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package org.jruby.embed.osgi.internal;

import org.jruby.Ruby;
import org.jruby.util.JRubyClassLoader;
import org.jruby.runtime.load.Library;
import org.osgi.framework.Bundle;

/**
 * @author hmalphettes
 * 
 * Attempt at making an osgi bundle an acceptable container for a jruby library
 * TODO: track the state of the bundle and remove/add the library.
 */
public class OSGiBundleLibrary implements Library {
    
    private final Bundle bundle;

    public OSGiBundleLibrary(Bundle bundle) {
        this.bundle = bundle;
    }

    public void load(Ruby runtime, boolean wrap) {
        // Make Java class files in the bundle and resources reachable from Ruby

        //don't remove this and in-line it: we need this bundle to explicitly
        //import the package org.jruby.util otherwise we get some weird
        //classnotfound exception 'org.jruby.util.JRubyClassLoader'
        JRubyClassLoader jrubycl = (JRubyClassLoader)runtime.getJRubyClassLoader();
        ClassLoader cl = jrubycl.getParent();
        if (cl instanceof JRubyOSGiBundleClassLoader) {
            ((JRubyOSGiBundleClassLoader)cl).addBundle(this.bundle);
        } else {
            throw new IllegalArgumentException("osgi libraries are only" +
            		" supported with a JRubyOSGiBundleClassLoader as the " +
            		" loader of the ScriptingContainer.");
        }
    }


}
