| /* CombinedClassLoader.java -- Multiple class loader support for proxy. |
| Copyright (C) 2006 Free Software Foundation, Inc. |
| |
| This file is part of GNU Classpath. |
| |
| GNU Classpath is free software; you can redistribute it and/or modify |
| it under the terms of the GNU General Public License as published by |
| the Free Software Foundation; either version 2, or (at your option) |
| any later version. |
| |
| GNU Classpath is distributed in the hope that it will be useful, but |
| WITHOUT ANY WARRANTY; without even the implied warranty of |
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| General Public License for more details. |
| |
| You should have received a copy of the GNU General Public License |
| along with GNU Classpath; see the file COPYING. If not, write to the |
| Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA |
| 02110-1301 USA. |
| |
| Linking this library statically or dynamically with other modules is |
| making a combined work based on this library. Thus, the terms and |
| conditions of the GNU General Public License cover the whole |
| combination. |
| |
| As a special exception, the copyright holders of this library give you |
| permission to link this library with independent modules to produce an |
| executable, regardless of the license terms of these independent |
| modules, and to copy and distribute the resulting executable under |
| terms of your choice, provided that you also meet, for each linked |
| independent module, the terms and conditions of the license of that |
| module. An independent module is a module which is not derived from |
| or based on this library. If you modify this library, you may extend |
| this exception to your version of the library, but you are not |
| obligated to do so. If you do not wish to do so, delete this |
| exception statement from your version. */ |
| |
| |
| package gnu.java.rmi.server; |
| |
| import java.io.IOException; |
| import java.net.URL; |
| import java.util.Collection; |
| import java.util.Enumeration; |
| import java.util.Iterator; |
| import java.util.ArrayList; |
| |
| /** |
| * This class supports the multiple class loaders to load the resources. It is |
| * used for constructing proxy classes that implement interfaces, loaded by |
| * the several different class loaders. |
| * |
| * @author Audrius Meskauskas (AudriusA@Bioinformatics.org) |
| */ |
| public class CombinedClassLoader extends ClassLoader |
| { |
| /** |
| * The class loader array. |
| */ |
| ClassLoader[] loaders; |
| |
| /** |
| * Create a new combined class loader that uses the given collection of |
| * loaders to load the classes and resources. The loader order is equal to |
| * the order, returned by the collection interator. The duplicate loaders |
| * are discarded and the system class loader is added as the last loader. |
| * |
| * @param a_loaders the loadery collection (may contain duplicate instances |
| * that will be discarded. |
| */ |
| public CombinedClassLoader(Collection a_loaders) |
| { |
| ArrayList sLoaders = new ArrayList(a_loaders.size()); |
| |
| Iterator iter = a_loaders.iterator(); |
| Object cl; |
| while (iter.hasNext()) |
| { |
| cl = iter.next(); |
| if (cl!=null && !sLoaders.contains(cl)) |
| sLoaders.add(cl); |
| } |
| |
| loaders = new ClassLoader[sLoaders.size()]; |
| |
| for (int i = 0; i < loaders.length; i++) |
| loaders[i] = (ClassLoader) sLoaders.get(i); |
| } |
| |
| /** |
| * Find the class with the given name. |
| */ |
| protected Class findClass(String name) throws ClassNotFoundException |
| { |
| for (int i = 0; i < loaders.length; i++) |
| { |
| try |
| { |
| return loaders[i].loadClass(name); |
| } |
| catch (ClassNotFoundException e) |
| { |
| // try another. |
| } |
| } |
| return super.findClass(name); |
| } |
| |
| /** |
| * Find resource with the given name. |
| */ |
| protected URL findResource(String name) |
| { |
| for (int i = 0; i < loaders.length; i++) |
| { |
| URL resource = loaders[i].getResource(name); |
| if (resource != null) |
| return resource; |
| } |
| return super.findResource(name); |
| } |
| |
| /** |
| * Find resources with the given name. |
| */ |
| protected Enumeration findResources(String name) throws IOException |
| { |
| for (int i = 0; i < loaders.length; i++) |
| { |
| Enumeration resource = loaders[i].getResources(name); |
| if (resource != null) |
| return resource; |
| } |
| return super.findResources(name); } |
| } |