在简单的单向OneToOne映射中初始化依赖对象

@Entity
public class Account extends UUIDBase {
    private Profile profile;

    @OneToOne(cascade = CascadeType.ALL, optional = false)
    public Profile getProfile() {
        return profile;
    }

    public void setProfile(Profile profile) {
        this.profile = profile;
    }
}

@Entity
public class Profile extends UUIDBase {
   ...
}