Why nHibernate [modified]

[Lost User]

My experience with it is somewhat mixed. One one side it can be a real pain to configure it and the crappy documentation does not make it any better. But once you got it working, it's really nice. Still, I prefer the oldfashioned way using stored procedures and setting up entities myself deep within the resource access layer. I just don't like it when some 'smart' framework tries to tell me what and what not to do.

"I just exchanged opinions with my boss. I went in with mine and came out with his." - me, 2011 ---
I am endeavoring, Madam, to construct a mnemonic memory circuit using stone knives and bearskins - Mr. Spock 1935 and me 2011

[Not Active]

n.podbielski wrote:

because nHibernate work with Java to

nHibernate is a port of Hibernate for Java, they are not interchangeable. nHiberate came before most of the other tools were available, or mature enough, so a lot of companies already have an investment in the tool.

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I know the language. I've read a book. - _Madmatt

[Pete OHanlon]

nHibernate is a port of Java's hibernate. It took on a life of it's own a while back, and in some ways it outstrips the Java version (or so I'm told). Basically, it's meant to be a database agnostic ORM, so you describe the data you want from it, and leave it to work out how best to get it. The theory here is that companies write software that they can easily port to other database vendors without requiring changes to the data layer. In all my years developing, I've only twice ported to different database vendors and an ORM was no use because we ported deliberately to target DB specific features (e.g. Oracle Spatial).

I'm not a stalker, I just know things. Oh by the way, you're out of milk.

Forgive your enemies - it messes with their heads

My blog | My articles | MoXAML PowerToys | Onyx

[AspDotNetDev]

Know you can finally wrest in piece.

[WikiLeaks Cablegate Cables]

[Pete OHanlon]

When I used it last, I ended up wrapping it in Castle ActiveRecord I got that frustrated with it.

I'm not a stalker, I just know things. Oh by the way, you're out of milk.

Forgive your enemies - it messes with their heads

My blog | My articles | MoXAML PowerToys | Onyx

[n podbielski]

fat_boy wrote:

'know'

Its a trickky one, a silent 'k'.

Jeeez... Did you heard anything about mistakes? Everybody make them, you too. ;P Anyway thanks for pointing it out. It's correct now. You should be happy. ;P

In soviet Russia code debugs You!

[Rajesh R Subramanian]

AspDotNetDev wrote:

Know you can finally wrest in piece.

It looks like the US could use a few English teachers. ;P

"Real men drive manual transmission" - Rajesh.

[AspDotNetDev]

You only found one incorrect word? :confused:

[WikiLeaks Cablegate Cables]

[Rajesh R Subramanian]

Nope, I found more. That's why the joke icon. It was supposed to be funny, ya know? Looks like a bad joke though. :~

"Real men drive manual transmission" - Rajesh.

[Ennis Ray Lynch Jr]

"With this framework I can develop a framework to develop applications" stolen from the old quote: Software Engineer, a person who when presented with a hammer states, with this hammer I can design a tool to drive nails There is a delusion in the business software world that writing to a database is hard and that scalability is a challenge. Of course, when I see code like Int32.Parse(someValue.ToString()) where some value is itself an int, I am not really surprised at this delusion.

Need custom software developed? I do custom programming based primarily on MS tools with an emphasis on C# development and consulting. I also do Android Programming as I find it a refreshing break from the MS. "And they, since they Were not the one dead, turned to their affairs" -- Robert Frost

[Lost User]

Just today I added a tiny baseclass implementing the whole circus around IDisposable and used it to clean up the Dispose() of some of the entities. No big deal at all. Until NHibernate noticed that some entities now had a property that was not declared as virtual. It kept on whining about this and continued to throw exeptions during initialisation. There is no way to tell it to stick with the properties I have mapped and keep clear of stuff I don't want it to put its nose in. And it's no fu**ing Java, so not everything must be virtual. NHibernate must be female. It keeps on nagging and can't accept that some things are none of its business.

"I just exchanged opinions with my boss. I went in with mine and came out with his." - me, 2011 ---
I am endeavoring, Madam, to construct a mnemonic memory circuit using stone knives and bearskins - Mr. Spock 1935 and me 2011

[AspDotNetDev]

Yeah, I got both senses, but I wasn't sure if you meant the more entertaining self-referential joke or not. :)

[WikiLeaks Cablegate Cables]

[Judah Gabriel Himango]

NHibernate is perhaps the oldest and most battle-tested object-relational mapper (ORM) for .NET. If you don't know what ORMs are, or why they're useful, see here[^].

Religiously blogging on the intarwebs since the early 21st century: Kineti L'Tziyon
Judah Himango

[Brady Kelly]

Ennis Ray Lynch, Jr. wrote:

code like Int32.Parse(someValue.ToString()) where some value is itself an int

Ha! That is easily explained. There is no overload of Int32.Parse() that takes an int, so you have to call ToString(), stupid! ;P

[Lost User]

Battle-tested? That's a good way to describe it. The problem is, that the developers have to wage one or another battle against it until they reach some staus quo. Doing everything myself would have been easier on my nerves than making this Diva happy. And its data caching gets a little heavy on the memory side when you have to fetch a greater amount of data. I don't really like to watch when a good server goes to its knees because it's running out of memory. Nope, I don't think this thing is worth the trouble.

"I just exchanged opinions with my boss. I went in with mine and came out with his." - me, 2011 ---
I am endeavoring, Madam, to construct a mnemonic memory circuit using stone knives and bearskins - Mr. Spock 1935 and me 2011

[Steve Mayfield]

my 'k' sticks sometimes too... ;)

Steve _________________ I C(++) therefore I am

[Judah Gabriel Himango]

And I'd rather suffer death by a thousand toothpicks than write all the monotonous, tedious ADO.NET plumbing. :) To each his own.

Religiously blogging on the intarwebs since the early 21st century: Kineti L'Tziyon
Judah Himango

[Vark111]

Everyone else has gone into the why's and wherefore's of using an ORM, so I'll just put in my anecdotal experience. We use nHibernate. If you have a project already started, then back-porting it to nHibernate is a cast-iron b*tch. Don't bother. If you're starting from scratch, though (i.e. you're creating everything from the DB on up), then nHibernate makes things pretty easy. Where it really shines, though, is when one of those designed-from-the-ground-up-with-nHibernate systems needs to get updated to add a column or six to various tables/entities/screens -- nHibernate makes that drop-dead simple. I've had to add fields to applications throughout my career as an internal IS dev, and I've used every conceivable .NET-based data access technology out there - hand-rolled ado.net, MS App Blocks, Datasets (typed and untyped), Linq to SQL, Entity Framework (the early versions), and finally nHibernate, and I can tell you on no uncertain terms, adding (or removing or otherwise altering - think refactoring columns to a FK-related table) data fields to an app is light years easier with NH than with any of the others.

[wizardzz]

I have found on occasion that when companies have a strict requirement for hiring based on a specific third party app, tool, library, etc, it may be because they recently lost their expert in it, and want to hire a direct replacement rather than have somebody new or in house take a peak and learn it.

"Life should not be a journey to the grave with the intention of arriving safely in a pretty and well preserved body, but rather to skid in broadside in a cloud of smoke, thoroughly used up, totally worn out, and loudly proclaiming "Wow! What a Ride!" — Hunter S. Thompson

[Lost User]

Sure. It would be very boring if we all would produce the same paint by numbers code :)

"I just exchanged opinions with my boss. I went in with mine and came out with his." - me, 2011 ---
I am endeavoring, Madam, to construct a mnemonic memory circuit using stone knives and bearskins - Mr. Spock 1935 and me 2011