Spring Boot - Apache Derby duplicating IDs of a ListArray objects - spring

Question

This little project follows a basic MVC pattern, i'm using spring boot and apache derby as an embedded data base.
1) When adding a hardcoded object list inside service class, they all share the same id. Is there an explanation for this behavior ?
This shows the problem (Don't mind the 'kkk' objects, i've solved that part already)
Screen1
So this is the object account i'm working with :
#Entity
public class Account {
#Id
#Column(name="id")
#GeneratedValue(strategy=GenerationType.IDENTITY)
private long id;
private String owner;
private double budget;
private double budgetInvest;
private double budgetFonction;
public Account() {
}
public Account(String owner, double budget, double budgetInvest, double budgetFonction
) {
this.owner=owner;
this.budget = budget;
this.budgetInvest = budgetInvest;
this.budgetFonction = budgetFonction;
}
public Account (String owner, double budget) {
this.owner = owner;
this.budget=budget;
}
public Account (String owner) {
this.owner=owner;
}
public long getId() {
return id;
}
public void setId(long id) {
this.id = id;
}
public double getBudget() {
return budget;
}
public void setBudget(double budget) {
this.budget = budget;
}
public double getBudgetInvest() {
return budgetInvest;
}
public void setBudgetInvest(double budgetInvest) {
this.budgetInvest = budgetInvest;
}
public double getBudgetFonction() {
return budgetFonction;
}
public void setBudgetFonction(double budgetFonction) {
this.budgetFonction = budgetFonction;
}
public String getOwner() {
return owner;
}
public void setOwner(String owner) {
this.owner = owner;
}
}
These are the lines responsible for displaying the objects inside the view :
<tr th:each="account : ${accounts}">
<td th:text="${account.id}">id</td>
<td><a href="#" th:text="${account.owner}">Title
...</a></td>
<td th:text="${account.budget}">Text ...</td>
</tr>
Here is the controller :
#Controller
public class AccountController {
#Autowired
private AccountService accountService;
#RequestMapping(value="/", method=RequestMethod.GET)
public String index() {
return "index";
}
#RequestMapping(value="/accountAdd", method=RequestMethod.GET)
public String addAccount(Model model) {
model.addAttribute("account", new Account());
return "accountAdd";
}
#RequestMapping(value="/accountAdd", method=RequestMethod.POST)
public String postAccount(#ModelAttribute Account account) {
accountService.addAccount(account);
return "redirect:listAccount";
}
#RequestMapping(value="/listAccount", method=RequestMethod.GET)
public String listAccount(Model model) {
System.out.println(accountService.getAllAccounts());
model.addAttribute("accounts",accountService.getAllAccounts());
return "listAccount";
}
}
And finally the service class :
#Service
public class AccountService {
#Autowired
private AccountRepository accountRepository;
public List<Account> getAllAccounts(){
List<Account>accounts = new ArrayList<>(Arrays.asList(
new Account("Maths Department",1000000,400000,600000),
new Account("Physics Department",7000000,200000,500000),
new Account("Science Department",3000000,700000,1000000)
));
accountRepository.findAll().forEach(accounts::add);
return accounts;
}
public Account getAccount(long id) {
return accountRepository.findById(id).orElse(null);
}
public void addAccount(Account account) {
accountRepository.save(account);
}
public void updateAccount(long id, Account account) {
accountRepository.save(account);
}
public void deleteAccount(long id) {
accountRepository.deleteById(id);
}
}

Answer 1

Ok, so while i haven't yet found the exact answer as to why it affects the same id for every object in a static list.
I found an elegant workaround to not only solve the issue but also enhance the structure of the code.
Instead of doing whatever barbaric initialization I was trying to perform, It's way better to do this inside the main class :
#SpringBootApplication
public class PayfeeApplication {
#Autowired
private AccountRepository accountRepository;
public static void main(String[] args) {
SpringApplication.run(PayfeeApplication.class, args);
}
#Bean
InitializingBean sendDatabase() {
return () -> {
accountRepository.save(new Account("Maths Department",1000000,400000,600000));
accountRepository.save(new Account("Physics Department",7000000,200000,500000));
accountRepository.save(new Account("Science Department",3000000,700000,1000000));
};
}
}