/*
* This method will be called on form submission, handling POST request for
* saving employee in database. It also validates the user input
*/
@RequestMapping(
value = {"/new"},
method = RequestMethod.POST)
public String saveEmployee(@Valid Employee employee, BindingResult result, ModelMap model) {
if (result.hasErrors()) {
return "registration";
}
/*
* Preferred way to achieve uniqueness of field [ssn] should be
* implementing custom @Unique annotation and applying it on field [ssn]
* of Model class [Employee].
*
* Below mentioned peace of code [if block] is to demonstrate that you
* can fill custom errors outside the validation framework as well while
* still using internationalized messages.
*/
if (!service.isEmployeeSsnUnique(employee.getId(), employee.getSsn())) {
FieldError ssnError =
new FieldError(
"employee",
"ssn",
messageSource.getMessage(
"non.unique.ssn", new String[] {employee.getSsn()}, Locale.getDefault()));
result.addError(ssnError);
return "registration";
}
employee.setId(service.getNext().intValue());
service.saveEmployee(employee);
model.addAttribute("success", "Employee " + employee.getName() + " registered successfully");
return "success";
}
/*
* This method will be called on form submission, handling POST request for
* updating employee in database. It also validates the user input
*/
@RequestMapping(
value = {"/edit-{ssn}-employee"},
method = RequestMethod.POST)
public String updateEmployee(
@Valid Employee employee, BindingResult result, ModelMap model, @PathVariable String ssn) {
if (result.hasErrors()) {
return "registration";
}
if (!service.isEmployeeSsnUnique(employee.getId(), employee.getSsn())) {
FieldError ssnError =
new FieldError(
"employee",
"ssn",
messageSource.getMessage(
"non.unique.ssn", new String[] {employee.getSsn()}, Locale.getDefault()));
result.addError(ssnError);
return "registration";
}
service.updateEmployee(employee);
model.addAttribute("success", "Employee " + employee.getName() + " updated successfully");
return "success";
}
/*
* This method will delete an employee by it's SSN value.
*/
@RequestMapping(
value = {"/delete-{ssn}-employee"},
method = RequestMethod.GET)
public String deleteEmployee(@PathVariable String ssn) {
service.deleteEmployeeBySsn(ssn);
return "redirect:/list";
}
/*
* This method will provide the medium to update an existing employee.
*/
@RequestMapping(
value = {"/edit-{ssn}-employee"},
method = RequestMethod.GET)
public String editEmployee(@PathVariable String ssn, ModelMap model) {
Employee employee = service.findEmployeeBySsn(ssn);
model.addAttribute("employee", employee);
model.addAttribute("edit", true);
return "registration";
}
/*
* This method will list all existing employees.
*/
@RequestMapping(
value = {"/", "/list"},
method = RequestMethod.GET)
public String listEmployees(ModelMap model) {
List<Employee> employees = service.findAllEmployees();
model.addAttribute("employees", employees);
return "allemployees";
}