Xitrum 3.14: Autoreload classes and support both Scala 2.11.x and 2.10.x

[Ngoc Dao]

Happy World Cup!

The Xitrum team would like to announce Xitrum 3.14 (Xitrum π):

https://github.com/ngocdaothanh/xitrum/blob/master/CHANGELOG.rst

This version adds some big features:

1. Autoreload classes and recollect routes in development mode

See screencast:

http://youtu.be/Ds7kQ0w70Kk

Under the hood, in development mode Xitrum uses its file monitoring feature (http://xitrum-framework.github.io/guide/howto.html#monitor-file-change) to monitor the directory target/scala-<version>/classes. When there's a change, at the next request Xitrum will create a new class loader to load the new/modified classes.

2. xitrum.Component

You can create reusable view components that can be embedded to multiple views. See the Xitrum Guide Book:

http://xitrum-framework.github.io/guide/action_view.html#component

3. Allow the use of OpenSSL engine for faster HTTPS

This is a feature of the network library Netty that Xitrum uses:

http://netty.io/wiki/forked-tomcat-native.html

To enable the OpenSSL engine, Apache Portable Runtime (APR) and OpenSSL must be in the library load path such as system library directories, $LD_LIBRARY_PATH (Linux, Mac), and %PATH% (Windows).

In old xitrum.conf:

```

keystore {

  path                = config/keystore.jks

  password            = xitrum

  certificatePassword = xitrum

}

```

Now (https://github.com/xitrum-framework/xitrum-new/blob/master/config/xitrum.conf):

```

https {

  useOpenSSL    = false

  certChainFile = config/ssl_example.crt

  keyFile       = config/ssl_example.key

}

```

Xitrum 3.14 has updated Netty to its latest version 4.0.20:

http://netty.io/news/2014/06/12/4.html

4. Support both Scala 2.10.x and 2.11.x

You should use Scala 2.11.x whenever possible, but because your project may use a library that has not been updated to support Scala 2.11.x, you are forced to use Scala 2.10.x.

Xitrum 3.11 to 3.13 only support Scala 2.11.x. From Xitrum 3.14 you can again also use Scala 2.10.x.

--------

To update Xitrum in your project from 3.13 to 3.14, you have to update xitrum.conf (as above) and build.sbt in your project.

Example:

https://github.com/xitrum-framework/xitrum-new/commit/119da856b9d1f78acc480200628f445a54def867

[Gert Thiel]

Great news. No costly JRebel needed.