sbt tutorial

sbt (Scala Build Tool) とは、ビルドツール

https://github.com/harrah/xsbt

ビルドツールとは、

• コンパイルツール

コンパイル以外にも、以下を行う

• 依存ライブラリのダウンロード(ivyの機能）
• ユニットテスト実行
• jarファイル生成

Scala版Ant

play2 コマンドはsbt-launch.jarの呼び出し

emole:diva-alpha magnet$ which play2
/usr/local/bin/play2
emole:diva-alpha magnet$ cat /usr/local/bin/play2 
#! /usr/bin/env sh

PRG="$0"
while [ -h "$PRG" ] ; do
    PRG=`readlink "$PRG"`
done
dir=`dirname $PRG`

if [ -f conf/application.conf ]; then
  if test "$1" = "clean-all"; then
    rm -rf target
    rm -rf tmp
    rm -rf logs
    rm -rf dist
    rm -rf project/project
    rm -rf project/target
    if [ $# -ne 1 ]
    then  
     shift
    else
      echo "[info] Done!"
      exit 0
    fi
  fi
  if test "$1" = "stop"; then
    if [ -f RUNNING_PID ]; then
      echo "[info] Stopping application (with PID `cat RUNNING_PID`)..."
      kill `cat RUNNING_PID`

      RESULT=$?

      if test "$RESULT" = 0; then
        echo "[info] Done!"
        exit 0
      else
        echo "[\033[31merror\033[0m] Failed ($RESULT)"
        exit $RESULT
      fi
    else
      echo "[\033[31merror\033[0m] No RUNNING_PID file. Is this application running?"
      exit 1
    fi
  fi
  
  if test "$1" = "debug"; then
    JPDA_PORT="9999"
    shift      
  fi

  if [ -n "$1" ]; then
    JPDA_PORT="${JPDA_PORT}" $dir/framework/build "$@"
  else
    JPDA_PORT="${JPDA_PORT}" $dir/framework/build play
  fi
  
else
  java -Dsbt.ivy.home=$dir/repository -Dplay.home=$dir/framework -Dsbt.boot.properties=$dir/framework/sbt/play.boot.properties -jar $dir/framework/sbt/sbt-launch.jar "$@"
fi
emole:diva-alpha magnet$ 

build.sbt で使用できる記述

libraryDependencies

plugins.sbt: sbt プラグインを使用している

play2 は、Play sbt plugin を使用している

emole:project magnet$ cat project/plugins.sbt 
// Comment to get more information during initialization
logLevel := Level.Warn

// The Typesafe repository 
resolvers += "Typesafe repository" at "http://repo.typesafe.com/typesafe/releases/"

// Use the Play sbt plugin for Play projects
addSbtPlugin("play" % "sbt-plugin" % "2.0")

scalaでつかえるdatabase framework

http://stackoverflow.com/questions/1362748/wanted-good-examples-of-scala-database-persistence