Comments on: Fluent NHibernate: Auto Mapping Components

By: Charles

Charles — Fri, 17 Jul 2009 08:41:58 +0000

Oops. I see your addendum above….

jagregory says “done”….

By: Charles

Charles — Fri, 17 Jul 2009 08:39:56 +0000

I’ve a need for multiple references to a component “Measurement”. Have you implemented this change you mention here?

BR
Charles

“James Gregory wrote:

@Gabriel: Good question! Currently not possible. I guess I’ll need to amend the convention to pass in the property info too.
Posted 20 Jan 2009 at 10:43 pm ¶ “

By: mike kidder

mike kidder — Wed, 04 Feb 2009 00:33:50 +0000

I recently jumped back into NHibernate (after long hiatus) seeing alot of good chatter in the various blogs regarding Fluent NHibernate. I have also started looking into SharpArchitecture, and your series of posts have been very timely. With the ability to use AutoPersistenceModel and AutoMap together along with Sharp’s code generation templates (tt) is a very powerful combination.

Thanks again for your posts!!

By: James Gregory

James Gregory — Wed, 21 Jan 2009 20:33:43 +0000

You probably need to use autoMap.Component rather than Map for Address, as map just creates a property.

By: Chris Marisic

Chris Marisic — Wed, 21 Jan 2009 20:21:59 +0000

James,

Is there anyway to alter the mapping of the component? Where I’m trying to use my component it’s not a perfect name to name match.

I tried:
.ForTypesThatDeriveFrom(autoMap =>
{
autoMap.Map(p => p.Street, “Address”);
autoMap.Map(p => p.State, “Region”);
})

Where Address is my component but I think that makes AutoMap believe it’s a regular object instead of a component.

By: Reflective Perspective - Chris Alcock » The Morning Brew #269

Reflective Perspective - Chris Alcock » The Morning Brew #269 — Wed, 21 Jan 2009 08:25:16 +0000

[...] Fluent NHibernate: Auto Mapping Components – James Gregory continues his series on the Fluent NHibernate project with a look at automapping for components from database columns in the same table as the entity data to a related object off the entity. [...]

By: James Gregory

James Gregory — Tue, 20 Jan 2009 22:43:15 +0000

@Gabriel: Good question! Currently not possible. I guess I’ll need to amend the convention to pass in the property info too.

By: Dew Drop - January 20, 2009 | Alvin Ashcraft's Morning Dew

Dew Drop - January 20, 2009 | Alvin Ashcraft's Morning Dew — Tue, 20 Jan 2009 14:51:30 +0000

[...] Fluent NHibernate: Auto Mapping Components (James Gregory) [...]

By: Gabriel Schenker

Gabriel Schenker — Tue, 20 Jan 2009 07:06:31 +0000

how do you deal with the situation where you have e.g. two addresses for the Person entity: a home address and a work address? How can you prefix the field names with e.g. the property name (that is “HomeAddressStreet” and “WorkAddressStreet”)?

By: James Gregory

James Gregory — Mon, 19 Jan 2009 18:48:58 +0000

@Wookie: In that case, Auto Mapping may not be well suited. However, you could use a combination of Auto Mapping and standard mappings if all your new work is consistent.

Auto Mapping is well suited to greenfield applications, but not impossible to use against brownfield apps, depending on what state they’re in; if there’s some kind of consistency, there’s a chance you can auto map it.

It’s definitely a case of right tool for the right job though, so if your application is in a state that doesn’t lend itself to auto mapping, by all means don’t use it.

If you ever have any questions, drop us a line on the mailing list.

http://groups.google.com/group/fluent-nhibernate