jruby

Quite-probably a silly question, as I don't know much about Java/Jython/JRuby/bytecode, but.. I stumbled across _why's unholy again today.. It allows you to output Python bytecode from Ruby code.. Basically allowing them to produce the same bytecode.. Jython outputs Java bytecode, as does JRuby.. Since these both compile to the same bytecode, does this mean you could potentially use any Python library from Ruby, and Ruby libraries from Python? No, that won't work. At least not the way you think it would. Interoperability between Jython and JRuby works the same way as between CPython and YARV:

Is there any solution to work with Btrieve/Pervasive db from Ruby level? Any gem? Maybe somebody have some experience with such a thing? Or maybe use some Java libs through Jruby? I've never used Jruby Never worked with that, but if there's a JDBC adapter for it, then it's a good idea to use JRuby. Using JRuby is dead simple, visit JRuby.org . @kell I used jruby and JDBC Pervasive driver. Simple example: require "java" module JavaSql include_package "java.sql" end pervasive_driver = Java::JavaClass.for_name("pervasive.jdbc.PervasiveDriver") conn = JavaSql::DriverManager.getConnection("jdbc

I'd like to launch a jruby/rails app to use Postgres. But I'd like to use H2 in Postgres compatibility mode when running in development and test. Its no problem bringing up the app in H2, or in postgresql, but how do I configure to run the postgresql adaptor, using an embedded H2 database? For example: something like this: database.yml development: # adapter: jdbch2 # database: db/development/database adapter: postgresql encoding: unicode database: database # driver: org.h2.Driver url: jdbc:h2:~/db/development;MODE=PostgreSQL test: ... Gemfile: ... gem 'activerecord-jdbch2-adapter' #gem 'jdbc

i need a way to run following nokogiri script #parser.rb require 'nokogiri' def parseit() //... end and call the parseit() while running below main.rb in jruby #main.rb require 'parser' parseit() Of course the problem is jruby cannot find 'nokogiri' as I have not installed it aka nokogiri-java via jruby -S gem install nokogiri The reason is there is some bug I found in nokogiri running under Jruby, so I have only installed nokogiri on Ruby not Jruby. The parser.rb runs perfectly under just Ruby. So my objective is to be able to run parseit() without having to install nokogiri on Jruby!

Does anyone know how to use JRuby and Compass modules to compile SASS (*.scss) files within build.xml? I'm able to use the Sass::Exec module within sass standalone installation to compile from *.scss to *.css in the following manner: <!-- Compile SCSS files copied to target folder --> <property name="stylesheetFolder" location="myproject/stylesheet"/> <property name="inputFiles" value="${stylesheetFolder}/[^_]*.scss" /> <echo message="Compiling SCSS files from ${stylesheetFolder}..." /> <script language="ruby" classpath="${env.EP_LIB}/jruby/complete/${jruby-complete.build.jar}"> <![CDATA[

I have following code: module DataMapper module Resource @@page_size = 25 attr_accessor :current_page attr_accessor :next_page attr_accessor :prev_page def first_page? @prev_page end def last_page? @next_page end def self.paginate(page) if(page && page.to_i > 0) @current_page = page.to_i - 1 else @current_page = 0 end entites = self.all(:offset => @current_page * @@page_size, :limit => @@page_size + 1) if @current_page > 0 @prev_page = @current_page end if entites.size == @@page_size + 1 entites.pop @next_page = (@current_page || 1) + 2 end entites end end end Then I have call of #paginate: