jRuby Rails 3

jruby_rails3

if options[:database] !~ /^jdbc/
  jdbc_db = case options[:database]
            when /^postgresql/
              "postgres"
            when /^mysql2/
              "mysql"
            when /^(mysql|sqlite3)/
              options[:database]
            end

  db_gem_line = "gem '#{gem_for_database}'"
  db_gem_regexp = Regexp::quote(db_gem_line).gsub("'", "['\"]")

  jdbc_gem_line = jdbc_db != 'sqlite3' ? "\n  gem 'jdbc-#{jdbc_db}', :require => false" : <<JDBC
\n
  # As rails --database switch does not support derby, hsqldb, h2 nor mssql
  # as valid values, if you are not using SQLite, comment out the SQLite gem
  # below and uncomment the gem declaration for the adapter you are using.
  # If you are using oracle, db2, sybase, informix or prefer to use the plain
  # JDBC adapter, comment out all the adapter gems below.

  # SQLite JDBC adapter
  gem 'jdbc-sqlite3', :require => false

  # Derby JDBC adapter
  #gem 'activerecord-jdbcderby-adapter'

  # HSQL JDBC adapter
  #gem 'activerecord-jdbchsqldb-adapter'

  # H2 JDBC adapter
  #gem 'activerecord-jdbch2-adapter'

  # SQL Server JDBC adapter
  #gem 'activerecord-jdbcmssql-adapter'
JDBC

  gsub_file "Gemfile", /^#{db_gem_regexp}\w*$/, <<DB
platforms :ruby do
  #{db_gem_line}
end

platforms :jruby do
  gem 'activerecord-jdbc-adapter'#{jdbc_gem_line}
end
DB

  # Avoid MySQL2 option for Rails 3
  if options[:database] =~ /mysql/
    gsub_file "config/database.yml", /mysql2/, 'mysql'
  end

  # Add comments to config/database.yml
  comment = <<COMMENTS
# If you are using mssql, derby, hsqldb, h2 or oracle with one of the
# ActiveRecord JDBC adapters, configure your database setting as the
# example below. (Note that for oracle you will need to include the
# driver jar on the classpath.):
#
#development:
#  adapter: mssql
#  username: <username>
#  password: <password>
#  host: localhost
#  database: dummy

# If you are using db2, sybase, informix or prefer to directly specify
# the JDBC connection information, configure your database setting as
# the example below (requires you to download and manually install the
# database vendor's JDBC driver .jar file). See your driver
# documentation for the apropriate driver class and connection string:
#
#development:
#  adapter: jdbc
#  username: <username>
#  password: <password>
#  driver: com.ibm.db2.jcc.DB2Driver
#  url: jdbc:db2://localhost:5021/dummy

COMMENTS

  prepend_to_file "config/database.yml", comment
end

if Rails::VERSION::MAJOR > 3 || Rails::VERSION::MINOR > 0
  rhino_gem_line = <<RHINO

# the javascript engine for execjs gem
platforms :jruby do
  group :assets do
    gem 'therubyrhino'
  end
end
RHINO
  append_to_file "Gemfile", rhino_gem_line
end