| /* |
| * @(#)$Id$ |
| * |
| * The Apache Software License, Version 1.1 |
| * |
| * |
| * Copyright (c) 2001 The Apache Software Foundation. All rights |
| * reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * |
| * 1. Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * |
| * 2. Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in |
| * the documentation and/or other materials provided with the |
| * distribution. |
| * |
| * 3. The end-user documentation included with the redistribution, |
| * if any, must include the following acknowledgment: |
| * "This product includes software developed by the |
| * Apache Software Foundation (http://www.apache.org/)." |
| * Alternately, this acknowledgment may appear in the software itself, |
| * if and wherever such third-party acknowledgments normally appear. |
| * |
| * 4. The names "Xalan" and "Apache Software Foundation" must |
| * not be used to endorse or promote products derived from this |
| * software without prior written permission. For written |
| * permission, please contact apache@apache.org. |
| * |
| * 5. Products derived from this software may not be called "Apache", |
| * nor may "Apache" appear in their name, without prior written |
| * permission of the Apache Software Foundation. |
| * |
| * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED |
| * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
| * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE |
| * DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR |
| * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF |
| * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND |
| * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, |
| * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT |
| * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
| * SUCH DAMAGE. |
| * ==================================================================== |
| * |
| * This software consists of voluntary contributions made by many |
| * individuals on behalf of the Apache Software Foundation and was |
| * originally based on software copyright (c) 2001, Sun |
| * Microsystems., http://www.sun.com. For more |
| * information on the Apache Software Foundation, please see |
| * <http://www.apache.org/>. |
| * |
| * @author Morten Jorgensen |
| * @author Santiago Pericas-Geertsen |
| * |
| */ |
| |
| package org.apache.xalan.xsltc.runtime; |
| |
| import java.lang.Class; |
| import java.lang.ClassLoader; |
| import java.lang.Thread; |
| |
| import java.net.*; // temporary |
| |
| /** |
| * This class is intended used when the default Class.forName() method fails. |
| * This method will fail if XSLTC is installed in a jar-file under the |
| * $JAVA_HOME/jre/lib/ext directory. This is because the extensions class |
| * loader is used instead of the bootstrap class loader, and that the |
| * extensions class loader does not load classes for the default class path. |
| * But, if the extensions class loader is being used, then we know two things: |
| * (1) XSLTC is running on Java 1.2 or later (when extensions were introduced) |
| * (2) XSLTC has access to the ClassLoader.getSystemClassLoader() method |
| * This class takes advantage of this and uses a privileged call to this |
| * method to get a reference to the bootstrap class loader. It then uses this |
| * class loader to load the desired class. |
| * |
| * Note that this class should only be _instanciated_ if Class.forName() fails. |
| * And, YES, I do mean _instanciated_, and not called. By instanciating this |
| * class on Java 1.1 you'll get a NoSuchMethodException. |
| */ |
| final public class TransletLoader { |
| |
| ClassLoader _loader = null; // Reference to class loader |
| |
| /** |
| * Create a translet loader. |
| * Get a handle to the system class loader |
| */ |
| public TransletLoader() { |
| // Get the loader for the current thread (not the current class) |
| ClassLoader loader = Thread.currentThread().getContextClassLoader(); |
| |
| // Avoid using the extensions class loader (see comment above) |
| final String loaderName = loader.getClass().getName(); |
| if (loaderName.equals("sun.misc.Launcher$ExtClassLoader")) { |
| loader = ClassLoader.getSystemClassLoader(); |
| } |
| _loader = loader; |
| } |
| |
| /** |
| * Loads a Class definition, but does not run static initializers |
| */ |
| public Class loadClass(String name) throws ClassNotFoundException { |
| return(Class.forName(name, false, _loader)); |
| } |
| |
| /** |
| * Loads a Class definition and runs static initializers. |
| */ |
| public Class loadTranslet(String name) throws ClassNotFoundException { |
| return(Class.forName(name, true, _loader)); |
| } |
| } |