private function createDataMapper($entityClass)
    {
        /** @var DataMapperInterface $dataMapper */
        $dataMapperClass = isset($this->config['dataMapper']) ? $this->config['dataMapper'] : DoctrineDataMapper::class;

        $meta = $this->builder->getMeta($entityClass);

        if ($meta->storage['type'] == 'api') {
            $dataMapperClass = $meta->storage['handler'];
        }

        switch ($dataMapperClass) {
            case CsvDataMapper::class:
                $connectionClass = CsvDataGateway::class;

                break;

            default:
                $connectionClass = Connection::class;

                break;
        }

        $dataMapper = new $dataMapperClass(
            $this->getConnection($connectionClass),
            $entityClass,
            $meta->storage['table'],
            $this->entityRegistry
        );

        if ($dataMapper instanceof DispatcherAwareInterface) {
            $dataMapper->setDispatcher($this->getDispatcher());
        }

        return $dataMapper;
    }