Comments on: Fluent NHibernate’s AutoPersistenceModel: I Love it!

By: links for 2009-06-14 « Praveen’s Blog

links for 2009-06-14 « Praveen’s Blog — Mon, 15 Jun 2009 00:10:04 +0000

[...] » Fluent NHibernate’s AutoPersistenceModel: I Love it! (tags: tools development .net c# configuration nhibernate fluent orm mapping fluentnhibernate) [...]

By: Rusty

Rusty — Fri, 06 Feb 2009 20:55:42 +0000

Hello Chris, Would you happen to have Visual Studio 2005 solution build for this test, If so can you provide a zip file for it. I tried testing it, but keep getting null pointer excpetion.

Thanks

By: Pucca

Pucca — Mon, 26 Jan 2009 22:07:01 +0000

Hi, I tried using your code in my web application but I’m getting error bebow. Do you know what could possibly be causing this? thanks.
If not, Can you post the code so I can compare it to my code and see what I’m doing wrong.

Exception Details: System.InvalidOperationException: Late bound operations cannot be performed on types or methods for which ContainsGenericParameters is true.

Source Error:

Line 55: var peristenceModel = AutoPersistenceModel.MapEntitiesFromAssemblyOf();
Line 56:
Line 57: peristenceModel.Configure(config);
Line 58:
Line 59: var document = peristenceModel

Stack Trace:

[InvalidOperationException: Late bound operations cannot be performed on types or methods for which ContainsGenericParameters is true.]
System.Reflection.RuntimeMethodInfo.ThrowNoInvokeException() +316
System.Reflection.RuntimeMethodInfo.Invoke(Object obj, BindingFlags invokeAttr, Binder binder, Object[] parameters, CultureInfo culture, Boolean skipVisibilityChecks) +2753966
System.Reflection.RuntimeMethodInfo.Invoke(Object obj, BindingFlags invokeAttr, Binder binder, Object[] parameters, CultureInfo culture) +29
System.Reflection.MethodBase.Invoke(Object obj, Object[] parameters) +17
FluentNHibernate.InvocationHelper.InvokeGenericMethodWithDynamicTypeArguments(T target, Expression`1 expression, Object[] methodArguments, Type[] typeArguments) +283
FluentNHibernate.AutoMap.AutoPersistenceModel.FindMapping(Type type) +252
FluentNHibernate.AutoMap.AutoPersistenceModel.Configure(Configuration configuration) +147

By: Peter Morris

Peter Morris — Sun, 25 Jan 2009 07:30:17 +0000

I’ve just come across another very similar blog on the same subject. I added the same comment to that blog too:

It’s weird how this stuff is new. Back in 2002 I was using a tool that did this. In fact, not only does it automap + create the DB, you can also change your model and ask it to generate the script required to “evolve” the DB structure, which is useful at the point of release when you need a SQL script to upgrade a customer’s database structure as part of your server upgrade installer.

It handles class renames, member renames, all sorts. I’ve linked it in the URL (which isn’t mine).

I’ll take a look at NHibernate though, just out of curiousity.

By: eknacks

eknacks — Tue, 09 Dec 2008 21:31:43 +0000

You’ve been knacked. Keep up the good work.

By: Chris Marisic

Chris Marisic — Fri, 05 Dec 2008 14:13:22 +0000

I meant just the table diagrams for your examples here.

By: Chris van de Steeg

Chris van de Steeg — Fri, 05 Dec 2008 08:15:15 +0000

@ChrisMarisic: you can easily create your database schema like so:
new NHibernate.Tool.hbm2ddl.SchemaExport(config).Execute(true, true, false, true);

By: Chris Marisic

Chris Marisic — Thu, 04 Dec 2008 22:30:33 +0000

Could you please post your database schema you have your entities mapping to.

By: Jamie Ide

Jamie Ide — Thu, 04 Dec 2008 14:04:25 +0000

Neat. I knew that auto mapping existed but I wasn’t sure how to customize it.

By the way, you can use
.ConnectionString.FromConnectionStringWithyKey(key)
while initializing the configuration instead of loading it from configuration.

By: znalec

znalec — Thu, 04 Dec 2008 12:14:51 +0000

everybody knows that you loved what you saw by looking at the unit tests…
but what about telling US what you saw?

not everyone on a plannet is a guru in nHibernate topic, and not everyone heard about Fluent mapping. I’ve used nHibernate a bit (and dropped it because of added complexity not needed in a web applications) and I’ve just heard about Fluent NHibernate but I really have no idea what your article was about, sorry…

next time please try to compare 2 situations and clearly show what is the win of using the new feature for beginners, I I would be an expert in Fluent NHibernate I wouldn’t be in a need of reading your article in a first place…

thanks for it anyway, at least I understand NHibernate isn’t as complex as it was…somehow

hope my _criticism_ will move your explanation to NHibernate beginners like me a little closer, thanks