DatabaseServiceProvider.php

<?php

namespace App\Providers;

use Illuminate\Support\ServiceProvider;
use App\Database\DatabaseConnectionFactory;

/**
 * Class DatabaseServiceProvider
 *
 * @package App\Providers
 */
class DatabaseServiceProvider extends ServiceProvider
{
    /**
     * Register the application services.
     *
     * @return void
     */
    public function register()
    {
        $this->app->singleton('db.factory', function ($app) {
            return new DatabaseConnectionFactory($app);
        });
    }
}