hbm2net

Well, with the binary version:

Unzip in a folder, an example hbm file is present in the zip, as well as a config file to use the t4generator.

Then simple use hbm2net --config=t4config.xml *.hbm.xml. You should see the output under the folder "generated" in the current directory. May be more interesting will be have a look at the sources: I provided a modified version of the original unit test: by launching the test called T4DefaultTemplate you should se how the job is done. The templates currently used are embedded as resources file in the genertaor assembly.

Hope this help.

I found some problem too in passing "variables" to t4 templates, basically the problem was on serializing the ClassMapping stuff, because hosting t4 needs a separate app-domain. So i cut-off the problem in a tricky way: just reused the same app domain, this has as a side effect a memory leakage, and I accepted it since this is a tool to launch one-shot. There is some other advantage in using t4 instead of NVelocity: you can easily embed some code to do some generation logic in the template itself.