Thing is how big do you make your "string" column in your DB to cater
for all the lengths of the enums.
The automapper is going to default to X but then some developer
comes along and adds "thisisareallylingenumvalue" and all of the
sudden
that's going break on the inside of the DB and make the enum cast as
the
default instead of the really long one. That is bad.
If I use Ints in my DB not only am I safe from magic strings but I get
better indexing and reporting performance (yes I understand it's
marginal)
unfortunately that's how I grew up DB wise and my preferred solution.
I realise that's more of a basic Nhibernate functionality question
rather than a FNH one, thanks for the swift response though.
In your opinion am I better overloading ToString for my enum types to
return the Int value or creating an "AddTypeConvention" to handle it
there?
Thanks, Mark
On Feb 18, 1:33 pm, James Gregory <jagregory....@gmail.com> wrote:
> CustomTypeIs is for specifying IUserTypes, so no that wouldn't work.
> Although perhaps I should remove that limitation and make CustomTypeIs just
> be for any type.
>
> On Wed, Feb 18, 2009 at 1:27 PM, blindwillie <asgerhal...@gmail.com> wrote:
>
> > Shouldn't it be possible to do it like this:
>
> > Map(x => x.MyEnum).CustomTypeIs(typeof(int));
>
> > Because such line seems to be ignored right now. I don't know if
> > removing the "highlighted" line in the automapper will change that?
>
> > /Asger
>
> > On Feb 18, 2:23 pm, James Gregory <jagregory....@gmail.com> wrote:
> > > Well, that line you highlighted in AutoMapper doesn't make any sense.
> > > Removing it allows the automapper to map Enums; however, the recommended
> > > behavior in NHibernate is to map enums as strings, and that's what the
> > > automapper does.
> > > If you really must use enums as ints, then you'll need to manually set
> > the
> > > type attribute on the property. I've updated the enum convention to
> > ignore
> > > any enum properties that already have their type set.
>
> > > Map(x => x.MyEnum)
> > > .SetAttribute("type", "Int32");
>
> > > On Wed, Feb 18, 2009 at 9:17 AM, Mark Perry <markperr...@googlemail.com
> > >wrote:
>
> > > > James
>
> > > > Have you had any ideas on this one yet?
>
> > > > Mark
>
> > > > On Feb 13, 3:07 pm, Mark Perry <markperr...@googlemail.com> wrote:
> > > > > James
>
> > > > > Is there anything I can do to help you out further?
>
> > > > > Mark
>
> > > > > On Feb 12, 5:51 pm, James Gregory <jagregory....@gmail.com> wrote:
>
> > > > > > I'm not sure why those checks are in there, but I'll investigate
> > when I
> > > > next
> > > > > > get an opportunity.
>
> > > > > > On Thu, Feb 12, 2009 at 4:01 PM, Mark Perry <
> > > > markperr...@googlemail.com>wrote:
>
> > > > > > > Here as well in AutoMapComponent.cs
>
> > > > > > > Line 35
>
> > > > > > > if (property.PropertyType.IsEnum || property.GetIndexParameters
> > > > > > > ().Length != 0) continue;
>
> > > > > > > After taking both of the checks for
> > "property.PropertyType.IsEnum"
> > > > > > > from the source code and
> > > > > > > running the auto mapper I get the XML outputting correctly.
>
> > > > > > > <property name="DisplayAs" column="DisplayAs"
> > > > > > > type="FluentNHibernate.Mapping.GenericEnumMapper`1
> > > > > > > [[Engineering.Domain.DisplayAs, Engineering.Domain,
> > Version=1.0.0.0,
> > > > > > > Culture=neutral, PublicKeyToken=null]], FluentNHibernate,
> > > > > > > Version=0.1.0.0, Culture=neutral,
> > PublicKeyToken=8aa435e3cb308880">
> > > > > > > <column name="DisplayAs" sql-type="string" />
> > > > > > > </property>
>
> > > > > > > I guess internally it's using the EnumerationTypeConvention() to
> > do
> > > > > > > the business. Unfortunately I cannot get the automapper to break
> > into
> > > > > > > my ITypeConvention for my Enum.
>
> > > > > > > Also the default is to store as a string in the DB and not an Int
> > > > > > > which it what I would like.
>
> > > > > > > Dunno if any of this helps at all.
>
> > > > > > > Thanks, Mark
>
> > > > > > > On Feb 12, 3:19 pm, Mark Perry <markperr...@googlemail.com>
> > wrote:
> > > > > > > > Seems like the AutoMapper will always ignore Enums from the
> > > > generated
> > > > > > > > maps:
>
> > > > > > > > AutoMapper.cs line 57
>
> > > > > > > > if (!property.PropertyType.IsEnum &&
> > property.GetIndexParameters
> > > > > > > > ().Length == 0)
>
> > > > > > > > Am I right here or should I be doing something else?
>
> > > > > > > > Mark
>
> > > > > > > > On Feb 12, 3:02 pm, Mark Perry <markperr...@googlemail.com>
> > wrote:
>
> > > > > > > > > @Steve
>
> > > > > > > > > Yeah I get the state thing but all I want is a simple Enum to
> > DB
> > > > int
> > > > > > > > > mechanism.
> > > > > > > > > From my previous post I don't think this is currently working
> > in
> > > > the
> > > > > > > > > AutoMapper.
>
> > > > > > > > > Thanks, Mark
>
> > > > > > > > > On Feb 12, 2:50 pm, Steven Harman <stevehar...@gmail.com>
> > wrote:
>
> > > > > > > > > > Mark,
> > > > > > > > > > I like Derick Bailey's approach to solving this - Mapping a
> > > > State
> > > > > > > Pattern
> > > > > > > > > > with NHibernate:
>
> > > >http://www.lostechies.com/blogs/derickbailey/archive/2008/11/26/mappi.
> > ..
>
> > > > > > > > > > -steve
>
> > > > > > > > > > //---- 90% of being smart is knowing what you're dumb at
> > > > ----//
> > > > > > >http://stevenharman.net/
>
> > > > > > > > > > On Thu, Feb 12, 2009 at 9:12 AM, Mark Perry <
> > > > > > > markperr...@googlemail.com>wrote:
>
> > > > > > > > > > > Hi
>
> > > > > > > > > > > Sorry to keep pestering the list like this I feel like
> > I'm
> > > > being a
> > > > > > > > > > > right pain in the [insert word here].
>
> > > > > > > > > > > I wanted to have to AutoMapper map one of my properties
> > which
> > > > is an
> > > > > > > > > > > Enum but it seems as
> > > > > > > > > > > if the AutoMapper just ignores it.
>
> > > > > > > > > > > I know there is an example on the wiki
>
> > > >http://wiki.fluentnhibernate.org/show/AutoMappingTypeConventions
> > > > > > > > > > > but I just want to store my enum as an Int in the Db and
> > have
> > > > it as
> > > > > > > an
> > > > > > > > > > > enum in my object and not go to the
> > > > > > > > > > > length of implementing IUserType.
>
> > > > > > > > > > > I think I need to add an ITypeConvention to handle my
> > > > EnumType and
> > > > > > > add
> > > > > > > > > > > a custom attribute to describe
> > > > > > > > > > > the type of my enum?
>
> > > > > > > > > > > Am I along the right lines here?
>
> > > > > > > > > > > Thanks, Mark
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