Turbine with Db4objects.Db4o.Linq.dll gives Unable to load one or more of the requested types exception

Answer 1

Sounds like a problem with your target type. You might try the following:

1. Remove all service registrations and try them one at a time to determine the type that is causing the problem.
2. Ensure that you can successfully instantiate the target type yourself.
3. Verify that the target type doesn't have any other dependencies that are not accounted for in your service registrations.

It would be helpful to see the declaration and constructor(s) of the target type(s).

Try switching to another IoC Container:

Add a reference to MvcTurbine.Ninject.dll

Then:

public class MvcApplication : TurbineApplication
{
    static MvcApplication()
    {
        //ServiceLocatorManager.SetLocatorProvider(() => new UnityServiceLocator());           
        ServiceLocatorManager.SetLocatorProvider(() => new NinjectServiceLocator()); 
    }
}

Answer 2

For the sake of writing down a proper answer. I think you're getting a TypeLoadException triggered by a failure to load an assembly that is referenced by Db4objects.Db4o.Linq.

Looking at it in ildasm shows that it requires the following assemblies that are shipped with db4o (use the same assemblies that came with Db4objects.Db4o.Linq to avoid any mismatch).

Those assemblies are:

• Mono.Cecil
• Cecil.FlowAnalysis

For the record, abd as of today, they're used by the LINQ to db4o query optimizer to analyze properties access in linq queries.

Answer 3

In order for Turbine to register your types, it needs to have the hosting assembly (Db4objects.Db4o.Linq) and ANY other assemblies that the hosting assembly might reference.

The stack trace in your original post says that when trying to resolve the types for your application something failed to resolve, which in this case it's not present.

Answer 4

Jeff, MVC Turbine currently only supports MVC 1.0, I'm in the process of getting MVC 2.0 support for both .NET 3.5 and .NET 4.0. Please check http://turbineproject.com for information when they will be released.