Mongo C# inheritance in subtypes failure.

BoardMemberPersistence.cs

//------------------------------------------------------------------------------
// <auto-generated>This code was generated by LLBLGen Pro v5.0.</auto-generated>
//------------------------------------------------------------------------------
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace IHMMDocs.MongoDB.Persistence
{
	/// <summary>Static class for (extension) methods for fetching and projecting instances of IHMMDocs.MongoDB.DocumentClasses.BoardMember from / to the entity model.</summary>
	public static partial class BoardMemberPersistence
	{
		/// <summary>Extension method which produces a projection to IHMMDocs.MongoDB.DocumentClasses.BoardMember which instances are projected from the 
		/// results of the specified baseQuery, which returns IHMM.Adapter.EntityClasses.BoardMemberEntity instances, the root entity of the derived element returned by this query.</summary>
		/// <param name="baseQuery">The base query to project the derived element instances from.</param>
		/// <returns>IQueryable to retrieve IHMMDocs.MongoDB.DocumentClasses.BoardMember instances</returns>
		public static IQueryable<IHMMDocs.MongoDB.DocumentClasses.BoardMember> ProjectToBoardMember(this IQueryable<IHMM.Adapter.EntityClasses.BoardMemberEntity> baseQuery)
		{
			return baseQuery.Select(p__0 => new IHMMDocs.MongoDB.DocumentClasses.BoardMember()
			{
				CompanyCar = new IHMMDocs.MongoDB.DocumentClasses.BoardMemberTypes.CompanyCar()
				{
					Brand = p__0.CompanyCar.Brand,
					CarId = p__0.CompanyCar.CarId,
				},
				CompanyCarId = p__0.CompanyCarId,
				EmployeeId = p__0.EmployeeId,
				ManagesDepartmentId = p__0.ManagesDepartmentId,
				ManagesDepartmentName = p__0.ManagesDepartment.Name,
				Name = p__0.Name,
				StartDate = p__0.StartDate,
				WorksForDepartment = new IHMMDocs.MongoDB.DocumentClasses.BoardMemberTypes.WorksForDepartment()
				{
					Employees = p__0.WorksForDepartment.Employees.OfType<IHMM.Adapter.EntityClasses.EmployeeEntity>()
						.Where(p__1 => !(p__1 is IHMM.Adapter.EntityClasses.ManagerEntity) &&
										!(p__1 is IHMM.Adapter.EntityClasses.ClerkEntity) &&
										!(p__1 is IHMM.Adapter.EntityClasses.BoardMemberEntity))
						.Select(p__1 => new IHMMDocs.MongoDB.DocumentClasses.BoardMemberTypes.WorksForDepartmentTypes.Employee()
						{
							Name = p__1.Name,
						})
						.Union(p__0.WorksForDepartment.Employees.OfType<IHMM.Adapter.EntityClasses.ManagerEntity>()
								.Where(p__1 => !(p__1 is IHMM.Adapter.EntityClasses.BoardMemberEntity))
								.Select(p__1 => new IHMMDocs.MongoDB.DocumentClasses.BoardMemberTypes.WorksForDepartmentTypes.EmployeeManager()
								{
									ManagesDepartment = new IHMMDocs.MongoDB.DocumentClasses.BoardMemberTypes.WorksForDepartmentTypes.EmployeeManagerTypes.ManagesDepartment()
									{
										DepartmentId = p__1.ManagesDepartment.DepartmentId,
										DepartmentType = p__1.ManagesDepartment.DepartmentType,
										MeetingRoomCode = p__1.ManagesDepartment.MeetingRoomCode,
										Name = p__1.ManagesDepartment.Name,
									},
									ManagesDepartmentId = p__1.ManagesDepartmentId,
								}))
						.Union(p__0.WorksForDepartment.Employees.OfType<IHMM.Adapter.EntityClasses.ClerkEntity>()
								.Select(p__1 => new IHMMDocs.MongoDB.DocumentClasses.BoardMemberTypes.WorksForDepartmentTypes.EmployeeClerk()
								{
									JobDescription = p__1.JobDescription,
								}))
						.Union(p__0.WorksForDepartment.Employees.OfType<IHMM.Adapter.EntityClasses.BoardMemberEntity>()
								.Select(p__1 => new IHMMDocs.MongoDB.DocumentClasses.BoardMemberTypes.WorksForDepartmentTypes.EmployeeBoardMember()
								{
									CompanyCarId = p__1.CompanyCarId,
								}))
						.ToList(),
					Name = p__0.WorksForDepartment.Name,
				},
				WorksForDepartmentId = p__0.WorksForDepartmentId,
			});
		}
	}
}


 

BsonClassMappings.cs

//------------------------------------------------------------------------------
// <auto-generated>This code was generated by LLBLGen Pro v5.0.</auto-generated>
//------------------------------------------------------------------------------
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using MongoDB.Bson.Serialization;

namespace IHMMDocs.MongoDB.Persistence
{
	/// <summary>Static class which contains the Bson class mappings for the document classes defined in the Derived Model 'Docs'.</summary>
	public static partial class BsonClassMappings
	{
		/// <summary>Method to register all bson class mappings for the document classes of the derived model</summary>
		public static void RegisterClassMappings()
		{
			BsonClassMap.RegisterClassMap<IHMMDocs.MongoDB.DocumentClasses.BoardMember>(cm=>
			{
				cm.AutoMap();
				cm.MapIdProperty(t=>t.EmployeeId);
				AdditionalBoardMemberMappings(cm);
			});
			BsonClassMap.RegisterClassMap<IHMMDocs.MongoDB.DocumentClasses.BoardMemberTypes.CompanyCar>(cm => cm.SetIsRootClass(true));
			BsonClassMap.RegisterClassMap<IHMMDocs.MongoDB.DocumentClasses.BoardMemberTypes.CompanyCarSportsCar>();
			BsonClassMap.RegisterClassMap<IHMMDocs.MongoDB.DocumentClasses.BoardMemberTypes.CompanyCarFamilyCar>();
			BsonClassMap.RegisterClassMap<IHMMDocs.MongoDB.DocumentClasses.BoardMemberTypes.WorksForDepartmentTypes.Employee>(cm => cm.SetIsRootClass(true));
			BsonClassMap.RegisterClassMap<IHMMDocs.MongoDB.DocumentClasses.BoardMemberTypes.WorksForDepartmentTypes.EmployeeManager>();
			BsonClassMap.RegisterClassMap<IHMMDocs.MongoDB.DocumentClasses.BoardMemberTypes.WorksForDepartmentTypes.EmployeeBoardMember>();
			BsonClassMap.RegisterClassMap<IHMMDocs.MongoDB.DocumentClasses.BoardMemberTypes.WorksForDepartmentTypes.EmployeeClerk>();

			BsonClassMap.RegisterClassMap<IHMMDocs.MongoDB.DocumentClasses.Clerk>(cm=>
			{
				cm.AutoMap();
				cm.MapIdProperty(t=>t.EmployeeId);
				AdditionalClerkMappings(cm);
			});

			BsonClassMap.RegisterClassMap<IHMMDocs.MongoDB.DocumentClasses.Employee>(cm=>
			{
				cm.AutoMap();
				cm.MapIdProperty(t=>t.EmployeeId);
				AdditionalEmployeeMappings(cm);
			});

			BsonClassMap.RegisterClassMap<IHMMDocs.MongoDB.DocumentClasses.Manager>(cm=>
			{
				cm.AutoMap();
				AdditionalManagerMappings(cm);
			});

		}

		static partial void AdditionalBoardMemberMappings(BsonClassMap<IHMMDocs.MongoDB.DocumentClasses.BoardMember> cm);
		static partial void AdditionalClerkMappings(BsonClassMap<IHMMDocs.MongoDB.DocumentClasses.Clerk> cm);
		static partial void AdditionalEmployeeMappings(BsonClassMap<IHMMDocs.MongoDB.DocumentClasses.Employee> cm);
		static partial void AdditionalManagerMappings(BsonClassMap<IHMMDocs.MongoDB.DocumentClasses.Manager> cm);
	}
}

Result.json

{
  "_id": 4,
  "CompanyCar": {
    "_t": "CompanyCar"
  },
  "CompanyCarId": 1,
  "ManagesDepartmentId": 1,
  "ManagesDepartmentName": "Marketing Europe",
  "Name": "Boardmember 1",
  "StartDate": {
    "$date": 1198767184770
  },
  "WorksForDepartment": {
    "Employees": [
      {
        "_t": [
          "Employee",
          "EmployeeManager",
          "EmployeeBoardMember"
        ],
        "CompanyCarId": 1
      }
    ],
    "Name": "Board Europe"
  },
  "WorksForDepartmentId": 2
}

ResultFromRavenDB.json

/* same code, json result after insert in RavenDB instead of MongoDB */
{
    "CompanyCar": {
        "Brand": "Fiat",
        "CarId": 1
    },
    "CompanyCarId": 1,
    "ManagesDepartmentId": 1,
    "ManagesDepartmentName": "Marketing Europe",
    "Name": "Boardmember 1",
    "StartDate": "2007-12-27T15:53:04.7700000",
    "WorksForDepartment": {
        "Employees": [
            {
                "$type": "IHMMDocs.RavenDB.DocumentClasses.BoardMemberTypes.WorksForDepartmentTypes.EmployeeBoardMember, IHMMDocs.RavenDB",
                "CompanyCarId": 1,
                "ManagesDepartment": null,
                "ManagesDepartmentId": null,
                "Name": null
            }
        ],
        "Name": "Board Europe"
    },
    "WorksForDepartmentId": 2
}

Unittest_for_Insert.cs

		private MongoClient _client;
		private IMongoDatabase _ihDatabase;
		
		[TestFixtureSetUp]
		public void Init()
		{
			BsonClassMappings.RegisterClassMappings();

			_client = new MongoClient("mongodb://192.168.0.54:27017");
			_ihDatabase = _client.GetDatabase("InheritanceOne");
		}
// ...
[Test]
public async Task InsertBoardMember()
{
	using(var adapter = new DataAccessAdapter())
	{
		var metaData = new LinqMetaData(adapter);
		var toInsert = metaData.BoardMember.ProjectToBoardMember().FirstOrDefault();
		Assert.IsNotNull(toInsert);

		var collection = _ihDatabase.GetCollection<BoardMember>("Default");
		await collection.DeleteOneAsync(b=>b.EmployeeId == 4);
		await collection.InsertOneAsync(toInsert);
	}
}

Unittest_for_read.cs

// this fails
[Test]
public async Task ReadBoardMember()
{
	using(var adapter = new DataAccessAdapter())
	{
		var metaData = new LinqMetaData(adapter);
		var ob = metaData.BoardMember.ProjectToBoardMember().FirstOrDefault();
		Assert.IsNotNull(ob);
		var collection = _ihDatabase.GetCollection<BoardMember>("Default");
		var b = await collection.Find<BoardMember>(x=>x.EmployeeId == 4).FirstOrDefaultAsync();
		Assert.IsNotNull(b);
		Assert.AreEqual(ob.CompanyCarId, b.CompanyCarId);
		Assert.AreEqual(ob.ManagesDepartmentId, b.ManagesDepartmentId);
		Assert.AreEqual(ob.ManagesDepartmentName, b.ManagesDepartmentName);
		Assert.AreEqual(ob.Name, b.Name);
		Assert.AreEqual(ob.StartDate.ToUniversalTime(), b.StartDate.ToUniversalTime());
		Assert.AreEqual(ob.WorksForDepartmentId, b.WorksForDepartmentId);
		Assert.AreEqual(ob.CompanyCar.Brand, b.CompanyCar.Brand);	// fails, data isn't read as it's not available in DB
		Assert.AreEqual(ob.CompanyCar.CarId, b.CompanyCar.CarId);
		Assert.AreEqual(ob.WorksForDepartment.Name, b.WorksForDepartment.Name);
		Assert.AreEqual(ob.WorksForDepartment.Employees[0].GetType(), b.WorksForDepartment.Employees[0].GetType());
		Assert.AreEqual(((IHMMDocs.MongoDB.DocumentClasses.BoardMemberTypes.WorksForDepartmentTypes.EmployeeBoardMember)ob.WorksForDepartment.Employees[0]).CompanyCarId,
						((IHMMDocs.MongoDB.DocumentClasses.BoardMemberTypes.WorksForDepartmentTypes.EmployeeBoardMember)b.WorksForDepartment.Employees[0]).CompanyCarId);
	}
}