Fluent NHibernate - exception occurred during configuration of persistence layer

Question

I am using Fluent NHibernate with an external 'hibernate.cfg.xml' file.

Following is the configuration code where I am getting error:

       var configuration = new Configuration();
       configuration.Configure();

       _sessionFactory = Fluently.Configure(configuration)
                .Mappings(m => m.FluentMappings.AddFromAssemblyOf<Template>())
                .BuildSessionFactory();

        return _sessionFactory;

But When NHibernate is trying to configure, I am getting floowing error:

An exception occurred during configuration of persistence layer.

The inner exception says:

The ProxyFactoryFactory was not configured. Initialize 'proxyfactory.factory_class' property of the session-factory configuration section with one of the available NHibernate.ByteCode providers.

I googled and according to some solutions I found, I have made following changes:

1. Add following dlls to my app bin:

   Castle.Core.dll, Castle.DynamicProxy2.dll, NHibernate.ByteCode.Castle.dll

2. Added follwing property in hibernate.cfg.xml

   <property name="proxyfactory.factory_class">NHibernate.ByteCode.Castle.ProxyFactoryFactory, NHibernate.ByteCode.Castle</property>

But still I am getting the same exception.

Answer 1

The problem might be in your hibernate.cfg.xml, double check that is using 2.2 version and if well formed.

The mapping should start like this:

<?xml version="1.0" encoding="utf-8" ?>
<hibernate-configuration xmlns="urn:nhibernate-configuration-2.2">

Along with the error you post, maybe more information is supplied because that error is quite generic to the configuration parser. If not, maybe you can give more details of your hibernate.cfg.xml.