Slightly better

ViewController.swift

class ProductDataAdapter {
    private var database: FMDatabase?
    init() {
        var paths: [Any] = NSSearchPathForDirectoriesInDomains(.documentDirectory, .userDomainMask, true)
        var docsPath: String = paths[0]
        var path: String = URL(fileURLWithPath: docsPath).appendingPathComponent("abc.sqlite").absoluteString
        database = FMDatabase(path: path)
    }

    func getProducts() -> Array {
        openConnection()
        var resultSet: FMResultSet? = database.executeQuery("SELECT * FROM products")
        var listOfProducts = [Any]()
        while resultSet?.next() {
            var dictionary: [Any: Any]? = [
                    "code" : resultSet?.string(forColumn: "code"),
                    "name" : resultSet?.string(forColumn: "name"),
                    "id" : Int(resultSet?.int(forColumn: "id"))
                ]

            listOfProducts.append(dictionary)
        }
        var sortByFav = NSSortDescriptor(key: "favorite", ascending: false)
        var sortByName = NSSortDescriptor(key: "name", ascending: true)
        return (listOfProducts as NSArray).sortedArray(using: [sortByFav, sortByName])
    }

    private func openConnection() {
        guard let database = database else { return }
        database.open()
    }
}

class ViewController {
    private let dataAdapter: ProductDataAdapter! 
    private var arrayOfProducts: [NSDictionary]!

    override func viewDidLoad(_ animated: Bool) {
        super.viewDidLoad();

        dataAdapter = ProductDataAdapter()
    }

    override func viewDidAppear(_ animated: Bool) {
        arrayOfProducts = dataAdapter.getProducts();
        setupView();
        self.aTableView.reloadData()
    }

    private func setupView() {
        self.view.backgroundColor = UIColor(patternImage: UIImage(named: "splash_bg"))
        self.aTableView.backgroundColor = UIColor.clear
    }
}