I’m polling mulitple systems (domains) for security info so I’m dealing domainUsers and their roles. I’ve got my entities setup as show below, but I’m having trouble setting up the domainUser.HasMany relationship in the AutoMapper override.
You’ll notice that I don’t have domainUser.DomainUserId and role.RoleId which make this much more simple (no compositeIds.) I’ve avoided those fields because I’ve already got a natural composite key and it will be populate when I pull this data from the downstream domain. If I add those artificial keys, I’ll have to pre-fetch their values before I call session.Merge(domainUser). I’m trying to avoid doing that.
The entity objects are obvious (I hope) but here is what I’ve got.
public class DomainUser
{
public virtual int Domain_Id { get; set; }
public virtual string DomainUserLogin { get; set; }
public virtual string EmployeeId { get; set; }
// extra field removed for breviety
public DomainUser()
{
this.Roles = new List<DomainUserRole>();
}
public virtual void AddRole(DomainUserRole role)
{
role.DomainUser = this;
this.Roles.Add(role);
}
// overrides for equals and getHashCode
}
and
public class DomainUserRole
{
public virtual DomainUser DomainUser { get; set; }
public virtual string DataSegment { get; set; } // Some group of data a user has access to, like US or China
public virtual string RoleName { get; set; }
public virtual string RoleDescription { get; set; }
// extra field removed for breviety
// overrides for equals and getHashCode
}
My db schema is pretty simple.
alt text http://lh6.ggpht.com/_MV6QGBD11JE/S3iX2qcP_jI/AAAAAAAAEE0/PGIO07BlCSo/s800/Untitled.gif.jpg
I’ve got the IAutoMappingOverride classes started like this. But, I’m at a loss of how to setup the hasMany for roles. It keeps giving me
NHibernate.FKUnmatchingColumnsException:
Foreign key (FK20531BE4163641BB:tblDomainUserRoles [DomainUser]))
must have same number of columns as the referenced primary key
(tblDomainUsers [Domain_Id, DomainUserLogin]).
How do I setup that foreign key to use both those fields?
public class DomainUserMap : IAutoMappingOverride<DomainUser>
{
public void Override(AutoMapping<DomainUser> mapping)
{
mapping.CompositeId()
.KeyProperty(user => user.Domain_Id, "Domain_Id")
.KeyProperty(user => user.DomainUserLogin, "DomainUserLogin");
// I"ve tried this.
// mapping.HasMany(x => x.Roles)
// .KeyColumns.Add("Domain_Id")
// .KeyColumns.Add("DomainUserLogin");
// also tried this where I define this FK in DB with both fields.
// mapping.HasMany(x => x.Roles)
// .ForeignKeyConstraintName("FK_tblDomainUserRoles_tblDomainUsers")
}
}
public class DomainUserRoleMap : IAutoMappingOverride<DomainUserRole>
{
public void Override(AutoMapping<DomainUserRole> mapping)
{
mapping.CompositeId()
.KeyReference(role => role.DomainUser)
.KeyProperty(role => role.DataSegment)
.KeyProperty(role => role.RoleName);
}
}
I did endup hand editing the hbm files. It looks like the most recent build on fluent Nhibernate addresses this issue. Here is what my hbm file look like.
here is the file for roles.