Description

The Scala plugin enables compiling and running Scala code on your Griffon application. Scala is a statically typed language for the JVM that has a great level of interoperability with Java, and so with Groovy too.

Installation

The current version of griffon-scala-plugin is 0.8
To install just issue the following command

griffon install-plugin scala

Usage

You must place all Scala code under $appdir/src/scala, it will be compiled first before any sources available on griffon-app or src/main which means you can't reference any of those sources from your Scala code, while the Groovy sources can. However in order to send a message back to the calling code you can create a Scala Trait (roughly equivalent to a Java interface) and have a Groovy class implement it. Another alternative would be the usage of Structural Types.

Starting with version 0.3 you will be able to use the LangBridge Plugin facilities to communicate with other JVM languages.

Scripts

scala-test - runs Scala tests found in $basedir/test/scalatest using Scalatest 1.0. Test classes must have Tests as suffix.
scala-check - runs specifications found in $basedir/test/scalacheck using Scalacheck 1.6. Test classes must have Specification as suffix.
scala-repl - runs a Scala REPL with the application's classpath fully configured.

Configuration

The BuildConfig.groovy file in griffon-app/conf folder of your application can be used to configure behavior of the scala plugin.

scala.src.encoding='UTF-8'  //Scala src file encoding, UTF-8 by default

The following properties can be configured for scala-test

scala.test.parallel - run tests in parallel. Default: false.
scala.test.numthreads - set the number of threads for parallel execution.
scala.test.haltonfailure - whether to stop tests on failure or not. Default: false.
scala.test.fork - fork the jvm. Default: false.
scala.test.maxmemory - maximum memory to be used by test jvm.
scala.test.membersonly - specify suites using members-only or wildcard package names.
scala.test.wildcard - specify suites using members-only or wildcard package names.
scala.test.reporter.stdout - sets the flags for the stdout reporter. Default: FAB.
scala.test.reporter.file - sets the name for a file reporter.
scala.test.reporter.reporterClass - sets the className for a reporter class.
scala.test.scalaConfig - Map with additional properties.

The scala-test script supports the following command line flags:

stdout - overwrite the flags for the stdout reporter.
file - sets the name for a file reporter.
reporterClass - sets the className for a reporter class.
suite - only executes the specified suite.

The scala-check script supports the following command line flags:

spec - only executes the specified specification.

History

Version	Date	Notes
0.8	04-01-11	Release sync with Griffon 0.9.2
0.7.1	08-24-10	Avoid overwriting default target accidentally
0.7	07-22-10	Release sync with Griffon 0.9, Upgraded to Scala 2.8.0, Scalatest 1.2, Scalacheck 1.7
0.6	03-01-10	Upgraded to Griffon 0.3
0.5.1	11-17-09	Updated bundled libs to Scala 2.7.7.final
0.5	11-15-09	Added Scalatest 1.0, Scalacheck 1.6 and REPL (2.7.6) support
0.4	09-10-09	Updated bundled libs to Scala 2.7.5.final. Check timestamp of compiled sources to decide if recompile is needed
0.3	07-28-09	Added dependency to LangBridge Plugin
0.2	04-02-09	Synchronized features with grails-scala-plugin 0.3
0.1.1	03-09-09	Bumped version to be compatible with Griffon 0.1.0
0.1