public void AddGrant(Grantee grantee, Permission permission)
{
if (FindGrant(grantee) != null)
{
throw new ArgumentException(string.Format("Grantee {0} exists.", grantee));
}
grants.Add(new Grant(grantee, permission));
}
public void RemoveGrant(Grantee grantee)
{
grants.RemoveAll(g => grantee.Equals(g.Grantee));
}
public Grant FindGrant(Grantee grantee)
{
return(grants.Find(g => grantee.Equals(g.Grantee)));
}
public Grant(Grantee grantee, Permission permission)
{
Grantee = grantee;
Permission = permission;
}
