JSR 223 JRuby Engine won't work on OSGi platform

I've been googling and seeking to find how I can run an application using JSR 223 JRuby Engine on OSGi platform. I could figure out some workarounds that fit JRuby Engine in OSGi world, but still get an error. When I ran a snippet on Apache Felix, I got "org.jruby.exceptions.RaiseException: library `java' could not be loaded: java.lang.ClassNotFoundException: org.jruby.javasupport.Java." This error happened during the initialization of Ruby instnace, at the line runtime.getLoadService().require("java"); in the initialize() method in JavaEmbedUtils. [Since I found this far before (not in this sample), I don't remember where the code is in my PC...] I'm not an OSGi savvy, I've lost the way of going forward. I thought that the recently filed issue http://jira.codehaus.org/browse/JRUBY-3792 might resolve this problem. The reporter said that the JRuby bundle is not perfect since it dynamically loads some libraries. This seems really close to my problem, so I rebuilt jruby-complete.jar after added DynamicImport-Package: * on the last line of jruby.bnd.templete and tried. The result was still the same, the error happened.

Although I could not make it, I'll write how I tried, hoping somebody will help me out.

• pom.xml

<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
  xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
  <modelVersion>4.0.0</modelVersion>
  <groupId>hickory.example</groupId>
  <artifactId>Hickory</artifactId>
  <packaging>bundle</packaging>
  <version>1.0-SNAPSHOT</version>
  <name>Hickory</name>
  <url>http://maven.apache.org</url>
  <build>
    <plugins>
      <plugin>
        <groupId>org.apache.felix</groupId>
        <artifactId>maven-bundle-plugin</artifactId>
        <extensions>true</extensions>
        <configuration>
          <instructions>
            <Bundle-Name>JRuby Engine example</Bundle-Name>
            <Bundle-Description>Just outpus simple message from JRuby via JRuby Engine</Bundle-Description>
            <Bundle-Vendor>JSR 223 for JRuby Project</Bundle-Vendor>
            <Bundle-Version>1.0.0</Bundle-Version>
            <Bundle-Activator>hickory.example.Activator</Bundle-Activator>
          </instructions>
        </configuration>
      </plugin>
    </plugins>
  </build>
  <repositories>
    <repository>
      <id>maven2-repository.dev.java.net</id>
      <name>Java.net Repository for Maven</name>
      <url>http://download.java.net/maven/2/</url>
      <layout>default</layout>
    </repository>
  </repositories>
  <dependencies>
    <dependency>
      <groupId>org.apache.felix</groupId>
      <artifactId>org.osgi.core</artifactId>
      <version>1.3.0-SNAPSHOT</version>
    </dependency>
    <dependency>
      <groupId>org.jruby</groupId>
      <artifactId>jruby-complete</artifactId>
      <version>1.3.1</version>
    </dependency>
    <dependency>
      <groupId>org.livetribe</groupId>
      <artifactId>livetribe-jsr223</artifactId>
      <version>2.0.5</version>
    </dependency>
    <dependency>
      <groupId>com.sun.script.jruby</groupId>
      <artifactId>jruby-engine</artifactId>
      <version>1.1.7</version>
    </dependency>
    <dependency>
      <groupId>junit</groupId>
      <artifactId>junit</artifactId>
      <version>3.8.1</version>
      <scope>test</scope>
    </dependency>
  </dependencies>
</project>

This pom.xml is for JDK 1.5, so I used livetribe version of javax.script package implementation. But, this archive is not OSGi bundle, so I had to use JDK 1.6 to start my bundle.

• Snippet

package hickory.example;

import javax.script.ScriptEngine;
import javax.script.ScriptEngineFactory;
import javax.script.ScriptEngineManager;
import org.osgi.framework.BundleActivator;
import org.osgi.framework.BundleContext;

public class Activator implements BundleActivator {
    public void start(BundleContext context) throws Exception {
        System.out.println("Starting JRuby Engine!");
        // JSR 223's discovery mechanism does not work on OSGi platform,
        // so the engine factory instance should be directly instantiated.
        //ScriptEngineManager manager = new ScriptEngineManager();
        //manager.registerEngineName("jruby", new com.sun.script.jruby.JRubyScriptEngineFactory());
        //ScriptEngine engine = manager.getEngineByName("jruby");
        ScriptEngineFactory factory = (ScriptEngineFactory) new com.sun.script.jruby.JRubyScriptEngine();
        System.out.println("Ready.");
        ScriptEngine engine = factory.getScriptEngine();
        engine.eval("puts \"JRuby wants to yell out, Hello World.\"");
    }

    public void stop(BundleContext context) {
        System.out.println("JRuby Engine stopped.");
    }
}

• On Apache Felix

cd felix-1.8.0
java -jar bin/felix.jar

Welcome to Felix.
=================

-> ps
START LEVEL 1
   ID   State         Level  Name
[   0] [Active     ] [    0] System Bundle (1.8.0)
[   1] [Active     ] [    1] Apache Felix Shell Service (1.2.0)
[   2] [Active     ] [    1] Apache Felix Shell TUI (1.2.0)
[  13] [Active     ] [    1] Apache Felix Bundle Repository (1.4.0)
-> start file:///Users/yoko/Tools/jruby-1.3.1/lib/jruby-complete.jar
-> ps
START LEVEL 1
   ID   State         Level  Name
[   0] [Active     ] [    0] System Bundle (1.8.0)
[   1] [Active     ] [    1] Apache Felix Shell Service (1.2.0)
[   2] [Active     ] [    1] Apache Felix Shell TUI (1.2.0)
[  13] [Active     ] [    1] Apache Felix Bundle Repository (1.4.0)
[  28] [Active     ] [    1] JRuby 1.3.1 (1.3.1)
-> start file:///Users/yoko/.m2/repository/com/sun/script/jruby/jruby-engine/1.1.7/jruby-engine-1.1.7.jar
-> ps
START LEVEL 1
   ID   State         Level  Name
[   0] [Active     ] [    0] System Bundle (1.8.0)
[   1] [Active     ] [    1] Apache Felix Shell Service (1.2.0)
[   2] [Active     ] [    1] Apache Felix Shell TUI (1.2.0)
[  13] [Active     ] [    1] Apache Felix Bundle Repository (1.4.0)
[  28] [Active     ] [    1] JRuby 1.3.1 (1.3.1)
[  29] [Active     ] [    1] JRuby JSR223 Engine (1.0)
-> start file:///Users/yoko/NetBeansProjects/Hickory/target/Hickory-1.0-SNAPSHOT.jar
Starting JRuby Engine!
Warning: JRuby home "/28.0:1/META-INF/jruby.home" does not exist, using /var/folders/xY/xYuRYl0RHjy7p6SeA0nHVU+++TI/-Tmp-/
org.osgi.framework.BundleException: Activator start error in bundle hickory.example.Hickory [30].
    at org.apache.felix.framework.Felix.startBundle(Felix.java:1506)
    at org.apache.felix.framework.BundleImpl.start(BundleImpl.java:779)
    at org.apache.felix.shell.impl.StartCommandImpl.execute(StartCommandImpl.java:105)
    at org.apache.felix.shell.impl.Activator$ShellServiceImpl.executeCommand(Activator.java:291)
    at org.apache.felix.shell.tui.Activator$ShellTuiRunnable.run(Activator.java:177)
    at java.lang.Thread.run(Thread.java:637)
Caused by: org.jruby.exceptions.RaiseException: library `java' could not be loaded: java.lang.ClassNotFoundException: org.jruby.javasupport.Java
    at (unknown).initialize(:1)
    at (unknown).(unknown)(:1)
org.jruby.exceptions.RaiseException: library `java' could not be loaded: java.lang.ClassNotFoundException: org.jruby.javasupport.Java
-> ps
START LEVEL 1
   ID   State         Level  Name
[   0] [Active     ] [    0] System Bundle (1.8.0)
[   1] [Active     ] [    1] Apache Felix Shell Service (1.2.0)
[   2] [Active     ] [    1] Apache Felix Shell TUI (1.2.0)
[  13] [Active     ] [    1] Apache Felix Bundle Repository (1.4.0)
[  28] [Active     ] [    1] JRuby 1.3.1 (1.3.1)
[  29] [Active     ] [    1] JRuby JSR223 Engine (1.0)
[  30] [Resolved   ] [    1] JRuby Engine example (1.0.0)