NHibernate json proxy serialization with with ReferencesAny

Question

I have the following mapping:

    public class TimeLineEntityMap : BaseEntityMap<TimeLineEntity>
    {
        public TimeLineEntityMap()
        {
            Table("time_line_entity");
            Map(x => x.Message);
            Map(x => x.ResearchId, "research_id");//.Cascade.All().Not.LazyLoad();
            ReferencesAny(x => x.EntityRef)
                .AddMetaValue<EmailEntity>(typeof(EmailEntity).Name)
                .AddMetaValue<UrlEntity>(typeof(UrlEntity).Name)
                .AddMetaValue<PhoneEntity>(typeof(PhoneEntity).Name)
                .EntityTypeColumn("entity_type")
                .IdentityType<long>()
                .EntityIdentifierColumn("entity_ref_id")
                .Not.LazyLoad();
        }
    }

when fetching from the database EntityRef comes as a proxy.

TimeLineEntity res = timeLineRepository.Find(x => x.Id == id);
JsonConvert.SerializeObject(res);

the JsonConvert is throwing:

Newtonsoft.Json.JsonSerializationException: Self referencing loop detected for property 'ManifestModule' with type 'System.Reflection.RuntimeModule'. Path 'Data[0].EntityRef._proxyFactoryInfo._getIdentifierMethod.Module.Assembly'.

this is my json settings:

     x.SerializerSettings.ReferenceLoopHandling = ReferenceLoopHandling.Ignore;
     x.SerializerSettings.ContractResolver = new NHibernateContractResolver();

    public class NHibernateContractResolver : CamelCasePropertyNamesContractResolver
    {
        protected override JsonContract CreateContract(Type objectType)
        {
            if (typeof(NHibernate.Proxy.INHibernateProxy).IsAssignableFrom(objectType))
                return base.CreateContract(objectType.BaseType);
            else
                return base.CreateContract(objectType);
        }
    }

So what is your problem? – Amir Christian Oct 13 '19 at 08:23 — Amir Christian, Oct 13 '19 at 08:23
@AmirChristian see the exception message – SexyMF Oct 13 '19 at 09:05 — SexyMF, Oct 13 '19 at 09:05
plz share your model class.. – Amir Christian Oct 13 '19 at 09:21 — Amir Christian, Oct 13 '19 at 09:21

Amir Christian · Answer 1 · 2019-10-13T14:58:43.290

1

Try to add [JsonIgnore] on your model class like this:

[JsonIgnore]
public class TimeLineEntity {

}

UPDATE To get serialization of it You should resolve circular reference of map.

Below links will help you.(May be your answer already existed here.)

JSON.NET Error Self referencing loop detected for type

Resolve circular references from JSON object

Stringify (convert to JSON) a JavaScript object with circular reference

http://blogs.microsoft.co.il/gilf/2011/10/17/avoiding-circular-reference-for-entity-in-json-serialization/

Good luck.

edited Oct 13 '19 at 14:58

answered Oct 13 '19 at 09:34

Amir Christian

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6
20

But i need this data to be serialized – SexyMF Oct 13 '19 at 10:46

NHibernate json proxy serialization with with ReferencesAny

1 Answers1