Generate XML mappings from fluent Nhibernate

How do I generate xml mappings files as part of my tests in MappingIntegrationTests

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You generate XML mappings by calling the ExportTo() method.

For example:

ISessionFactory sessionFactory = FluentNHibernate.Cfg.Fluently.Configure()
  .Mappings(m => m.FluentMappings.AddFromAssembly(assembly)

See here for documentation:

You can do something like:

 config.Mappings(m => 
        m.FluentMappings.ExportTo("...file path here...");
        m.HbmMappings.ExportTo("...file path here...");
        m.AutoMappings.ExportTo("...file path here...");

I don’t like it myself. If I find some better way (if such exists at all) I’ll update the answer.


I use (almost) this extension method to get the xbm in memory so I can view it in my test project:

   public static IDictionary<string, string> LoadHBM(this FluentConfiguration cfg)
        var result = new Dictionary<string, string>();
        var mem = new MemoryStream();
        var writer = new StreamWriter(mem);
        var reader = new StreamReader(mem);

        cfg.Mappings(x =>

        mem.Seek(0, 0);
        var hbm = reader.ReadToEnd();

        var objects = XElement.Parse("<junk>" + hbm + "</junk>").Elements();
        objects.ToList().ForEach(x => result.Add(x.Elements().First().Attribute("name").Value, x.ToString()));
        return result;

Edit: Updated for FNH 1.2.