Hi Jan,
I have something like this working:
public class CreditCardCompanyUserType : CreditCardCompany, IUserType
{
public bool Equals(object x, object y)
{
if (ReferenceEquals(x, y)) return true;
if (x == null || y == null) return false;
return x.Equals(y);
}
public int GetHashCode(object x)
{
return x == null ? typeof(bool).GetHashCode() + 473 :
x.GetHashCode();
}
public object NullSafeGet(IDataReader rs, string[] names, object
owner)
{
var obj = NHibernateUtil.String.NullSafeGet(rs, names[0]);
if (obj == null) return null;
var name = (string)obj;
return
CreditCardCompanyRepository.GetCreditCardCompanyByName(name); ;
}
public void NullSafeSet(IDbCommand cmd, object value, int index)
{
if (value == null)
{
((IDataParameter)cmd.Parameters[index]).Value =
DBNull.Value;
}
else
{
var c = (CreditCardCompany)value;
((IDataParameter) cmd.Parameters[index]).Value = c.Name;
}
}
public object DeepCopy(object value)
{
return value;
}
public object Replace(object original, object target, object owner)
{
return original;
}
public object Assemble(object cached, object owner)
{
return cached;
}
public object Disassemble(object value)
{
return value;
}
public SqlType[] SqlTypes
{
get { return new[] {NHibernateUtil.String.SqlType}; }
}
public Type ReturnedType
{
get { return typeof(CreditCardCompany); }
}
public bool IsMutable
{
get { return false; }
}
}
With this approach, besides the IUserType you will need a static
CreditCardCompanyRepository that aggregates all the credit card companies
available... something like this:
public class CreditCardCompanyRepository
{
private static readonly Dictionary<string, CreditCardCompany>
allCreditCardCompanies = new Dictionary<string, CreditCardCompany>();
static CreditCardCompanyRepository ()
{
// use reflection to initialize allCreditCardCompanies
}
....
public static ClaseComprobante GetCreditCardCompanyByName(string
name)
{
return allClases[name];
}
}
(Some of my requirements justify this static repository, but you should be
fine if you decide not to use it)
Regards,
Germán.
On Thu, Nov 20, 2008 at 8:21 PM, Jan Limpens <[EMAIL PROTECTED]> wrote:
> Unable to cast object of type 'System.Runtime.Remoting.ObjectHandle'
> to type 'xxx.CreditCardCompany'.
>
> seems I've got more work ahead :)
>
>
> On Thu, Nov 20, 2008 at 8:43 PM, Tuna Toksöz <[EMAIL PROTECTED]> wrote:
> >
> > public Type ReturnedType
> > {
> > get { return typeof(object); }
> > }
> >
> > this may be a problem, don't know. go ahead and try. This is not
> something i
> > like but would work.
> >
> > On Fri, Nov 21, 2008 at 12:39 AM, Jan Limpens <[EMAIL PROTECTED]>
> wrote:
> >>
> >> public Type ReturnedType
> >> {
> >> get { return typeof(object); }
> >> }
> >
> >
> > --
> > Tuna Toksöz
> > http://www.tunatoksoz.com
> >
> > Typos included to enhance the readers attention!
> >
> >
> > >
> >
>
>
>
> --
> Jan
> ___________________
> [EMAIL PROTECTED]
> www.limpens.com
> +55 (11) 3082-1087
> +55 (11) 3097-8339
>
> >
>
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