Hibernate – automatically delete children when updating parent

I have two tables. Site have a lot of Sectors.

When I try to edit the list of sectors of a site, for example I have 3 sectors initially, so I delete one sector and I update the site. in the database are three sectors of the Site.

Is it possible that the sectors are automatically deleted when I update a site? or I have to compare one to one?

Thanks.

Site entity

public class Site {

    @Id
    @Column(name = "ID")
    @GeneratedValue(strategy = GenerationType.AUTO)
    private Integer id;

    ....

    @OneToMany(fetch = FetchType.EAGER, mappedBy = "site", cascade = CascadeType.ALL, orphanRemoval = true)    
    private List<Sector> sectores;
}

Sector entity

public class Sector {

    @Id
    @GeneratedValue(strategy = GenerationType.SEQUENCE, generator = "idGenerator")
    @SequenceGenerator(name="idGenerator", sequenceName="SECTOR_SEQ")
    @Column(name = "IDSECT")
    private Integer id;

    @Column(name = "NOMBRE")
    private String nombre;

    @ManyToOne
    @JoinColumn(name = "IDSITE")
    private Site site;
}

log

08:17:55,096 INFO  [stdout] (http--0.0.0.0-8080-2) Hibernate: update SITE set SITIO_CODIGO=?, SITIO_NOMBRE=? where ID=?

08:17:55,116 INFO  [stdout] (http--0.0.0.0-8080-2) Hibernate: update SECTOR set NOMBRE=?, IDSITIO=? where IDSECT=?

Answer

I don’t know if you got it yet, but maybe the @GeneratedValue is a problem for it is different from the Sites’ @GeneratedValue

but if that is not the case then maybe change

@OneToMany(fetch = FetchType.EAGER, mappedBy = "site", cascade = CascadeType.ALL

To

@OneToMany(cascade= {CascadeType.ALL }, mappedBy="mcrPosTran")
@LazyCollection(LazyCollectionOption.FALSE)

And change in the sector

@ManyToOne
@JoinColumn(name = "IDSITE")
private Site site;

To

@ManyToOne(fetch=FetchType.LAZY)
@JoinColumn(name = "IDSITE")
private Site site;