Immutable entities with Raven DB

Whenever you are trying to use a non-default constructor for your entity, do the following to avoid falling into serialization problems with JSON.Net and raven:

• add a private constructor ... even if it is empty
• Ensure every readonly property has a "Private setter" on it ... else it won't get populated

• Use a custom Json resolver like this one:

  public class PrivatePropertySetterResolver : DefaultContractResolver
  {
     protected override JsonProperty CreateProperty(JsonObjectContract contract, MemberInfo member)
     {
         var prop = base.CreateProperty(contract, member);
         if (!prop.Writable)
         {
             var property = member as PropertyInfo;
             if (property != null)
             {
                 var hasPrivateSetter = property.GetSetMethod(true) != null;
                 prop.Writable = hasPrivateSetter;
             }
         }
         return prop;
     }
  }