DbContextTypeMatcher test

MyDbContextTypeMatcher.cs

using System;
using System.Collections.Generic;
using System.Linq;
using Abp.Collections.Extensions;
using Abp.Dependency;
using Abp.Domain.Uow;
using Abp.EntityFramework.Repositories;
using Abp.MultiTenancy;

namespace Abp.EntityFramework
{
    public class MyDbContextTypeMatcher : IDbContextTypeMatcher
    {
        private readonly ICurrentUnitOfWorkProvider _currentUnitOfWorkProvider;
        private readonly Dictionary<Type, List<Type>> _dbContextTypes;

        public MyDbContextTypeMatcher(ICurrentUnitOfWorkProvider currentUnitOfWorkProvider)
        {
            _currentUnitOfWorkProvider = currentUnitOfWorkProvider;
            _dbContextTypes = new Dictionary<Type, List<Type>>();
        }

        public virtual void Add(Type sourceDbContextType, Type targetDbContextType)
        {
            if (!_dbContextTypes.ContainsKey(sourceDbContextType))
            {
                _dbContextTypes[sourceDbContextType] = new List<Type>();
            }

            _dbContextTypes[sourceDbContextType].Add(targetDbContextType);
        }

        public virtual Type GetConcreteType(Type sourceDbContextType)
        {
            //TODO: This can also get MultiTenancySide to filter dbcontexes

            //TODO: Can be optimized by extracting/caching MultiTenancySideAttribute attributes for DbContexes.

            //Get possible concrete types for given DbContext type
            var allTargetTypes = _dbContextTypes.GetOrDefault(sourceDbContextType);

            if (allTargetTypes.IsNullOrEmpty())
            {
                //Not found any target type, return the given type if it's not abstract
                if (sourceDbContextType.IsAbstract)
                {
                    throw new AbpException("Could not find a concrete implementation of given DbContext type: " + sourceDbContextType.AssemblyQualifiedName);
                }

                return sourceDbContextType;
            }

            if (allTargetTypes.Count == 1)
            {
                //Only one type does exists, return it
                return allTargetTypes[0];
            }

            //Will decide the target type with current UOW, so it should be in a UOW.
            if (_currentUnitOfWorkProvider.Current == null)
            {
                throw new AbpException("GetConcreteType method should be called in a UOW.");
            }

            var currentTenancySide = _currentUnitOfWorkProvider.Current.GetTenantId() == null
                ? MultiTenancySides.Host
                : MultiTenancySides.Tenant;

            var multiTenancySideContexes = allTargetTypes.Where(type =>
            {
                var attrs = type.GetCustomAttributes(typeof(MultiTenancySideAttribute), true);
                if (attrs.IsNullOrEmpty())
                {
                    return false;
                }

                return ((MultiTenancySideAttribute)attrs[0]).Side.HasFlag(currentTenancySide);
            }).ToList();

            //Try to get the DbContext which is for current multitenancy side.
            if (multiTenancySideContexes.Count == 1)
            {
                return multiTenancySideContexes[0];
            }

            //Try to get the DbContext which not defined AutoRepositoryTypesAttribute
            var defaultRepositoryContexes = allTargetTypes.Where(type => !type.IsDefined(typeof(AutoRepositoryTypesAttribute), true)).ToList();
            if (defaultRepositoryContexes.Count == 1)
            {
                return defaultRepositoryContexes[0];
            }

            //Generating exception

            if (multiTenancySideContexes.Count > 1)
            {
                throw new AbpException(string.Format(
                    "Found more than one concrete type for given DbContext Type ({0}) define MultiTenancySideAttribute with {1}. Found types: {2}.",
                    sourceDbContextType,
                    currentTenancySide,
                    multiTenancySideContexes.JoinAsString(", ")
                    ));
            }

            throw new AbpException(string.Format(
                "Found more than one concrete type for given DbContext Type ({0}) but none of them defines MultiTenancySideAttribute with {1}. Found types: {2}.",
                sourceDbContextType,
                currentTenancySide,
                multiTenancySideContexes.JoinAsString(", ")
                ));
        }
    }
}

Maybe your that code is a bit old. Can you share UserLinkAppService's CreateLinkedUsersQuery method?

Here it is.I have manually merged all the code changes according to the latest version.Did I miss something here ?

 private async Task<IQueryable<LinkedUserDto>> CreateLinkedUsersQuery(string sorting)
        {
            var currentUserIdentifier = AbpSession.ToUserIdentifier();
            var currentUserAccount = await _userLinkManager.GetUserAccountAsync(AbpSession.ToUserIdentifier());

            return (from userAccount in _userAccountRepository.GetAll()
                    join tenant in _tenantRepository.GetAll() on userAccount.TenantId equals tenant.Id into tenantJoined
                    from tenant in tenantJoined.DefaultIfEmpty()
                    where
                        (userAccount.TenantId != currentUserIdentifier.TenantId ||
                        userAccount.UserId != currentUserIdentifier.UserId) &&
                        userAccount.UserLinkId.HasValue &&
                        userAccount.UserLinkId == currentUserAccount.UserLinkId
                    select new LinkedUserDto
                    {
                        Id = userAccount.UserId,
                        TenantId = userAccount.TenantId,
                        TenancyName = tenant == null ? "." : tenant.TenancyName,
                        Username = userAccount.UserName,
                        LastLoginTime = userAccount.LastLoginTime
                    }).OrderBy(sorting);
        }

I will want help from my partner to check this. For now, can you change GetRecentlyUsedLinkedUsers method to just return an empty list to see if there are any other problems.

I have done this.But still the same error.

 recentlyUsedlinkedUsers.Clear();
 return new ListResultOutput<LinkedUserDto>(recentlyUsedlinkedUsers);

It's coming on this line : Before the Clear() method.

var recentlyUsedlinkedUsers = await query.Skip(0).Take(3).ToListAsync();

More info about the issue.Please see that.

Hi,
Shall I put this issue on the Main repo or is this place enough ?

Please continue on https://github.com/aspnetzero/aspnet-zero/issues/224

Hi! I also have the problem of "Found more than one concrete type for given dbcontext type" after I upgrade from 0.8.2.0 to 0.9.3.0. Actually, I use DD design and i have many bounded contexts based on modules i have. Those bounded contexts uses only one single database or one connection string. For 0.8.2.0 version, I can do it without any problems and no need to define a custom repository since different bounded contexts contain different entities mapping and ASP.NET Zero design is smart enough to use the right bounded context. Here, i would like to confirm, for version 0.9.3.0, do i need to define each custom repository for each bounded context i have or is there anyway I can still enjoy using one repository for all bounded contexts?