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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。

  1. 在 OnSerialising() 调用上将字典复制<object, object>到字典。<ProtoObject, ProtoObject>
  2. 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)
  3. 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();
    }
}
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1 回答 1

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简单地序列化 a不是一个受支持的用例......就个人而言,我认为您应该更多地考虑使用特定于使用的 DTO 模型,Dictionary<object,object>就像使用.或. protobuf-net 最终仍然是一个合约序列化器,DTO 模型是理想的用例。通常它适用于非 DTO 模型,但这并不能保证它适用于人们可能设计的每个模型。XmlSerializerDataContractSerializerJavascriptSerializer

于 2012-04-23T09:27:09.150 回答