protobuf消息引用相同类型的另一个消息 [英] protobuf message holding reference to another message of same type

问题描述

我有一个 Player 结构，它保存指向它最近的邻居的指针列表。在C ++中的结构可能如下：

  struct Player {
 string handle; 
 vector< Player *>邻居
}; 
  

我想使用protobuf来序列化这个类的实例。我如何写一个消息定义来表示上述结构？

解决方案

protobuf中没有引用的概念。 / p>

因此，最简单的方法是：

 
 message Player { 
必需string handle = 1; 
 repeated string neighborHandles = 2; 
}; 
 

通常，当你完成反序列化时，你会将它们转换为C ++引用。

I have a Player structure which holds a list of pointers to its closest neighbors. The structure might look as follows in C++:

struct Player {
  string handle;
  vector<Player*> neighbors;
};

I want to use protobuf to serialize instances of this class. How would I write a message definition to represent the above structure?

解决方案

There is no concept of "reference" in protobuf.

Therefore the sanest way to do it would be to:

message Player {
  required string handle = 1;
  repeated string neighborHandles = 2;
};

Usually you would then convert them to C++ references when you are done deserializing.

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