how to properly design a controller and a jsp page for an entity that has three keys, two external and one internal? - spring

Question

I'm trying to make a Spring MVC application.I have 4 entities(Company,Pass_in_trip,Passenger,Trip) Pass_in_trip has 3 keys consisting of Passenger, Trip and Timestamp, I don't know how to properly issue a key and how to transfer it through the jsp page to the controller, and how to issue the controller itself, can anyone tell me?and also an interesting question is how to make a request to the database to search for a record using three keys.
Thanks
here's what I was able to write at the moment, see if there are any errors somewhere
#Entity
#Table(name="company")
public class Company implements Serializable {
#Id
#GeneratedValue(strategy = IDENTITY)
#Column(name="id_comp")
private int id_comp;
#Column(name="name")
private String name;
//Getters and Setters
#Entity
#Table (name="pass_in_trip")
public class Pass_in_trip implements Serializable {
#EmbeddedId
private KeysPass_in_trip key=new KeysPass_in_trip();
#Column(name="place")
private String place;
//Getters and Setters
#Embeddable
public class KeysPass_in_trip implements Serializable{
#NotNull
#JoinColumn(name="date")
private Timestamp date=new Timestamp(System.currentTimeMillis());
#OneToOne(cascade = CascadeType.ALL)
#JoinColumn(name = "id_psg")
private Passenger id_psg=new Passenger();
#OneToOne(cascade = CascadeType.ALL)
#JoinColumn(name = "trip_no" )
private Trip trip_no=new Trip();
//Getters and Setters
//#Override hashCode and equals
#Entity
#Table(name="passenger")
public class Passenger implements Serializable {
#Column(name="name")
private String name;
#NotNull
#Id
#Column(name="id_psg")
#GeneratedValue(strategy = IDENTITY)
private int id_psg;
//Getters and Setters
#Entity
#Table(name="trip")
public class Trip implements Serializable {
#NotNull
#Id
#Column(name="trip_no")
private int trip_no;
#ManyToOne(cascade = CascadeType.MERGE)
#JoinColumn(name = "id_comp")
private Company comp=new Company();
#Column(name="plane")
private String plane;
#Column(name="town_from")
private String town_from;
#Column(name="town_to")
private String town_to;
#Column(name="time_out")
private Timestamp time_out;
#Column(name="time_in")
private Timestamp time_in;
//Getters and Setters
Conroller
#Controller
#RequestMapping("/pass_in_trip/")
public class Aero_Controller_Pass_in_trip {
#Autowired
private Aero_DAO service;
public void setService(Aero_DAO service) {
this.service = service;
}
#RequestMapping(method=RequestMethod.GET)
public String list(Model uiModel) {
List <Pass_in_trip> pass_in_trip=service.findallPass_in_trip();
uiModel.addAttribute("pass_in_trip",pass_in_trip);
return "/pass_in_trip/list";
}
#PreAuthorize("hasRole('ROLE_Admin')")
#RequestMapping(value="delete/{id}",method=RequestMethod.GET)
public String delete(#PathVariable("id")int id, Model uiModel) {
if(service.findByIdPass_in_Trip(id)!=null)
service.delete_Pass_in_trip(id);
return "redirect:/pass_in_trip/";
}
#PreAuthorize("hasRole('ROLE_Admin')")
#RequestMapping(value="update/{id}",method=RequestMethod.GET)
public String updateform(#PathVariable("id")int id, Model uiModel) {
System.out.println("upform");
uiModel.addAttribute("pass_in_trip",service.findByIdPass_in_Trip(id));
System.out.println("upform2");
return "/pass_in_trip/edit";
}
#RequestMapping(value="update/0",method=RequestMethod.GET)
public String newform(Model uiModel) {
System.out.println("Привет!");
return "/pass_in_trip/edit";
}
#PreAuthorize("hasRole('ROLE_Admin')")
#RequestMapping(value="update/{id}",method = RequestMethod.POST)
public String update(Pass_in_trip pass_in_trip,BindingResult bindingResult,Model uiModel,HttpServletRequest httprervletrequest , RedirectAttributes redirectatributes) {
if (bindingResult.hasErrors()) {
uiModel.addAttribute("pass_in_trip", pass_in_trip);
return "pass_in_trip/update";}
service.save(pass_in_trip);
return "redirect:/pass_in_trip/";
}
}
List.jsp
interested in this part:
<s:authorize access="hasRole('ROLE_Admin')">
<td> To change </td>
<td> Delete </td>
</s:authorize>