@OneToOne(fetch = FetchType.LAZY, mappedBy="employee")
@JsonManagedReference
@Cascade(value=org.hibernate.annotations.CascadeType.ALL)
private IdentityDoc identityDoc;

@OneToOne(fetch = FetchType.LAZY)
@JoinColumn(name="employee_id")
@JsonBackReference
private Employee employee;

@RequestMapping(value = "/persistAll", method = RequestMethod.POST, produces = MediaType.APPLICATION_JSON_UTF8_VALUE)
@ResponseBody public ResponseEntity persistAll(@RequestBody List<Employee> employeeList) {