BundleClassLoader.java

package org.rascalmpl.eclipse.nature;

import java.io.IOException;
import java.net.URL;
import java.util.Enumeration;

import org.osgi.framework.Bundle;

/**
 * This code is taken from http://wiki.eclipse.org/BundleProxyClassLoader_recipe
 */
public class BundleClassLoader extends ClassLoader {
  private Bundle bundle;
  private ClassLoader parent;
    
  public BundleClassLoader(Bundle bundle) {
    this.bundle = bundle;
  }

  @Override
  public Enumeration<URL> getResources(String name) throws IOException {
    return bundle.getResources(name);
  }

  @Override
  public URL findResource(String name) {
      return bundle.getResource(name);
  }

  @Override
  public Class<?> findClass(String name) throws ClassNotFoundException {
      return bundle.loadClass(name);
  }

  @Override
  public URL getResource(String name) {
    return (parent == null) ? findResource(name) : super.getResource(name);
  }

  @Override
  protected Class<?> loadClass(String name, boolean resolve) throws ClassNotFoundException {
    Class<?> clazz = (parent == null) ? findClass(name) : super.loadClass(name, false);
    if (resolve)
      super.resolveClass(clazz);
    
    return clazz;
  }
}