I'm looking for a decent codebase that demonstrates how to use nHibernate as the persistance layer in an asp.net mvc3 project.
The two key pieces of understanding that I am looking to develop are
How to deal with ISession and
ISessionFactory.
How to implement the repository pattern without leaking any details of its nHibernate implemenation.
I'm aware of Sharp Architecture and reading through that now - Its interesting but I'm more keen on finding a straight-forward web app to pick apart than another framework to learn.
Thanks in advance.
I put together a project that offers an example of how to do this using nhibernate and asp.net mvc 2. The repository and nhibernate implementations will be almost the same. Probably the biggest change will be the ioc / dependency injection piece. Take a look. It should provide a solid starting point. Here is the URL.
http://gpsnerd.codeplex.com
Let me know if you have questions.
Bob
Take a look at https://bitbucket.org/FunnelWeb/dev
FunnelWeb is a blog engine based on ASP.NET MVC and NHibernate.
It is opensource and used by many bloggers/develoeprs
Related
I recently posted a question regarding NHibernate. This lead me to check Codesmith's framework PLINQO for NHibernate.
At the same time, i was reading a tutorial on nhibernate at their official site (as i was looking at the generated project by PLINQO).
I am not an expert on NHibernate but what i am looking at right now (PLINQO Generated NHibernate project) looks to me very sloppy, pretty much a recipe for disaster. It creates a set of "Entities" that i am guessing is the business object? A big mess to my eyes.
Does anyone has experience with Codesmith's NHibernate?
Can anyone point me to a mc daddy of NHibernate. I have found so many variants so far that i am already overwhelmed with all this.
Thanks you.
I work for CodeSmith Tools. How do you feel the generated project looks sloppy? How would you improve it? We try to separate out the entities (POCOs) / hbm's for consistency and easy of use (as Randy detailed above). The Entities are generated directly from what is defined in the hbm file, which can be customized without losing your changes.
The generated project follows the architecture of Linq-to-SQL and Entity Framework. We feel this allows developers on the Microsoft Stack to switch between backends quickly (NHibernate to EF or EF to NHibernatE) while minimizing the amount of code changes.
The generated datacontext manages the NHibernate sessions for you while giving you access to query extensions, caching and much more. Also, you don't lose any core NHibernate features as we just extend the core libraries. All of the core features are available on the DataContext under an advanced property.
P.S., The best place to post questions and get a timely response is via our forums.
There seems to be quite a bit of information regarding using NHibernate and WCF Web Services but I'm struggling to find a definitive guide on how to implement the two technologies together in a efficient, thread safe way.
Specifically I want to grab the ISession object and uses that to get and save data through my existing repositories. My Business Objects, Unit Tests and ASP.NET Web Application all use the NHibernate framework and it works just great (it's my first hobby project using an ORM). My big question is how to combine this great framework with WCF Web Services.
I've read that version 3.0 NHibernate has NHibernate.Context.WcfOperationSessionContext but I'm unsure of it's implementation (see this question). From what I understand, one option is to store the ISession object in the OperationContext?
Can anyone point me in the direction of a implementation example?
Many thanks.
Here is a post describing, in detail, all the steps for registering and using the WcfOperationSessionContext. It also includes instructions for using it with the agatha-rrsl project.
WCF and Nhibernate work together in Sharp Architecture project. You can have a look at their implementation
Can anyone point me to any self-contained, complete, current reference materials/projects using NHibernate in an ASP.NET MVC2 application?
I have looked at Sharp Architecture, but I am not sure I need the complexity in that project. I certainly don't know enough about it to know if it is over-engineered for my purposes.
I would like to see more types of implementations to gauge the various ways people have skinned this cat.
This video series on nHibernate is great and they are using MVC Storefront as the base for the work:
http://www.tekpub.com/production/nhibernate
Code is here:
http://github.com/robconery/Kona
Another great MVC Resource (if you need one) is their MVC Videos:
http://www.tekpub.com/production/aspmvc
and
http://www.tekpub.com/production/byob
I can't recommend them enough.
Max Schilling
Gave it to Max for just answering. :)
But, for the record, here's additional apps to consider, should you end up here:
Sharp Architecture (the Northwind app
is okay but lean, not typical
enterprisey stuff)
Who Can Help Me? (great stuff and
kept up-to-date)
FubuMVC has good sample apps (based
on MVC not MVC2 at the time of this
post)
Thanks.
Or the concepts/best practices used there are now deprecated? I'm just starting to use NHibernate and I'm having a hard time finding good real life samples.
http://www.codeproject.com/KB/architecture/NHibernateBestPractices.aspx
As you can see for the dates the author (Billy McCafferty) didn't update it in a long time. There is so much more on the NHibernate ground now but most of the concepts in that article still apply.
You may want to checkout additional sources like:
http://nhforge.org/
http://fabiomaulo.blogspot.com/
http://fluentnhibernate.org/
If you are using NHibernate in web applications, Billy McCafferty built an excelent framework on top of NHibernate and ASP.net MVC. http://www.sharparchitecture.net/
And this open source app is an awesome sample: http://whocanhelpme.codeplex.com/
I'm looking at new architecture for my site and was wondering if pairing NHibernate with a web service core is a good idea. What I want to do is make my webservice the core of my business, from the site front ends to the utilties I write. I'm trying to make all of my UIs completely ignorant of anything but my service API's.
In a simple strawman experiement, I'm running into issues with Serialzing my Iesi ISets....this is causing me to rethink the strategy altogether.
I know I could just develop a core Library (dll) and reference that in each of my applications, but maintaining that dll's version over a minimum of 6 applications seems like it's going to cause me much pain.
With NHibernate, what are the pro's and con's of those two approaches?
I see no problem in using NHibernate and webservices together - I just don't think it's a good idea to send the entities themselves over "to the other side".
A better approach is to use a set of DTOs that are made for the service - then you won't be running into issues like that of serializing unknown types and such.
You can use a library like AutoMapper to do the mapping from the entities to the DTOs.
There's a lot of stuff written about this, some of it:
http://martinfowler.com/bliki/FirstLaw.html
http://ayende.com/Blog/archive/2009/05/14/the-stripper-pattern.aspx
http://elegantcode.com/2008/04/27/dtos-or-serialized-domain-entities/
DTOs vs Serializing Persisted Entities
As a side note for the service it self, you could design wise use an approach like Davy Brion describes here: http://davybrion.com/blog/2009/11/requestresponse-service-layer-series/
I don't know NHibernate, but want to remind you that you should be using WCF for new web service development, unless you are stuck in the past (.NET 2.0). Microsoft now considers ASMX web services to be "legacy technology", and you can imagine what that means.