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Protobuf-net:序列化包含Dictionary的自定義類<object, object>

[英]Protobuf-net: serializing a custom class containing a Dictionary<object, object>

我正在使用Marc Gravell的ProtoBuf-net庫(r480,net20)來序列化/反序列化包含在服務器/客戶端場景(C#中)中使用的已知類型的Dictionary <object, object>的自定義類。
這將使用BinaryFormatter取代我們當前的方法。
作為基礎,我遵循這里提出的建議: protobuf-and-listobject-how-to-serialize -deserializeprotobuf-listobject-how-to-serialize-deserialize

目前的方法有一些缺點,我希望更熟悉Protobuf-net的人可以給我一個如何改進它的暗示。

  1. <ProtoObject, ProtoObject> ()調用<ProtoObject, ProtoObject> Dictionary <object, object>復制到Dictionary <ProtoObject, ProtoObject>
  2. 添加新類型的維護開銷(每個類需要ProtoInclude標記和ProtoObject.Create(對象obj)中的相應強制轉換邏輯)
  3. ProtoObject必須知道所有必需的類型。 這會導致項目之間的循環引用問題,這只能通過更大的項目結構重構來解決。

理想情況下,我想使用RuntimeTypeModel方法,但我不知道如何讓客戶端知道類型(編譯和傳輸TypeModel dll到客戶端?)。

同樣在第一個主題中,Marc Gravell提到即將推出的“運行時可擴展模式”可能會有所幫助,是否有人知道這些模式是否已實現以及它們如何工作?
我非常感謝我得到的任何回復,如果我能澄清更多內容,請告訴我。
無論如何,多虧Marc Gravell的神奇圖書館:)。

這是代碼:

[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();
    }
}

序列化Dictionary<object,object>根本就不是一個受支持的用例...我個人認為你應該更多地考慮使用特定於用途的DTO模型,就像使用XmlSerializerDataContractSerializerJavascriptSerializer protobuf-net最終仍然是一個合同序列化器,DTO模型是理想的用例。 它通常適用於非DTO模型,但這不是一個開放的保證,它將適用於每個可能設計的模型。

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