Glassfish example source code file (boot.rb)

This example Glassfish source code file (boot.rb) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" ^TM.

Java - Glassfish tags/keywords

boot, cddl, copyright, gpl, gpl, license, license, rails, rails_gem_version, rails_root, rails_root, rubygems, version, version

The Glassfish boot.rb source code

#
# DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
#
# Copyright (c) 2010 Oracle and/or its affiliates. All rights reserved.
#
# The contents of this file are subject to the terms of either the GNU
# General Public License Version 2 only ("GPL") or the Common Development
# and Distribution License("CDDL") (collectively, the "License").  You
# may not use this file except in compliance with the License.  You can
# obtain a copy of the License at
# https://glassfish.dev.java.net/public/CDDL+GPL_1_1.html
# or packager/legal/LICENSE.txt.  See the License for the specific
# language governing permissions and limitations under the License.
#
# When distributing the software, include this License Header Notice in each
# file and include the License file at packager/legal/LICENSE.txt.
#
# GPL Classpath Exception:
# Oracle designates this particular file as subject to the "Classpath"
# exception as provided by Oracle in the GPL Version 2 section of the License
# file that accompanied this code.
#
# Modifications:
# If applicable, add the following below the License Header, with the fields
# enclosed by brackets [] replaced by your own identifying information:
# "Portions Copyright [year] [name of copyright owner]"
#
# Contributor(s):
# If you wish your version of this file to be governed by only the CDDL or
# only the GPL Version 2, indicate your decision by adding "[Contributor]
# elects to include this software in this distribution under the [CDDL or GPL
# Version 2] license."  If you don't indicate a single choice of license, a
# recipient has the option to distribute your version of this file under
# either the CDDL, the GPL Version 2 or to extend the choice of license to
# its licensees as provided above.  However, if you add GPL Version 2 code
# and therefore, elected the GPL Version 2 license, then the option applies
# only if the new code is made subject to such option by the copyright
# holder.
#

# Don't change this file!
# Configure your app in config/environment.rb and config/environments/*.rb

RAILS_ROOT = "#{File.dirname(__FILE__)}/.." unless defined?(RAILS_ROOT)

module Rails
  class << self
    def boot!
      unless booted?
        preinitialize
        pick_boot.run
      end
    end

    def booted?
      defined? Rails::Initializer
    end

    def pick_boot
      (vendor_rails? ? VendorBoot : GemBoot).new
    end

    def vendor_rails?
      File.exist?("#{RAILS_ROOT}/vendor/rails")
    end

    def preinitialize
      load(preinitializer_path) if File.exist?(preinitializer_path)
    end

    def preinitializer_path
      "#{RAILS_ROOT}/config/preinitializer.rb"
    end
  end

  class Boot
    def run
      load_initializer
      Rails::Initializer.run(:set_load_path)
    end
  end

  class VendorBoot < Boot
    def load_initializer
      require "#{RAILS_ROOT}/vendor/rails/railties/lib/initializer"
      Rails::Initializer.run(:install_gem_spec_stubs)
      Rails::GemDependency.add_frozen_gem_path
    end
  end

  class GemBoot < Boot
    def load_initializer
      self.class.load_rubygems
      load_rails_gem
      require 'initializer'
    end

    def load_rails_gem
      if version = self.class.gem_version
        gem 'rails', version
      else
        gem 'rails'
      end
    rescue Gem::LoadError => load_error
      $stderr.puts %(Missing the Rails #{version} gem. Please `gem install -v=#{version} rails`, update your RAILS_GEM_VERSION setting in config/environment.rb for the Rails version you do have installed, or comment out RAILS_GEM_VERSION to use the latest version installed.)
      exit 1
    end

    class << self
      def rubygems_version
        Gem::RubyGemsVersion rescue nil
      end

      def gem_version
        if defined? RAILS_GEM_VERSION
          RAILS_GEM_VERSION
        elsif ENV.include?('RAILS_GEM_VERSION')
          ENV['RAILS_GEM_VERSION']
        else
          parse_gem_version(read_environment_rb)
        end
      end

      def load_rubygems
        require 'rubygems'
        min_version = '1.3.1'
        unless rubygems_version >= min_version
          $stderr.puts %Q(Rails requires RubyGems >= #{min_version} (you have #{rubygems_version}). Please `gem update --system` and try again.)
          exit 1
        end

      rescue LoadError
        $stderr.puts %Q(Rails requires RubyGems >= #{min_version}. Please install RubyGems and try again: http://rubygems.rubyforge.org)
        exit 1
      end

      def parse_gem_version(text)
        $1 if text =~ /^[^#]*RAILS_GEM_VERSION\s*=\s*["']([!~<>=]*\s*[\d.]+)["']/
      end

      private
        def read_environment_rb
          File.read("#{RAILS_ROOT}/config/environment.rb")
        end
    end
  end
end

# All that for this:
Rails.boot!