First off as always thanks to NHibernate and the many active people who help support it. I am very new to NHibernate and have a simple mapping question that I hope you can help with.

Quick use case. I want to create invitations that contain one of the many possible invitation details. Essentially the invitation detail is configurable this I had to split it into two tables.

Very simple set up. Mind you this is Pseudo code.

class Invitation
{
Guid mId;
InvitationDetail mInvitationDetail;
}

class InvitationDetail
{
Guid mId;
string mSubject;
string mInvitationText;
}

//Sample Program

InvitationDetail detail = InvitationDetail.Create(selectedDetailId);
Invitation invite = new Invitation(detail);
invite.Invite();

So InvitationDetail is composed in my Invitation class. Thus Invitation has-a InvitationDetail. The data model is two tables. Invitation has the id of the specified invitationdetail to that was selected for use.


Tbl_Invitation
PK UID Id
UID InvitationDetailId

Tbl_Invitation_Detail
PK UID Id
VARCHAR Subject
VARCHAR InvitationText

My question is what mapping should I use. I do not think one-to-one is what I am looking at here as there key is not shared. Many-to-One seems a bit wrong as well. Is this just a simple component?

BDN

It sounds as though it should be a one to many, where invitation detail is the one, and invitation is the many? If I'm reading it right, invitation detail is some sort of template that multiple invitations will use?

Kev

Thanks for the reply. I suppose your assertion is correct. Let me give it a try using that line of thinking.

Thanks,
BDN