Is there a possibility to reference another class via value object

Question

How can I make a many-to-one xml mapping from the stayId of RoomOccupancy to the stayId of Stay. Note that StayId is a value object, therefore it does not contain the whole reference to Stay.

 public class RoomOccupancy {
// generated hibernate id
private Long id;
private LocalDate startDate;
private LocalDate endDate;
private StayId stayId;
}


public class Stay {
// generated hibernate id
private Long id;
private StayId stayId;
}

I would be very glad, if someone could help me out.Thank you in Advance!

MxWild · Answer 1 · 2021-11-27T14:08:41.373

1

If I understood you, then you need make it like this:

public class RoomOccupancy {
private Long id;
private LocalDate startDate;
private LocalDate endDate;
@ManyToOne(fetch = FetchType.EAGER, targetEntity = Stay .class)
    @JoinColumn(name = "stayId")
    private Stay stay;
}    

public class Stay {
private Long id;
}

Or if you need as xml, just add next code to your xml file

<many-to-one name = "stay" column = "stayId" class="Stay " not-null="true"/>

edited Nov 27 '21 at 14:08

answered Nov 26 '21 at 08:03

MxWild

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First of all, thank you for your help. Could you please write it down as a xml mapping, because I do not use annotations – Whosayin20 Nov 26 '21 at 12:13
If I thought right, just add to your xml – MxWild Nov 27 '21 at 14:07

Is there a possibility to reference another class via value object

1 Answers1