserType, hdr.TypeId);

                    // Instantiate object.
                    if (desc.Type == null)
                    {
                        if (desc is BinarySurrogateTypeDescriptor)
                        {
                            throw new BinaryObjectException("Unknown type ID: " + hdr.TypeId);
                        }

                        throw new BinaryObjectException("No matching type found for object [typeId=" +
                                                        desc.TypeId + ", typeName=" + desc.TypeName + ']');
                    }

                    // Preserve old frame.
                    var  oldHdr       = _curHdr;
                    int  oldPos       = _curPos;
                    var  oldStruct    = _curStruct;
                    bool oldRaw       = _curRaw;
                    var  oldSchema    = _curSchema;
                    var  oldSchemaMap = _curSchemaMap;

                    // Set new frame.
                    _curHdr = hdr;
                    _curPos = pos;
                    SetCurSchema(desc);
                    _curStruct = new BinaryStructureTracker(desc, desc.ReaderTypeStructure);
                    _curRaw    = false;

                    // Read object.
                    Stream.Seek(pos + BinaryObjectHeader.Size, SeekOrigin.Begin);

                    var obj = desc.Serializer.ReadBinary <T>(this, desc.Type, pos);

                    _curStruct.UpdateReaderStructure();

                    // Restore old frame.
                    _curHdr       = oldHdr;
                    _curPos       = oldPos;
                    _curStruct    = oldStruct;
                    _curRaw       = oldRaw;
                    _curSchema    = oldSchema;
                    _curSchemaMap = oldSchemaMap;

                    return(obj);
                }
            }
            finally
            {
                // Advance stream pointer.
                Stream.Seek(pos + hdr.Length, SeekOrigin.Begin);
            }
        }
コード例 #2
0
ファイル: BinaryReader.cs プロジェクト: zhanghenglei/ignite
        private T ReadFullObject <T>(int pos)
        {
            var hdr = BinaryObjectHeader.Read(Stream, pos);

            // Validate protocol version.
            BinaryUtils.ValidateProtocolVersion(hdr.Version);

            try
            {
                // Already read this object?
                object hndObj;

                if (_hnds != null && _hnds.TryGetValue(pos, out hndObj))
                {
                    return((T)hndObj);
                }

                if (hdr.IsUserType && _mode == BinaryMode.ForceBinary)
                {
                    BinaryObject portObj;

                    if (_detach)
                    {
                        Stream.Seek(pos, SeekOrigin.Begin);

                        portObj = new BinaryObject(_marsh, Stream.ReadByteArray(hdr.Length), 0, hdr);
                    }
                    else
                    {
                        portObj = new BinaryObject(_marsh, Stream.GetArray(), pos, hdr);
                    }

                    T obj = _builder == null ? TypeCaster <T> .Cast(portObj) : TypeCaster <T> .Cast(_builder.Child(portObj));

                    AddHandle(pos, obj);

                    return(obj);
                }
                else
                {
                    // Find descriptor.
                    IBinaryTypeDescriptor desc;

                    if (!_descs.TryGetValue(BinaryUtils.TypeKey(hdr.IsUserType, hdr.TypeId), out desc))
                    {
                        throw new BinaryObjectException("Unknown type ID: " + hdr.TypeId);
                    }

                    // Instantiate object.
                    if (desc.Type == null)
                    {
                        throw new BinaryObjectException("No matching type found for object [typeId=" +
                                                        desc.TypeId + ", typeName=" + desc.TypeName + ']');
                    }

                    // Preserve old frame.
                    var  oldHdr       = _curHdr;
                    int  oldPos       = _curPos;
                    var  oldStruct    = _curStruct;
                    bool oldRaw       = _curRaw;
                    var  oldSchema    = _curSchema;
                    var  oldSchemaMap = _curSchemaMap;

                    // Set new frame.
                    _curHdr = hdr;
                    _curPos = pos;
                    SetCurSchema(desc);
                    _curStruct = new BinaryStructureTracker(desc, desc.ReaderTypeStructure);
                    _curRaw    = false;

                    // Read object.
                    Stream.Seek(pos + BinaryObjectHeader.Size, SeekOrigin.Begin);

                    object obj;

                    var sysSerializer = desc.Serializer as IBinarySystemTypeSerializer;

                    if (sysSerializer != null)
                    {
                        obj = sysSerializer.ReadInstance(this);
                    }
                    else
                    {
                        try
                        {
                            obj = FormatterServices.GetUninitializedObject(desc.Type);

                            // Save handle.
                            AddHandle(pos, obj);
                        }
                        catch (Exception e)
                        {
                            throw new BinaryObjectException("Failed to create type instance: " +
                                                            desc.Type.AssemblyQualifiedName, e);
                        }

                        desc.Serializer.ReadBinary(obj, this);
                    }

                    _curStruct.UpdateReaderStructure();

                    // Restore old frame.
                    _curHdr       = oldHdr;
                    _curPos       = oldPos;
                    _curStruct    = oldStruct;
                    _curRaw       = oldRaw;
                    _curSchema    = oldSchema;
                    _curSchemaMap = oldSchemaMap;

                    // Process wrappers. We could introduce a common interface, but for only 2 if-else is faster.
                    var wrappedSerializable = obj as SerializableObjectHolder;

                    if (wrappedSerializable != null)
                    {
                        return((T)wrappedSerializable.Item);
                    }

                    var wrappedDateTime = obj as DateTimeHolder;

                    if (wrappedDateTime != null)
                    {
                        return(TypeCaster <T> .Cast(wrappedDateTime.Item));
                    }

                    return((T)obj);
                }
            }
            finally
            {
                // Advance stream pointer.
                Stream.Seek(pos + hdr.Length, SeekOrigin.Begin);
            }
        }