具有字典属性的protobuf-net类

Question

鉴于以下课程,

public static void Test()
{
  var bigDictionary = new Dictionary<string, TestClass>();
  bigDictionary.Add("entry1", new TestClass());
  bigDictionary.Add("entry2", new TestClass());
  bigDictionary.Add("entry3", new TestClass());

  // EDIT: Added these lines
  bigDictionary["entry1"].MyDictionary.Add(1, new SecondTestClass() { MyVar = "hello" });
  bigDictionary["entry1"].MyDictionary.Add(2, new SecondTestClass() { MyVar = "world" });
  bigDictionary["entry2"].MyDictionary.Add(1, new SecondTestClass() { MyVar = "please" });
  bigDictionary["entry2"].MyDictionary.Add(2, new SecondTestClass() { MyVar = "work" });

  using (var file = System.IO.File.Create("test.temp"))
  {
    ProtoBuf.Serializer.Serialize(file, bigDictionary);
  }

  Dictionary<string, TestClass> outDict = null;
  using (var file = System.IO.File.OpenRead("test.temp"))
  {
    outDict = ProtoBuf.Serializer.Deserialize<Dictionary<string, TestClass>>(file);
  }

  // EDIT: You'll notice these asserts fail
  System.Diagnostics.Debug.Assert(outDict["entry1"].MyDictionary.ContainsKey(1));
  System.Diagnostics.Debug.Assert(outDict["entry1"].MyDictionary.ContainsKey(2));
  System.Diagnostics.Debug.Assert(outDict["entry2"].MyDictionary.ContainsKey(1));
  System.Diagnostics.Debug.Assert(outDict["entry2"].MyDictionary.ContainsKey(2));

}

[System.Runtime.Serialization.DataContract]
public class TestClass
{
  public TestClass()
  {
    MyDictionary = new Dictionary<int,SecondTestClass>();
  }

  [System.Runtime.Serialization.DataMember]
  public Dictionary<int, SecondTestClass> MyDictionary { get; set; }
}

[System.Runtime.Serialization.DataContract]
public class SecondTestClass
{
  [System.Runtime.Serialization.DataMember]
  public string MyVar { get; set; }
}

(如何)我可以bigDictionary序列化而不抛出以下异常？

"Only data-contract classes (and lists/arrays of such) can be processed (error processing Dictionary`2)"

(我尝试使用DataContract/DataMember ProtoContract/ProtoMember等进行标记,但似乎没有任何工作)

在此先感谢您的帮助.

编辑:似乎我有点解决了.鉴于上面编辑的代码,您会注意到断言失败.所以看起来内部字典根本没有被序列化.但是,如果我将DataContract标签更改为Protobuf.ProtoContract(和DataMember到ProtoMember),它会正确地拾取内部字典.

我误用了库还是这个bug？

Answer 1

答案是抛出的异常有点误导，它是字典中对象的序列化错误，而不是字典本身。我正在处理的实际实现比我给出的示例稍微复杂一些，因此有一个对象类型的变量破坏了它。