/* * Copyright 2004,2004 The Apache Software Foundation. * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ package org.apache.bsf.util.event.generator; import java.util.Hashtable; import org.apache.commons.logging.Log; import org.apache.commons.logging.LogFactory; public class AdapterClassLoader extends ClassLoader { private static Hashtable classCache = new Hashtable(); private Class c; private Log logger = LogFactory.getLog(this.getClass().getName()); public AdapterClassLoader() { super(); } public synchronized Class defineClass(String name, byte[] b) { if ((c = getLoadedClass(name)) == null) { c = defineClass(name.replace('/','.'), b, 0, b.length); // rgf, 2006-02-03 put(name, c); } else { logger.error("AdapterClassLoader: " + c + " previously loaded. Can not redefine class."); } return c; } final protected Class findClass(String name) { return get(name); } final protected Class get(String name) { return (Class)classCache.get(name); } public synchronized Class getLoadedClass(String name) { Class c = findLoadedClass(name); if (c == null) { try { c = findSystemClass(name); } catch (ClassNotFoundException e) { } } if (c == null) { c = findClass(name); } return c; } protected synchronized Class loadClass(String name, boolean resolve) throws ClassNotFoundException { Class c = getLoadedClass(name); if (c != null && resolve) { resolveClass(c); } return c; } // Not in JDK 1.1, only in JDK 1.2. // public AdapterClassLoader(ClassLoader loader) // { // super(loader); // } final protected void put(String name, Class c) { classCache.put(name, c); } }