如何从EF6序列化DbCompiledModel？

Question

我正在就这个问题提出建议：

EF6 code first: How to load DbCompiledModel from EDMX file on startup?

我想将DbCompiledModel序列化为磁盘，因此我可以稍后对其进行反序列化并缩短启动时间。它需要序列化属性和字段，包括私有属性。

由于以下原因，我下面的三次尝试都失败了。我怎么能序列化DbCompiledModel的私人内容？

的BinaryFormatter

我通过BinaryFormatter的第一次尝试：

var compiledModel = modelBuilder.Build(new DbProviderInfo("System.Data.SqlClient", "2012")).Compile();
var bf = new BinaryFormatter();
var fs = new FileStream("C:\\temp\\bf.txt", FileMode.Create);
bf.Serialize(fs, compiledModel);
fs.Close();

因以下原因失败：

Type 'System.Data.Entity.Infrastructure.DbCompiledModel' in Assembly 'EntityFramework, Version=6.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089' is not marked as serializable.

Json＃1

我第二次尝试通过Json使用自定义合约解析程序来包含私有字段：

var settings = new JsonSerializerSettings() { ContractResolver = new MyContractResolver()};
var json = JsonConvert.SerializeObject(compiledModel, settings);
System.IO.File.WriteAllText("C:\\temp\\json.json", json);

...
    private class MyContractResolver : Newtonsoft.Json.Serialization.DefaultContractResolver
    {
        protected override IList<JsonProperty> CreateProperties(Type type, MemberSerialization memberSerialization)
        {
            var props = type.GetProperties(BindingFlags.Public | BindingFlags.NonPublic | BindingFlags.Instance)
                            .Select(p => base.CreateProperty(p, memberSerialization))
                        .Union(type.GetFields(BindingFlags.Public | BindingFlags.NonPublic | BindingFlags.Instance)
                                   .Select(f => base.CreateProperty(f, memberSerialization)))
                        .ToList();
            props.ForEach(p => { p.Writable = true; p.Readable = true; });
            return props;
        }
    }

因以下原因失败：

Self referencing loop detected for property 'ProviderManifest' with type 'System.Data.Entity.Core.Metadata.Edm.Provider.EdmProviderManifest'. Path '_workspace._metadataWorkspace._itemsCSpace.ValueForDebugDisplay[0].ProviderManifest._facetDescriptions.['Edm.String'][0].FacetType'.

Json＃2

我的第三次尝试调整了Json中的ReferenceLoopHandling和PreserveReferencesHandling设置：

var settings = new JsonSerializerSettings() { ContractResolver = new MyContractResolver(), ReferenceLoopHandling = ReferenceLoopHandling.Ignore};
//OR SETTINGS:
var settings = new JsonSerializerSettings() { ContractResolver = new MyContractResolver(), ReferenceLoopHandling = ReferenceLoopHandling.Ignore, PreserveReferencesHandling = PreserveReferencesHandling.Objects };
var json = JsonConvert.SerializeObject(compiledModel, settings);
System.IO.File.WriteAllText("C:\\temp\\json.json", json);

由于StackOverflowException而失败。