That works :)
You may also look at mapping those two parts polymorphicly, i.e. map an
IPart to an I_Parts table, then map a Part as a join subclass to IPart, with
it's table of Parts, then map the ReadOnlyPart to a join subclass with IPart
with it's table of ProductionParts.
That would of course mean that the I_Parts table contains an index of both,
but the actual fields that represent the part would exist in two separate
tables which could then have various read-only and read-write attributes
placed upon them.

On Thu, May 21, 2009 at 9:09 AM, Brett Veenstra <[email protected]>wrote:

>
> I think I have it working now...
>
>
>
>        public Part()
>        {
>            WithTable("t_Part");
>
>            Id(i => i.Id).ColumnName("PartID");
>            Map(m => m.Name).ColumnName("Part");
>
>            SetAttribute("where", "PartID IN ( SELECT pp.PartID FROM
> PartProduction pp ) ");
>
>            ReadOnly();
>        }
>
> I couldn't find how to use FNH to specify the "where" element on the
> HBM "class", so I just used the SetAttribute.
>
> Thanks folks!
>
>
>
>
> On May 21, 9:21 am, Stuart Childs <[email protected]> wrote:
> > Well, I had been typing out a response here but then you had to go and
> post
> > a SO question and I'm a rep whore :P
> > Hope it helps, and like Hudson said, we're always happy to help even when
> > the questions are much more NH related.  We just want to make sure you
> get
> > the best help and the NH forum is probably populated with all sorts of
> > mapping experts. :)
> >
> > On Thu, May 21, 2009 at 8:08 AM, Brett Veenstra <[email protected]
> >wrote:
> >
> >
> >
> > > The SQL that I would expect for this Model would be:
> >
> > > SELECT p.*
> > > FROM t_Part p
> > > INNER JOIN t_PartProduction pp ON pp.PartID = p.PartID
> > > WHERE pp.ProductionYear = '?'
> >
> > > Considering Hudson's earlier comment that I should post this to the
> > > NHUsers group, I apologize.  Since I didn't want to just blatantly
> > > cross-post, I setup a StackOverflow question for this:
> >
> > >http://stackoverflow.com/questions/892820/nhibernate-incorrect-thinki.
> ..
> >
> > > Since I'm a n00b to NH and it's been made more approachable through
> > > FNH, I posted here first, sorry guys.
> >
> > > Thanks for any ideas!
> >
> > > On May 20, 6:46 pm, Rei <[email protected]> wrote:
> > > > Could you please explain in more detail what it is that you want to
> > > > do?
> >
> > > > On May 20, 11:03 pm, Brett Veenstra <[email protected]> wrote:
> >
> > > > > I'm trying to produce a read-only view of several of my entities.
> >
> > > > > For example, a "Part" sits in a "Part" table (Read/Write), but a
> > > > > "ProducedPart" is a Part that has rows in a "Production" table
> (Read-
> > > > > Only).  I want to be able to generate a distinct list of
> > > > > "ProducedPart" based on the production data.
> >
> > > > > What I think I need is a way to apply a filter during the Mapping
> > > > > phase that takes other Entities into account.  How would I map
> this?
> >
> > > > > Is this a proper problem for NHibernate to solve?
> >
> > > > > Thanks.
> >
>

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