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=begin
Copyright(c) 2010 arton
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
$Id: rjbextension.rb 147 2010-10-23 05:10:33Z arton $
This file is from Andreas Ronge project neo4j
http://github.com/andreasronge/neo4j/blob/rjb/lib/rjb_ext.rb
Copyright (c) 2008 Andreas Ronge
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
THE SOFTWARE.
=end
# Loads the JVM with the given <tt>classpath</tt> and arguments to the jre.
# All needed .jars should be included in <tt>classpath</tt>.
module Kernel
alias rjb_original_require require
def require(path)
rjb_original_require(path)
rescue LoadError
# check that it's not a jar file
raise unless path =~ /\.jar/
# This will maybe use the wrong jar file from a previous version of the GEM
# puts "LOAD PATH #{$LOAD_PATH}"
found_path = $LOAD_PATH.reverse.find{|p| File.exist?(File.join(p,path))}
raise unless found_path
abs_path = File.join(found_path, path)
# check that the file exists
raise unless File.exist?(abs_path)
# try to load it using RJB
if Rjb::loaded?
Rjb::add_jar abs_path
else
Rjb::add_classpath abs_path
end
end
def load_jvm(jargs = [])
return if Rjb::loaded?
classpath = ENV['CLASSPATH'] ||= ''
Rjb::load(classpath, jargs)
end
end
class JavaPackage
def initialize(pack_name, parent_pack = nil)
@pack_name = pack_name
@parent_pack = parent_pack
@cache = {}
end
def method_missing(m, *args)
# return if possible old module/class
@cache[m] ||= create_package_or_class(m)
end
def create_package_or_class(m)
method = m.to_s
if class?(method)
Rjb::import("#{self}.#{method}")
else
JavaPackage.new(method, self)
end
end
def to_s
if @parent_pack
"#{@parent_pack.to_s}.#@pack_name"
else
"#@pack_name"
end
end
def class?(a)
first_letter = a[0,1]
first_letter >= 'A' && first_letter <= 'Z'
end
@@cache = {}
def self.new(pack_name, parent_pack = nil)
@@cache[pack_name] ||= super
end
end
module RjbConf
# make them as singleton
ORG = JavaPackage.new('org')
JAVA = JavaPackage.new('java')
end
def org
RjbConf::ORG
end
def java
RjbConf::JAVA
end
|
