Playframework Ebean删除对象不刷新Realationship

下面的问题让我感到困惑。我想从关系中删除一个度量值，引用的对象应该更新度量值。所以我的问题是，如果我删除一个度量值，效果很好，但是如果我从cure对象获得所有度量值，我看到delete对象在里面。更新关系的最佳方式是什么

Measurement.java

@Entity
@Table(name = "measurements")
public class Measurement extends Model {

    @Id
    public Long id;

    @Formats.DateTime(pattern = "dd.MM.yyyy")
    public Date created = new Date();

    @Constraints.Required
    public double weight;

    @Constraints.Required
    public double belly;

    @Constraints.Required
    public double thigh;

    @Constraints.Required
    public double gluteal;

    @ManyToOne
    @JsonBackReference
    public Cure cure;
}

Cure.java

@Entity
@Table(name = "cures")
public class Cure extends Model  implements Comparable<Cure> {

    @Id
    public Long id;

    @Formats.DateTime(pattern = "dd.MM.yyyy")
    public Date created = new Date();

    public int startHour = 10;

    @ManyToOne
    @JsonIgnore
    public Challenge challenge;

    @JsonManagedReference
    @OneToMany
    public List<Measurement> measurements;
}

---

我在你的模特课上没看到finder。执行以下步骤

public static Finder<Long, Measurement> find = new Finder<Long, Measurement>(Long.class, Measurement.class);

public static Finder<Long, Measurement> find = new Finder<Long, Measurement>(Long.class, Measurement.class);

SqlUpdate deletObject = Ebean
                        .createSqlUpdate("delete from table_name where id = "
                                + id); 
deletObject.execute();