Comments on: NHibernate Mapping Examples

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By: Ellrhow

Ellrhow — Sun, 21 Aug 2011 20:26:00 +0000

Did you change the Northwind database? I thought it was OrderDetails, not OrderLines….if so then this is not very helpfull or correct.

By: NHibernate Examples

NHibernate Examples — Sun, 10 Apr 2011 15:36:59 +0000

[...] published some NHibernate examples almost 4 years ago, and they still get downloaded pretty frequently. Unfortunately they still use NHibernate 1.2 and [...]

By: NHibernate 3.x i FluentNHibernate: Płynne mapowanie – Północny wiatr (Northwind) « Kamil Kliczbor @ asptip.net

Mon, 27 Dec 2010 20:17:12 +0000

[...] Celem niniejszego wpisu jest wykonanie mapowania bazy danych Northwind przy użyciu ORM-a jakim jest NHibernate w wersji 3.x. Dodatkowo, zamiast pisać xml-e konfiguracyjne posłużymy się FluentNHibernate. Model domenowy będzie stanowić całkiem niezłe podwaliny pod serię artykułów na temat pisania dedykowanych zapytań, które chcę popełnić w niedalekiej przyszłości. Za zgodą Davy Briona zmieniłem mapowania lekko zmodyfikowanej, myślę że również oklepanej bazy danych Northwind. Oryginalny projekt wraz z objaśnieniami można znaleźć pod adresem http://davybrion.com/blog/2007/07/nhibernate-mapping-examples/. [...]

By: Prashanth

Prashanth — Mon, 13 Sep 2010 01:00:12 +0000

i am working on the simple mapping between product and category,,can i get this same version in fluentnhibernate ? thanks

By: Prashanth

Prashanth — Mon, 13 Sep 2010 00:58:48 +0000

this is really usefull,i think soo many people like me are looking for resources like this…great work and thanks..

By: Diijon

Diijon — Thu, 05 Aug 2010 15:58:54 +0000

I’d like to see you implement this model using strictly stored procedures.

By: Socrates Ponnusamy

Socrates Ponnusamy — Wed, 16 Jun 2010 15:22:02 +0000

this is a nice one. Thanks. Can you please tell me how would you do it if we have two more columns added to EmployeTerritories (Status and UpdatedDateTime)? I could not find any help on this. Thanks in advance

By: Sougandh

Sougandh — Fri, 16 Apr 2010 12:46:45 +0000

Thats a nice one. Thanks for posting them.

Regards,
Sougandh Pavithran

By: Salman

Salman — Wed, 16 Dec 2009 19:18:06 +0000

ah ok, you only have the Territory entity that is able to add/remove employees, so its not bidirectional in that manner

By: Salman

Salman — Wed, 16 Dec 2009 19:16:52 +0000

Davy,

In your example, you have a many-to-many relationship for territories and employees.
You used a Set in the Territory mapping file, and a bag in the employee mapping file.

Don’t you need to set one of them with the inverse=true attribute? To tell nhibernate which entity collection to use when their is a change?

By: Davy Brion

Davy Brion — Wed, 02 Dec 2009 07:30:39 +0000

@Salman

nope, i don’t really believe in them

By: Salman

Salman — Tue, 01 Dec 2009 18:37:00 +0000

Great example!

Curious, did you use any tools for generating your mappings?

By: Ibrahim

Ibrahim — Wed, 14 Oct 2009 17:56:19 +0000

Hi..

I am new to NHIbernate.
Can anybody tellme how to do mapping / solve the current situation..

Product Table Category Table

productid categoryId
productname category
productdescription
category{string type}

Current Window: Product.Xaml [iam binding product entity to this form/window]

and my requirement is while accessing product entity from product table i need to access all categories from category table.So that it will be binded to a dropdownlist. is it possible? or i need to bind categories programmatically after loaded product entity ?

By: RichB

RichB — Tue, 31 Mar 2009 15:41:20 +0000

Beautiful.
My only complaint is that it could have done with some complex HQL examples.

“from Employees e where e.Orders.OrderLines.Discount > 5″

…and I know that won’t compile, because that demonstrates what I’m stuck trying to do. I was hoping your fantastic Northwind solution which give me the answer.

By: The Inquisitive Coder - Davy Brion’s Blog » Blog Archive » What Would You Like To See In My Upcoming NHibernate Examples?

Sun, 22 Mar 2009 15:35:58 +0000

[...] original version of my NHibernate Mapping Examples was pretty popular, but they were based on NHibernate 1.2 and only showed some of the basics. I [...]

By: Albert Araalie

Albert Araalie — Sat, 10 Jan 2009 10:01:51 +0000

I’ve used the samples successfully! Thanks alot! How would I map a view that queries the Employees’ table, through to the Products’ table? An initial complaint from nhibernate is that it cannot find an id field.

By: Jamie

Jamie — Mon, 27 Oct 2008 17:25:28 +0000

Well.. that didn’t work… (no xml posting… duhh). (why is there no preview?)
Without the xml, it’s:

class name=”Table1Class” table=”Table1″
set name=”Table3s” cascade=”save-update” table=”Table3″
key column=”Table1ID”
composite-element class=”Table3Class”
property name=”SortOrder”
many-to-one name=”Table2Class” column=”Table2ID”
/composite-element
/set
/class

By: Jamie

Jamie — Mon, 27 Oct 2008 17:22:39 +0000

JBurrow, probably too late of an answer, but I had to tackle the same thing (a many-to-many with an additional value). You just need to define the association table in one of the containing classes. For your example:

By: Davy Brion

Davy Brion — Sat, 06 Sep 2008 09:24:32 +0000

I don’t think you can do that… A true many-to-many only has two keys… once another column is added, it’s considered an own entity in its own right. In this case it might seem a bit drastic because of the column only contains a SortOrder, but i’m affraid you won’t be able to use a many-to-many association for that

I can be wrong though