Have you looked at Rhino.Security? From the top of the head it have support
for field-level security...
https://github.com/ayende/rhino-security

Valeriu

On Tue, Jul 24, 2012 at 6:28 AM, SirSirAaron <[email protected]>wrote:

> As the subject suggests, has anyone tried implementing field level
> security with NHibernate? If so, I would love to see a code example -- I'm
> not interested in the security authorization mechanism persay but I'm
> rather curious regarding NHibernate's integration with it. I would like to
> have the security checks ran when the entity is hydrated rather than in the
> ui layer as I've seen in other examples. My newbie approach is listed
> below. Does anyone else have a better solution (a custom proxy might be
> cleaner)?
>
> //assume ISecurityTasks has a concrete implementation
> public interface ISecurityTasks
> {
> bool IsViewableByCurrentUser(SecureEntity secureEntity);
> }
>
> public class Entity
> {
> public virtual int Id { get; set; }
> }
>
> public class SecureEntity : Entity
> {
> public virtual bool IsViewableByCurrentUser { get; set; }
> }
>
> public class Document : SecureEntity
> {
> public virtual string Title { get; set; }
> }
>
> public class Company : SecureEntity
> {
> protected virtual Document _secrectCompanyDocument { get; private set; }
> public virtual Document SecretCompanyDocument
> {
>                 //if the current user doesn't have view permission then
> return null
> get { return _secrectCompanyDocument.IsViewableByCurrentUser ?
> _secrectCompanyDocument : null; }
> }
> }
>
> public class SecureEntityPostLoad : IPostLoadEventListener
> {
> public void OnPostLoad(PostLoadEvent postLoadEvent)
> {
> SecureEntity secureEntity = postLoadEvent.Entity as SecureEntity;
> if (secureEntity != null)
> {
> //replace with a call to
> ISecurityTasks.IsViewableByCurrentUser(secureEntity);
> secureEntity.IsViewableByCurrentUser = true;
> }
> }
> }
>
> class Program
> {
> static void Main(string[] args)
> {
> ISessionFactory sessionFactory =
> NHibernateInitializer.Initialize().BuildSessionFactory();
> using (ISession session = sessionFactory.OpenSession())
> using (ITransaction transaction = session.BeginTransaction())
> {
> var company = session.Get<Company>(1);
> var title = company.SecretCompanyDocument.Title;
> }
> }
> }
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