Hi Folks,

I am wondering if there is any tool for generating mapping xml file using database and bussiness entities. If there is any then plse plse do let me know.

-Thanks
Deepak

MyGeneration works just fine for me. There are several templates available for NHibernate. I use "NHibernate Object Mapping 1.1", it creates the classes and the xml mapping file for you. You can specify a data source, the tables to process and the namespace to put the created classes into. After executing the template instance, just copy the files to your project directory and append them to your project.

As these generators are not too intelligent, you sometimes have to adjust a few mapping details, e.g. if the generator was not able to determine the id column.

Hi d.trilsbeek,

Mygeneration is installed on my machine. I know how to generate classes using it. But I dont know how to generate mapping file frm it. It would be great if you can provide me steps to generate mapping files.

Thanks a lot,
Deepak

First thing you need is a NHibernate Template. Open the template browser within MyGeneration, then open the "Online Template Library" (third icon from the left on the template browser toolbar). From there you can choose from a list of templates. After installing the chosen template (as i said, i use "NHibernate Object Mapping 1.1 [gekannt]", you have to create a new template instance, choose the installed NHibernate template and click on "Record Template Input". After adjusting the details just execute the project and both the classes and the mapping files are created in the directory you selected.

You could also check out ObjectMapper (http://www.puzzleframework.com/wikiengi ... aspx?ID=90)
, I'm not sure how much it gets maintained but it has a (albeit undocumented) plugin framework which I recently used to generate usable class names from my existing database structure.

Thanks to All.
My problem get soved using d.trilsbeek post.

d.trilsbeek,

does nHibernate community provide mapping tool like Mygeneration?
If yes then please do let me know.

-Thanks

Does nHibernate provide tool to generate Data Access Layer(LLBLgen tool has DAL generation facility)?

-Thanks

I started out using code gen tools like MyGeneration but when I started using ReSharper I was able to just create templates that were even faster. My domain doesn't mirror my tables, tho, so that made using Code Gen tools pretty useless to me...I had to edit them so much.

Hi mnichols,

I am going through the Mygeneration tool. It provides facility to generate business entities. If you have gone thru the LLBLgen tool, it does provide facility to create a c# .Net 2.0 project with layered architecture. Now my quesion is is there any way to create such layered application using nHibernate tool?

-Thanks

Hi,
There is a free package called Codus at http://www.adapdev.com/codus/ that you may want to look at for this. I played with it very little but it looks like a nice package if you really want your domain to go that direction.
One reason I believe you won't see an abundance of resources such as these for NHibernate is because the folks who usually are interested in using metadata OR/M solutions are not thinking of their domain as an object representation of a relational database.
This generates alot of heat in debates and I am not saying which is better or that one solution is right for all projects, but to think of domain objects as mere data carriers with little or none behavior should be a conscious decision of what you want your domain to look like.

Just my $.02.
MIKE

you can use MyGeneration to generate a layered application too. You have just to create your own templates. The big advantage of this is, that you can design the templates exactly for your needs. I used MyGeneration for the development of a complex n-tier application with a windows client which uses server logic via .NET Remoting. After making a reference implementation we were able to generate the complete data access and communication layer. Also our forms and business logic was standardized so we could generate skeletons for it. Setting up the process took around a week or two, but we saved tons of time with the generation approach as we had frequently changing requirements in the project.

Regards
Luedi

Hi luedi,

If u ve the sample template then plse send it to me.

-Thanks

hi leudi,

still I am waitin for the sample template if there is any!

-Thanks

sorry for the late reply, but we had the rollout of our latest project this week. Unfortunately i'm not able to send our templates as sample as they are used in an individual project and are intellectual property of our customer by contract. Also i forget to mention that the project didn't use NHibernate as data access layer.

Building up your own templates is not so difficult. You just have to make a reference implementation of your classes and then replace all specific code pieces by the MyGeneration scripts. You can use C#, VB and JavaScript as language for the scripts and you can use the complete .NET-Framework in the scripts if you like. The templates provided with MyGeneration will give a good starting point.

Regards
Klaus