Protobuf_CyclicIssue.cs

using System;
using System.Collections.Generic;
using System.Diagnostics;
using System.IO;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using ProtoBuf;

namespace TestProtoBufSerialization
{
    class Protobuf_CyclicIssue
    {
        void Main()
        {
            var st = new ST() { Id = "ST001" };
            var si = new SI() { Id = "SI001" };

            st.Indexes = new List<SI>();
            st.Indexes.Add(si);
            si.ST = st;


            ST newST = serializeDeserializeWithProto<ST>(st, "testing_cyclic_references");

            Debug.Assert(st != null, "ST is null!");
        }

        private static T serializeDeserializeWithProto<T>(T input, string fileName)
        {
            using (var file = File.Create(fileName + ".bin"))
            {
                Serializer.Serialize(file, input);
            }

            T output;
            using (var file = File.OpenRead(fileName + ".bin"))
            {
                output = Serializer.Deserialize<T>(file);
            }

            string proto = Serializer.GetProto<T>();
            File.WriteAllText(typeof(T).ToString() + "_proto.txt", proto, Encoding.ASCII);

            Console.WriteLine(proto);

            return output;
        }

        #region public repro

        [ProtoContract(ImplicitFields = ImplicitFields.AllPublic, AsReferenceDefault = true)]
        [ProtoInclude(101, typeof(ST))]
        [ProtoInclude(102, typeof(SI))]
        public class Base
        {
            public string CreateBy { get; set; }
            public string ModifiedBy { get; set; }
        }

        [ProtoContract(ImplicitFields = ImplicitFields.AllPublic, AsReferenceDefault = true)]
        public class ST : Base
        {
            public string Id { get; set; }

            [ProtoMember(103, AsReference=true)]
            public List<SI> Indexes { get; set; }
        }

        [ProtoContract(ImplicitFields = ImplicitFields.AllPublic, AsReferenceDefault = true)]
        public class SI : Base
        {
            public string Id { get; set; }
            public ST ST { get; set; }
        }

        #endregion
    }
}