我正在使用 Marc Gravell 的ProtoBuf-net库(r480,net20)来序列化/反序列化包含<object, object>
已知类型字典的自定义类,该字典用于服务器/客户端场景(均为 C#)。
这将取代我们当前使用 BinaryFormatter 的方法。
作为基础,我遵循这里提出的建议:
protobuf-and-listobject-how-to-serialize- deserialize和这里 protobuf-and-listobject-how-to-serialize-deserialize。
目前的方法有一些缺点,我希望更熟悉 Protobuf-net 的人可以给我一个关于如何改进它的提示。
- 在 OnSerialising() 调用上将字典复制
<object, object>
到字典。<ProtoObject, ProtoObject>
- 添加新类型的维护开销(每个都需要 ProtoInclude 标记和 ProtoObject.Create(object obj) 中的相应转换逻辑)
- ProtoObject 必须知道所有必需的类型。这会导致项目之间的循环引用问题,这只能通过对项目结构进行更大的重构来解决。
理想情况下,我想使用 RuntimeTypeModel 方法,但我不知道如何让客户端知道类型(编译 TypeModel dll 并将其传输到客户端?)。
同样在第一个主题中,Marc Gravell 提到即将推出的“运行时可扩展模式”可能会有所帮助,有谁知道这些是否已经实现以及它们是如何工作的?
无论我得到什么回复,我都非常感谢,如果我能澄清更多,请告诉我。
无论如何,感谢 Marc Gravell 的精彩图书馆 :)。
这是代码:
[Serializable]
[ProtoContract]
public class Attributes : IXmlSerializable, IEnumerable, IEquatable<Attributes>, ICloneable
{
// Non ProtoBuf-net relevant code was removed
private Dictionary<object, object> attributes = new Dictionary<object, object>();
[ProtoMember(1)]
private Dictionary<ProtoObject, ProtoObject> protoDictionary;
[OnSerializing]
public void OnSerializing(StreamingContext context)
{
this.protoDictionary = new ProtoDictionary();
foreach (var attribute in attributes)
{
this.protoDictionary.Add(ProtoObject.Create(attribute.Key), ProtoObject.Create(attribute.Value));
}
}
[OnDeserialized]
public void OnDeserialized(StreamingContext context)
{
if (this.protoDictionary != null)
{
this.attributes = new SerializableHashtable();
foreach (var o in this.protoDictionary)
{
this.attributes.Add(o.Key.Value, o.Value.Value);
}
}
}
}
[ProtoContract]
[ProtoInclude(1, typeof(ProtoObject<bool>))]
[ProtoInclude(2, typeof(ProtoObject<byte>))]
[ProtoInclude(3, typeof(ProtoObject<sbyte>))]
[ProtoInclude(4, typeof(ProtoObject<ushort>))]
[ProtoInclude(5, typeof(ProtoObject<short>))]
[ProtoInclude(6, typeof(ProtoObject<uint>))]
[ProtoInclude(7, typeof(ProtoObject<int>))]
[ProtoInclude(8, typeof(ProtoObject<ulong>))]
[ProtoInclude(9, typeof(ProtoObject<long>))]
[ProtoInclude(10, typeof(ProtoObject<float>))]
[ProtoInclude(11, typeof(ProtoObject<double>))]
[ProtoInclude(12, typeof(ProtoObject<decimal>))]
[ProtoInclude(13, typeof(ProtoObject<string>))]
[ProtoInclude(20, typeof(ProtoObject<Vector2F>))]
[ProtoInclude(21, typeof(ProtoObject<Vector3F>))]
[ProtoInclude(22, typeof(ProtoObject<Shape>))]
[ProtoInclude(23, typeof(ProtoObject<SharedUser>))]
[ProtoInclude(24, typeof(ProtoObject<SharedShip>))]
//[ProtoInclude(25, typeof(ProtoObject<IVehicleConfiguration>))] // Requires Steering dll -> cyclic reference
[ProtoInclude(26, typeof(ProtoObject<DroneState>))]
[ProtoInclude(27, typeof(ProtoObject<BuffCode>))]
[ProtoInclude(28, typeof(ProtoObject<ItemAttribute>))]
[ProtoInclude(40, typeof(ProtoObject<List<int>>))]
public abstract class ProtoObject
{
protected ProtoObject()
{
}
// Replaces public static ProtoObject<T> Create<T>(T value)
// in order to use the actual type of the object
public static ProtoObject Create(object obj)
{
if (obj is bool)
{
return new ProtoObject<bool>((bool)obj);
}
if (obj is byte)
{
return new ProtoObject<byte>((byte)obj);
}
// etc. for all required types
return null;
}
public static ProtoObject Create(bool obj)
{
TypeModel.Add(obj.GetType(), true);
return new ProtoObject<bool>(obj);
}
public static ProtoObject Create(byte obj)
{
return new ProtoObject<byte>(obj);
}
// ... public static ProtoObject Create(type obj) -> for all required types
public object Value
{
get { return ValueImpl; }
set { ValueImpl = value; }
}
protected abstract object ValueImpl { get; set; }
}
[ProtoContract]
public sealed class ProtoObject<T> : ProtoObject
{
public ProtoObject()
{
}
public ProtoObject(T value)
{
Value = value;
}
[ProtoMember(1)]
public new T Value { get; set; }
protected override object ValueImpl
{
get { return Value; }
set { Value = (T)value; }
}
public override string ToString()
{
return Value.ToString();
}
}