2
我正在轮询安全信息的多个系统（域），所以我正在处理domainUsers及其角色。我有我的实体设置如下所示，但我无法在AutoMapper覆盖中设置domainUser.HasMany关系。如何覆盖复合标识的自动映射，与流畅的nhibernate一对多关系？
你会注意到我没有domainUser.DomainUserId和role.RoleId这使得这更简单（没有compositeIds。）我已经避免了这些字段，因为我已经有了一个自然的组合键，它当我从下游域中获取这些数据时将会填充。如果我添加这些人造键，那么在调用session.Merge（domainUser）之前，我必须预先获取它们的值。我试图避免这样做。
实体对象是显而易见的（我希望），但这里是我得到的。
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
}
和
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
}
我的数据库架构是非常简单的。
alt text http://lh6.ggpht.com/_MV6QGBD11JE/S3iX2qcP_jI/AAAAAAAAEE0/PGIO07BlCSo/s800/Untitled.gif.jpg
我已经得到了IAutoMappingOverride类开始是这样的。但是，我不知道如何为角色设置hasMany。它一直给我
NHibernate.FKUnmatchingColumnsException:
Foreign key (FK20531BE4163641BB:tblDomainUserRoles [DomainUser]))
must have same number of columns as the referenced primary key
(tblDomainUsers [Domain_Id, DomainUserLogin]).
如何设置外键使用这两个字段？
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);
}
}