I've heard nothing from NHUSERS group on how to resolve this.  I'd be
interested in hearing your workaround of mapping PolicyNumber twice.
It sounds ugly, but perhaps the only option.  I can't quite figure out
how to do this though?

On Jan 26, 10:38 am, Corey Coogan <coreycoo...@yahoo.com> wrote:
> Thanks Hudson.  I actually posed the question to NHUsers right after
> my last reply here.  When I find something out, I'll share here.  The
> DB can't be changed.  It's legacy and has an entire insurance company
> running expecting that primary key.  The brass here won't even
> consider it.  Thanks for asking though.  I am a huge anti-fan of
> composite keys as well.
>
> Corey
>
> On Jan 26, 9:09 am, Hudson Akridge <hudson.akri...@gmail.com> wrote:
>
> > It's no different. Your problem isn't a FNH problem, it's an NH problem.
> > Also, you may be able to head over to the nhusers
> > <http://groups.google.com/group/nhusers>google group and ask your question
> > there, they have more experience solving strange edge case scenario's. If
> > they can figure it out and get you the xml for it, then we can figure out
> > the FNH versions of those xml elements.
>
> > The only workaround I can think of involves mapping the PolicyNumber column
> > twice on the parent table, which is an awful workaround imo (But that would
> > allow you to map PolicyNumber as the second property). Is there any way we
> > can change the DB schema to move away from CompositeId's (Probably not, but
> > figured I'd ask)?
>
> > On Tue, Jan 26, 2010 at 8:46 AM, Corey Coogan <coreycoo...@yahoo.com> wrote:
> > > Thanks for the help here Hudson.  I appreciate your continued support.
>
> > > How would this be possible from an XML mapping strategy?
>
> > > On Jan 25, 4:28 pm, Hudson Akridge <hudson.akri...@gmail.com> wrote:
> > > > Can't have two properties mapped to the same field in NHibernate. That's
> > > the
> > > > index out of range exception. It's expecting there to be n columns, but
> > > > there's really n-1 columns (for the repeat).
>
> > > > I'm in the middle of a bunch of non-FNH related stuff atm (also known as
> > > day
> > > > job), but let me think on this and see what we can do about getting
> > > around
> > > > this. We should be very close to resolving the issue. I was hoping the
> > > none
> > > > modifier for access would prevent NHibernate from attempting to include
> > > the
> > > > column in the query a second time. Guess not. More thoughts later.
>
> > > > On Mon, Jan 25, 2010 at 3:50 PM, Corey Coogan <coreycoo...@yahoo.com>
> > > wrote:
> > > > > This is almost working.  At least I can build the sessionfactory now.
> > > > > My tests against SqlLite are failing though. Thanks for all your help.
>
> > > > > Details below:
>
> > > > > --------------------------
> > > > > Relevant Mapping
> > > > > --------------------------
> > > > >  mapping.Map(x => x.PolicyNumberMapping, "POLICY_NUMBER").Access.None
> > > > > ();
>
> > > > >            mapping.HasMany(x => x.CreditCards)
> > > > >                .KeyColumn("POL_NBR")
> > > > >                .PropertyRef("PolicyNumberMapping");
>
> > > > > - <composite-id mapped="false" unsaved-value="undefined">
> > > > > - <key-property name="PolicyNumber" type="System.String, mscorlib,
> > > > > Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089">
> > > > >  <column name="`POLICY_NUMBER`" />
> > > > >  </key-property>
> > > > > - <key-property name="PolicyDateTime" type="System.Nullable`1
> > > > > [[System.DateTime, mscorlib, Version=2.0.0.0, Culture=neutral,
> > > > > PublicKeyToken=b77a5c561934e089]], mscorlib, Version=2.0.0.0,
> > > > > Culture=neutral, PublicKeyToken=b77a5c561934e089">
> > > > >  <column name="`POLICY_DATE_TIME`" />
> > > > >  </key-property>
> > > > >  </composite-id>
> > > > > - <property access="none" name="PolicyNumberMapping"
> > > > > type="System.String, mscorlib, Version=2.0.0.0, Culture=neutral,
> > > > > PublicKeyToken=b77a5c561934e089">
> > > > >  <column name="`POLICY_NUMBER`" />
> > > > >  </property>
>
> > > > > -----------------------
> > > > > ERROR
> > > > > -----------------------
> > > > > Test method
>
> > > NHibernate.Spike.Test.Unit.Mappings.When_policy_is_mapped.Can_map_policy
> > > > > threw exception:  System.ArgumentOutOfRangeException: Index was out of
> > > > > range. Must be non-negative and less than the size of the collection.
> > > > > Parameter name: index.
> > > > > at System.ThrowHelper.ThrowArgumentOutOfRangeException
> > > > > (ExceptionArgument argument, ExceptionResource resource)
> > > > > at System.ThrowHelper.ThrowArgumentOutOfRangeException()
> > > > > at System.Collections.Generic.List`1.get_Item(Int32 index)
> > > > > at System.Data.SQLite.SQLiteParameterCollection.GetParameter(Int32
> > > > > index)
> > > > > at
>
> > > System.Data.Common.DbParameterCollection.System.Collections.IList.get_Item
> > > > > (Int32 index)
> > > > > at NHibernate.Type.DateTimeType.Set(IDbCommand st, Object value, Int32
> > > > > index)
> > > > > at NHibernate.Type.NullableType.NullSafeSet(IDbCommand cmd, Object
> > > > > value, Int32 index)
> > > > > at NHibernate.Type.NullableType.NullSafeSet(IDbCommand st, Object
> > > > > value, Int32 index, ISessionImplementor session)
> > > > > at NHibernate.Type.ComponentType.NullSafeSet(IDbCommand st, Object
> > > > > value, Int32 begin, ISessionImplementor session)
> > > > > at NHibernate.Persister.Entity.AbstractEntityPersister.Dehydrate
> > > > > (Object id, Object[] fields, Object rowId, Boolean[] includeProperty,
> > > > > Boolean[][] includeColumns, Int32 table, IDbCommand statement,
> > > > > ISessionImplementor session, Int32 index)
> > > > > at NHibernate.Persister.Entity.AbstractEntityPersister.Insert(Object
> > > > > id, Object[] fields, Boolean[] notNull, Int32 j, SqlCommandInfo sql,
> > > > > Object obj, ISessionImplementor session)
> > > > > at NHibernate.Persister.Entity.AbstractEntityPersister.Insert(Object
> > > > > id, Object[] fields, Object obj, ISessionImplementor session)
> > > > > at NHibernate.Action.EntityInsertAction.Execute()
> > > > > at NHibernate.Engine.ActionQueue.Execute(IExecutable executable)
> > > > > at NHibernate.Engine.ActionQueue.ExecuteActions(IList list)
> > > > > at NHibernate.Engine.ActionQueue.ExecuteActions()
> > > > > at
>
> > > NHibernate.Event.Default.AbstractFlushingEventListener.PerformExecutions
> > > > > (IEventSource session)
> > > > > at NHibernate.Event.Default.DefaultFlushEventListener.OnFlush
> > > > > (FlushEvent event)
> > > > > at NHibernate.Impl.SessionImpl.Flush()
> > > > > at NHibernate.Transaction.AdoTransaction.Commit()
> > > > > at
>
> > > NHibernate.Spike.Test.Unit.Mappings.When_policy_is_mapped.Can_map_policy
> > > > > () in
>
> > > > > On Jan 21, 4:03 pm, Hudson Akridge <hudson.akri...@gmail.com> wrote:
> > > > > > We are deep in NHibernate magic territory :) If that still doesn't
> > > work
> > > > > for
> > > > > > you, I'll see what I can do about setting up a test environment to
> > > what
> > > > > > you've got and giving it a go. It's an interesting problem, and I'd
> > > like
> > > > > to
> > > > > > know what the final solution will be. My knowledge in this area is
> > > purely
> > > > > > theoretical ;)
>
> > > > > > On Thu, Jan 21, 2010 at 4:00 PM, Corey Coogan <coreycoo...@yahoo.com
>
> > > > > wrote:
> > > > > > > I'll give that a try tomorrow.
>
> > > > > > > Thanks,
> > > > > > > Corey
>
> > > > > > > On Jan 21, 2:45 pm, Hudson Akridge <hudson.akri...@gmail.com>
> > > wrote:
> > > > > > > > Ah, that might make sense actually. Because you technically 
> > > > > > > > don't
> > > > > have
> > > > > > > > PolicyNumber mapped as a property, it's part of your composite
> > > key.
> > > > > Try
> > > > > > > > something like this:
> > > > > > > > Map(x=> PolicyNumberForNH, "PolicyNumber").Access.None();
>
> > > > > > > > Then change your property-ref to PolicyNumberForNH and see if
> > > > > NHibernate
> > > > > > > > gets the clue then. I believe it actually needs a <property> to
> > > map a
> > > > > > > > property-ref to, and not just a POCO property.
>
> > > > > > > > On Thu, Jan 21, 2010 at 2:26 PM, Corey Coogan <
> > > coreycoo...@yahoo.com
>
> > > > > > > wrote:
> > > > > > > > > I spoke too soon.  My claim that it worked was a case of
> > > mistaken
> > > > > > > > > identity on a test that was being run but recently changed.
>
> > > > > > > > > Here's what this syntax is producing in an HBM.
>
> > > > > > > > > - <bag cascade="save-update" name="CreditCards" 
> > > > > > > > > mutable="true">
> > > > > > > > > - <key property-ref="PolicyNumber">
> > > > > > > > >  <column name="`PolNbr`" />
> > > > > > > > >  </key>
> > > > > > > > >  <one-to-many class="Aah.Policy.InfoLayer.CrdtCardAcctRecord,
> > > > > > > > > NHibernate.Spike.Data, Version=1.0.0.0, Culture=neutral,
> > > > > > > > > PublicKeyToken=null" />
> > > > > > > > >  </bag>
>
> > > > > > > > > I don't think that is right?  I get an error during
> > > configuration
> > > > > from
> > > > > > > > > NH that it can't find property PolicyNumber on my Policy 
> > > > > > > > > object
> > > > > > > > > (Parent class to CreditCards).  That message is very 
> > > > > > > > > misleading
> > > and
> > > > > > > > > led to hours of chasing the wrong stuff.
>
> > > > > > > > > On Jan 20, 11:41 am, Hudson Akridge <hudson.akri...@gmail.com>
> > > > > wrote:
> > > > > > > > > > Awesome, glad to be of assistance :)
>
> > > > > > > > > > On Wed, Jan 20, 2010 at 11:40 AM, Corey Coogan <
> > > > > > > coreycoo...@yahoo.com
> > > > > > > > > >wrote:
>
> > > > > > > > > > > This worked like a charm and is exactly what I needed.
>
> > > > > > > > > > > Thanks again!
>
> > > > > > > > > > > On Jan 20, 9:34 am, Hudson Akridge <
> > > hudson.akri...@gmail.com>
> > > > > > > wrote:
> > > > > > > > > > > > Understood. Ok, well, let's see if this works:
> > > > > > > > > > > > HasMany(x=>
>
> > > > > x.CreditCards).AsBag().KeyColumn("PolNbr").PropertyRef("PolicyNumber");
>
> > > > > > > > > > > > The PropertyRef should allow you to map to a non-key
> > > column
> > > > > in
> > > > > > > the
> > > > > > > > > parent
> > > > > > > > > > > > table. On the References() side it allows you to map to 
> > > > > > > > > > > > a
> > > non
> > > > > key
> > > > > > > > > > > property
> > > > > > > > > > > > in the related table. PropertyRef is for mapping lagacy
> > > data
> > > > > > > > > > > specifically.
>
> > > > > > > > > > > > If that doesn't work, do a quick ExportTo() in your
> > > config
> > > > > and
> > > > > > > paste
> > > > > > > > > the
> > > > > > > > > > > > hbm.xml mappings if you could, so I can make sure FNH is
> > > > > writing
> > > > > > > the
> > > > > > > > > > > correct
> > > > > > > > > > > > XML.
>
> ...
>
> read more »

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