| package org.eclipse.ui.internal.examples.di.js; |
| |
| import java.io.IOException; |
| import java.net.URL; |
| import java.util.Enumeration; |
| |
| import org.osgi.framework.Bundle; |
| |
| public class BundleProxyClassLoader extends ClassLoader { |
| private Bundle bundle; |
| private ClassLoader parent; |
| |
| public BundleProxyClassLoader(Bundle bundle) { |
| this.bundle = bundle; |
| } |
| |
| public BundleProxyClassLoader(Bundle bundle, ClassLoader parent) { |
| super(parent); |
| this.parent = parent; |
| this.bundle = bundle; |
| } |
| |
| // Note: Both ClassLoader.getResources(...) and bundle.getResources(...) |
| // consult |
| // the boot classloader. As a result, |
| // BundleProxyClassLoader.getResources(...) |
| // might return duplicate results from the boot classloader. Prior to Java 5 |
| // Classloader.getResources was marked final. If your target environment |
| // requires |
| // at least Java 5 you can prevent the occurence of duplicate boot |
| // classloader |
| // resources by overriding ClassLoader.getResources(...) instead of |
| // ClassLoader.findResources(...). |
| public Enumeration findResources(String name) throws IOException { |
| return bundle.getResources(name); |
| } |
| |
| public URL findResource(String name) { |
| return bundle.getResource(name); |
| } |
| |
| public Class findClass(String name) throws ClassNotFoundException { |
| return bundle.loadClass(name); |
| } |
| |
| public URL getResource(String name) { |
| return (parent == null) ? findResource(name) : super.getResource(name); |
| } |
| |
| 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; |
| } |
| } |