使用protobuf-net序列化对象数组以供C ++使用

时间:2014-10-23 19:46:11

标签: c# c++ protobuf-net

我按照以下答案here中的说明构建了一些类,以便能够序列化通用对象列表;例如KeyValuePair和KeyValuePair的实例。

不幸的是,GetProto()方法生成的.proto文件似乎不会生成可以为C ++正确解析的文件。为数组生成的子类型消息后缀为" []"。 protoc.exe在" []"上窒息在编译C ++时。

由于protobuf的消息名称似乎是任意的(也就是说,它们实际上并未包含在数据流中),因此可以告诉protobuf-net使用" _Array"而不是" []"什么时候命名子类型?或者我是否应该采取其他途径,以便生成的.proto文件可以被C ++应用程序使用?

谢谢,

以下是相关代码和生成的原型文件。

基类是:

[DataContract]
[ProtoInclude(101, typeof(KeyValuePairResponse<string>))]
[ProtoInclude(102, typeof(KeyValuePairResponse<int>))]
[ProtoInclude(103, typeof(KeyValuePairResponse<double>))]
[ProtoInclude(111, typeof(KeyValuePairResponse<string[]>))]
[ProtoInclude(112, typeof(KeyValuePairResponse<int[]>))]
[ProtoInclude(113, typeof(KeyValuePairResponse<double[]>))]
public abstract class KeyValuePairResponse
{
    protected KeyValuePairResponse() { }

    [DataMember(Order = 1, IsRequired = true)]
    public string Key { get; set; }

    public object Value
    {
        get
        {
            return this.ValueImplementation;
        }

        set
        {
            this.ValueImplementation = value;
        }
    }

    protected abstract object ValueImplementation { get; set; }

    public static KeyValuePairResponse<T> Create<T>(string key, T value)
    {
        return new KeyValuePairResponse<T>(key, value);
    }
}

,泛型类是:

[DataContract]
public sealed class KeyValuePairResponse<T> : KeyValuePairResponse
{
    public KeyValuePairResponse()
    {
    }

    public KeyValuePairResponse(string key, T value)
    {
        this.Key = key;
        this.Value = value;
    }

    [DataMember(Order = 2, IsRequired = true)]
    public new T Value { get; set; }

    protected override object ValueImplementation
    {
        get
        {
            return this.Value;
        }

        set
        {
            this.Value = (T)value;
        }
    }
}

GetProto<KeyValuePairResponse>()创建的.proto文件如下所示:

message KeyValuePairResponse {
   required string Key = 1;
   // the following represent sub-types; at most 1 should have a value
   optional KeyValuePairResponse_String KeyValuePairResponse_String = 101;
   optional KeyValuePairResponse_Int32 KeyValuePairResponse_Int32 = 102;
   optional KeyValuePairResponse_Double KeyValuePairResponse_Double = 103;
   optional KeyValuePairResponse_String[] KeyValuePairResponse_String[] = 111;
   optional KeyValuePairResponse_Int32[] KeyValuePairResponse_Int32[] = 112;
   optional KeyValuePairResponse_Double[] KeyValuePairResponse_Double[] = 113;
}
message KeyValuePairResponse_Double {
   required double Value = 2 [default = 0];
}
message KeyValuePairResponse_Double[] {
   repeated double Value = 2;
}
message KeyValuePairResponse_Int32 {
   required int32 Value = 2 [default = 0];
}
message KeyValuePairResponse_Int32[] {
   repeated int32 Value = 2;
}
message KeyValuePairResponse_String {
   required string Value = 2;
}
message KeyValuePairResponse_String[] {
   repeated string Value = 2;
}

1 个答案:

答案 0 :(得分:1)

这只是GetProto中的一个错误。我建议将它记录在github protobuf-net列表中,如果你喜欢冒险,甚至可以提交拉取请求。

目前: Ctrl + h (查找和替换)可能是您的朋友。