Syntax to define a NHibernate Filter with Fluent Nhibernate?

Question

It seems I can't find the correct syntax to define a nhibernate filter using fluent Nhibernate.

I'm trying to follow this ayende's blogpost:

http://ayende.com/Blog/archive/2006/12/26/LocalizingNHibernateContextualParameters.aspx

I defined the formula on my property with .FormulaIs() method but can't find on google how to translate this definition to fluent nhibernate:

 < filter-def name='CultureFilter'>    < filter-param name='CultureId' type='System.Int32'/>  < /filter-def>  

Answer 1

If you build Fluent from source, there is now support for filters. You use them like this:

First create a class inheriting from FluentNHibernate.Mapping.FilterDefinition:

using FluentNHibernate.Mapping;  namespace PonyApp.FluentFilters {     public class PonyConditionFilter : FilterDefinition     {         public PonyConditionFilter()         {             WithName("PonyConditionFilter")                 .AddParameter("condition",NHibernate.NHibernateUtil.String);         }     } } 

In your ClassMap for your class, use the ApplyFilter method:

namespace PonyApp.Entities.Mappings {     public class PonyMap : ClassMap<Pony>     {         public PonyMap()         {             Id(x => x.Id);             Map(x => x.PonyName);             Map(x => x.PonyColor);             Map(x => x.PonyCondition);             ApplyFilter<PonyConditionFilter>("PonyCondition = :condition");         }     } } 

Then add the filter to your fluent config:

Fluently.Configure()     .Mappings(m => m.FluentMappings.Add(typeof(PonyConditionFilter)))     //blah blah bunches of other important stuff left out     .BuildSessionFactory(); 

Then you can turn it on and off just as you would with vanilla NHibernate:

session.EnableFilter("PonyConditionFilter").SetParameter("condition","Wonderful"); 

Answer 2

In case anyone's still watching this, I've just submitted a patch on Google code for Fluent NHibernate to support filters. You can see it in use in snicker's answer above.