OOP1 - StoreGUI

Transcript

1. Apple Store GUI Project / Object Oriented Programming I Manatsawin / Varis / Mintra
2. Register Default login:
 admin/admin Guest login
3. Register Type: Common/VIP/Wisdom/Admin Must read T&C before continuing Default login:
 admin/admin Guest login
4. Register Type: Common/VIP/Wisdom/Admin Must read T&C before continuing Default login:
 admin/admin Guest login
5. Register Type: Common/VIP/Wisdom/Admin Must read T&C before continuing Default login:
 admin/admin Guest login
6. Register Type: Common/VIP/Wisdom/Admin Must read T&C before continuing Default login:
 admin/admin Guest login
7. Main menu Admin! Can access all commands Customer! Can order Guest! Can view products
8. Take order Two pages of products Shopping cart Double click to remove from cart
9. Take order Two pages of products Shopping cart Double click to remove from cart
10. Take order • After order is taken, bill will be printed
11. Bills Double click to reprint bill Export to excel Search using any column
12. Bills Double click to reprint bill Export to excel Search using any column
13. Calculator
14. Backend
15. Static • Many things were stored in static fields • Bills, Customers are stored in static ArrayList • Get a bill: Bill.bills.get(0); • Try a login:
 Customer.checkLogin(“username”, “password”);
16. HashMap • Like ArrayList, but with key-value pair. • HashMap<String, String> hm = new HashMap<String, String>();
 hm.add(“key”, “value”);
 hm.get(“key”); // return “value” • Used to implement a basic key-value database with ArrayList as value • All data in store are saved to a static HashMap in FileStorage class
17. Serializable • We don’t use our own save format, we use Java’s serializable format. • Just implement interface “Serializable” in classes and let Java do it magic. • HashMap, array, primitive types, ArrayList are implementors of Serializable interface • Read more: http://pagist.info/6f66495127be09d45180
 (available in my Facebook)
18. Serializable Storing HashMap
19. Facade • We have a lot of things to save and load: • Customer • Store stock data • Bills • Solution: Facade save
20. Facade • Instead of firing save for every objects, there is an method that will do it. • To save: Persistent.save(); • Will call save for Customer, Bills, Stock and save to file.
22. Thank you
24. Cut slides Nothing to see here, move along!
25. Cut slides Nothing to see here, move along!
26. Cloud backup • Move data between computer or to backup data • Store with the same key will download the same data. • Using OpenKeyVal service (openkeyval.org)
27. Cloud • OpenKeyVal is simple: • POST http://api.openkeyval.org/STOREGUI_default_data
 data = …. • GET http://api.openkeyval.org/STOREGUI_default_data
 Return the data given (try this URL in your browser) • storedata.txt is sent to OpenKeyVal using base64 encoding to make it plain text
28. Singleton • Object that have only one instance in an application Singleton - instance : Singleton + getInstance() : Singleton class Singleton{ private static Singleton instance = new Singleton(); public Singleton getInstance(){ return instance; } }
29. Singleton • Store and shopping cart is singleton • No need to pass store instance around, just Store.getInstance() everywhere • Fixed a whole lot of bugs dealing with data inconsistent in pages. • Shopping cart’s singleton is required to save development time due to existing code structure