Architecture - Part 1.pdf
- 1. Architecture - Part I
- 2. Architecture ✦Up until now the UI was pure mockup, we’ll start breaking it down into logical pieces by separating the business from the UI ✦The first step is figuring out the different pieces involved ✦The second step is integrating them into the code ✦Architecture is a process - we create an architecture by need and refine it as we move forward © Codename One 2017 all rights reserved
- 3. Menu Order Where do we Start? ✦I’ve discussed the Dish class the last time around so lets start from that point… © Codename One 2017 all rights reserved Dish
- 4. Where do we get a Dish from? ✦A dish is a part of a menu which happens to match out exact UI paradigm… But it’s also part of an order! © Codename One 2017 all rights reserved Dish Menu Order 1 1 * *
- 5. Where do we get a Dish from? ✦Where do we get those from? From the Restaurant… © Codename One 2017 all rights reserved Dish Menu Order Restaurant 1 1 * * 1 1 1 1
- 6. public class Menu implements PropertyBusinessObject { public final ListProperty<Dish, Menu> dishes = new ListProperty<>("dishes"); public final ListProperty<String, Menu> categories = new ListProperty<>("categories"); private final PropertyIndex idx = new PropertyIndex(this, "Menu", dishes, categories); @Override public PropertyIndex getPropertyIndex() { return idx; } } Menu
- 7. public class Order implements PropertyBusinessObject { public final Property<String, Order> id = new Property<>("id"); public final Property<Date, Order> date = new Property<>(“date”, Date.class); public final BooleanProperty<Order> purchased = new BooleanProperty<>("purchased"); public final MapProperty<Dish, Integer, Order> dishesQuantity = new MapProperty<>("dishesQuantity"); public final Property<String, Order> notes = new Property<>("notes"); private final PropertyIndex idx = new PropertyIndex(this, "Order", id, date, purchased, dishesQuantity, notes); @Override public PropertyIndex getPropertyIndex() { return idx; } } Order
- 8. public class Restaurant implements PropertyBusinessObject { public final Property<String, Restaurant> name = new Property<>("name"); public final Property<String, Restaurant> tagline = new Property<>("tagline"); public final Property<Image, Restaurant> logo = new Property<>("logo"); public final DoubleProperty<Restaurant> latitude = new DoubleProperty<>("latitude", 0.0); public final DoubleProperty<Restaurant> longitude = new DoubleProperty<>("longitude", 0.0); public final Property<String, Restaurant> navigationAddress = new Property<>("navigationAddress"); public final Property<String, Restaurant> address = new Property<>("address"); public final Property<String, Restaurant> phone = new Property<>("phone"); public final Property<String, Restaurant> website = new Property<>("website"); public final Property<String, Restaurant> currency = new Property<>("currency"); public final Property<Menu, Restaurant> menu = new Property<>("menu", new Menu()); public final Property<Order, Restaurant> cart = new Property<>("order", new Order()); private final PropertyIndex idx = new PropertyIndex(this, "Restaurant", name, tagline, logo, latitude, longitude, navigationAddress, address, phone, website, currency, menu, cart); @Override public PropertyIndex getPropertyIndex() { return idx; } Restaurant
- 9. private Restaurant(Properties p, Image img) { name.set(p.getProperty(name.getName())); tagline.set(p.getProperty(tagline.getName())); latitude.set(Double.valueOf(p.getProperty(latitude.getName()))); longitude.set(Double.valueOf(p.getProperty(longitude.getName()))); navigationAddress.set(p.getProperty(navigationAddress.getName())); address.set(p.getProperty(address.getName())); phone.set(p.getProperty(phone.getName())); website.set(p.getProperty(website.getName())); currency.set(p.getProperty(currency.getName())); logo.set(img); // Default hardcoded values e.g. list of Dish's menu.get(). categories.add("Entru00e9e"). categories.add("Mains"). categories.add("Deserts"). categories.add("Wines"). categories.add("Beverages"); Dish dsh = new Dish().name.set("My great dish"). description.set("Lorem ipsum dolor sit amet, consectetur adipiscing elit. " + "Maecenas pharetra leo quis sapien rutrum scelerisque. Aenean Restaurant
- 10. private static Restaurant instance; public static Restaurant getInstance() { if(instance == null) { try(InputStream io = Display.getInstance(). getResourceAsStream(Restaurant.class, "/settings.properties")) { Properties p = new Properties(); p.load(io); Image img = Image.createImage("/logo.png"); instance = new Restaurant(p, img); } catch(IOException err) { Log.e(err); } } return instance; } public String formatCurrency(double value) { return currency.get() + L10NManager.getInstance().format(value); } Restaurant