1

如何Option[Timestamp]*.proto文件中描述以下案例类:

case class User(name: String, created: Option[Timestamp] = None)

*.proto包含:

   message User {
     string name = 1;
     how_to_describe_type_of_timestamp created = 2; // ???
   }
4

1 回答 1

2

看起来您正在使用“proto3”(因为没有requiredor optionalon name),在这种情况下:一切都是可选的;也许很简单:

syntax = "proto3";
import "google/protobuf/timestamp.proto";
message User {
     string name = 1;
     .google.protobuf.Timestamp created = 2;
}

如果这是“proto2”,那么大概是:

syntax = "proto2";
import "google/protobuf/timestamp.proto";
message User {
     required string name = 1;
     optional .google.protobuf.Timestamp created = 2;
}
于 2018-03-22T11:43:20.200 回答