/*
 * $Id$
 *
 * Copyright (C) 2003-2015 JNode.org
 *
 * This library is free software; you can redistribute it and/or modify it
 * under the terms of the GNU Lesser General Public License as published
 * by the Free Software Foundation; either version 2.1 of the License, or
 * (at your option) any later version.
 *
 * This library 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 Lesser General Public 
 * License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with this library; If not, write to the Free Software Foundation, Inc., 
 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 */
 
package org.jnode.plugin.model;

import java.net.URL;
import org.jnode.plugin.PluginDescriptor;

/**
 * @author Ewout Prangsma (epr@users.sourceforge.net)
 */
final class PluginsClassLoader extends ClassLoader {

    private final PluginRegistryModel registry;

    public PluginsClassLoader(PluginRegistryModel registry) {
        this.registry = registry;
    }

    /**
     * @see java.lang.ClassLoader#findClass(java.lang.String)
     */
    protected Class<?> findClass(String name) throws ClassNotFoundException {
        for (PluginDescriptor descr : registry) {
            if (!descr.isSystemPlugin() && !descr.isFragment()) {
                final PluginClassLoaderImpl cl = (PluginClassLoaderImpl) descr.getPluginClassLoader();
                if (cl.containsClass(name)) {
                    return cl.loadClass(name);
                }
            }
        }
        throw new ClassNotFoundException(name);
    }

    /**
     * @see java.lang.ClassLoader#findResource(java.lang.String)
     */
    protected URL findResource(String name) {
        for (PluginDescriptor descr : registry) {
            if (!descr.isSystemPlugin() && !descr.isFragment()) {
                final PluginClassLoaderImpl cl = (PluginClassLoaderImpl) descr.getPluginClassLoader();
                final URL url = cl.getResource(name);
                if (url != null) {
                    return url;
                }
            }
        }
        return null;
    }
}