SRP2

 public class DataMapper<TEntity, TIDType, TLinqEntity> : IDataMapper<TEntity, TIDType, TLinqEntity>
where TEntity : AbstractBaseData<TIDType>
where TLinqEntity : EntityObject
    {
        public IList<TEntity> GetEntitiesFromEF(IList<TLinqEntity> linqEntities)
        {
            Mapper.Initialize
            (
            cfg =>
            {
                cfg.CreateMap<TLinqEntity, TEntity>();
                cfg.CreateMap<TEntity, TLinqEntity>();
            }
            );
            var listOfEntities = Mapper.Map<IList<TLinqEntity>, IList<TEntity>>(linqEntities);
            return listOfEntities;
        }
    }
    //Hàm GetAll sẽ có dạng như sau:
    public virtual IList<TEntity> GetAll()
    {
        var entities = this.SelectAll();
        var listOfEntites = Factory.CreateDataMapper<TEntity, TIDType, TLinqEntity>().GetEntitiesFromEF(entities);
        return listOfEntites;
    }