Hi,

NHibernate version: 1.2.1

I am currently writing a simple WinForms tool to export mappings to DDL using SchemaExport. It allows the user to select one or more dll files to use.

The following is done:



AddAssembly throws the following (inner) exception:

Could not load file or assembly '<correct assembly name>' or one of its dependencies. The system cannot find the file specified.":"<assembly filename minus extension>"

So to me it seems that for some reason NHibernate is trying to load the assembly file without the extension.

The inner IOException is thown in NHibernate.Cfg.HbmBinder.ClassForFullNameChecked(String fullName, String errorMessage)

Any idea what I'm doing wrong here?

I ended up using the AddDocument(doc, name) method from the NHibernate.Cfg.Configuration class;

Load your assembly and then call
Stream stream = new MemoryStream();
stream = HbmSerializer.Default.Serialize(assembly);

This dumps the xml into the stream which you then load into the configuration.

Hi,

My assembly already contains the mapping files as embedded resources. Hence the use of #AddAssembly which is supposed to add all of an assembly´s embedded resources whose names end with .hbm.xml.

I take it from your code you are having NHibernate generate a mapping based on attributes set on classes in the assembly. Correct me if I´m wrong.

I could go and try to manually extract the resources from the assembly and pass those to AddDocument, but I am not sure that would resolve this issue.

Have you tried: cfg.AddAssembly(fileName); ? Do you get the same error here ?

I have tried AddAssembly(string) with the simple assembly name:



FNFException loading file equal to asm.GetName().Name



FNFException loading file equal to asm.FullName

Ok, indeed it looks like trying the correct filename might be worth trying even if it isn't supported by the API:



Alas, this results in a FileLoadException. Inner stack trace:
" at System.Reflection.AssemblyName.nInit(Assembly& assembly, Boolean forIntrospection, Boolean raiseResolveEvent)\r\n at System.Reflection.Assembly.InternalLoad(String assemblyString, Evidence assemblySecurity, StackCrawlMark& stackMark, Boolean forIntrospection)\r\n at System.Reflection.Assembly.Load(String assemblyString)\r\n at NHibernate.Cfg.Configuration.AddAssembly(String assemblyName)"

Original inner stack trace for comparison:
" at System.Reflection.Assembly._nLoad(AssemblyName fileName, String codeBase, Evidence assemblySecurity, Assembly locationHint, StackCrawlMark& stackMark, Boolean throwOnFileNotFound, Boolean forIntrospection)\r\n at System.Reflection.Assembly.nLoad(AssemblyName fileName, String codeBase, Evidence assemblySecurity, Assembly locationHint, StackCrawlMark& stackMark, Boolean throwOnFileNotFound, Boolean forIntrospection)\r\n at System.Reflection.Assembly.InternalLoad(AssemblyName assemblyRef, Evidence assemblySecurity, StackCrawlMark& stackMark, Boolean forIntrospection)\r\n at System.Reflection.Assembly.InternalLoad(String assemblyString, Evidence assemblySecurity, StackCrawlMark& stackMark, Boolean forIntrospection)\r\n at System.Reflection.Assembly.Load(String assemblyString)\r\n at NHibernate.Util.ReflectHelper.TypeFromAssembly(AssemblyQualifiedTypeName name, Boolean throwOnError)\r\n at NHibernate.Util.ReflectHelper.ClassForName(String name)\r\n at NHibernate.Cfg.XmlHbmBinding.Binder.ClassForFullNameChecked(String fullName, String errorMessage)"

Vexing...

Same problem using NHibernate 2.0

Anyone at all have experience with run time loading of assemblies and mapping files embedded therein?

We load the assembly ourselves and then loop through the embedded resources. This makes it clear when a particular resource has a problem:



We also subscribe to AppDomain.CurrentDomain.AssemblyResolve, you might need to do that if NHibernate wants to load the assembly itself and has problems locating it.