Basic CRUD operation with composite Id (spring + hibernate) - spring

Question

Im trying to make a basic create operation with hibernate and spring, but i keep getting the message that a id is empty when it is not.So im thinking that it might be because, the entity uses a composite id, fun fact at least for me is that i don't have any problem deleting the entities.
The method im using
#RequestMapping(value="addPatientFamilyRelative",method = RequestMethod.POST)
public #ResponseBody String addPatientFamilyRelative(#RequestParam(value="idPatient")int idPatient,
#RequestParam(value="idRelative")int idRelative,
#RequestParam(value="idRelationship")int idRelationship)
{
Patient_Relative patientRelative = new Patient_Relative();
patientRelative.setIdRelationship(relationshipService.getById(idRelationship));
patientRelative.setPatient(patientService.getById(idPatient));
patientRelative.setRelative(relativeService.getRelative(idRelative));
prService.create(patientRelative);
return "$('#tblPatientFamilyPatientRelatives').ajax.reload();$('#tblPatientRelativesList').ajax.reload()";
}
Patient_Relative class
#Entity
#Table(name="Patient_Relative")
public class Patient_Relative implements Serializable{
/**
*
*/
private static final long serialVersionUID = -2670460334767266076L;
#EmbeddedId
#JoinColumn(name = "idRelative", referencedColumnName = "idRelative", insertable = false, updatable = false)
#ManyToOne(optional = false)
#JsonIgnore
private Relative relative;
#JoinColumn(name = "idRelationship", referencedColumnName = "idRelationship")
#ManyToOne
private Relationship idRelationship;
#JoinColumn(name = "idPatient", referencedColumnName = "idPatient", insertable = false, updatable = false)
#ManyToOne(optional = false)
#JsonIgnore
private Patient patient;
public Relative getRelative() {
return relative;
}
public void setRelative(Relative relative) {
this.relative = relative;
}
public Relationship getIdRelationship() {
return idRelationship;
}
public void setIdRelationship(Relationship idRelationship) {
this.idRelationship = idRelationship;
}
public Patient getPatient() {
return patient;
}
public void setPatient(Patient patient) {
this.patient = patient;
}
}
PatientRelativeId
#Embeddable
public class PatientRelativeId implements java.io.Serializable {
/**
*
*/
private static final long serialVersionUID = 2719758608242901070L;
#Column(name = "idPatient")
private int patientId;
#Column(name = "idRelative")
private int relativeId;
public PatientRelativeId() {
}
public PatientRelativeId(int patientId, int relativeId) {
this.patientId = patientId;
this.relativeId = relativeId;
}
public int getPatientId() {
return patientId;
}
public void setPatientId(int patientId) {
this.patientId = patientId;
}
public int getRelativeId() {
return relativeId;
}
public void setRelativeId(int relativeId) {
this.relativeId = relativeId;
}
}
i hope this is enough to get some ideas, i would have liked to add a column just for the id but i think im not able to do that anymore.
Thanks in advance

Answer 1

I hope this helps someone.
First , my Patient_Relative class was short 1 variable , the one that would store the composite id, so i added the variable PatientRelativeId compositeId.
Second, at the controller method all i had to do was set the values of the composite id , the patient and the relative , and then call the service to create the object.
#RequestMapping(value="addPatientFamilyRelative",method = RequestMethod.POST)
public #ResponseBody String addPatientFamilyRelative(#RequestParam(value="idPatient")int idPatient,
#RequestParam(value="idRelative")int idRelative,
#RequestParam(value="idRelationship")int idRelationship)
{
Patient_Relative patientRelative = new Patient_Relative();
PatientRelativeId id = new PatientRelativeId(idPatient, idRelative);
patientRelative.setPatienRelativeId(id);
patientRelative.setIdRelationship(relationshipService.getById(idRelationship));
patientRelative.setPatient(patientService.getById(idPatient));
patientRelative.setRelative(relativeService.getRelative(idRelative));
prService.create(patientRelative);
return "addRelative";
}