MappingConventions.cs

public class MappingConventions
{
  public static void Initialize()
  {
      var __conventionPack = new ConventionPack()
      {
          new IgnoreIfNullConvention(true),
          new NamedIdMemberConvention("Id"),
          new CamelCaseElementNameConvention(),
          new NamedExtraElementsMemberConvention("ExtraElements"),
          new ReadWriteMemberFinderConvention(),
          new IgnoreExtraElementsConvention(false),
          new NamedParameterCreatorMapConvention(),
          new StringObjectIdIdGeneratorConvention(),
          new SimpleIdGeneratorConvention()
      };

      ConventionRegistry.Register("Conventions",
                                  __conventionPack,
                                  type => type.Namespace != null && (type.Namespace.Contains(".Domain")));

      RegisterAllStoredTypes();
  }
  
  public static void RegisterAllStoredTypes()
  {
      var __storedTypes = Assembly.GetAssembly(typeof(Entity))
          .GetTypes()
          .Where(t => t.IsAbstract == false
              && t.IsGenericType == false &&
              typeof(IStoredEntity).IsAssignableFrom(t))
          .Where(t => BsonClassMap.IsClassMapRegistered(t) == false);

      __storedTypes
          .ForEach(t => typeof(BsonClassMap)
                            .GetMethods()
                            .First(m => m.Name == "RegisterClassMap" && m.IsGenericMethod)
                            .MakeGenericMethod(t)
                            .Invoke(null, null));
  }
  
  #region Nested type: SimpleIdGeneratorConvention

  public class SimpleIdGeneratorConvention : ConventionBase, IPostProcessingConvention
  {
      private readonly IPostProcessingConvention _default = new LookupIdGeneratorConvention();

      public void PostProcess(BsonClassMap classMap)
      {
          var __idMemberMap = classMap.IdMemberMap;
          if (__idMemberMap != null)
          {
              if (__idMemberMap.MemberInfo.Name == "Id" && __idMemberMap.MemberInfo.DeclaringType == typeof(string))
                  __idMemberMap.SetIdGenerator(new StringObjectIdGenerator());

              _default.PostProcess(classMap);
          }
      }
  }

  #endregion
}