| /******************************************************************************* |
| * Copyright (c) 2008, 2009 IBM Corporation and others. |
| * All rights reserved. This program and the accompanying materials |
| * are made available under the terms of the Eclipse Public License v1.0 |
| * which accompanies this distribution, and is available at |
| * http://www.eclipse.org/legal/epl-v10.html |
| * |
| * Contributors: |
| * IBM Corporation - initial API and implementation |
| *******************************************************************************/ |
| package org.eclipse.osgi.launch; |
| |
| import java.net.URL; |
| import java.net.URLClassLoader; |
| |
| class EquinoxFWClassLoader extends URLClassLoader { |
| |
| private static final String[] DELEGATE_PARENT_FIRST = {"java.", "org.osgi.", "org.eclipse.osgi.launch.", "org.eclipse.osgi.service.", "org.eclipse.osgi.framework.log", "org.eclipse.osgi.framework.adaptor", "org.eclipse.osgi.framework.internal.core.ReferenceInputStream"}; //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$ //$NON-NLS-4$ //$NON-NLS-5$ //$NON-NLS-6$ //$NON-NLS-7$ |
| private static final String[] DELEGATE_CHILD_FIRST = new String[0]; // nothing right now is skipped |
| |
| private final ClassLoader parent; |
| |
| public EquinoxFWClassLoader(URL[] urls, ClassLoader parent) { |
| super(urls, parent); |
| this.parent = parent; |
| } |
| |
| protected Class loadClass(String name, boolean resolve) throws ClassNotFoundException { |
| Class clazz = findLoadedClass(name); |
| if (clazz != null) |
| return clazz; |
| |
| boolean childFirst = childFirst(name); |
| ClassNotFoundException cnfe = null; |
| |
| if (childFirst) |
| try { |
| clazz = findClass(name); |
| } catch (ClassNotFoundException e) { |
| // continue |
| cnfe = e; |
| } |
| |
| if (clazz == null) |
| try { |
| clazz = parent.loadClass(name); |
| } catch (ClassNotFoundException e) { |
| // continue |
| } |
| |
| if (clazz == null && cnfe != null) |
| throw cnfe; |
| if (clazz == null && !childFirst) |
| clazz = findClass(name); |
| |
| if (resolve) |
| resolveClass(clazz); |
| return clazz; |
| } |
| |
| private boolean childFirst(String name) { |
| for (int i = DELEGATE_CHILD_FIRST.length - 1; i >= 0; i--) |
| if (name.startsWith(DELEGATE_CHILD_FIRST[i])) |
| return true; |
| for (int i = DELEGATE_PARENT_FIRST.length - 1; i >= 0; i--) |
| if (name.startsWith(DELEGATE_PARENT_FIRST[i])) |
| return false; |
| return true; |
| |
| } |
| } |