Latest from ChinaonRails's JRuby

rava 用ruby写的JavaVM ... no reply

bd7lx — Mon, 06 Sep 2010 09:27:12 +0800

http://github.com/koichiro/rava

http://www.namikilab.tuat.ac.jp/~sasada/prog/rava.html

项目始于2002年，最近加入到github

全都是日文的文档说明

http://yokolet.blogspot.com/2010/02/rava-pure-ruby-javavm.html

http://www.slideshare.net/koichiro/rava-on-jruby

Koichi 简称ko1 是YARV项目的主导者

还有个ruva更加玩具的toy jvm in Ruby
http://ruva.rubyforge.org/

视频 Jruby on Rails 部署监控和维护 ... no reply

bd7lx — Tue, 31 Aug 2010 16:51:22 +0800

http://blog.nicksieger.com/articles/2010/08/30/deploying-monitoring-and-troubleshooting-rails-on-jruby

大约1小时

jruby与开源分布式应用/网格 Hazelcast ... no reply

bd7lx — Thu, 05 Aug 2010 11:29:30 +0800

http://cogitations.arbia.co.uk/post/863857348/distributed-ruby

http://www.hazelcast.com/

Hazelcast是一个高度可扩展的数据分发和集群平台。特性包括：

提供java.util.{Queue, Set, List, Map}分布式实现。
提供java.util.concurrency.locks.Lock分布式实现。
提供java.util.concurrent.ExecutorService分布式实现。
提供用于一对多关系的分布式MultiMap。
提供用于发布/订阅的分布式Topic（主题）。
通过JCA与J2EE容器集成和事务支持。
提供用于安全集群的Socket层加密。
支持同步和异步持久化。
为Hibernate提供二级缓存Provider 。
通过JMX监控和管理集群。
支持动态HTTP Session集群。
利用备份实现动态分割。
支持动态故障恢复

JRuby with C Extension Support ... no reply

bd7lx — Tue, 20 Jul 2010 10:00:41 +0800

http://blog.headius.com/2010/07/what-jruby-c-extension-support-means-to.html

Check out (or fork and check out) the JRuby repository from http://github.com/jruby/jruby:

git clone git://github.com/jruby/jruby.git

Switch to the "cext" branch:

git checkout -b cext origin/cext

Do a clean build of JRuby plus the cext subsystem:

ant clean build-jruby-cext-native

...JRuby has been their dependence on C extensions that only work on regular Ruby. In some cases, these extensions have been written to improve performance, like the various json libraries. Some of that performance could be less of a concern under Ruby 1.9, but it's hard to claim that any implementation will be able to run Ruby as fast as C for general-purpose libraries any time soon.

想提速，没别的招了

RESTful风格Web服务 JRuby里用Jersey ... no reply

bd7lx — Wed, 02 Jun 2010 11:45:40 +0800

http://blog.headius.com/2010/06/restful-services-in-ruby-using-jruby.html

Jersey是一个开源的、可以用于生产环境的 JAX-RS（RESTful Web Services 的 Java API 规范，JSR-311）实现。通过 Jersey 可以很方便的使用 Java 来创建一个 RESTful Web Services。

https://jersey.dev.java.net/source/browse/*checkout*/jersey/tags/jersey-1.0.3/jersey/getting-started.html

jruby 1.5支持Java Annotation么？ ... 3 replies

aztack — Thu, 27 May 2010 16:22:58 +0800

jruby 1.5支持Java Annotation么？

require.jar.in.jruby ... 2 replies

axgle — Sat, 15 May 2010 19:07:20 +0800

#http://viralpatel.net/blogs/2009/04/generate-pdf-file-in-java-using-itext-jar.html
require 'java'
require 'iText-2.1.5.jar'
module GeneratePDF
import java.io.File
import java.io.FileOutputStream
import java.io.OutputStream
import java.util.Date

import com.lowagie.text.Document
import com.lowagie.text.Paragraph
import com.lowagie.text.pdf.PdfWriter

file=FileOutputStream.new(File.new("./Test.pdf"));

document = Document.new();
PdfWriter.getInstance(document, file);
document.open();
document.add(Paragraph.new("Hello Kiran"));
document.add(Paragraph.new(Date.new.toString()));

document.close();
file.close();
end

Jruby1.5 发布了 ... 3 replies

bd7lx — Fri, 14 May 2010 08:15:09 +0800

http://jruby.org/2010/05/12/jruby-1-5-0.html

Ruby 1.8.7 standard library update, RubyGems 1.3.6, RSpec 1.3.0

集成了Maven 和 Ant
http://ruby.dzone.com/articles/jruby-15-integrates-maven-and

http://www.eweek.com/c/a/Application-Development/JRuby-15-Ships-615610/?kc=rss

Engine Yard also recently announced its JRuby commercial support offering, which includes JRuby 1.5. Commercial JRuby support from Engine Yard includes developer assistance and advice on how to tune and optimize JRuby. It covers the most recent version of JRuby and the following libraries: jruby-openssl, activerecord-jdbc-adapter, warbler and jruby-rack. It also covers bundled JRuby components such as Joni, Yecht and jrubyffi.

http://chinaonrails.com/topic/view/3787.html

红宝石在爪哇里，咖啡泡红宝石Ruby in Java, Java in Ruby, JRuby or Ruby Java Bridge? ... 1 reply

bd7lx — Tue, 27 Apr 2010 09:39:05 +0800

http://blog.nofail.de/2010/04/ruby-in-java-java-in-ruby-jruby-or-ruby-java-bridge/

要哪儿个ruby
http://github.com/phoet/which_ruby

helper for checking the current ruby runtime/engine/version

maven_gem : 装Java库如同装Jruby的gem一般 ... no reply

bd7lx — Tue, 16 Mar 2010 09:39:37 +0800

http://github.com/jruby/maven_gem

将成为Jruby 1.5的新特色

http://www.ibm.com/developerworks/cn/java/j-maven/

jruby-prof 往深里刨 ... 6 replies

bd7lx — Mon, 15 Mar 2010 10:04:13 +0800

http://danlucraft.com/blog/2010/03/jruby-prof/

参考ruby-prof
http://chinaonrails.com/q/ruby-prof

里面提到了著名的Java 性能探查工具yourkit

JRuby Startup Time Tips 启动提速贴士 ... 1 reply

bd7lx — Tue, 02 Mar 2010 09:08:12 +0800

http://blog.headius.com/2010/03/jruby-startup-time-tips.html

说道选什么JVM

据说Oracle收了SUN后要把旗下两个JVM合成一个

下面的client backend需要留意

most JVM installs preferred the "client" backend, which meant JVM startup was about as fast as it could get. Unfortunately, many newer JVM releases on many operating systems are either defaulting to "server" or defaulting to a 64-bit JVM (which only has "server")

http://chinaonrails.com/topic/view/2934.html

jruby能运行rails3吗？最新版本肯定行 ... no reply

bd7lx — Wed, 24 Feb 2010 16:42:19 +0800

http://blog.nicksieger.com/articles/2010/02/24/jruby-and-rails-3-sitting-in-a-tree

activerecord-jdbc-adapter 0.9.3 Released 支持rails3而来

ActiveLucene: 用在Jruby上做全文搜索 ... 1 reply

bd7lx — Fri, 05 Feb 2010 08:47:42 +0800

http://www.diegocarrion.com/2010/02/04/full-text-search-in-jruby-with-activelucene/

http://github.com/dcrec1/active_lucene

ActiveLucene 用在ActiveRecord/ActiveModel 上的Apache Lucene接口

支持dynamic attributes, pagination, highlighting and Lucene’s query syntax.

ActiveLucene 是从 Lunr中拔出来的:

http://github.com/dcrec1/lunr

有视频介绍

jruby-complete 用Java直接运行ruby，不用安装了 ... 2 replies

bd7lx — Thu, 04 Feb 2010 08:32:23 +0800

http://spin.atomicobject.com/2010/02/01/running-a-ruby-application-with-jruby-complete

java -jar jruby-complete-1.4.0.jar

运行jirb

java -Xmx500m -Xss1024k -jar jruby-complete-1.4.0.jar -e 'load "META-INF/jruby.home/bin/jirb"'

应用前景应该非常广泛
比如桌面的应用
http://chinaonrails.com/topic/view/2689.html

JavaInline 把java代码嵌入到Jruby代码里 ... no reply

bd7lx — Tue, 24 Nov 2009 10:35:10 +0800

http://github.com/jruby/java-inline

JavaInline provides a way to embed Java code into Ruby code under JRuby and have it compiled and available at runtime. Depends on Java 6 compiler API.

Mixing Ruby, Java and Equinox OSGi – Part 1 ... no reply

bd7lx — Tue, 24 Nov 2009 10:14:20 +0800

http://eclipsesource.com/blogs/2009/11/23/mixing-ruby-java-and-equinox-osgi-part-1/

Equinox含义：二分时刻；昼夜平分时；春分；秋分

Equinox是OSGi R4 core framework的一个实现，一组实现各种可选的OSGI bundle和一些开发基于OSGi技术的系统所需要的基础构件。Eclipse IDE是基于Equinox项目开发的一个典型例子。

Eclipse开发插件，使用Eclipse 的 Rich Client Platform，也用来开发自己的软件界面。

http://www.builder.com.cn/2008/0118/710899.shtml

展望Jruby 1.4 突变成啥样 ... 8 replies

bd7lx — Tue, 22 Sep 2009 08:19:57 +0800

http://www.engineyard.com/blog/2009/5-things-to-look-for-in-jruby-1-4/

其中之一
Generate Real Java Classes from Ruby

看来Java不会死

http://codemonkeyism.com/java-dead/

mutant 是指因为突变而产生的生物体，或是新的遗传特征。
突变是指基因或是染色体上的DNA发生短暂的结构性变化；而新的遗传特征或性状，则可能是一个在原型（野生型）中不存在的表现。

A log4j adapter for Rails ... no reply

bd7lx — Mon, 10 Aug 2009 11:25:17 +0800

http://squaremasher.blogspot.com/2009/08/jruby-rails-and-log4j.html

在应用程序中添加日志记录总的来说基于三个目的：监视代码中变量的变化情况，周期性的记录到文件中供其他应用进行统计分析工作；跟踪代码运行时轨迹，作为日后审计的依据；担当集成开发环境中的调试器的作用，向文件或控制台打印代码的调试信息。

http://logging.apache.org/log4j/

http://www.ibm.com/developerworks/cn/java/l-log4j/index.html

JVM 上纯种黄瓜 cuke4duke ... 2 replies

bd7lx — Fri, 31 Jul 2009 09:48:52 +0800

http://blog.josephwilk.net/ruby/jvm-call-to-arms-with-cucumbers.html

http://wiki.github.com/aslakhellesoy/cuke4duke

Some Example JVM languages:

Groovy
Clojure
Scala
Ioke

用cucumber 写java的高兴了？不必写ruby代码

BDD故事从Ruby演绎开始蔓延开去
http://chinaonrails.com/topic/view/2002.html