private ResponseBase InitializeUpdate(UpdateRangeCommand command, KeyValuePair <Type, string> property,
                                              HttpInformation context, SapphireDbContext db)
        {
            object[] updateValues = command.UpdateValues.Values <JObject>().Select(newValue => newValue.ToObject(property.Key)).ToArray();

            UpdateRangeResponse response = new UpdateRangeResponse
            {
                ReferenceId = command.ReferenceId,
                Results     = updateValues.Select(updateValue =>
                {
                    if (!property.Key.CanUpdate(context, updateValue, serviceProvider))
                    {
                        return(command.CreateExceptionResponse <UpdateResponse>(
                                   "The user is not authorized for this action."));
                    }

                    object[] primaryKeys = property.Key.GetPrimaryKeyValues(db, updateValue);
                    object value         = db.Find(property.Key, primaryKeys);

                    if (value != null)
                    {
                        db.Entry(value).State = EntityState.Detached;
                        return(ApplyChangesToDb(property, value, updateValue, db, context));
                    }

                    return(command.CreateExceptionResponse <UpdateResponse>("No value to update was found"));
                }).ToList()
            };


            db.SaveChanges();

            foreach (object value in updateValues)
            {
                property.Key.ExecuteHookMethods <UpdateEventAttribute>(ModelStoreEventAttributeBase.EventType.After, value, context, serviceProvider);
            }

            return(response);
        }
        private async Task <ResponseBase> InitializeUpdate(UpdateRangeCommand command, KeyValuePair <Type, string> property,
                                                           HttpInformation context, SapphireDbContext db)
        {
            List <object> updateValues = command.Entries.Select(e => e.Value)
                                         .Select(newValue => newValue.ToObject(property.Key))
                                         .ToList();

            UpdateRangeResponse response;
            bool updateRejected;

            do
            {
                updateRejected = false;

                response = new UpdateRangeResponse
                {
                    ReferenceId = command.ReferenceId,
                    Results     = updateValues.Select((updateValue, index) =>
                    {
                        if (!property.Key.CanUpdate(context, updateValue, serviceProvider))
                        {
                            return((UpdateResponse)command.CreateExceptionResponse <UpdateResponse>(
                                       "The user is not authorized for this action."));
                        }

                        object[] primaryKeys = property.Key.GetPrimaryKeyValues(db, updateValue);
                        object value         = db.Find(property.Key, primaryKeys);

                        if (value != null)
                        {
                            object previousValue = command.Entries[index].Previous?.ToObject(property.Key);
                            return(ApplyChangesToDb(property, value, updateValue, previousValue, db, context));
                        }

                        return((ValidatedResponseBase)CreateRangeCommandHandler
                               .SetPropertiesAndValidate <UpdateEventAttribute>(db, property, updateValue, context,
                                                                                serviceProvider));
                    }).ToList()
                };

                try
                {
                    db.SaveChanges();
                }
                catch (DbUpdateConcurrencyException)
                {
                    foreach (EntityEntry entityEntry in db.ChangeTracker.Entries())
                    {
                        await entityEntry.ReloadAsync();
                    }

                    updateRejected = true;
                }
            } while (updateRejected);

            foreach (object value in updateValues)
            {
                property.Key.ExecuteHookMethods <UpdateEventAttribute>(ModelStoreEventAttributeBase.EventType.After, value, context, serviceProvider);
            }

            return(response);
        }