I have a compound primary key formed by the next params :

@Entity
@Table(name = "cita")
@Inheritance(strategy = InheritanceType.JOINED)
@DiscriminatorColumn(name = "CITA_TYPE", discriminatorType = DiscriminatorType.STRING)
@IdClass(CitaID.class)
public class CitaEntity extends EntityObject {

private static final long serialVersionUID = 1L;
@Id
private String idCita;
@ManyToOne
private HistorialEntity historial;
...
/**
* Constructor por defecto sobrecargado con los elementos minimos necesarios
*/

public CitaEntity(CitaID identificador, EstadoCita estado,MedicoEntity medico) {
this.idCita = identificador.getIdCita();
this.estado = estado;
this.medico = medico;
this.historial = new HistorialEntity();

}
...

I have defined citaID this way :


public class CitaID extends EntityObject {

private static final long serialVersionUID = 1L;
private String idCita;
private int historial;

public CitaID() {
idCita = "";
historial = 0;
}

public CitaID(String idCita, int historial) {
this.idCita = idCita;
this.historial = historial;
}

public boolean equals(Object o){
return ((o instanceof CitaID) &&
(idCita.equals(((CitaID)o).getIdCita())) &&
(historial == ((CitaID)o).getHistorial()));
}

public int hashCode(){
return idCita.hashCode()+historial;
}
public String getIdCita() {
return idCita;
}

public int getHistorial() {
return historial;
}
}

and the class "Historial" has the relation ...

@OneToMany(mappedBy="historial")
private List<CitaEntity> listaCitas;

this works in the way that the class "cita" has many "historial", having a compound primary key . My problem appears with the constructor of citaEntity . Do I use the "CitaID" class ( the compound identifier) or I use the attributes ? . Finding an element works fine :

identificador = new CitaID("HOSP150620101504", 27);
cita = em.find(CitaEntity.class, identificador);

but when I try to create a new element cita and persist it, it crashes with this message :

// identificador its the compund primary key
cita = new CitaHospitalariaEntity(identificador,
EstadoCita.pendiente_asignacion, hospital, medico);

...


org.hibernate.PropertyAccessException: could not set a field value by reflection setter of gestor.REH.entidades.CitaID.historial